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FC Flow Computer

100

7.4 Computation of the DP Factor

It is assumed that the user has the printout from a standardized sizing program for the

particular device he will be using. Such standardized printouts list all the necessary

information which the user will then be prompted for by the instrument or diskette.

It is also important that the user select the flow equation to be used and either select or

enter the following items:

Flowmeter Type

The fluid type or the fluid properties applicable to the fluid to be measured

Beta, Meter Exp. Coeff., Inlet Pipe Bore

Reference Conditions of temperature, pressure, Z and calibration temperature

The user is prompted for the following:

mass flow or volume flow or corrected volume flow as indicated by the flow equation

Differential Pressure

Inlet Pressure

Temperature

Density

Isentropic Exponent

The unit then computes the following results corresponding to the user entry conditions and

appropriate methods:

Finally the DP Factor is computed as follows:

Steam Case

mass flow • [1 - Meter Exp.Coeff. • ( Tf - T

cal

)]

DP Factor =

Y • [ 2 • delta P • density]

1/2

Liquid Case

volume • [1 - Meter Exp.Coeff. • ( Tf - T

cal

)]

DP Factor =

2 • delta P

1/2

density

Gas Case

Std.Vol.Flow • ref density • [1 - Meter Exp.Coeff. • ( Tf - T

cal

)]

DP Factor =

Y • [ 2 • delta P • density]

1/2

Application Hint:

The user may reenter this DP Factor multiple times to assist him in assembling the table

points of DP Factor and Reynold's Number necessary to construct a 16 point table for the

meter run.

NOTE: Meter Exp.Coef is (x10

-6

)

[

]

Содержание FC

Страница 1: ...Model FC Mass Flow Computer 990272 Rev A 05 04 12 Model FC Mass Flow Computer Installation Operation Manual ...

Страница 2: ......

Страница 3: ...put 26 4 3 Wiring In Hazardous Areas 29 4 3 1 Flow Input 27 4 3 2 Pressure Input 27 4 3 3 Temperature Input 27 5 UNIT OPERATION 5 1 Front Panel Operation Concept for Operate Mode 28 5 2 General Operation 29 5 3 Password Protection 29 5 4 Relay Operation 29 5 5 Pulse Output 29 5 6 Analog Outputs 29 5 7 Function Keys Display Grouping 29 5 8 RS 232 Serial Port Operation 30 5 8 1 PC Communications 30 ...

Страница 4: ...Operation of Serial Communication Port with Printers 101 8 4 FC RS 232 Port Pinout 101 9 RS 485 SERIAL PORT 9 1 RS 485 Serial Port Description 102 9 2 General 102 9 3 Operation of Serial Communication Port with PC 102 9 4 FC RS 485 Port Pinout 102 10 FLOW COMPUTER SETUP SOFTWARE 10 1 System Requirements 103 10 2 Cable and Wiring Requirements 103 10 3 Installation for Windows 3 1 or 3 11 103 10 4 U...

Страница 5: ...urpose or is used incorrectly Please note operating instructions provided in this manual The instrument must be installed operated and maintained by personnel who have been properly trained Personnel must read and understand this manual prior to installation and operation of the instrument The manufacturer assumes no liability for damage caused by incorrect use of the instrument or for modificatio...

Страница 6: ...ature where the user is guided through a minimum number of steps to rapidly configure the instrument for the intended use The EZ setup prepares a series of questions based on flow equation fluid and flowmeter type desired in the application 1 1 Unit Description The FC Flow Computer satisfies the instrument requirements for a variety of flowmeter types in liquid gas steam and heat applications Mult...

Страница 7: ...VDC 1 5 VDC Current 4 20 mA 0 20 mA Basic Measurement Resolution 16 bit Update Rate 2 updates sec minimum Accuracy 0 02 FS Automatic Fault detection Signal over under range Current Loop Broken Calibration Operator assisted learn mode Learns Zero and Full Scale of each range Fault Protection Fast Transient 1000 V Protection capacitive clamp Reverse Polarity No ill effects Over Voltage Limit 50 VDC ...

Страница 8: ...Peak demand and demand last hour optional Number of Outputs 2 Type Isolated Current Sourcing shared common Isolated I P C 500 V Available Ranges 0 20 mA 4 20 mA menu selectable Resolution 16 bit Accuracy 0 05 FS at 20 Degrees C Update Rate 5 updates sec Temperature Drift Less than 200 ppm C Maximum Load 1000 ohms Compliance Effect Less than 05 Span 60 Hz rejection 40 dB minimum EMI No effect at 10...

Страница 9: ...ists minimizing the number of questions asked of the user In the setup menu the flow computer activates the correct setup variables based on the instrument configuration the flow equation and the hardware selections made for the compensation transmitter type the flow transmitter type and meter enhancements linearization options selected All required setup parameters are enabled All setup parameter...

Страница 10: ...in the PRINT INITIATE menu The choices are PRINT KEY INTERVAL and TIME OF DAY The user can select the datalog store interval in a HH MM format in the PRINT INTERVAL menu The user can also select the store time of day in a 24 hr HH MM format in the PRINT TIME menu The user can also define whether he just wants the data stored into the datalogger or if he wants the data both stored in the datalogger...

Страница 11: ... is first set equal to MODEM Each FC on a shared modem cable is given a unique serial device address or DEVICE ID The BAUD RATE is commonly set to 2400 the PARITY set to NONE and the HANSHAKING set to NONE to complete the basic setup The remote PC s communication settings are chosen to match these The level of complexity of the Supetrol 2 to Modem connection can range from simple to more complex I...

Страница 12: ...n place d Tighten the screws firmly to attach the bezel to the panel 3 in lb of torque must be applied and the bezel must be parallel to the panel NOTE To seal to NEMA4X IP65 specifications supplied bezel kit must be used and panel cannot flex more than 010 When the optional bezel kit is used the bezel adaptor must be sealed to the case using an RTV type sealer to maintain NEMA4X IP65 rating Gener...

Страница 13: ...ckouts 5 places 1 06 27 9 4 238 7 3 184 2 34 59 5 8 4 213 4 4 13 105 2 33 59 0 385 9 8 Security Tag Provisions 0 625 ø 0 75 ø 5 places 1 10 28 1 10 28 1 10 28 1 10 28 1 10 28 1 10 28 Wall Mount mounting option W 2 2 Mounting Diagrams continued NEMA4 Wall Mount mounting option N ...

Страница 14: ...7 1 5 1 31 33 3 8 88 225 5 3 5 88 9 10 19 258 8 2 5 63 5 2 5 63 5 5 09 129 3 0 76 2 1 4 20UNC 2B TAP x 5 16 DEEP 6 HOLES CENTERED ON THREE SIDES FOR MOUNTING 1 2 14 NPT PLUGS 2 PLACES 10 6 269 2 1 4 20UNC 2B TAP x 5 16 DEEP 6 HOLES CENTERED ON THREE SIDES FOR MOUNTING 3 5 88 9 3 76 2 2 13 54 1 75 44 5 5 1 129 5 25 6 35 5 12 7 4 63 117 5 10 19 258 8 3 13 79 4 3 13 79 4 3 76 2 5 12 7 ...

Страница 15: ...Saturated Steam Flow temperature or pressure Output Results Display Results Mass or Volume Flow Rate Resettable Total Non Resettable Total Temperature Pressure Density optional peak demand demand last hour time date stamp Analog Output Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Mass or Volume Total Relay Outputs Mass or Volume Flow Rate Total Pr...

Страница 16: ...e Output Results Display Results Heat Mass or Volume Flow Rate Resettable Total Non Resettable Total Temperature Pressure Density optional peak demand demand last hour time date stamp Analog Output Heat Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Heat Mass or Volume Total Relay Outputs Heat Mass or Volume Flow Rate Total Pressure Temperature Alar...

Страница 17: ...Saturated Steam Flow temperature or pressure Output Results Display Results Heat Mass or Volume Flow Rate Resettable Total Non Resettable Total Temperature Pressure Density optional peak demand demand last hour time date stamp Analog Output Heat Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Heat Mass or Volume Total Relay Outputs Heat Mass or Volum...

Страница 18: ...e Output Results Display Results Heat Mass or Volume Flow Rate Resettable Total Non Resettable Total Temperature Pressure Density optional peak demand demand last hour time date stamp Analog Output Heat Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Heat Mass or Volume Total Relay Outputs Heat Mass or Volume Flow Rate Total Pressure Temperature Alar...

Страница 19: ...tput Corrected Volume or Actual Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Corrected Volume or Actual Volume Total Relay Outputs Corrected Volume or Actual Volume Flow Rate Total pressure Temperature Alarms Peak Demand Demand Last Hour Applications Monitoring corrected volume flow and total of any gas Flow alarms are provided via relays and datalogging ...

Страница 20: ...s calculated from the differential pressure taking into account temperature and pressure compensation Output Results Display Results Mass or Volume Flow Rate Resettable Total Non Resettable Total Temperature Pressure Density optional peak demand demand last hour time date stamp Analog Output Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Mass or Vol...

Страница 21: ...al pressure taking into account temperature and pressure compensation Output Results Display Results Heat Mass or Volume Flow Rate Resettable Total Non Resettable Total Temperature Pressure Density optional peak demand demand last hour time date stamp Analog Output Heat Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Heat Mass or Volume Total Relay O...

Страница 22: ...me date stamp Analog Output Corrected Volume and Actual Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Corrected Volume and Actual Volume Total Relay Outputs Corrected Volume and Actual Volume Flow Rate Total Pressure Temperature Alarms Peak Demand Demand Last Hour Applications Monitoring corrected volume flow and total of any liquid Flow alarms are provide...

Страница 23: ...tional peak demand demand last hour time date stamp Analog Output Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Mass or Volume Total Relay Outputs Mass or Volume Flow Rate Total Temperature Pressure Density Alarms Peak Demand Demand Last Hour Applications Monitoring mass flow and total of any liquid Flow alarms are provided via relays and dataloggi...

Страница 24: ... peak demand demand last hour time date stamp Analog Output Combustion Heat Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Combustion Heat Mass or Volume Total Relay Outputs Combustion Heat Mass or Volume Flow Rate Total Temperature Pressure Alarms Peak Demand Demand Last Hour Applications Calculate the energy released by combustion of liquid fuels ...

Страница 25: ... demand demand last hour time date stamp Analog Output Sensible Heat Mass or Volume Flow Rate Temperature Pressure Density Peak Demand Demand Last Hour Pulse Output Sensible Heat Mass or Volume Total Relay Outputs Sensible Heat Mass or Volume Flow Rate Total Temperature Pressure Alarms Peak Demand Demand Last Hour Applications Calculate the energy stored in a condensate with respect to water at 32...

Страница 26: ... Last Hour Pulse Output Heat Mass or Volume Total Relay Outputs Heat Mass or Volume Flow Rate Total Temperature Alarms Peak Demand Demand Last Hour Applications Calculate the energy which is extracted by a heat exchanger from heat carrying liquids LIQUID DELTA HEAT Liquid Delta Heat Illustration Water Heat Volume Flow ρ T1 h T2 h T1 Other heat carrying liquids Heat C volume flow 1 α T1 Tref 2 ρref...

Страница 27: ...and demand last hour time date stamp Analog Output Net Heat Flow Mass and Volume Flow Rate Condensate Temperature Steam Pressure Condensate Density Peak Demand Demand Last Hour Pulse Output Net Heat Mass or Volume Total Relay Outputs Net Heat Mass or Volume Flow Rate Total Condensate Temperature Steam Pressure Alarms Peak Demand Demand Last Hour Applications Calculate the energy stored in steam th...

Страница 28: ...NO 14 15 16 17 NO POWER IN DC DC PULSE IN DC OUTPUT COMMON RTD EXCIT RTD SENS RTD SENS 8 9 10 11 12 2 3 4 5 6 7 1 TEMPERATURE Iin Vin Iin IN IN FLOW RTD EXCIT RTD SENS RTD SENS DC OUTPUT PRESSURE TEMP 2 Iin IN ANALOG OUTPUT 1 13 PULSE OUTPUT PULSE OUTPUT ANALOG OUTPUT COMMON ANALOG OUTPUT 2 RLY1 AC LINE AC LINE 24 18 COM 19 20 21 22 23 14 15 16 17 N O POWER IN DC DC PULSE IN DC OUTPUT COMMON RTD E...

Страница 29: ...er with F V Converter 10 mV or 100 mV Signal i e Turbine Flowmeter with Magnetic Pickup 3 30 VDC Pulses i e Positive Displacement Flowmeter 0 5 VDC 4 20 mA 1 2 3 4 1 2 3 4 1 2 3 24 V Out 4 20 mA In V In Common Pulse In Common 24 V Out Pulse In Common 1 2 3 4 High Range DP Transmitter 4 20 mA Low Range DP Transmitter 4 20 mA 24 V Out 4 20 mA In DP Hi Range 4 20 mA In DP Lo Range 1 2 3 4 2 3 Pressur...

Страница 30: ...FC Flow Computer 26 4 2 4 Temperature Input 4 2 5 Temperature 2 Input Or optional steam trap monitoring input in some saturated steam applications ...

Страница 31: ... Out Common RTD Excit RTD Sens RTD Sens 3 Wire RTD MTL4755ac Hazardous Area Safe Area 4 3 2 Pressure Input 4 3 Wiring In Hazardous Areas Hazardous Area Safe Area DP Transmitter 24V Out 4 20mA In Common 4 3 1 Flow Input Examples using MTL787S Barrier MTL4755ac for RTD 4 20mA Pressure Trans mitter Common 24V Out 4 20mA In ...

Страница 32: ... press the desired Alarm setpoint key once Rapidly press the alarm setpoint keys several times for direct editing of the alarm setpoints The operator will be prompted to enter password if the unit is locked Press CLEAR ENTER to enter value SCROLL Press the Scroll key to activate the scrolling display list See section 6 to setup the display list PRINT The PRINT key is used to print on demand when t...

Страница 33: ...ow high alarms latch or unlatch or as relay pulse outputs ALARM SETPOINT 1 RLY1 and ALARM SETPOINT 2 RLY2 are easily accessible by pressing the ALARM 1 or ALARM 2 key on the front panel 5 5 Pulse Output The isolated pulse output is menu assignable to any of the available totals The pulse output duration and scaling can be set by the user The pulse output is ideal for connecting to remote totalizer...

Страница 34: ...he current instrument configuration The audit trail information and a status report is also printed This report is initiated in the Service and Analysis Group see section 6 15 SERVICE ANALYSIS Print System Setup 5 8 3 Operation of RS 232 Serial Port with Modems In this mode of operation the RS232 port is assumed to be connected to a MPP2400N or similar telephone modem The FC is responsible for com...

Страница 35: ...OW KEYS Use the UP and DOWN arrow keys to navigate through the submenu groups The up and down arrow keys are also used to view the next previous selection in a selection list within a submenu cell When entering text characters the UP and DOWN arrow keys are used to scroll through the available character sets for each individual character location Press the ENTER key to accept the character and adv...

Страница 36: ...ult value without prompting the user This may cause any previously programmed information to be lost or reset Selection YES NO Display EZ SETUP YES PAUSE COMPUTATIONS Note The Pause Computations warning message informs the user that all computations are halted while programming EZ Setup Select the desired units of measure Selection METRIC ENGLISH Display ENGLISH UNITS Select the flow equation appr...

Страница 37: ...n 4 20 mA 0 20 mA 0 5 Vdc 1 5 Vdc 0 10 Vdc DIGITAL 10 mV LEVEL DIGITAL 100 mV LEVEL DIGITAL 2 5 V LEVEL 4 20mA STACKED 0 20mA STACKED 4 20mA LINEAR MANIFOLD 0 20mA LINEAR MANIFOLD Display DIGITAL 2 5 V LEVEL INPUT SIGNAL Enter the K Factor for the flowmeter Input Number with floating decimal point 0 0001 999999 Display 123 67 P ft3 K FACTOR Select the appropriate pressure input signal Selection MA...

Страница 38: ...display automatically returns to the HOME position The EZ Setup routine is completed and the flow computations are resumed EZ SETUP FULL SCALE VALUE PRESSURE DEFAULT VALUE PRESSURE 6 2 EZ SETUP Continued 6 3 DETAILED MENU DESCRIPTION DETAILED MENU DESCRIPTION The menu organization for the unit is depicted in Appendix B The first depiction is that available with the operator password The second is ...

Страница 39: ...out informing the user This may cause any previously programmed information to be lost or reset Selection YES NO Display EZ SETUP NO PAUSE COMPUTATIONS Note The Pause Computations warning message informs the user that all computations are halted while programming EZ Setup This is the menu location where the operator can unlock the unit by entering the correct password operator or supervisor code o...

Страница 40: ...TA HEAT LIQUID SENSIBLE HEAT LIQ COMBUSTION HEAT LIQUID MASS LIQ CORRECTED VOLUME STM CONDENSATE HEAT Display STEAM MASS FLOW EQUATIONS Enter the date in this format Day Month Year Note After prolonged breaks in the power supply several days or upon initial start up of the unit the date and time must be reset This does not apply to units with the datalogger or language option Input Flashing select...

Страница 41: ...is format Hours Minutes Note After prolonged breaks in the power supply several days or upon initial start up of the unit the date and time must be reset Input Flashing selections can be changed Store and Confirm entries with the ENTER key Display 13 24 ENTER TIME A personal code may be defined This code is used to enable program editing Note The private code is factory set to 1000 Entering a priv...

Страница 42: ... ad ditional functions Change the Service Code Change the Order Code Change the Serial No Clear Grand Total Clear Errors in Error Log View Perform calibra tion in Service Analysis Menu Restore Factory Calibra tion Information in Service Analysis Menu Set Next Calibration Date Print Maint Report Perform Service Test A personal enginerring code may be defined This code is used to enable program menu...

Страница 43: ...Confirm entries with the ENTER key Display FCV10P ORDER CODE The serial number of the unit is assigned at the factory Note Maximum of 10 characters Input Alphanumeric characters for each of 10 positions 1 9 A Z Display SN 12345 SERIAL NUMBER ORDER CODE SERIAL NUMBER SYSTEM PARAMETERS 6 4 SYSTEM PARAMETERS Continued SERIAL NO SENS The serial number or tag number of the flowmeter can be entered Note...

Страница 44: ...ssages will be displayed periodically alternating throughout the scroll list Selection with Prompt CHANGE YES NO ADD TO LIST L1 L2 NO Variable Selection HEAT FLOW MASS FLOW VOLUME FLOW STD VOLUME FLOW TEMP 1 TEMP 2 DELTA T PRESSURE DENSITY SPEC ENTHALPY TIME DATE HEAT TOTAL HEAT GRAND TOTAL MASS TOTAL MASS GRAND TOTAL STD VOLUME TOTAL STD V GRAND TOTAL VOLUME TOTAL VOL GRAND TOTAL PEAK DEMAND DEMA...

Страница 45: ...nter the number of decimal places for numerical values Note The number of decimal places applies to all displayed variables and totalizers The number of decimal places is automatically reduced if there is insufficient space available on the display for large numbers The number of decimal places set here does not affect the functions set in the programming setup Selection 0 1 2 3 or 4 decimal place...

Страница 46: ...rgy combustion heat Note The unit selected here also applies to the following Zero and full scale value for current Relay setpoints Selection kBtu time base kW MJ time base kCal time base MW tons GJ h Mcal h Gcal h Mbtu h Gbtu h Display kBtu h HEAT FLOW UNIT Select the unit of heat for the particular totalizer Note The unit selected here also applies to the following Pulse value for pulse output R...

Страница 47: ...time base g time base t time base tons US time base tons long time base Display lbs h MASS FLOW UNIT Select the unit of mass for the particular totalizer Note The unit selected here also applies to the following Pulse value for pulse output Relay setpoints Selection lbs kg g t tons US tons long hlbs Klbs Mlbs Display lbs MASS TOTAL UNIT SYSTEM UNITS 6 6 SYSTEM UNITS Continued MASS FLOW UNIT MASS T...

Страница 48: ...ime base scf time base Nm3 time base NI time base igal time base mcf time base All units listed above apply to corrected volume Display scf h COR VOL FLOW UNIT Select the unit of volume for the particular totalizer Note The unit selected here also applies to the following Pulse value for pulse output Relay setpoints Corrected Volume volume measured under operating conditions converted to volume un...

Страница 49: ...e All units listed above apply to the actual volume measured under operating conditions Display ft3 h VOLUME FLOW UNIT Select the unit for uncorrected volume totalizer Note The unit selected here also applies to the following Pulse value for pulse output Relay setpoints Selection The available selections will change depending on the flow equation selected bbl gal l hl dm3 ft3 m3 acf igal All units...

Страница 50: ...5 gal bblfor liquids normal cases US 42 0 gal bblfor oil petrochemicals US 55 0 gal bblfor filling tanks imp 36 0 gal bbl for beer brewing imp 42 0 gal bbl for oil petrochemicals Display US 31 0 gal bbl DEFINITION bbl Select the unit for the fluid temperature Note The unit selected here also applies to the following Zero and full scale value for current Relay setpoints Reference conditions Specifi...

Страница 51: ...2g Definitions bara bar kpaa kpa Absolute pressure kc2a kg cm2 a for absolute psia psi barg bar Gauge pressure compared to kpag kpa atmospheric pressure kc2g kg cm2 g for gauge psig psi Gauge pressure differs from absolute pressure by the atmospheric pressure which can be set in the submenu group OTHER INPUT Display psia PRESSURE UNIT Select the unit for the density of the fluid Note The unit sele...

Страница 52: ...ec enthalpy Note The unit selected here also applies to the following Specific thermal capacity kWh kg kWh kg C Selection btu kWh kg MJ kg kCal kg lbs 0 4536 kg Display Btu SPEC ENTHALPY UNIT Select the unit for measurements of length Selection in mm Display in LENGTH UNIT SPEC ENTHALPY UNIT LENGTH UNIT ...

Страница 53: ...y this sets all of the preset values Re select the submenu group FLUID TYPE now choose GENERIC and ENTER Now the preset values for the previously selected fluid can be altered 3 Generic Fluid Select the setting GENERIC for the Fluid type submenu The characteristics of any fluid can now be defined by the user Selection GENERIC WATER SATURATED STEAM SUPERHEATED STEAM DRY AIR HUMID AIR HUMID GAS NATU...

Страница 54: ...ference temperatures as follows T0 midrange temperature T1 choose a second point at or near the maximum process temperature 106 The value entered is internally multiplied by a factor of 10 6 display e 6 temp unit since the value to be entered is very small Display 104 300 e 6 oF THERM EXP COEF Enter the specific combustion heat for generic fuels Input Number with floating decimal point 0 000 10000...

Страница 55: ...reference conditions Note The Z factor is used for all gas equations Define the standard conditions in the submenu STP REFERENCE OTHER INPUT submenu group Input Number with fixed decimal point 0 1000 10 0000 Display 1 000 REF Z FACTOR Enter the isentropic exponent of the fluid The isentropic exponent describes the behavior of the fluid when measuring the flow with a square law flowmeter The isentr...

Страница 56: ...e NX 19 computation Note Select NATURAL GAS NX 19 in FLUID TYPE to activate this function Input Number with fixed decimal point 0 00 15 00 Display 0 00 MOLE CO2 Enter the Viscosity coefficient A for the anticipated fluid This information is needed by the viscosity computation for UVC and for Reynolds Number calculations Note Select SQUARE LAW 16PT or LINEAR UVC in FLOWMETER TYPE to activate this f...

Страница 57: ...e factory Alternately if your intended fluid is not listed the Viscosity Coef A and B can be derived from two known temperature viscosity pairs Begin by obtaining this information for you intended fluid Convert these known points to units of Degrees F and centipoise cP The information is now in a suitable form to compute the Viscosity Coef A and Viscosity Coef B using the following equation based ...

Страница 58: ...l bypass diverter value It may be used with turbine PD Mag Vortex flowmeters equipped with analog outputs to extend the allowable turndown range GILFLO Gilflo flowmeters are special purpose differential pressure type flowmeters with an analog output where the differential pressure is linear with flow GILFLO 16PT Gilflo 16 PT flowmeters are special purpose differential pressure type flowmeters with...

Страница 59: ...Select the size of the Accelabar flowmeter Selection DN50 DN80 DN150 DN200 Select the type of measuring signal produced by the flowmeter Selection DIGITAL 10 mV LEVEL Voltage pulses 10mV trigger threshold DIGITAL 100 mV LEVEL Voltage pulses 100mV trigger threshold DIGITAL 2 5 V LEVEL Voltage pulses 2 5V trigger threshold 4 20 mA 4 20 mA current signal 0 20 mA 0 20 mA current signal 4 20 mA STACKED...

Страница 60: ...he flowmeter Note For flowmeters with analog linear output Target generic square law and Gilflo flowmeters the flow computer uses the selected system units for volumetric flowrate The units for differential pressure flowmeters are dependent on the system units selected for pressure Imperial units inches H2O Metric units mbar Input Number with floating decimal point 0 000 999999 Display 10000 00 ft...

Страница 61: ...sing the hi range delta P pressure transmitter signal Input Number with floating decimal point 0 000 999999 Display 0 000 in H2O SWITCH UP DP Enter the value of delta P at which the unit will begin using the lo range delta P pressure transmitter signal Input Number with floating decimal point 0 000 999999 Display 0 000 in H2O SWITCH UP DP Enter the low flow cutoff This is used as a switchpoint for...

Страница 62: ...ation density This is the fluid density upon which the flowmeter s calibration is based Input Number with floating decimal point in requested units 0 000 10 000 Display 8 3372 gal CAL DENSITY Enter the K Factor of the flowmeter Note The K Factor is expressed in pulses per unit volume as defined by total units Input Number with floating decimal point 0 001 999999 Display 000 ft3 h LOW FLOW CUTOFF E...

Страница 63: ... flow computer to 70 F 21 C Some manufacturers use a graph or a formula to show the influence of temperature on the calibration of the flowmeter In this case use the following equation to calculate the meter expansion coefficient KME Meter expansion coefficient Q T Volumetric flow at temperature T resp TCAL T Average process temperature TCAL Calibration temperature Note This correction should be s...

Страница 64: ...low Liquid volume flow Gas corrected volume flow M Mass flow Q Volumetric flow QREF Corrected volumetric flow KDP DP Factor ε1 Gas expansion factor Y1 T Operating temperature TCAL Calibration temperature p Differential pressure ρ Density at flowing conditions KME Meter expansion coefficient x 10 6 ρREF Reference density DP FACTOR 6 8 FLOW INPUT Continued FLOW INPUT 2 p ρ 1 KME T TCAL KDP ε1 M 2 p ...

Страница 65: ...D DATA 3 Beta see FLOW INPUT 4 Meter expansion coef ref see FLOW INPUT 5 STP Ref temperature pressure see OTHER INPUT 7 Inlet Pipe Bore see FLOW INPUT 8 Calibration Temp see OTHER INPUT only for gas flow equations Entries CHANGE FACTOR NO CHANGE FACTOR YES If YES the flow computer will prompt you further COMPUTE FACTOR NO COMPUTE FACTOR YES If NO Enter DP FACTOR If YES You will be prompted for the...

Страница 66: ...get Case Y1 ε1 1 0 ε1 Gas expansion factor β BETA geometric ratio p Differential pressure κ Isentropic exponent p1 Inlet pressure absolute DP FACTOR Continued p 27 7 p1 R 1 κ 1 1 β4 κ R 2 κ 1 R κ 1 κ 1 β 4 R 1 R 2 κ ε1 NOTE 27 7 is a units conversion constant from the absolute inlet pressure units to the differential pressure units 27 7 is for psia to H2O use other units conversions as required p ...

Страница 67: ...r M Mass flow Q Volumetric flow QREF Corrected volumetric flow ε1 Gas expansion factor T Operating temperature TCAL Calibration temperature p Differential pressure ρ Density at flowing conditions ρREF Reference density Note The computation accuracy can be enhanced by entering up to 16 values for Reynold s Number DP Factor in a linearization table see LINEARIZATION Each DP Factor can be calculated ...

Страница 68: ...pair of values Pairs are entered in ascending order by Hz cstks Linear flowmeters with analog output excluding Gilflo ILVA The linearization table enables up to 16 different flowrate correction factor pairs The flowrate and corresponding correction factor are prompted for each pair of values The correction factor Cf is determined as follows Cf actual flowrate displayed flowrate Linear squared DP t...

Страница 69: ...or Input Max 6 digit number 0 001 1 0 Display 1 000000 BYPASS YM FACTOR 6 8 FLOW INPUT Continued FLOW INPUT VIEW INPUT SIGNAL This feature is used to see the present value of the flow input signal The type of electrical signal is determined by the flowmeter input signal type selection Display 150 Hz VIEW INPUT SIGNAL BYPASS CAL FACTOR BYPASS EAm FACTOR BYPASS DC FACTOR BYPASS Ym FACTOR FLOWMETER L...

Страница 70: ...eam is measured with only a pressure sensor INPUT 1 NOT USED must be selected If only a temperature sensor is used INPUT 2 NOT USED must be selected Selection Input 1 Temperature INPUT 1 NOT USED RTD TEMPERATURE 4 20 TEMPERATURE 0 20 TEMPERATURE MANUAL TEMPERATURE 4 20 mA TRAP STATUS Input 2 Process pressure Temperature 2 Density INPUT 2 NOT USED 4 20 PRESSURE G 0 20 PRESSURE G MANUAL PRESSURE 4 2...

Страница 71: ...lay 752 00 of FULL SCALE VALUE A fixed value can be defined for the assigned variable pressure temperature density The flow computer will use this value in the following cases In case of error i e defective sensors The flow computer will continue to operate using the value entered here if MANUAL TEMPERATURE MANUAL PRESSURE or MANUAL DENSITY was selected for INPUT SIGNAL Input Number with fixed dec...

Страница 72: ...OMETRIC PRESS CALIBRATION TEMP This feature is used to see the present value of the compensation input signal The type of electrical signal is determined by the compensation input signal type selection Display 20 mA VIEW INPUT SIGNAL VIEW INPUT SIGNAL Enter the TRAP ERROR DELAY cold trap error in HH MM format An alarm will only be activated if the trap is detected as continuously being in the abno...

Страница 73: ...E OUTPUT PULSE OUTPUT Assign the pulse output to a measured or calculated totalizer value Selection HEAT TOTAL MASS TOTAL CORRECTED VOL TOTAL ACTUAL VOLUME TOTAL Display ACTUAL VOLUME TOTAL ASSIGN PULSE OUTPUT ASSIGN PULSE OUT PUT ...

Страница 74: ... power supply required POSITIVE Rest value at 0V active high NEGATIVE Rest value at 24V active low or external power supply Active Passive Positive Pulse Negative Pulse Selection PASSIVE NEGATIVE PASSIVE POSITIVE ACTIVE NEGATIVE ACTIVE POSITIVE Display PASSIVE POSITIVE PULSE TYPE 24V 12345678 13 12 Push Pull Internal Power Supply 12345678 13 12 Open Collector 24V External Power Supply 24 0 t 24 0 ...

Страница 75: ...devices The pulse width limits the max possible output frequency of the pulse output For a certain output frequency the max permissible pulse width can be calculated as follows Pulse width 1 2 max output frequency Hz Input Number with floating decimal point 0 01 9 999 s seconds Display 01 s PULSE WIDTH Frequency signals can be simulated in order to check any instrument that is connected to the pul...

Страница 76: ...RENT OUT Define the 0 or 4 mA low scale current value The current for the scaled full scale value is always 20 mA Selection 0 20 mA 4 20 mA NOT USED Display 4 20 mA CURRENT RANGE Set the low scale value to the 0 or 4 mA current signal for the variable assigned to the current output Input Number with floating decimal point 999999 999999 Display 000 ft3 h LOW SCALE VALUE Set the full scale value to ...

Страница 77: ...0 99 Display 1 TIME CONSTANT Display the actual value of the current output Display 0 000 mA CURRENT OUT VALUE Various output currents can be simulated in order to check any instruments which are connected Note The simulation mode selected affects only the selected current output The flow computer is fully operational during simulation Simulation mode is ended immediately after exiting this submen...

Страница 78: ...cations continuously and compare them to the saturated steam curve When the degree of superheat distance to the saturated steam curve drops below 5 C the relay switches and the message WET STEAM ALARM is displayed NOTE Relay response time is affected by the value entered for display damping The larger the display damping value the slower the relay response time will be This is intended to prevent ...

Страница 79: ...y as an additional pulse output Display HI ALARM FOLLOW RELAY MODE After configuring a relay for Alarm indication limit value the required setpoint can be set in this submenu If the variable reaches the set value the relay switches and the corresponding message is displayed Continuous switching near the setpoint can be prevented with the HYSTERESIS setting Note Be sure to select the units SYSTEM U...

Страница 80: ...FUNCTION or limit value The response of the relay during alarm status is determined by selecting the pulse width Pulse width 0 0 s Normal setting Relay is latched during alarm conditions Pulse width 0 1 9 9 s special setting Relay will energize for selected duration independent of the cause of the alarm This setting is only used in special cases i e for activating signal horns Case B Relay set for...

Страница 81: ...ty reasons the setting LATCH has been selected in the submenu RELAY MODE This ensures that the user is actively aware of the alarm message Note When in the HOME position press the ENTER key to acknowledge and clear alarms The alarm status can only be permanently cancelled if the cause of the alarm is removed Selection RESET ALARM NO RESET ALARM YES Display RESET NO RESET ALARM As an aid during sta...

Страница 82: ...ud rate for serial communication between the flow computer and a personal computer modem or printer Selection 9600 2400 1200 300 Display 9600 BAUD RATE Select the desired parity The setting selected here must agree with the parity setting for the computer modem or printer Selection NONE ODD EVEN Display NONE PARITY The control of data flow can be defined The setting required is determined by the h...

Страница 83: ...L NO YES HEAT GRAND TOTAL NO YES MASS FLOW NO YES MASS TOTAL NO YES MASS GRAND TOTAL NO YES COR VOLUME FLOW NO YES COR VOL GRAND TOTAL NO YES VOLUME FLOW NO YES VOLUME TOTAL NO YES VOL GRAND TOTAL NO YES TEMPERATURE NO YES TEMPERATURE 2 NO YES DELTA TEMPERATURE NO YES PROCESS PRESSURE NO YES DENSITY NO YES SPEC ENTHALPY NO YES DIFF PRESSURE NO YES ERRORS NO YES ALARMS NO YES PEAK DEMAND NO YES DEM...

Страница 84: ...ction YES Data is logged but no information is sent on print event NO Data is logged and immediately transmitted Display YES DATALOG ONLY Define a time interval Variables and parameters will be periodically logged at regular intervals of this value of time The setting 00 00 deactivates this feature Input Time value in hours minutes HH MM Display 00 00 PRINT INTERVAL Define the time of day that var...

Страница 85: ...r initializing modem NO Device will not be used to initialize modem Display YES DEVICE MASTER MODEM CONTROL Modem DEVICE MASTER Modem Select YES or NO for Send Inc Tot Only Selection YES Unit will send Inc Tot Only NO Unit will not send Inc Tot Only Display YES SEND INC TOT ONLY Enter multiplying factor for Inc Only Scaler Selection X1 X10 X100 X1000 Display X1 INC ONLY SCALER Select YES or NO for...

Страница 86: ...error occurs Display YES CALL ON ERROR CALL ON ERROR Modem Select YES or NO for Modem Auto Answer Selection YES Modem will answer incoming calls NO Modem will not answer incoming calls Display YES MODEM AUTO ANSWER Define a Call Out Number Enter the telephone number or email address to be called Input max 16 digit phone number Display CALL OUT NO Define the Call Out Time Enter scheduled call out t...

Страница 87: ...r Hang Up If Inactive Selection YES Unit will hang up if remote PC fails to respond within several minutes after connection is established NO Unit will not hang up if remote PC fails to respond after connection is established Display YES HANG UP IF INACTIVE HANG UP IF INACTIVE Modem ...

Страница 88: ...AY 1 HIGH ALARM NO YES RELAY 1 LOW ALARM NO YES RELAY 2 HIGH ALARM NO YES RELAY 2 LOW ALARM NO YES RELAY 3 HIGH ALARM NO YES RELAY 3 LOW ALARM NO YES TRAP ERROR NO YES TRAP BLOWING NO YES INPUT 3 OVERRANGE NO YES INPUT 3 BROKEN NO YES 24VDC OUT ERROR NO YES PULSE IN ERROR NO YES INPUT 1 Vin ERROR NO YES INPUT 1 Iin ERROR NO YES INPUT 2 Iin ERROR NO YES INPUT 2 RTD ERROR NO YES INPUT 3 Iin ERROR NO...

Страница 89: ...mputers are connected to the same interface Selection 3 digit number 1 247 Display 1 DEVICE ID Enter the baud rate for serial communication between the flow computer and a personal computer Selection 19200 9600 4800 2400 1200 600 300 Display 9600 BAUD RATE Select the desired parity The setting selected here must agree with the parity setting for the computer Selection NONE ODD EVEN Display NONE PA...

Страница 90: ... of errors that have occurred can be viewed and cleared Selection VIEW NO VIEW YES If YES is selected the error log can be viewed and errors individually cleared if editing enabled with Service Code Display CLEAR NO POWER FAILURE Display the software version of the flow computer Contact local agent for upgrade information Example 02 00 14 Display 02 00 14 SOFTWARE VERSION Display the hardware vers...

Страница 91: ...LEARN 0 0 V PIN 2 Apply 10 0 Volts Press enter to learn 10 0 Volts Display RESULT 10 000 V LEARN 10 0 V PIN 2 Connect your current source to Pin 2 and Pin 4 Apply 0 0 mA Press enter to learn 0 0 mA Display RESULT 0 000 mA LEARN 0 0 mA PIN 2 Apply 20 0 mA Press enter to learn 20 0 mA Display RESULT 20 000 mA LEARN 20 0 mA PIN 2 Connect your current source to Pin 3 and Pin 4 Apply 0 0 mA Press enter...

Страница 92: ...Press enter to learn 20 0 mA Display RESULT 20 000 mA LEARN 20 0 mA PIN 11 Connect a 100Ω resistor between Pins 6 7 and place a jumper wire between Pins 5 6 Press enter to learn RTD resistance on Pins 5 6 7 Display RESULT 100 00 ohm LEARN RTD PIN 5 6 7 Connect a 100Ω resistor between Pins 10 11 and place a jumper wire between Pins 9 10 Press enter to learn RTD resistance on Pins 9 10 11 Display RE...

Страница 93: ...the reading on the ammeter Using the numeric keys enter the actual reading in mA and press enter Display ACTUAL 4 041 mA ADJ 4mA PIN 15 16 Observe the reading on the ammeter Using the numeric keys enter the actual reading in mA and press enter Display ACTUAL 20 006 mA ADJ 20mA PIN 15 16 Connect your frequency meter to Pin 12 and Pin 13 This feature is used to check the pulse output Calibration is ...

Страница 94: ...y 0 000 Hz INPUT FREQUENCY The calibration procedure is complete You may now choose to save this calibration as the Factory Calibration Display NO SAVE AS FACTORY CAL If you are not satisfied with the calibration results you can restore the last saved Factory Calibration Display NO RESTOR FACT CALIB This feature allows you to enter the next date you would like the unit to be calibrated This is ver...

Страница 95: ...Display RUN NO SELF CHECK The Service Test requires a special calibration apparatus that connects to the rear terminals of the unit This is used to determine whether the flow computer or the field wiring is faulty The calibration apparatus may be purchased from your local distributor Display RUN NO SERVICE TEST PRINT SYSTEM SETUP SELF CHECK SERVICE TEST Not available with 3 Relay option NOTE This ...

Страница 96: ...ing program for the particular device he will be using Such standardized printouts list all the necessary information which the user will then be prompted for Several specialized flow equations are listed that are not intended for the standard unit but to be offered to appropriate OEMs or as special order items These are desig nated by a Note concerning Fluid Information The user will be prompted ...

Страница 97: ...rature Default Value Delta Temp Case Delta Temp T2 T1 Flowmeter location cold Delta Temp T1 T2 Flowmeter location hot Density Computation Water Case density_water density Tf Liquid Case density reference density 1 Therm Exp Coef Tf Tref 2 Steam Case density 1 specific volume Tf Pf Gas Case Pf Tref 273 15 Zref density reference density Pref Tf 273 15 Zf NOTE For Natural Gas is determined by NX 19 w...

Страница 98: ...s Over most normal measurement ranges 500 to 5000 psia 3 5 to 10 4 MPa and 10 to 100 F 23 to 38 C the NX 19 equation will compute the gas compressibility factor to within 0 2 of the values computed by the newer AGA 8 state equa tion The ranges over which the NX 19 equation applies are Pressure PG To 5000 psig 10 34 MPa gauge Temperature Tf 40 to 240 F 40 to 116 C Specific Gravity G 0 554 to 1 0 CO...

Страница 99: ... 1 32 to 1 40 E8 Ta T 1 09 Tb 1 09 T E1 1 0 00075p2 3 exp 20Ta 0 0011Ta 0 5 p2 2 17 1 4Ta 0 5 p 2 E2 1 0 00075p2 3 2 exp 20Tb 1 317Tb 4 p 1 69 p2 E3 1 0 00075p2 3 2 exp 20Tb 0 455 200Tb 6 0 03249Tb 2 0167Tb 2 18 028Tb 3 42 844Tb 4 p 1 3 1 69 2 1 25 p2 E4 1 0 00075p2 3 2 exp 20Tb 0 455 200Tb 6 0 03249Tb 2 0167Tb 2 18 028Tb 3 42 844Tb 4 p 1 3 1 69 2 1 25 80 0 88 t 2 p2 E5 E4 X E6 E3 X E7 E1 X E8 E7 ...

Страница 100: ...s conversion Liquid Case Y 1 0 Gas Steam Case Orifice Case delta P Y 1 0 0 41 0 35 B4 isentropic exponent Pf 27 7 V Cone Venturi Flow Nozzle Wedge Case NOTE An equivalent formula is used by V Cone flowmeter types Target Annubar Pitot Case 7 3 9 Sensible Heat Flow Computation 7 3 10 Liquid Delta Heat Computation 7 3 11 Expansion Factor Computation for Square Law Flow meters Heat Flow Computation St...

Страница 101: ...n psia Γ k Isentropic exponent for a real gas or steam Accelabar Case Γ fta w coef a a P h Y Y 73 27 1 Where a Y General Accelerator gas expansion factor dimensionless coef a Y Accelabar gas expansion factor coefficient dimensionless w h Differential pressure inches H2O 68 F fta P Flowing Accelerator Throat Pressure psia Flowing throat pressure in psig atmospheric pressure in psi Γ Isentropic Expo...

Страница 102: ... volume flow K Factor Hz 1 Meter Exp Coeff Tf Tcal Analog Linearization Case Input Flow Correction Factor Input Flow volume flow 1 Meter Exp Coeff Tf Tcal Square Law Linearization Case DP Factor RN 2 delta P 1 2 volume flow Y 1 Meter Exp Coeff Tf Tcal density Pulse UVC Case input frequency Time Scaling Factor volume flow K Factor Hz cstks 1 Meter Exp Coeff Tf Tcal Shunt Flow Bypass Flowmeter input...

Страница 103: ...he density corrected volumetric flowrate Qd Qc Dn Da 0 5 Where Qd density corrected volumetric flowrate Qc nominal water volumetric flowrate column 6 corrected for Reynolds Number and gas expansion effects Da actual flowing density of working fluid Dn nominal density of water at reference conditions Once corrected for density a further correction is required to take into account the effect of temp...

Страница 104: ...user is prompted for the following mass flow or volume flow or corrected volume flow as indicated by the flow equation Differential Pressure Inlet Pressure Temperature Density Isentropic Exponent The unit then computes the following results corresponding to the user entry conditions and appropriate methods Y Finally the DP Factor is computed as follows Steam Case mass flow 1 Meter Exp Coeff Tf Tca...

Страница 105: ...g of calibration and maintenance reports For transaction printing the user defines the items to be included in the printed document The user can also select what initiates the transaction print generated as part of the setup of the instrument The transaction document may be initiated via a front panel key depression In data logging the user defines the items to be included in each data log as a pr...

Страница 106: ...tion Port with PC The flow computer s RS 485 channel supports a number of Modbus RTU commands Refer to port pinout below for wiring details Modbus RTU drivers are available from third party sources for a variety of Man Machine Interface software for IBM compatible PC s The user reads and writes information from to the RS 485 using the Modbus RTU commands The FC then responds to these information a...

Страница 107: ...e serial communication port on your PC is either a 25 pin or 9 pin connector No cabling is supplied with the setup software A cable must be purchased separately or made by the user It is recommended to purchase a serial cable which matches the available communication port on you PC and a 9 pin male connection for the FC serial port 10 3 Installation for Windows 3 1 or 3 11 The Setup Software inclu...

Страница 108: ...e to an attached unit The Communications with FC Section allows the user to upload the setup from the unit or download the program s current template to the unit The Print report Section allows the user to 1 Configure the current Windows printer through the Select Printer option 2 Print a Maintenance Report through the PC s printer using the Print Maintenance option 3 Print the current setup throu...

Страница 109: ...p title The data can be expanded by clicking on the plus sign in front of the group title If a group is collapsed and data in the group changes on refresh the group will automatically expand Data in the Error Log section does not expand or collapse Changing the view items requires stopping the current viewing checking the new selections and then restarting the viewer If communication errors occur ...

Страница 110: ... a flow sensor was calibrated on a test fluid Combustion Heat The energy released by a fluid fuel during combustion Default A value to be assumed for manual inputs or in the event of a failure in a input sensor Display Damping An averaging filter constant used to smooth out display bounce DP Factor A scaling constant for a square law flowmeter Error Log A historical record which captures errors wh...

Страница 111: ... used to correct for changes in flowmeter housing dimensioned changes with temperature Mole The composition of an individual gas in a gas mixture NX 19 A series of equations used to compute the compressibility of natural gas as a function of specific gravity temperature pressure and gas composition Protocol An agreed upon method of information exchange Print Initiate A user specified condition whi...

Страница 112: ...action SQR Law 16PT Square Law 16pt A mathematical approximation to a square law device where the discharge coefficient is represented as a table of DP Factor vs Reynold s Number Steam Delta Heat A computation of the net heat of saturated steam equal to the total heat of steam minus the heat of water at the measured actual temperature Steam Heat A computation of the total heat of steam Steam Net H...

Страница 113: ...e Yes No Does the display show an error message Yes No See section 12 3 for cause and remedy No system or process errors present Are the Display Characters Visible No Yes Factory Service Required Factory Service Required 12 Diagnosis and Troubleshooting 12 1 Response of FC on Error or Alarm Error indications which occur during operation are indicated alternately with the measured values The FC Flo...

Страница 114: ...uit detected on input 3 Open circuit detected on RTD 1 input Short circuit detected on RTD 1 input Remedy Acknowledge Error Remedy not required Acknowledge Error Remedy not required Check wiring and communication settings protocol Repeat Calibration Check paper and printer connections Check application Insure that all sensors are working properly Check application Insure that all sensors are worki...

Страница 115: ...ected on input 1 current input during service test run Error detected on input 2 during service test run Error detected on input 3 during service test run Remedy Check wiring and RTD Check wiring and RTD Adjust pulse value or pulse width Adjust the 0 Full Scale values or increase lower flowrate Adjust the 0 Full Scale values or increase lower flowrate Not required Not required Not required Not req...

Страница 116: ...ge A display malfunction has been detected Part or all of the internal RAM is damaged Steam trap malfunction Steam trap malfunction Contents of datalog were corrupt and lost Remedy By Factory Service By Factory Service By Factory Service By Factory Service By Factory Service By Factory Service By Factory Service By Factory Service Re Enter setup data If problem persists Fac tory service required R...

Страница 117: ... 60 0 0001015 0 1 0 001969 3315 61 HYDROGEN 4 41874 432 2 0 0007259 60620 5 2 336 0 003537 48 5432 ETHYLENE 34 085 127 5 0 00068257 22292 1 0 000238 26665 90 HELIUM 9 14157 452 1 0 00011477 0 1 0 0033 0 GAS FLUID REF REF REF Z Z FACTOR AT SPECIFIC COMBUSTION ISENTROPIC VISCOSITY BY VISCOSITY BY DENSITY TEMP ºF FACTOR 100 PSIA HEAT HEAT Btu lb EXPONENT ANDREDE s ANDREDE s lb ft3 14 696 PSIA and 60 ...

Страница 118: ...OW SCALE VALUE TIME CON STANT CURRENT OUT VALUE DISPLAY SIMULATION CURRENT ASSIGN CUR RENT OUT CURRENT RANGE LOW SCALE VALUE FULL SCALE VALUE TIME CON STANT CURRENT OUT VALUE DISPLAY SIMULATION CURRENT ASSIGN CUR RENT OUT CURRENT RANGE SELECT RELAY 1 2 3 LIMIT SET POINT PULSE VALUE HYSTERESIS RELAY FUNC TION RELAY MODE FULL SCALE VALUE EXAMINE AUDIT TRAIL ERROR LOG SOFTWARE VERSION DISPLAY HARDWAR...

Страница 119: ...OUT VALUE DISPLAY SIMULATION CURRENT ASSIGN CUR RENT OUT CURRENT RANGE LOW SCALE VALUE FULL SCALE VALUE TIME CON STANT CURRENT OUT VALUE DISPLAY SIMULATION CURRENT ASSIGN CUR RENT OUT CURRENT RANGE RS232 USAGE DEVICE ID BAUD RATE PARITY HANDSHAKE PRINT LIST FULL SCALE VALUE EXAMINE AUDIT TRAIL ERROR LOG SOFTWARE VERSION DISPLAY HARDWARE VERSION DISPLAY PRINT SYSTEM SETUP SELF CHECK SYSTEM PARAMETE...

Страница 120: ...w Com puter will construct the reply message and send it using Modbus RTU protocol RTU Mode The Flow Computer with RS 485 communications option supports the Modbus RTU Remote Terminal Unit mode only The Modbus ASCII mode is not supported The main advantage of the RTU mode is that its greater character density allows better data throughput than ASCII for the same baud rate The Modbus RTU uses a Mas...

Страница 121: ...85 chain and nowhere else On the Flow Computer this is accomplished by connecting a jumper from the terminal labeled Terminating Resistor 180 Ω to the terminal labeled TX RX at the RS 485 port If lightning protection is required a suitable surge protector should be used For additional information refer to the technical requirements of EIA 485 interface adaptor user manual and the communication sof...

Страница 122: ... E W O P C D C D N I E S L U P T U P T U O C D N O M M O C T I C X E D T R S N E S D T R S N E S D T R 8 9 0 1 1 1 2 1 2 3 4 5 6 7 1 E R U T A R E P M E T n i I n i V n i I N I N I W O L F T I C X E D T R S N E S D T R S N E S D T R T U P T U O C D E R U S S E R P 2 P M E T n i I N I 1 T U P T U O G O L A N A 2 Y L R M O C 2 Y L R O N 1 Y L R M O C 8 1 9 1 0 2 1 2 2 2 2 Y L R O N 2 Y L R M O C 1 Y...

Страница 123: ...39 40040 Float Alarm Point 2 Reg 40041 40042 Float Alarm Point 3 Reg 40043 40044 Float Year Reg 40045 Integer Month Reg 40046 Integer Day Reg 40047 Integer Hours Reg 40048 Integer Min Reg 40049 Integer Sec Reg 40050 Integer Peak Demand Reg 40051 40052 Float Demand Last Reg 40053 40054 Float Viscosity Reg 40055 40056 Float Abs Viscosity Reg 40057 40058 Float Reserved Reg 40059 40060 Float Power Los...

Страница 124: ...ower Failure Coil 00001 bit System Alarm Watchdog Coil 00002 bit System Alarm Communication Error Coil 00003 bit System Alarm Calibration Error Coil 00004 bit System Alarm Print Buffer Full Coil 00005 bit System Alarm Totalizer Error Coil 00006 bit Sensor Process Alarm Wet Steam Alarm Coil 00007 bit Sensor Process Alarm Off Fluid Table Coil 00008 bit Sensor Process Alarm Flow In Over Range Coil 00...

Страница 125: ...oil 00038 bit Service Test Relay 1 Error Coil 00039 bit Service Test Relay 2 Error Coil 00040 bit Service Test RS 232 Error Coil 00041 bit Self Test A D Malfunction Coil 00042 bit Self Test Program Error Coil 00043 bit Self Test Setup Data Lost Coil 00044 bit Self Test Time Clock Lost Coil 00045 bit Self Test Display Malfunction Coil 00046 bit Self Test Ram Malfunction Coil 00047 bit Language Sele...

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