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MODEL 2234 DIGITAL FLOW COMPUTER

2.5.5 CONTROLLING EXTERNAL INDUCTIVE CIRCUITS

Externally located inductive circuits may be controlled from the Model 2234 via
contact closure outputs. However, an external arc suppression network must be
used to prevent radiation of high frequency energy into the circuitry, causing false
operation of the computer.

_____________________________________________________________

NOTE:

The unit will compute in error with an unsuppressed inductive
load connected to the contact closure output.

_____________________________________________________________

The contact closure rating is 30 VDC or VAC, 0.75 amperes, not to exceed 10 W
resistive, 3.5 W inductive.

2.5.5.1 D-C POWERED CONTACT CLOSURE CIRCUITS

Arcing is effectively suppressed in D-C powered circuits by connecting a diode in
parallel with the coil to be energized. Ensure that the diode polarity is such that
when the coil is in the energized condition, the diode is non-conducting.

The

diode should have a voltage rating equal to or greater than the external D-C supply
voltage. Its current rating should be equal to or greater than the coil energizing
current.

SECTION 2

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Содержание 2234

Страница 1: ...MODEL 2234 DIGITAL FLOW COMPUTER __________________________________________ DANIEL INDUSTRIES INC HOUSTON TEXAS Part Number 3 9000 333 Revision A APRIL 1993 ...

Страница 2: ......

Страница 3: ...T SHALL DANIEL BE LIABLE FOR ANY SPECIAL OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO LOSS OF PRODUCTION LOSS OF PROFITS ETC PRODUCT NAMES USED HEREIN ARE FOR MANUFACTURER OR SUPPLIER IDENTIFICATION ONLY AND MAY BE TRADEMARKS REGISTERED TRADEMARKS OF THESE COMPANIES COPYRIGHT 1993 BY DANIEL INDUSTRIES INC HOUSTON TEXAS U S A All rights reserved No part of this work may be reproduced or co...

Страница 4: ... twenty four 24 months The Danalyzer valves are warranted for the life of the instrument and the columns for five years The warranties specified herein are in lieu of any and all other warranties express or implied including any warranty of merchantability or fitness for a particular purpose Daniel shall be liable only for loss or damage directly caused by its sole negligence Daniel s liability fo...

Страница 5: ..._____________________ SECTION 1 1 0 INTRODUCTION 1 1 1 GENERAL 1 1 1 1 CHANGES 2 1 1 2 HARDWARE 3 1 2 SPECIFICATIONS 4 1 2 1 INPUTS 4 1 2 2 OUTPUTS 5 1 2 3 DISPLAYS 10 1 2 4 CONTROLS 12 1 2 5 ACCURACY 14 1 2 6 OTHER 15 TABLE OF CONTENTS iii ...

Страница 6: ...STRUCTIONS 18 2 5 INSTALLATION 18 2 5 1 DETERMINING OPTIONS 18 2 5 2 CASE MOUNTING 20 2 5 3 ACCESS TO PLUG IN PRINTED CIRCUIT BOARDS 20 2 5 4 WIRING THE MODEL 2234 21 2 5 5 CONTROLLING EXTERNAL INDUCTIVE CIRCUITS 22 2 6 STARTUP 24 2 6 1 GENERAL 24 2 6 2 STARTUP PROMPTING SEQUENCE 26 2 6 3 SUPPLEMENTARY STARTUP INSTRUCTIONS 43 2 6 4 EXAMPLE OF STARTUP SEQUENCE 47 TABLE OF CONTENTS iv ...

Страница 7: ...G TEMPORARY OR PERMANENT DISPLAY 75 3 4 2 VALIDITY CHECKS OF DATA ENTRIES 75 3 4 3 FUNCTIONS OF SPECIFIC KEYS 76 3 4 4 INDICATORS 78 3 5 DATA INPUT AND OVERRIDING CONTROLS 79 3 5 1 ENTERING AN OPERATOR SELECTED VALUE 80 3 5 2 SWITCHING MEASURED VALUES AND OPERATOR ENTERED VALUES 80 3 6 DATA ACCESS 84 3 6 1 TRANSDUCER SCALING 85 3 6 2 MEASUREMENTS 86 3 6 3 OPERATOR ENTERED DATA CONSTANTS 88 TABLE O...

Страница 8: ...ER DISPLAY ACTIONS 103 3 7 4 CLEARING ACTIONS 105 3 8 SERIAL OUTPUT FOR PRINTING 106 3 8 1 READ CODE USAGE 108 3 8 2 DELAY DLY READ CODE 44 108 3 8 3 DATE DTE READ CODE 45 108 3 8 4 REAL TIME CLOCK TIM READ CODE 46 109 3 8 5 DAILY PRINT TIME DPT READ CODE 47 109 3 8 6 PRINT INTERVAL INT READ CODE 48 109 3 8 7 IDENTIFICATION ID READ CODE 49 110 3 8 8 BAUD RATE BUD READ CODE 50 110 3 8 9 PRINT TABLE...

Страница 9: ...PRINT FORMAT 111 3 9 FREQUENCY DENSITOMETER OPTION 112 3 9 1 CALCULATIONS 112 3 9 2 PROMPTING SEQUENCE 115 3 9 3 CONSTANTS 116 3 9 4 EXAMPLES 117 3 9 5 COMMAND CODES 125 3 9 6 ALARMS 125 3 10 CALCULATIONS EACH METER 126 3 10 1 STARTUP PROMPTING 135 TABLE OF CONTENTS vii ...

Страница 10: ...ION 137 4 2 1 DETERMINE THE INSTRUMENT OPTIONS 137 4 2 2 REQUIRED TEST EQUIPMENT 137 4 2 3 PROCEDURE 138 4 2 4 POWER SUPPLY ADJUSTMENTS 138 4 3 FIELD CALIBRATION 141 4 3 1 RATE VOLTAGE CALIBRATION 141 4 3 2 REFERENCE VOLTAGE CALIBRATION 142 4 3 3 RATE CURRENT CALIBRATION 142 4 3 4 DENSITY CURRENT CALIBRATION 146 TABLE OF CONTENTS viii ...

Страница 11: ...SECTION 5 5 0 MAINTENANCE 147 5 1 GENERAL 147 5 2 PREVENTIVE MAINTENANCE 147 5 3 RECOMMENDED SPARE PARTS 147 5 4 CUSTOMER SERVICE REPORT 148 5 5 SHIPPING INSTRUCTIONS 148 APPENDIX A READ CODE LISTING 149 APPENDIX B DRAWINGS AND PARTS LIST 159 TABLE OF CONTENTS ix ...

Страница 12: ...__________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank TABLE OF CONTENTS x ...

Страница 13: ...ters The Model 2234 is a mass flow computer for use with orifice meters Additionally the density of vapor phase ethylene is computed per API 2565 The Software revisions include Delete flow calculations and all operator access read codes command codes error codes associated with 1969 revision of standard AGA 3 Add flow calculations for mass flow computations in accordance with the 1991 revision of ...

Страница 14: ...n functionality regarding display of Mass Rates and Mass Totals both for individual lines and Station Totals An operator selection for TAPLOC is included If downstream taps are selected the Model 2234 will compute upstream pressure based upon differential pressure Only the upstream expansion factor will be computed A keyboard entry for isentropic exponent is included The Model 2234 operator interf...

Страница 15: ...n a large number of existing computers in the field To minimize field difficulty no hardware changes are to be required for existing computers originally built as Model 2234 XX3 That is there will be 4k of RAM on board 1 and the software will reside in the 2716 EPROM Existing computers originally built as Model 2234 XX1 will require an upgrade of board 1 to include full RAM capability and board 2 ...

Страница 16: ...ial for 4 20 mA signal from any range transducer within the range of 0 5000 PSIA for Static Pressure 0 1000 inches of water for Differential Pressure 0 No upper limit LBF3 for Density 50o F to 250o F for Temperature 3 Differential Input Range 3 to 21 mA 4 Differential Input Resistance 250 Ohms 0 05 5 Differential Input Filter 52 db 60 Hz 6 Common Mode Input Range 0 V to 15 V with respect to common...

Страница 17: ...ak Agar device Square wave 0 to 10 V peak 3 Frequency Range 1000 to 5000 Hz minimum pulse width of 0 1 ms Solartron device 1000 Hz to 1350 Hz Barton device 1500 Hz to 2500 Hz Agar device 500 Hz to 2000 Hz 4 Input Resistance 27 K Ohms 1 2 2 OUTPUTS A 0 10 Volts Rate Mass 1 Range Zero to 10 00 V signal scalable by keyboard entry to represent from 0 00 to N pounds per hour Absolute maximum range is 0...

Страница 18: ...is zero to 10 62 Volts 2 Maximum Load 5 mA 2 K Ohms minimum 3 Response Time Densitometer input to Density Output 2 seconds typical for densitometer mode 4 Response Time Temperature and or Static Pressure Input to Density Output 4 seconds typical for API 2565 mode D Density 4 20 mA2 1 Range Four to 20 mA signal scalable by keyboard entry to represent X to Y pounds per cubic foot Absolute maximum ra...

Страница 19: ... loads the user is responsible for providing resistive capacitive suppression for the contact ________________________________________________________ 2 Scaling One closure per least significant digit advance of the Station Total Display 3 Maximum Instantaneous Rate 25 per second See item 5 to determine maximum continuous rate 4 Duration 20 ms nominal 5 Rate Contact Life 200 000 000 counts at mini...

Страница 20: ...inductive loads it is the responsibility of the user to provide arc suppression for the contact _______________________________________________________ 2 Forward contact closes in response to input differential pressure above low flow cutoff on line 1 Reverse contact closes in response to input differential pressure above low flow cutoff for line 2 For proper operation of direction sense the bi di...

Страница 21: ... ________________________________________________________ 2 Function Closes to indicate power failure processor failure or other alarm condition H Serial Output 1 Baud Rate Selected by operator Standard rates from 150 to 2400 baud 2 Type Ten bits in ASCII serial form 3 Voltage Levels RS232C 12 V to 12 V Logic 0 3 Volts minimum Logic 1 3 Volts minimum 4 Character Frequency Maximum 1 character per 2...

Страница 22: ...rror or alarm condition This LED is ON if either the Watchdog Timer has timed out or another condition exists 2 Yellow LED Indicates that an error condition has occurred since all errors were last cleared via the keyboard even though the error condition no longer exists 3 Green LED Indicates that the operator may enter or change data in the computer via the keyboard The enter change capability is ...

Страница 23: ...MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 1 1 Model 2234 Display SECTION 1 11 ...

Страница 24: ... calculation Green LED indicator on front panel 2 DISABLE position Prevents using the keyboard to enter or change critical constants or scaling B Keyboard 24 Keys 1 Enter ENTR Inputs into memory any valid data shown on the Alpha Numeric display 2 Display DSPY Recalls blanked data to the display when operation is in display timeout see paragraph 3 7 1 3 Numerals period and minus sign For entering n...

Страница 25: ...the data value for its computations 6 Variable VAR Pressing VAR displays data from a transducer or a computer calculation An asterisk displayed with the data identifier indicates that the computer is not currently using the data for its computations 7 Clear CLR Pressing CLR removes entered data values from the data code displayed and displays 0 0 8 Command CMD Entering a one two or three digit num...

Страница 26: ...ndicates to the computer that the data to follow is an exponent e g 2 5 2 x 105 200 000 10 Down Arrow Causes the computer to step to the next data code 11 Print PRNT Pressing PRNT sends operator selected data output to an external printer 1 2 5 ACCURACY A Low Flow Cutoff 2 of Full Scale Differential Pressure of lowest range transducers for each tube B Density determined from the Frequency Densitom...

Страница 27: ...ithout transducers current rate outputs and mechanical counter 10 VA typical for basic instrument B Operating Temperature 0o F to 140o F 20o F to 140o F with mechanical counter C Storage Temperature 40o F to 140o F D Humidity 0 95 Non condensing E Physical Characteristics Dimensions Industrial Housing 4 wide x 21 5 16 long x 8 1 16 high F Weight Approximately 17 pounds SECTION 1 15 ...

Страница 28: ...__________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank SECTION 1 16 ...

Страница 29: ...roughly inspect the Model 2234 for visual damage Inspect the power supply at the rear of the chassis the printed circuit boards and the front panel which contains the push button controls and the LED display monitor Keep the packing materials until after the computer is put on line and its operation is checked 2 3 DAMAGE IN SHIPMENT If the Model 2234 has been damaged in shipment first file a claim...

Страница 30: ... a sturdy carton or box Ship prepaid via the most suitable method 2 5 INSTALLATION 2 5 1 DETERMINING OPTIONS The model number and option code for the Model 2234 are located on the rear of the instrument when removed from the housing To determine the options of the instrument compare the model number and option codes to those in Figure 2 1 ___________________________________________________________...

Страница 31: ...MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 2 1 Model Number and Option Codes SECTION 2 19 ...

Страница 32: ...ARDS Access is gained to the plug in printed circuit boards by pressing the latch release on the front of the computer and sliding the computer out of the case to the detent position The Enable Disable switch is located towards the left top rear of P C Board No 1 This allows access to test points etc necessary to perform a bench calibration as discussed in Section 4 Turn off power if the computer ...

Страница 33: ...omputer common is provided on the rear terminal PC board Refer to Note 5 on the field wiring diagram when grounding is to be made elsewhere in the system ____________________________________________________________ Use good instrument wiring practices ensuring that the inputs and outputs are protected against transients The use of external transient protectors should be considered in areas of high...

Страница 34: ... inductive load connected to the contact closure output _____________________________________________________________ The contact closure rating is 30 VDC or VAC 0 75 amperes not to exceed 10 W resistive 3 5 W inductive 2 5 5 1 D C POWERED CONTACT CLOSURE CIRCUITS Arcing is effectively suppressed in D C powered circuits by connecting a diode in parallel with the coil to be energized Ensure that th...

Страница 35: ...Connect the series network across the coil With a supply voltage of 24 VAC a typical network consists of a 100 Ohm one half watt resistor and a 0 02 to 0 05 microfarad capacitor With a supply voltage of 12 VAC a typical network consists of a 30 Ohm one half watt resistor and a 0 1 microfarad capacitor _____________________________________________________________ CAUTION Do not operate 115 VAC circ...

Страница 36: ...e Table 2 1a is provided as a data entry aid Complete this form for your usage before beginning the Startup Prompting Sequence You will normally need to adjust the configuration placed in the unit by the factory to your particular usage Table 2 1b includes the printer output options and the Frequency Densitometer if used Options No automatic prompting occurs for these options Note that an internal...

Страница 37: ...MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 2 2 Model 2234 Keyboard SECTION 2 25 ...

Страница 38: ...UP PROMPTING SEQUENCE In the sequence that follows the mnemonics used by the computer to request data are shown in capital letters The data required by the computer is entered simply by keying in the required numbers via the front panel keyboard and then pressing the ENTR key The computer will display OK if the number entered is acceptable The computer then steps to the mnemonic for the next param...

Страница 39: ...e following table RANGE ER Range Error is displayed for any other entry Configuration Number Transducer Number Meter Tubes Type S 1 1 S 2 2 S S 3 3 S S S 4 4 S S S S 5 5 S S S S S 6 1 D 7 2 D S 8 2 D D 9 3 D S S 10 3 D D S 11 4 D S S S S Single Differential Pressure Transmitter D Dual Stacked Differential Pressure Transmitters SECTION 2 27 ...

Страница 40: ...65 calculated density 3 Frequency densitometer Solartron type 4 Frequency densitometer Barton type 5 Frequency densitometer Agar type C IE Enter the Isentropic Exponent ratio of specific heat Value must be more than 0 0 D TFS DEGF Enter the full scale value for measured temperature in o F E TZ DEGF Enter the zero value for measured temperature in o F F DFS LBF3 Enter the full scale value for measu...

Страница 41: ...pressure in PSIA J MFS LBHR Enter the station full scale mass rate in pounds per hour LBHR K DOF LBF3 Enter the full scale value for the density output in pounds per cubic foot L DOZ LBF3 Enter the zero value for the density output in pounds per cubic foot M TK Enter the numerical value of the integer for the Station Totalizing Factor Acceptable values are 9 to 9 Refer to paragraph 2 6 3 1 for det...

Страница 42: ...water for measured differential pressure in the indicated transducer HF1 HF2 etc _______________________________________________________ NOTE See Field Wiring Diagram for definition of transducers relative to configuration selected _______________________________________________________ Q IDn Inch Enter the orifice diameter for the respective line ID1 ID2 etc R ODn INCH Enter the orifice diameter ...

Страница 43: ...rough W are repeated in succession for each line After the Startup Prompting Sequence is completed all of the data required is entered the computer will display READY to indicate that it can begin flow calculations However during initial startup several alarm conditions will necessarily have occurred since the computer previously has not been programmed The red lamp indicator on the computer s con...

Страница 44: ...umbers begin to repeat the condition s causing the alarm s still exists and must be eliminated Refer to Error Code Diagnostic Table 2 5 to determine the possible cause of the alarm and suggested solutions After all alarm and alarm memory conditions are cleared both the red and amber indicators will go out The display will indicate READY Paragraph 3 5 1 of this manual describes the basic use of ope...

Страница 45: ...ype 1 2 3 4 or 5 2 ENTR ________ para 2 6 2 B C IE Isentropic Exponent 1 3622 ENTR ________ para 2 6 2 C D ENTER TFS Enter full scale for measured temperature in o F 150 ENTR ________ para 2 6 2 D E ENTER TZ Enter zero scale for measured temperature in o F 50 ENTR ________ para 2 6 2 E F ENTER DFS Enter full scale for measured density in pounds per cubic foot 20 ENTR ________ para 2 6 2 F G ENTER ...

Страница 46: ...d static pressure in PSIA 0 ENTR ________ para 2 6 2 I J ENTER MFS Enter full scale mass for station rate in LB HR 2 1 5 ENTR ________ para 2 6 2 J K ENTER DOF Enter full scale density output in LB CF 20 ENTR ________ para 2 6 2 K L ENTER DOZ Enter zero scale density output in LB CF 0 ENTR ________ para 2 6 2 L M ENTER TK Enter station totalizing factor 1 ENTR ________ para 2 6 2 M N ENTER LF1 Lin...

Страница 47: ...__ para 2 6 2 P Q ENTER ID1 Enter inside diameter of meter tube for line 1 in inches 8 071 ENTR ________ para 2 6 2 Q R ENTER OD1 Enter orifice diameter of meter tube for line 1 in inches 4 ENTR ________ para 2 6 2 R S ENTER TL1 Enter pressure tap location for line 1 1 upstream 2 downstream 1 ENTR ________ para 2 6 2 S T ENTER PA1 Enter plate expansion coefficient for line 1 9 25 6 ENTER ________ ...

Страница 48: ...ent temperature for line 1 60 0 ENTER ________ para 2 6 2 W N ENTER LF2 Linen cutoff in InH20 for line 2 1 ENTR ________ para 2 6 2 N O ENTER LK2 Enter totalizing factor for line 2 1 ENTR ________ para 2 6 2 O P ENTER HF2 Enter full scale measured differential pressure for line 2 100 ENTR ________ para 2 6 2 P Q ENTER ID2 Enter inside diameter of meter tube for line 2 in inches 8 071 ENTR ________...

Страница 49: ... Reference S ENTER TL2 Enter pressure tap location for line 2 1 upstream 2 downstream 1 ENTR ________ para 2 6 2 S T ENTER PA2 Enter plate expansion coefficient for line 2 9 25 6 ENTER ________ para 2 6 2 T U ENTER PT2 Enter plate measurement temperature for line 2 60 0 ENTER ________ para 2 6 2 U V ENTER LA2 Enter pipe expansion coefficient for line 2 6 2 6 ENTER ________ para 2 6 2 V SECTION 2 3...

Страница 50: ...Example Measurement Data from Table 2 2 Actual Data to be Entered Reference W ENTER LT2 Pipe measurement temperature for line 2 60 0 ENTER _______ para 2 6 2 W X READY The computer is ready for flow computations if further data entries for options are not required See Table 2 1b 2 2 and 2 3 for optional data requirements SECTION 2 38 ...

Страница 51: ...__ 3 8 9 56 P07 PRINT LOCATION __________ 3 8 9 57 P07 PRINT LOCATION _________ 3 8 9 58 P08 PRINT LOCATION _________ 3 8 9 59 P09 PRINT LOCATION _________ 3 8 9 60 P10 PRINT LOCATION _________ 3 8 9 61 P11 PRINT LOCATION _________ 3 8 9 62 P12 PRINT LOCATION _________ 3 8 9 63 P13 PRINT LOCATION _________ 3 8 9 64 P14 PRINT LOCATION _________ 3 8 9 65 P15 PRINT LOCATION _________ 3 8 9 66 P16 PRI...

Страница 52: ...NT LOCATION __________ 3 8 9 73 P23 PRINT LOCATION __________ 3 8 9 74 P24 PRINT LOCATION _________ 3 8 3 75 P25 PRINT LOCATION __________ 3 9 9 76 P26 PRINT LOCATION __________ 3 8 9 77 P27 PRINT LOCATION __________ 3 8 9 78 P28 PRINT LOCATION _________ 3 8 9 79 P29 PRINT LOCATION _________ 3 8 9 80 P30 PRINT LOCATION _________ 3 8 9 81 P31 PRINT LOCATION _________ 3 8 9 82 P32 PRINT LOCATION ___...

Страница 53: ...Y Enter 02 to 99 x100 ms __________ 3 8 2 45 DTE DATE Day of Year Enter 001 366 __________ 3 8 3 46 TIM CLOCK in Hours Minutes Enter 00 00 thru 23 59 __________ 3 8 4 47 DPT START DAILY PRINT at 00 23 Hours __________ 3 8 5 48 INT INTERVAL between printings 00 24 Hours __________ 3 8 6 49 ID I D No 000 999 __________ 3 8 7 50 BUD BAUD RATE 150 2400 __________ 3 8 8 SECTION 2 41 ...

Страница 54: ...__ 3 9 3 31 A1 Densitometer Scaling Constant __________ 3 9 3 32 A2 Densitometer Scaling Constant __________ 3 9 3 33 DTC Densitometer Temperature Correction __________ 3 9 3 34 CT Densitometer Calibration Temperature __________ 3 9 3 35 PO Densitometer Pressure Coefficient __________ 3 9 3 36 K Densitometer Pressure Coefficient __________ 3 9 3 37 DCF Densitometer Correction Factor __________ 3 9...

Страница 55: ...ifferential pressure will appear on the display as a varying value VAR unless the operator manually enters a fixed FXD value Should a specific transducer be inoperative or be unavailable a FXD value can be entered manually in lieu of the measured varying value per paragraph 3 5 1 2 6 3 1 LINE AND STATION TOTALIZING FACTORS The Station or the Line Totalizing Factors may need to be different from th...

Страница 56: ...10o 300 LBH x 24 hour 10o 7200 Pulses lbs But more resolution is desired and a Line Volume Totalizing Factor of 10 1 is entered totalizing in tenths of pounds This will yield 72 000 pulses tenths of pounds per day 300 x 24 10 1 for each meter or ten times the number of pulses for a factor of 10 300 24 10 1 72000 Pulses lbs However it is the station volume that drives the computer counter and relay...

Страница 57: ...inoperable if the print option was not selected with the purchase of the computer Refer to paragraph 3 8 of the manual for setup and printing instructions B Frequency type Densitometer Input Option The frequency densitometer input option provides for the computer to determine line density from the output of a frequency type densitometer Read Codes 30 through 37 allow the operator to enter and read...

Страница 58: ...ING THE DISPLAY ALWAYS ON FUNCTION The operator can cause the computer display to remain ON if desired Key 1 then press CMD The display can be returned to the power save timeout mode by keying 2 then pressing CMD When the instrument startup procedures are complete set the internal enable disable switch on PC Board No 1 to the disable position to prevent unauthorized or accidental data entry Ensure...

Страница 59: ...nitored upstream from the orifice C The product is Ethylene and API 2565 will be used D Temperature range 50 to 150o F E Static pressure range 0 to 1000 PSIA F Density output range 0 to 20 LBF3 G Differential pressure range 0 to 100 inches of water each tube H Line size D 8 071 inches actual inside diameter each tube I Orifice size d 4 000 inches each orifice The subsequent display keying sequence...

Страница 60: ...nated C Simultaneously press CMD and CLR to initialize the instrument D Review the Supplemental Startup instructions of paragraph 2 6 2 E Refer to paragraph 3 7 2 and clear all existing error conditions F After keying in your sequence return the enable disable switch to the disable position and confirm that the green enabled indicator is extinguished The instrument is now fully operational and rea...

Страница 61: ... ENTER QDI 19 ENTER TL1 20 ENTER PA1 21 ENTER PT1 22 ENTER LA1 23 ENTER LT1 24 ENTER LF2 25 ENTER LK2 26 ENTER MF2 27 ENTER ID2 28 ENTER QD2 29 ENTER TL2 30 ENTER PA2 31 ENTER PT2 32 ENTER LA2 33 ENTER LT2 2 ENTR 2 ENTR 2 ENTR 150 ENTR 50 ENTR 20 ENTR 0 ENTR 1000 ENTR 0 ENTR 2 1 5 ENTR 20 ENTR 0 ENTR 1 ENTR 1 ENTR 1 ENTR 100 ENTR 8 071 ENTR 4 ENTR 1 ENTR 9 25 6 ENTR 60 0 ENTR 6 2 6 ENTR 60 0 ENTR ...

Страница 62: ...ond The totals register cannot be incremented at a rate in excess of 25 units per second A Station Totalizing Factor of 101 is selected to yield maximum resolution while limiting the totals register increment rate to 5 7 units per second 3 The Line Totalizing Factor is selected for consistency with the station totalizing units See note 2 This is not required for proper computer operation However t...

Страница 63: ...er than 102 4 Density out of range densitometer malfunctioning or mis calibrated wiring error 1 Check VAR value of read code 0 DEN LBF3 1 Check values of read codes 12 DFS and 13 DZ 1 If read code 0 value is greater than read code 12 1 If read code 0 value is less than read code 13 1 Place read code 0 in FXD mode Enter average density paragraph 3 6 2 1 Enter correct full scale and zero values per ...

Страница 64: ...ange transducer malfunctioning or mis calibrated wiring error 1 Check VAR value of read code 1 flowing temperature 1 Check values of read code 5 TFS and read code 6 TZ 1 If read code 0 value is greater than read code 5 1 If read code 0 value is less than read code 6 1 Place read code 1 in FXD mode Enter average operating temperature paragraph 3 6 2 1 Enter correct full scale and zero values per pa...

Страница 65: ...ure out of range transducer malfunctioning or mis calibrated wiring error 1 Check VAR value of read code 2 1 Check values of read code 9 PFS and read code 10 PZ 1 If read code 2 value is greater than read code 9 1 If read code 2 value is less than read code 10 1 Place read code 2 in FXD mode Enter average operating pressure paragraph 3 6 2 1 Enter correct full scale and zero values per paragraph 3...

Страница 66: ...de 261 H2O 2 Check code number entered for CONFIG system configuration command code 5 1 Enter new CONFIG code number 1 Check wiring 2 Verify pressure 3 Check transducer 04 Line 2 differential pressure under range 1 Pressure transducer not used for line 2 2 Pressure out of range transducer malfunctioning or mis calibrated wiring error 1 Check VAR value of read code 262 H2O 2 Check code number enter...

Страница 67: ...ode 263 H2O 2 Check code number entered for CONFIG system configuration command code 5 1 Check wiring 2 Verify pressure 3 Check transducer 1 Enter new CONFIG code number 06 Line 4 differential pressure under range 1 Pressure transducer not used for line 4 2 Pressure out of range transducer malfunctioning or mis calibrated wiring error 1 Check VAR value of read code 264 H2O 2 Check code number ente...

Страница 68: ...or 1 Check VAR value of read code 265 H2O 2 Check code number entered for CONFIG system configuration command code 5 1 Enter new CONFIG code number 1 Check wiring 2 Verify pressure 3 Check transducer 08 Temperature out of range for density calculation NOTE error code 8 is disabled if 12 CMD is enabled 1 Incorrect or malfunctioning temperature probe being used for computing density calculation 1 Ch...

Страница 69: ...reater than 25 pulses per second 1 Flow rate too high totalizing factor set too low 1 Check read code 17 TK for proper factor value paragraph 3 6 5 1 Enter a corrected totalizer factor per paragraph 2 6 3 1 11 Invalid ratio of pipe I D to orifice diameter 1 Incorrect setting of inside line diameter and or line orifice diameter 1 Check value of inside pipe diameter for individual lines read codes 2...

Страница 70: ...r individual lines read codes 231 232 233 234 and 235 H2O 1 Enter correct full scale value per paragraph 3 6 1 14 Abnormal value for line extension factor 1 Setting of full scale value s too low for differential line pressure and or low zero scale for static pressure 1 Check full scale value of differential pressure for individual lines read codes 231 232 233 234 and 235 H2O 2 Check zero scale val...

Страница 71: ...9 Analog density greater than full scale 1 Densitometer not used 2 Incorrect full scale entered for densitometer 3 Densitometer output is greater than 102 1 Check value of read code 12 DOF LBF3 1 If read code 0 value is less than 12 1 Enter correct full scale value per paragraph 3 6 5 1 Check wiring 2 Verify density 3 Check densitometer 20 Analog density less than zero scale 1 Densitometer not use...

Страница 72: ...ode 261 H2O 2 Check code number entered for CONFIG system configuration command code 5 1 Enter new CONFIG code number 1 Check wiring 2 Verify pressure 3 Check transducer 22 Line 2 differential pressure over range 1 Pressure transducer not used for line 2 2 Pressure out of range transducer malfunctioning or mis calibrated wiring error 1 Check VAR value of read code 262 H20 2 Check code number enter...

Страница 73: ...code 263 H2O 2 Check code number entered for CONFIG system configuration command code 5 1 Enter new CONFIG code number 1 Check wiring 2 Verify pressure 3 Check transducer 24 Line 4 differential pressure over range 1 Pressure transducer not used for line 4 2 Pressure out of range transducer malfunctioning or mis calibrated wiring error 1 Check VAR value of read code 264 H20 2 Check code number ente...

Страница 74: ...er 1 Check wiring 2 Verify pressure 3 Check transducer 26 28 UNUSED 29 Excessive totalized display rate 1 Totalized rate exceeds capacity of buffer accumulator Flow rate too high totalizing factor too low 1 Check station totalizing factor value TK per read code 17 1 Enter a corrected totalizer factor per paragraph 3 6 5 30 One volt calibration error 1 Possibly 24 volt circuit is out of tolerance 1...

Страница 75: ...lution 31 five volt calibration error 1 Possibly 24 volt circuit is out of tolerance 1 Check voltage on PC Board 1 with a digital voltmeter for 5 000 volt Check command code 99 for FIC 1 Adjust 24 volt supply output for 5 000 volts per paragraph 4 2 4 2 Perform reference and rate voltage calibrations per paragraphs 4 3 1 and 4 3 2 SECTION 2 63 ...

Страница 76: ...__________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank SECTION 2 64 ...

Страница 77: ... computer calculated values and vice versa and operating instructions for options available for the Model 2234 computer 3 2 BASIC CALCULATIONS Where WHn Line hourly mass rate in pounds per hour LBHR FBn Instrument calculated or operator entered line basic orifice factor FRn Instrument calculated line Reynolds factor Yn Instrument calculated expansion factor K Constant 10LKn and LKn operator entere...

Страница 78: ...re computed in accordance the 1991 version of MPMS Chapter 14 3 ANSI API 2530 AGA 3 _______________________________________________________ NOTE WHn error is less than 0 01 when process inputs are fixed operator entered values ________________________________________________________ SECTION 3 66 ...

Страница 79: ... complete the operator may access data enter additional parameters revise previously entered parameters and request specific computer actions The two categories of operator control are described as follows Refer to Tables 3 1 and 3 2 Read Codes and Command Codes A The operator may access or enter specific parameters relating to the data measurement such as 1 Cause the computer to display a specifi...

Страница 80: ...enable disable switch must be enabled and the green enable lamp on the front panel must be ON 1 Control the display ON all the time ON for one minute 2 Display any out of tolerance error conditions See Table 3 3 3 Reset flow totals for mass Instructions for requesting these actions from the computer are described in paragraph 3 7 SECTION 3 68 ...

Страница 81: ...None 8 DZ FXD LBF3 Density Zero None 9 PFS FXD PSIA Pressure Full Scale None 10 PZ FXD PSIA Pressure Zero None 11 MFS FXD LBHR Mass Rate Full Scale 0 0 12 DOF FXD LBF3 Density Output Full Scale 0 0 13 DZ FXD LBF3 Density Output Zero 0 0 17 TK FXD Station Totalizing Factor 9 to 9 18 WHT F V LBHR Station Total Mass Rate 0 0 29 TC FXD Temperature Coefficient None 30 A0 FXD Densitometer Scaling Consta...

Страница 82: ...to 9 23n HFn FXD InH2O Line n DP Full Scale 0 0 24n IDn FXD INCH Line n Inside Diameter 0 0 25n ODn FXD INCH Line n Orifice Diameter 0 0 26n HWn F V InH2O Line n Differential 0 0 27n EXn F V Line n Extension 0 0 28n CDn F V Line n Discharge Coefficient 0 0 29n Yn F V Line n Expansion Factor 0 0 30n TLn FXD Line n Tap Location 1 2 31n FMn F V Line n Mass Flow Factor 0 0 32n PAn FXD Line n Plate Alp...

Страница 83: ...Use Densitometer Input Selects type of density input for rate and totals calculations 3 7 1 7 Use API 2565 Instructs the computer to use API 2562 density calculation as density input 3 7 1 8 Display Calculation time Causes the display in seconds of the length of calculations being performed by the computer 3 7 3 12 Disable Error Code 8 Turns OFF low temperature alarm 3 7 1 13 Enable Error Code 8 T...

Страница 84: ...for bench calibration 3 7 2 through 97 Display A D Channel 7 in Hexadecimal Causes the display of analog input voltages in hexadecimal form for bench calibration 3 7 2 98 Automatic Calibration of Zero Value to OE4 Hexadecimal Causes the display of the Zero Value of reference analog circuits 3 7 2 99 Automatic Calibration of Full Scale Value to FIC Hexadecimal Causes the display of the Full Scale V...

Страница 85: ...emperature is beyond range of API 2565 i e less than 65o F or greater than 166 9o F 9 Indicates line pressure is beyond range of API 2565 i e less than 200 psia or greater than 2099 9 psia 10 Total volume incremented faster than 25 HZ 11 Invalid ratio of pipe I D to orifice diameter 12 Rate output overscale 13 Ratio of line differential to static pressure greater than 4 14 Extension less than 5 15...

Страница 86: ...de No Description 22 Line 2 differential pressure over range 23 Line 3 differential pressure over range 24 Line 4 differential pressure over range 25 Line 5 differential pressure over range 29 Overflow counts exceed 65 000 30 One volt calibration error 31 Five volt calibration error SECTION 3 74 ...

Страница 87: ...play key The temporary display of terms and values can be changed to a permanent display display always ON after startup Press 1 then CMD to cause the display to remain ON Press 2 then CMD to return the display to the timeout mode if desired 3 4 2 VALIDITY CHECKS OF DATA ENTRIES The computer compares each operator entry with preprogrammed range and format requirements An unacceptable entry causes ...

Страница 88: ...quent paragraphs of this manual A Enter ENTR Inputs into memory any valid data shown on the Alpha Numeric display B Display DSPY Recalls blanked data to the display when operation is in display timeout see paragraph 3 7 1 C Numerals periods and minus sign For entering numerical data or function codes D Read READ Entering a one two or three digit function numerical code and pressing READ causes the...

Страница 89: ...commands include the display of errors and the resetting of totals Totals can be reset only when the green LED is lighted I Up Arrow Pressing results in the following actions by the computer 1 Reading data causes the computer to step back to the previous data code For example if the data corresponding to the Read Code 2 is being viewed pressing causes the computer to display the data corresponding...

Страница 90: ...uter into the error memory list The amber indicator remains lighted until all error conditions have ceased and the operator has cleared the error memory list as described in paragraph 3 7 2 The green indicator is ON when the operator entry enable disable switch on PC Board No 1 is in the enable position The green indicator being ON indicates that the operator can enter or alter any of the respecti...

Страница 91: ...easured or an operator entered value Only one value can be actively used in the computer computations The operator can select and switch to which ever type of value measured calculated or operator entered that is to be active Generally an operator entered parameter value is used in lieu of a measured value when a problem occurs such as when a line transmitter is malfunctioning and is being removed...

Страница 92: ...red value being held inactive Enter the desired value Press ENTR The display will show OK to indicate that the value is within the acceptable range then will show the parameter mnemonic the units of measurement and finally the value that was entered 3 5 2 SWITCHING MEASURED VALUES AND OPERATOR ENTERED VALUES A Assume that the temperature transducer in the line is suspected of malfunctioning Assume...

Страница 93: ...its calculations until the defective transducer can be returned to service Examine the current inactive FXD value Key Display FXD Pressed TF FXD Fixed FXD Released DEGF Units of Measure then 0 00 C The asterisk between TF and FXD indicates that this value is not active not being used by the computer for flow computations Instead the computer is using the 56 3 VAR output from the defective transduc...

Страница 94: ...d into the computer calculations by pressing ENTR In the example above FXD was the last value type displayed before pressing ENTR to enter the 78 degrees so ENTR was pressed twice once to enter the temperature as the inactive FXD value and a second time to enter the inactive FXD value into the computer as the active value Note that the display of TF FXD contains no asterisk signifying that the FXD...

Страница 95: ...ed previously Next view the current VAR value Key Display VAR Pressed TF VAR Variable VAR Released DEGF Units of Measure then 76 4 Note that for the example the VAR value is now 76 4 degrees and the asterisk signifies that the value is not active not being used for flow computation Press ENTR to make VAR the active value Key Display ENTR TF VAR Variable then OK then DEGF Units of Measure then 76 4...

Страница 96: ...ition Operator accessible data are described below by groups as they apply to different operational functions A numerical listing of the related access codes Read Codes appears in Table 3 1 A code by code description of the Read Codes appears in Appendix A at the back of this manual Data request group descriptions appear in the following order starting in paragraph 3 6 1 A Transducer Scaling B Mea...

Страница 97: ...R A Temperature Transducer Full Scale TFS Read Code 5 Temperature Transducer Zero TZ Read Code 6 Full scale and zero temperature values used by the computer to scale input signals from the temperature transducer are displayed by using Read Codes 5 and 6 Temperature is displayed in degrees Fahrenheit B Densitometer Full Scale GFS Read Code 7 Densitometer Zero GZ Read Code 8 Full scale and zero dens...

Страница 98: ...sure is displayed in inches of water FXD values greater than zero are acceptable Refer to Field Wiring Diagram DE 9144 for the definition of the transducer per configuration selected 3 6 2 MEASUREMENTS Read Codes for measurements display measured input values used by the computer in calculation of the flow rates and flow totals Measurements are displayed as VAR values The values may be changed to ...

Страница 99: ...e 2 The measured static pressure value used by the computer to calculate flow rates and flow totals is displayed by using Read Code 2 The pressure is displayed in PSIA FXD values between 0 0 and 5000 PSIA are acceptable D Line Differential Pressure HWn Read Code 26n The pressure differential used by the computer to calculate mass rates and mass totals is displayed by Read Code 26n for the line sel...

Страница 100: ... used by the computer for calculating line mass flow is displayed for line number n by using Read Code 24n The value is displayed in inches FXD values between 1 0 and 50 0 inches are acceptable B Line Orifice Diameter ODn Read Code 25n The line orifice diameter value used by the computer for calculating mass flow is displayed for line number n by using Read Code 25n The value is displayed in inche...

Страница 101: ...te WHT Read Code 18 The total current hourly mass rate may be displayed by using Read Code 18 The rate is displayed in LBHR FXD values from 0 0 and above may be entered for testing purposes only FXD value entries will affect flow totals if the computer is on line C Line Hourly Flow Rate WHn Read Code 20n The hourly flow rate of a selected line number n may be displayed by using Read Code 20n The r...

Страница 102: ...es will affect flow totals if the computer is on line F Line Discharge Coefficient CDn Read Code 28n The discharge coefficient is calculated by the flow computer in accordance with procedure 3 2 9 of Chapter 14 3 4 of the Manual of Petroleum Measurement Standards May 6 1991 FXD values from 0 0 and above may be entered for testing purposes only G Line Expansion Factor Yn Read Code 29n The expansion...

Страница 103: ...a VAR value A typical mass flow rate Read Code entry and display is shown as follows Key Display 8 8 0 Base Read Code 80 1 Line No 801 Line 1 READ Pressed TOTAL L1 Base unit of measure READ Released LBHR E0 then A power of ten totalizing 00000000 factor that is multiplied by the base unit of measure i e LBHR times 10 to the zero power E0 LBHR times 1 Line and Station Identification LT Station L1 L...

Страница 104: ...as a VAR value A typical flow total Read Code entry and display is shown as follows Key Display 9 9 0 Read Code 90 1 Line No 901 Line 1 READ Pressed TOTAL L1 Base unit of measure READ Released LBS E0 then A power of ten totalizing 00000000 factor that is multiplied by the base unit of measure i e LBS times 10 to the zero power E0 LBS times 1 Line and Station Identification LT Station L1 Line 1 L2 ...

Страница 105: ...ut Zero DOZ Read Code 13 The full scale and zero values for the density analog output may be displayed by using Read Codes 12 and 13 Display is in LBF3 B Station Totalizing Factor TK Read Code 17 A power of ten multiplier the totalizing factor that is being applied to the station totalization is displayed with the use of Read Code 17 FXD entry of integer exponent values between 9 and 9 are accepta...

Страница 106: ...ad Code 22n The operator may enter exponent values between 9 and 9 refer to paragraph 2 6 3 1 for details pertaining to totalizer scaling Key in the values and press ENTR If no exponent is entered to factor the totals the computer uses a totalizing factor of 10o 3 6 6 OVER RIDES Calculation required for product other than mass flow will need to be entered into the computer as FXD values by the ope...

Страница 107: ...user convenience the computer actions are described by groups as they apply to different operational functions A numerical listing of the Command Codes appear in Table 3 2 Set the enable disable switch to the enable position to perform all actions except as noted for each specific Command Code The group descriptions appear in the following order starting in paragraph 3 7 1 A Operational Actions B ...

Страница 108: ... a blinking asterisk B Use Densitometer Input Command Code 06 Use Densitometer Input Command Code 06m The computer contains only one of the 06 Command Codes for densitometer input Refer to the program option Command Code 06 instructs the computer to use the analog densitometer input or the operator entered FXD value if no densitometer is used for rate and totalization calculations The computer wil...

Страница 109: ... Code 8 The computer will acknowledge this command code even if the Enable Disable switch is in the Disable position E Enable Error Code 8 Command Code 13 Command Code 13 initiates sensing the Low Temperature Alarm Error Code 8 The computer will acknowledge this command even if the Enable Disable switch is in the Disable position F Display Error Code 8 Command Code 14 Command Code 14 causes the co...

Страница 110: ...s The amber status indicator on the front panel is ON to indicate that the error condition has been entered into the computer error memory even if the error no longer exists The amber indicator remains ON until the operator clears the memory list The computer will acknowledge this command even if the Enable Disable switch is in the Disable position Command Code 0 displays the list of errors in mem...

Страница 111: ...s and software diagnostic testing They are not applicable for field use C Automatic Calibration of Zero Value to 0E4 Hexadecimal Command Code 98 Automatic Calibration of Full Scale Value to F1C Hexadecimal Command Code 99 Command Codes 98 and 99 display the zero and full scale values of reference analog circuits in the computer as described in paragraph 4 3 Field Calibration D Memory Diagnostics f...

Страница 112: ...start a configuration CNFIG prompting sequence The PROM memory diagnostic check is run every ten seconds during normal use of the computer The diagnostic test runs successfully even if all RAM memory fails and nearly all PROM memory fails All that is required is that the small section of PROM memory containing the diagnostic routines be operable If this portion of memory fails the system watchdogs...

Страница 113: ...I C Number none 0800 1000 1800 2000 2800 7000 7400 7800 7C00 8000 8800 9000 9800 A000 A800 B000 B800 PROM PROM PROM PROM PROM PROM RAM RAM RAM RAM PROM PROM PROM PROM PROM PROM PROM PROM 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 U12 Failure causes watchdog U3 U13 U4 U14 U5 U19 AND U20 U24 AND U25 U31 AND U32 U37 AND U38 U11 U12 U15 U16 U17 U19 U20 U21 SECTION 3 101 ...

Страница 114: ...mber I C Number none 0800 1000 1800 2000 7000 7400 7800 7C00 8000 8800 9000 9800 A000 A800 B000 B800 PROM PROM PROM PROM PROM RAM RAM RAM RAM PROM PROM PROM PROM PROM PROM PROM PROM 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 U12A Failure causes watchdog U3A U13A U4A U14A U19 AND U20 U24 AND U25 U31 AND U32 U37 AND U38 U11 U12 U15 U16 U17 U19 U20 U21 SECTION 3 102 ...

Страница 115: ...tered by the operator during initial startup may be displayed with the use of Command Code 5 The display of the configuration appears as shown below when Command Code 5 is entered into the computer CONFIG then CFG y z where x Density type DENTYP selected DENST A for analog densitometer API 2565 for API calculated DENST Fw for frequency densitometer input w Level 1 2 or 3 y Number of meter tubes an...

Страница 116: ...m memory and repeating the Startup Prompting Sequence as described in paragraph 2 6 Erase the startup parameters by simultaneously pressing CMD and CLR B Display Calculation Time Command Code 8 The length of the calculation currently being performed by the computer is displayed by using Command Code 8 The display is in seconds SECTION 3 104 ...

Страница 117: ...where n 1 2 3 4 or 5 or to the station n 0 are reset by the use of Command Code 80n A typical line total reset is entered and displayed as in the following example Key Display 8 8 0 Basic Command 80 Code 1 Line No 801 CMD Clear L1 Gross Total Reset Line 1 ENTR OK then READY Line and Station Identification LT Station L1 Line 1 L2 Line 2 L3 Line 3 L4 Line 4 L5 Line 5 SECTION 3 105 ...

Страница 118: ...rial form Access to all print functions is provided by Read Codes 44 through 82 A calendar clock keeps track of days hours and minutes permitting fully automatic printout in addition to either local keyboard or remote contact closure commands Temporary memory storage locations are used when storing data to be printed thereby eliminating any significant time skew of data due to speed limitations of...

Страница 119: ...ata Print location 02 data Print location 03 data through Print location 32 data 3 8 2 3 8 3 3 8 4 3 8 5 3 8 6 3 8 7 3 8 8 3 8 9 3 8 9 3 8 9 3 8 9 Data may be A Any valid Read Code B Blank line by entering which is the keyboard negative symbol will provide single line spacing between data groups C NOT USED If no entry is made that line is omitted during printout A double negative entry may be used...

Страница 120: ...o allow the printer to return carriage for the next line of data to be printed FXD values between 2 and 99 X100 are acceptable The delay time defaults to 2 if no value is entered Such a delay is required for proper interface with printers which do not incorporate memory Consult the printer operation manual to determine if a delay is required and if so how much Example A delay time of 5 is entered ...

Страница 121: ...and minutes are 00 00 through 23 59 3 8 5 DAILY PRINT TIME DPT READ CODE 47 The time of the first daily printout is displayed in hours by using Read Code 47 Acceptable operator entry values are 00 through 23 3 8 6 PRINT INTERVAL INT READ CODE 48 The time increment between successive printout initiations from paragraph 3 8 4 and extending over a 24 hour period is displayed by using Read Code 48 Exa...

Страница 122: ...de The Model 2234 hardware and software is two wire RS 232C compatible and is specifically designed to interface with an Anadex DP1010 series 40 column printer Due to printer speed limitations the Model 2234 computer will output one character every 20 msec regardless of the baud rate selected The baud rate selected for the Model 2234 must match the designed baud rate of the printer This informatio...

Страница 123: ...ay of data If all 32 table entries are NOT USED only Line No 1 ID date and time is printed Sample Printout Read Code Function Description Engineering Units and Multipliers Numeric Data Print table 26 lines are not used ID 789 DATE 800 RATE 801 RATE 802 RATE 900 TOTAL 901 TOTAL 902 TOTAL 045 LT L1 L2 LT L1 L2 TIME 14 00 LBHR E0 LBHR E0 LBHR E3 LBS E0 LBS E0 LBS E3 0 0 0 00041674 00410285 00008972 S...

Страница 124: ...er registers allows the calculated density to be updated at three second intervals The computer calculates the corrected density in LBF3 The corrected density is displayed using Read 0 Entering a FXD operator entered value provides an over ride of the calculated value 3 9 1 CALCULATIONS The computer calculates the corrected density in accordance with the following equations The Read Codes for ente...

Страница 125: ...operator entered densitometer scaling constants Read Codes 30 31 and 32 respectively Where DT the density corrected for temperature effects on the densitometer in gm cc DL as previously defined TC temperature coefficient Read Code 29 TF flowing temperature in DEGF Read Code 1 CT a densitometer calibration temperature in DEGF Read Code 34 DTC temperature coefficient in gm cc o F Read Code 33 SECTIO...

Страница 126: ...ter correction factor Defaults to 1 0 upon computer cold start DT as previously defined PRS measured pressure Read Code 2 K pressure coefficient read Code 36 PO pressure coefficient Read Code 35 A4 pressure coefficient Read Code 42 A5 pressure coefficient Read Code 43 4 DEN DLC 62 4278 62 4278 Factor for converting from gm cc to LBS cf SECTION 3 114 ...

Страница 127: ... Frequency Densitometer option DENTYP appears immediately following CNFIG the first entry in the sequence Acceptable entries for DENTYP are Code Description 1 Analog or no densitometer input 2 Use API 2565 for density calculation 3 Frequency densitometer Solartron type or UGC type 4 Frequency densitometer Barton type 5 Frequency densitometer Agar type SECTION 3 115 ...

Страница 128: ... start unless otherwise noted Read Codes display mnemonic terms and engineering unit display terms are defined as follows Table 3 6 Fixed Only Constants Read Eng Code Literal Units Description 29 TC None Densitometer Temperature Coefficient 30 A0 None Densitometer Scaling Constant 31 A1 None Densitometer Scaling Constant 32 A2 None Densitometer Scaling Constant 33 DTC None Densitometer Temperature...

Страница 129: ...tometer calibration certificate the following is determined 1 Units of calibration are KG M3 2 Calibration temperature is 20o C 3 Calibration pressure is 1 BAR 4 Coefficient data is K0 1112 63 K1 0 729462 K2 4 08188 E 03 K18 4 9619 E 05 K19 0 021627 K20A 3 857 E 05 K20B 4 47 E 08 K21A 0 04663 K21B 1 2074 E 03 SECTION 3 117 ...

Страница 130: ...R Step 1 Compute using a hand calculator the equivalent coefficients for density units of gm cc temperature units of o F and pressure units of PSI from the following relationships Ao K0 1000 A1 K1 1000 A2 K2 1000 CT Cal Temp x 9 5 32 TC K18 x 5 9 SECTION 3 118 ...

Страница 131: ...ficients given above the proper entries would be as follows A0 1 11263 Read Code 30 A1 7 29462 4 Read Code 31 A2 4 08188 6 Read Code 32 DTC 1 2015 5 Read Code 33 CT 68 Read Code 34 TC 2 7566 5 Read Code 29 P0 1 20897 Read Code 35 K 2 65931 Read Code 36 A4 2 12494 4 Read Code 42 A5 5 7397 3 Read Code 43 Exercise care to insure applicable units consistency when using the above or similar relationshi...

Страница 132: ...ation certificate the following is determined 1 Units of calibration are gm cc 2 Calibration temperature is 70o F 3 Calibration pressure is 14 7 PSI 4 Coefficient data is A 7 4145 B 0 6917 5 Equation from data sheet is Pressure coefficient 0 0014 GM cc 1000 PSI Temperature coefficient 0 0054 GM cc 100o F SECTION 3 120 ...

Страница 133: ...0 A4 0 0 A5 0 0 Step 2 Enter the results obtained using the appropriate Read Codes For the sample coefficients given and assuming 0 5 gm cc density the proper entries would be as follows A0 0 6917 Read Code 30 A1 0 0 Read Code 31 A2 7 4145 Read Code 32 DTC 5 4 5 Read Code 33 CT 70 Read Code 34 TC 0 0 Read Code 29 P0 0 0 Read Code 35 K 2 8 Read Code 36 A4 0 0 Read Code 42 A5 0 0 Read Code 43 SECTIO...

Страница 134: ...so as to yield density in gm cc 3 9 4 3 AGAR DENSITOMETERS From the densitometer calibration certificate the following is determined 1 Units of calibration are LB ft 3 2 Calibration temperature is 20 8o C 3 Temperature coefficient 0 000298 µsec o C 4 Calibrated span in LB ft 3 is 20 5 Calibrated span in µsec is 116 050 6 Coefficient data is T0 195 048 µsec D0 10 2701 LB ft 3 K 1 2425 SECTION 3 122...

Страница 135: ...___________________ Step 1 Compute using a hand calculator the equivalent coefficients for density units of gm cc and temperature units of o F from the following relationships A0 D0 K 2 62 42778 TC 0 0 K 0 0 P0 0 0 A4 0 0 A5 0 0 SECTION 3 123 ...

Страница 136: ...iate Read Codes For the data given the proper entries would be as follows A0 1 24618 1 Read Code 30 A1 4 09069 4 Read Code 31 A2 5 37292 6 Read Code 32 DTC 4 5704 7 Read Code 33 CT 69 44 Read Code 34 TC 0 0 Read Code 29 P0 0 0 Read Code 35 K 0 0 Read Code 36 A4 0 0 Read Code 42 A5 0 0 Read Code 43 SECTION 3 124 ...

Страница 137: ... 1 2 3 4 or 5 y type of densitometer input A analog F frequency z type of densitometer used 1 3 4 or 5 paragraph 3 9 2 w FT flange tap B If using API 2565 2 DENST yz is replaced by API 2565 The type of densitometer in use may be changed by using Command Code 06m Refer to paragraph 3 7 1 3 9 6 ALARMS The computer uses the operator entries for DFS Density Full Scale Read Code 7 and DZ Density Zero R...

Страница 138: ...surement Standards Chapter 14 Section 3 Part 4 In the event of discrepancies the API document shall have precedence A Orifice Diameter d OD 1 PA TF PT where d Corrected orifice diameter inches at TF OD Measured orifice diameter inches at PT PA Plate coefficient of thermal expansion TF Measured fluid temperature degrees F PT Plate measurement temperature degrees F SECTION 3 126 ...

Страница 139: ...iameter inches at TF ID Measured pipe diameter inches at LT LA Pipe coefficient of thermal expansion TF Fluid temperature degrees F LT Pipe measurement temperature degrees F C Beta B d D where B the computed Beta ratio at TF d Corrected orifice diameter inches at TF D Corrected pipe diameter inches at TF SECTION 3 127 ...

Страница 140: ...p location 1 upstream 2 downstream n meter tube number PF Measured pressure PSIA HW Measured differential pressure InH2O E Expansion Factor for Compressible Fluids Y 1 0 41 0 35 B4 IE HW 27 707 P where Y Expansion factor per E above B Beta as computed in C above IE Isentropic exponent operator entered HW Measured differential pressure InH2O P Upstream static pressure per D above SECTION 3 128 ...

Страница 141: ...4 1 2 where EV Velocity of Approach Factor B Beta as computed in C above G Mass Flow Factor FM NC Pi 4 EV d 2 where FM the Mass Flow Factor NC 323 279 Reference Table 4 5 MPMS 14 3 4 Pi the Number Pi EV the Velocity of approach factor per F above d corrected orifice diameter per A above SECTION 3 129 ...

Страница 142: ...2300 A5 0 000511 S6 0 0116 A6 0 021 S7 0 5200 S8 0 1400 L1 L2 1 0 D where D is from step B above M2 2 L2 1 B where B is from step C above Tu S2 S3 e 8 5L1 S4 e 6 0L1 B4 1 B4 TD S6 M2 S7 M2 1 3 B1 1 Ts 0 0 if D A4 Ts A3 1 B A4 D if D A4 Cd0 A0 A1 B2 A2 B8 Tu TD Ts Cd1 A5 B0 7 250 0 7 Cd2 A6 B4 250 0 35 Cd3 S1 B4 B0 8 4 75 0 8 250 0 35 Cd4 S5 Tu S8 TD B0 8 4 75 0 8 SECTION 3 130 ...

Страница 143: ...in centipoise at TF DEN is the flowing density in pounds mass cubic foot J Iteration Flow Factor where d orifice diameter D pipe diameter Y expansion factor E velocity of approach factor HW pressure drop across orifice DEN flowing fluid density MU flowing fluid viscosity NIC 6 23582 X 10 4 Reference Table 4 5 MPMS 14 3 4 SECTION 3 131 ...

Страница 144: ...onstant Cd4 fifth orifice coefficient constant F1 iteration flow factor Constants Xc value of X where low Reynolds number switch occurs 1 142 139 337 256 165 Reynolds number of 3502 2 A B correlation constants for low Reynolds number factor A 4 343 524 261 523 267 B 3 764 387 693 320 165 1 Initialize Cd to value at infinite Reynolds number Cd Cd0 2 Calculate X the ratio of 4 000 to the assumed Rey...

Страница 145: ...f the correlation with respect to the assumed value of Cd Dc using the following formulae If X Xc then Fc Cd0 Cd1 X 0 35 Cd2 Cd3 X 0 8 X 0 35 Cd4 X 0 8 Dc 0 7 Cd1 X 0 35 0 35 Cd2 1 15 Cd3 X 0 8 X0 35 0 8 Cd4 X 0 8 Else Fc Cd0 Cd1 X 0 7 Cd2 Cd3 X 0 8 A B X Cd4 X 0 8 Dc 0 7 Cd1 X 0 7 Cd2 Cd3 X 0 8 B X 0 8 Cd3 A B X X 0 8 0 8Cd4 X 0 8 SECTION 3 133 ...

Страница 146: ... amount to change the guess for Cd δCd using the following formula Update the guess for Cd according to Cd Cd δCd 5 Repeat Steps 2 3 and 4 until the absolute value of δCd is less than 0 000005 6 If the value of X is greater than 1 0 then set Cd_f else clear Cd_f SECTION 3 134 ...

Страница 147: ...ficient from K above DEN density from API 2565 densitometer or operator entry Lbm FT3 HW measured differential pressure InH2O 3 10 1 STARTUP PROMPTING A Apply power to the instrument B Set the Enable Disable switch to Enable and confirm that the green Enabled lamp is illuminated C Simultaneously press CMD and CLR to initialize the instrument The subsequent display keying sequence is as follows SEC...

Страница 148: ...R DOZ Enter Zero Scale Density Output in LB CF 13 ENTER TK Enter Station Totalizing Factor 14 ENTER LF1 Enter Low Flow Cutoff for Line 1 InH20 15 ENTER LK1 Enter Totalizing Factor for Line 1 16 ENTER HF1 Enter Full Scale Measured Differential Pressure for Line 1 in Inches of Water 17 ENTER ID1 Enter Inside Diameter of Meter Tube for Line 1 in Inches 18 ENTER OD1 Enter Orifice Diameter of Meter Tub...

Страница 149: ...ked yearly or whenever there is reason to suspect power supply problems It should be checked adjusted after replacing a new or repaired PCB in your equipment 4 2 1 DETERMINE THE INSTRUMENT OPTIONS Compare the dash number located on the computer with the option diagram in Figure 2 1 to determine the option for which this Model 2234 Computer has been configured 4 2 2 REQUIRED TEST EQUIPMENT Bench ca...

Страница 150: ...ure the trimpot s for adjustment on the more recent version of the PC board Figure 4 2 are shown in parentheses _____________________________________________________________ 4 2 4 POWER SUPPLY ADJUSTMENTS A The input power requirement decal is located on the top of the power supply case at the rear of the instrument Verify that the proper potential is applied B Check all supply outputs for proper ...

Страница 151: ...MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 4 1 Original Version of PC Board No 1 DE 8992 series Figure 4 2 More Recent Version of PC Board No 1 DE 10421 series SECTION 4 139 ...

Страница 152: ... on PC Board No 1 DE 8992 On PC Board No 1 DE 10421 obtain a 1 000 V reading between TP3 and TP1 See Figure 4 3 for power supply voltage adjustment locations For test point locations refer to Figure 4 1 or Figure 4 2 E Adjust the potentiometer on the 5 V power supply to obtain a 5 14 V to 5 15 V reading between TP3 and Pin 24 of Eprom U5 on older PC Board No 1 DE 8992 series On PC Board No 1 DE 10...

Страница 153: ...ake a note of this total Enable the computer and enter the total into Read Code 18 full scale volume rate in LBHR B Attach a digital voltmeter to terminals 46 and 49 on the rear of the Model 2234 Adjust span trimpot R23 R4 on P C Board No 1 to a reading of 10 000 volts Enter 0 0 into Read Code 18 Adjust zero trimpot R24 R5 on PC Board No 1 to a reading of 0 00 volts Repeat steps A and B until the ...

Страница 154: ... PC Board No 1 until FIC is indicated The input zero and input scan adjustments interact with each other Therefore repeat procedures above until both readings are correct without further adjustments 4 3 3 RATE CURRENT CALIBRATION A Complete the Rate Voltage calibration outlined in paragraph 4 3 1 B Temporarily disconnect the wire going to terminal 37 located at the rear of the unit move the power ...

Страница 155: ...MODEL 2234 DIGITAL FLOW COMPUTER ___________________________ Figure 4 3 Power Supply Voltage Adjustment Locations SECTION 4 143 ...

Страница 156: ...__________________________ MODEL 2234 DIGITAL FLOW COMPUTER Figure 4 4 PC Board No 2 Adjustment Locations SECTION 4 144 ...

Страница 157: ... 000 mA See Figure 4 4 E Enter 0 0 into Read Code 18 zero scale volume in LBHR Adjust zero trimpot R54 on PC Board No 2 until the meter reads 4 000 mA F Repeat steps C D and E until the zero and span are correct without making further adjustments F Disable the computer and re connect the wire on terminal 37 if necessary SECTION 4 145 ...

Страница 158: ...between terminal 38 and common terminal 57 B Determine and note the density full scale output of Read Code 12 and density zero output of Read Code 13 C Set the measured density value of Read Code 0 to FXD and enter the full scale density value D Adjust span trimpot R33 on PC Board No 2 until the meter reads 20 0 mA See Figure 4 4 E Enter the zero value of the density output into Read Code 0 Adjust...

Страница 159: ...ed because printed circuit boards can be adversely affected by handling Therefore while the Model 2230 Series computer performs to specifications maintenance is not required 5 3 RECOMMENDED SPARE PARTS Daniel recommends only modular spare parts e g plug in boards sub assemblies etc Recommended spare parts for the Model 2230 Series computer are listed in the Spare Parts list in Appendix B To insure...

Страница 160: ... shipping container Be sure to include the dash number portion of the Model number This dash number found on the rear of the unit and on the back of the title page describes the exact power requirements and operating characteristics of the instrument 5 5 SHIPPING INSTRUCTIONS Pack the Model 2230 Series computer in its original packing materials if still available or in a carton or box with two or ...

Страница 161: ...000 PSIA 3 6 2 3 MU Fluid Viscosity Displays Fixed or Variable Viscosity Number 0 0 3 10 4 IE Isentropic Exponent Displays Isentropic Exponent Number FXD 0 0 3 10 5 TFS Temperature Transducer Full Scale Displays Temperature Transducer Full Scale value in degrees Fahrenheit FXD only 3 6 1 6 TZ Temperature Transducer Zero Scale Displays Temperature Transducer Zero Scale value in degrees Fahrenheit F...

Страница 162: ...cer Zero Scale Displays Static Pressure Transducer at Zero Scale in PSIA FXD only 3 6 1 11 MFS Mass Rate Full Scale Displays Mass Rate at Full Scale in LBHR FXD only Any positive real number 3 6 3 12 DOF Analog Density Output Full Scale Displays Analog Density Output Full Scale in LBF3 FXD only Any positive real number 3 6 5 13 DZ Analog Density Output Zero Scale Displays Analog Density Output at ...

Страница 163: ... 42 43 Frequency Densitometer Option 29 TC Densitometer Temperature Coefficient Displays Densitometer Temperature Coefficient FXD only Any real number 3 9 3 30 A0 Densitometer Scaling Constant Displays Scaling Constant FXD only Any real number 3 9 3 31 A1 Densitometer Scaling Constant Displays Scaling Constant FXD only Any real number 3 9 3 32 A2 Densitometer Scaling Constant Displays Scaling Cons...

Страница 164: ...plays Densitometer Pressure Coefficient FXD only Any real number 3 9 3 37 DCF Densitometer Correction Factor Displays Densitometer Correction Factor FXD only Any positive real number 3 9 3 38 41 Not Used 42 A4 Densitometer Pressure Coefficient Displays Densitometer Pressure Coefficient FXD only Any real number 3 9 3 43 A5 Densitometer Pressure Coefficient Displays Densitometer Pressure Coefficient...

Страница 165: ...02 to 99 3 8 2 45 DTE Day of Year Displays Day of the Year FXD only 001 to 366 3 8 3 46 TIM Hours Minutes Displays Time in Hours and Minutes FXD only 00 00 to 23 59 3 8 4 47 DPT Daily Print Time Displays Time Daily Printout to start FXD only 00 to 23 3 8 5 48 INT Print Interval Displays Time Interval between printings FXD only 00 to 24 3 8 6 49 ID Identification Displays Identification Number FXD ...

Страница 166: ...ion 01 FXD only Read Code Blank Line Not Used 3 8 9 52 P02 Print Location 02 Displays data stored in Print Location 02 FXD only Read Code Blank Line Not Used 3 8 9 53 P03 Print Location 03 Displays data stored in Print Location 03 FXD only Read Code Blank Line Not Used 3 8 9 thru 82 P32 Print Location 32 Displays data stored in Print Location 32 FXD only Read Code Blank line Not Used 3 8 9 APPENDI...

Страница 167: ... FXD only 9 to 9 3 6 5 23n HFn Line Differential Pressure Full Scale Displays Full Scale Differential Pressure in inches of water for a selected line n FXD only Real number greater than 0 0 3 6 1 24n IDn Line Inside Diameter Displays Inside Diameter for a selected line n in inches FXD only Typically 1 0 to 50 0 inches 3 6 3 25n ODn Line Orifice Diameter Displays Orifice Diameter for a selected lin...

Страница 168: ...0 29n Yn Line Expansion Factor Displays Expansion Factor for a selected line n VAR or FXD Typically 0 87 to 1 04 typical 0 0 3 6 4 30n TLn Line Tap Location Displays Tap Location for a selected line n FXD only 1 upstream 2 down stream 3 6 3 31n FMn Line n Mass Flow Factor Line n Mass Flow Factor VAR or FXD Typically 0 0 3 10 32n PAn Live n Plate Alpha Displays Line n Plate Alpha None 3 10 33n PTn ...

Страница 169: ...Factor 0 0 3 10 37n Pn Line n Upstream Pressure Displays Line n Upstream Pressure 0 0 3 10 800 RATE LT Station Total Mass Rate Displays Station Total Mass Rate VAR only 3 6 4 80n RATE Ln Mass Flow Rate Displays Mass Flow Rate through the station or selected line n VAR only 3 6 4 81n thru 89n not used 900 TOTAL LT Station Total Mass Displays Station Total Mass VAR only 3 6 4 90n TOTAL Ln Mass Total...

Страница 170: ...__________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank APPENDIX A 158 ...

Страница 171: ...ODEL 2234 DIGITAL FLOW COMPUTER ___________________________ DRAWINGS AND PARTS LIST Spare Parts List SP 8969 4 Field Wiring Diagram DE 9144 Lightning Protection DE 8940 Dimensions CE 9117 APPENDIX B 159 ...

Страница 172: ...__________________________ MODEL 2234 DIGITAL FLOW COMPUTER This page intentionally left blank APPENDIX B 160 ...

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Страница 181: ...duct shipped for return and assumes the risk of loss of the product during shipment 3 To obtain Warranty service or to locate the nearest Daniel office sales or service center call 713 467 6000 Fax 281 897 2901 or contact Daniel Industries Inc Electronics P O Box 55435 Houston Texas 77255 When contacting Daniel for product service the purchaser is asked to provide information as indicated on the f...

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Страница 183: ...___________________ EQUIPMENT MODEL ____________________ S N __________________FAILURE DATE _____________ DESCRIPTION OF PROBLEM __________________________________________________________________ ______________________________________________________________________________________________ ______________________________________________________________________________________________ WHAT WAS HAPPE...

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Страница 186: ...3 467 6000 for the location of the sales or service office nearest you Electronics offers both on call and contract maintenance service designed to provide single source responsibility for all Electronics Products Daniel Industries Inc reserves the right to make changes to any of its products or services at any time without prior notification in order to improve that product or service and to supp...

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