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Rosemount Analytical 54C, Инструкция по эксплуатации

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7-1

MODEL 54 C

SECTION 7

THEORY OF OPERATION

SECTION 7.0

THEORY OF OPERATION

INDUCTIVE (TOROIDAL) CONDUCTIVITY

The basic conductivity measurement is made using
two toroids. The drive toroid induces a current in the
liquid loop. The second toroid (receiver) computes the
liquid current loop. By keeping the number of turns
(windings around each toroid) and the drive voltage
across the transmitter toroid constant the current in the
liquid loop is directly proportional to the conductivity of
the loop.

The actual value of the drive voltage generated by the
Model 54C (either 1 volt peak-to-peak or 0.1 volt peak-
to-peak) is determined by the conductivity being
measured. The current sensed by the receiver toroid
is converted at the analyzer to an AC voltage through
a high performance amplifier. This voltage is further
converted to a DC time-proportional signal which is
used by the microprocessor to measure and compute
absolute conductivity. The microprocessor also meas-
ures the raw DC voltage used to generate the drive
voltage and the zero input at the time-proportional
converter. These measurements are used to correct
for ambient temperature and line voltage variations.

Rosemount Analytical also offers a booklet titled
“Conductance Data for Commonly Used Chemicals.”
This booklet includes conductance information for over
100 industrial chemicals commonly used.

This section is a general description of how the analyz-
er operates. This section is for those users who desire
a greater understanding of the analyzer’s operation.

CONTACTING CONDUCTIVITY

The conductivity sensor produces a “conductance
signal” that is proportional to the conductivity of the
process solution. The 54C Analyzer subtracts a base-
line zero conductivity signal from the sensor signal
and multiplies the result by the cell constant and the
cell factor. This absolute conductivity is then corrected
to the reference temperature (usually 25°C). by accu-
rately measuring the process temperature by means of
a RTD located in the conductivity sensor. The micro-
processor also adjusts the amount of correction
required for temperature compensation by means of a
temperature slope adjustment. This slope may be
adjusted between 0 to 5%/°C either manually via the
keyboard or automatically during bench or process
calibration. This slope controls the amount of correc-
tion required in the temperature compensation circuit,
and is specific to the process, giving you the most
accurate conductivity reading possible.

Содержание 54C

Страница 1: ...Model 54C Conductivity Microprocessor Analyzer Instruction Manual 5100054C July 1999 FREE EXTENDED WARRANTY See offer at back of manual ...

Страница 2: ...edures can affect the product s performance and place the safe operation of your process at risk Look alike substitu tions may result in fire electrical hazards or improper operation Ensure that all equipment doors are closed and protec tive covers are in place except when maintenance is being performed by qualified persons to prevent elec trical shock and personal injury Rosemount Analytical Inc ...

Страница 3: ......

Страница 4: ...n of Temperature Sensor RTD 3 12 4 4 0 0 C CA AL LI IB BR RA AT TI IO ON N 4 4 1 1 4 1 Initial Setup 4 1 4 2 Temperature Adjustment 4 4 4 3 Conductivity Standardization 4 5 4 4 Hold Outputs 4 5 4 5 Instrument Maintenance 4 5 5 5 0 0 D DI IA AG GN NO OS ST TI IC CS S A AN ND D T TR RO OU UB BL LE ES SH HO OO OT TI IN NG G 5 5 1 1 5 1 Diagnostic Messages 5 2 5 2 Displaying Diagnostic Variables 5 4 5...

Страница 5: ...Input and Sensor Wiring Code 08 1 6 1 8 Wiring of Contacting Conductivity Sensors 1 7 1 9 Wiring of Inductive Conductivity Sensors 1 8 2 1 Model 54 Front Panel with Operating Display 2 1 3 1 Outline of Menu Levels 3 3 5 1 Troubleshooting Flow Chart 5 6 6 1 Model 54 Analyzer Exploded View 6 1 LIST OF TABLES Table No Title Page 3 1 Conductivity Settings List 3 1 5 1 Diagnostic Messages 5 2 5 2 Quick...

Страница 6: ...each screw until the mounting bracket holds analyzer firmly in place To avoid damaging the analyzer mounting brackets do not use excessive force 1 1 PREPARATION FOR INSTALLATION 1 Upon receipt of analyzer carefully inspect the shipping container for any evidence of damage If carton is damaged notify the carrier immediately 2 If shipping container is not damaged remove analyzer and all contents 3 C...

Страница 7: ...1 2 MODEL 54 C SECTION 1 INSTALLATION FIGURE 1 2 Panel Mounting Dimensions DWG NO REV 40005401 D WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH ...

Страница 8: ... hardware see Figure 1 4 1 2 3 Pipe Mounting P N 2002577 1 Attach the mounting bracket to the rear of the analyzer and tighten the four screws as shown in Figure 1 3 and Figure 1 5 2 Place supplied U bolts around the mounting pipe and through the pipe mounting bracket and mounting bracket Tighten the U bolt nuts until the analyzer is securely mounted to the pipe FIGURE 1 3 Two inch Pipe and Wall M...

Страница 9: ...al outputs and the opening on the right front is for current output wiring and the left front is for sensor wiring Refer to Figure 1 6 AC power wiring should be 14 gauge or greater Mount 1 2 inch conduit fittings using weather seals Bring all wiring through the conduits to the analyzer terminal strips Mount NEMA 4X or IP65 conduit plugs supplied into unused holes in the base of the analyz er CAUTI...

Страница 10: ...r must provide a means to discon nect the main power supply in the form of cir cuit breaker or switch The circuit breaker or the switch must be located in close proximity to the instrument and identified as the dis connecting device for the instrument NOTE HART communications not available Current output 1 switch must be in single loop position See Figure 1 7 1 3 1 Analyzer Wiring Figure 1 7 Figur...

Страница 11: ...1 6 MODEL 54 C SECTION 1 INSTALLATION FIGURE 1 7 Output Power Input and Sensor Wiring Code 08 DWG NO REV 40054C06 A ...

Страница 12: ...1 7 MODEL 54 C SECTION 1 INSTALLATION FIGURE 1 8 Wiring of Contacting Conductivity Sensors DWG NO REV 40054C02 B ENDURANCE MODEL 400 SERIES WIRING ...

Страница 13: ...1 8 MODEL 54 C SECTION 1 INSTALLATION AND QUICK START UP FIGURE 1 9 Wiring of Inductive Conductivity Sensors DWG NO REV 40054C03 B ...

Страница 14: ... the Model 54 C Analyzer front panel with the operating display screen shown The conduc tivity is continuously displayed in large numerals The process temperature and primary current output value are always displayed on the second line of the oper ating display screen The third line is customer config urable 2 2 FUNCTION KEYS Function key F1 will always be the Exit key Exit returns the display to ...

Страница 15: ...full scale mA _______ 5 Output 2 Units mA of full scale mA _______ 6 Language English Français Español Deutsch Italiano English _______ 7 Operating display lower left See section 3 3 Alarm 1 Setpoint _______ 8 Operating display lower right See section 3 3 Alarm 2 Setpoint _______ 9 Display contrast 0 9 9 darkest 4 _______ B Outputs Section 3 4 1 Hold Outputs and Relays Disable Enable 20 min timeou...

Страница 16: ...t Mode Alarms 1 3 Open Closed None Open _______ 4 Alarm 3 a Type Process alarm Timer Process alarm _______ b Settings if a is Process alarm Configuration High alarm Low alarm off High alarm _______ Hysteresis deadband 0 25 of setpoint 0 _______ Delay Time 0 99 sec 0 sec _______ c Settings if a is Timer Interval between timer cycles 0 999 9 hr 24 hr _______ Number of relay activations per cycle 1 6...

Страница 17: ...e main menu Level 1 Calibrate To access calibration selections from the main menu press Enter F4 with the cursor on Calibrate Standardize conductivity Initial setup and temperature adjustments are made at this level refer to Section 4 0 for these procedures LEVEL 1 CALIBRATE F1 F2 F3 F4 LEVEL 3 CONFIGURATION F1 F2 F3 F4 F1 F2 F3 F4 LEVEL 2 PROGRAM MAIN MENU PRESS MORE F3 Calibrate Diagnostic varia...

Страница 18: ... move to the next line Conductivity Units 1 mho cm Siemen cm 1000 mS cm 1 000 000 µS cm 1mS cm 1000 µS cm 3 Alarm 3 will display the relay configuration as high low or off if con figured as a process alarm If configured as a timer the selections are on or off On Initiates the timer sequence Off Deactivates the timer sequence NOTE Enter F4 must be pressed after a cursor value is changed for the ana...

Страница 19: ...3 4 If the analyzer has been configured for 0 20 mA output Section 3 4 the 4 mA label will be replaced by 0 mA The outputs can be simulated between 0 20 mA for the purpose of test ing devices such as valves pumps or recorders 4 This display allows simulation of both output 1 and output 2 Enter the value s to be simulated and press Enter F4 The analyzer sim ulates output 1 when Enter is pressed and...

Страница 20: ...ces The Display contrast selection makes the display become lighter or darker 0 is the lightest display and 9 is the darkest The display is immediately updated Press Exit F1 to return to the first configura tion menu 3 3 CONFIGURATION OF DISPLAY OPTIONS Lower Left of Operating Display AL 1 alarm 1 setpoint AL 3 alarm 3 setpoint ABS absolute conductivity CF cell factor Blank nothing displayed on lo...

Страница 21: ...ed output NOTE Enter F4 must be pressed after a cursor value is changed for the analyzer to update Pressing More F3 allows the configuration of hold and fault function 3 If fixed hold selected then output 1 fixed hold must be set at desired held output between 0 22 mA Fixed hold is factory set at 21 00 mA and fault conditions are factory set at 22 00 mA Pressing More F3 allows the selection of out...

Страница 22: ...ration menu O2 Hold Fixed value O2 Fixed Hold 21 00 mA O2 Fault 22 00 mA Exit More Enter O2 Temperature O2 4 20 mA O2 Dampen 0 sec Exit More Enter Menu Item Options O2 Output 2 Measurement Temp Conductivity O2 Current range 4 20 mA 0 20mA O2 Output 2 Dampen 0 255 sec Menu Item Options O2 Hold Output 2 action Last value in hold mode Fixed value O2 Fixed Hold if Output 2 hold is Fixed value 0 22 00 ...

Страница 23: ...elay 3 is a timer Note If A4 configuration is Fault the relay will activate in a fault condition To activate the complete diagnostics refer to Section 5 2 3 5 CONFIGURATION OF ALARM PARAMETERS Display Outputs Alarms Exit More Enter A1 Low A1 Hys 000 A1 Delay 0 sec Exit More Enter A2 High A2 Hys 000 A2 Delay 0 sec Exit More Enter Menu Item Options A1 alarm 1 Logic Low alarm High alarm Off not used ...

Страница 24: ... Timer setting Interval 000 0 hr Repeats 01 Exit More Enter More timer settings On 120 Off 1 sec Recovery 600 sec Exit More Enter Menu Item Options A3 alarm 3 Configuration Low alarm High alarm Off not used A3 alarm 3 Hysteresis deadband 0 25 A3 alarm 3 Delay time before relay activation and deactivation can prevent chatter 0 99 sec Menu Item Options Interval between cycles 0 999 9 hr No of activa...

Страница 25: ...nd press Enter F4 2 Pressing Exit F1 from this display returns screen to previous func tions NOTE A code of 000 disables security for that level NOTE The security feature will not activate until two minutes after the last keyboard activity It will activate immediately if power is removed from the analyzer then restored NOTE To access the code if it is forgotten press and hold F4 Key for 5 seconds ...

Страница 26: ...ay configure menu and press Enter F4 and More F3 Move the cursor to Temperature sensor and press Enter F4 2 Pressing Exit F1 several times will return the operating display 3 7 CONFIGURATION OF TEMPERATURE SENSOR RTD TYPE Temp sensor Pt 100 Exit Enter Security Temperature sensor Exit More Enter Menu Item Options Temperature sensor PT100 PT1000 ...

Страница 27: ... labels cell constant and temperature slope value Step 3 no calibration is required however if a standardi zation is performed the cell constant will change compensating for the process effects on the sensor If the cell constant is not entered a standardization or two point calibra tion will calculate the apparent cell constant and set the cell factor to one Subsequent standardizations will change...

Страница 28: ...eference the conductivity to 25 C or the solution must be meas ured at 25 C Write down the reading C Immerse the sensor into the process solution The sensor body must be held away from the bottom and sides of the sample s con tainer at a distance at least equal to the diameter of the sensor and the sensor cable must not be allowed to contact the solution Shake the sensor to ensure that no air bubb...

Страница 29: ...e extreme of the process H Enter the conductivity reading from B above at the second tem perature and press Enter F4 I The temperature slope will display Press Enter F4 and standard ize sensor 5 The analyzer compensates for differences in cable resistance by measuring a reading while the sensor is in air which has zero conductivity Slope 2 00 C Temperature slope calibration complete Exit Enter Sen...

Страница 30: ... enter the value into memory Press Exit F1 to return to the tem perature menu NOTE The temperature compensation can be changed to either automatic or manual The manual temperature value need only be entered if the temper ature compensation setting is manual In this case a value may be entered between 15 and 200 C 5 and 392 F Pressing the back arrow key will display the segment Pressing Exit F1 ret...

Страница 31: ... the grab sample is being measured 2 The conductivity reading in large numbers is the live process conductivity reading Thenextlinedisplaystheconductivityreadingwhenthedisplaywas accessed Pressingthearrowkeystochangethereadingandpressingenter F4 standardizes the conductivity reading The analyzer will continue to read this value until another key is pressed NOTE Before exiting the calibration mode ...

Страница 32: ...ne fault exists the dis play will sequence through the diagnostic messages This will continue until the cause of the fault has been corrected Troubleshooting is easy as 1 2 3 Step 1 Look for a diagnostic fault message on the display to help pinpoint the problem Refer to Table 5 1 for an explanation of the mes sage and a list of the possible problems that triggered it Step 2 Refer to the Quick Trou...

Страница 33: ...Input High input from sensor Reverse Input Faulty calibration of sensor zero Overange Conductivity out of range Hi reference drive High electronics range error Lo reference drive Low electronics range error Check Sensor Zero Sensor zero needs adjustment Zero Offset Error Sensor zero was unsuccessful 5 1 DIAGNOSTIC MESSAGES The Model 54 C software diagnostics constantly moni tor the loop for possib...

Страница 34: ...one and press F4 3 With the cursor on Display Affichage Indición Bildshirm Impostazioni visore press F4 4 Press F3 More Plus Más Weit Cont to display the second set of menu items 5 Press F4 move cursor to Language Langue Idioma Sprache Lingua option 6 With the down arrow key display the desired display language English Françias Español Deutsch Italiano and press F4 Screens shown are English displa...

Страница 35: ...tant the cell factor and the conductance signal from the sensor but is not temperature com pensated The cell constant is a property of any specific sensor and does not change The cell factor indicates nonidealety due to various factors 4 The second diagnostic variable screen displays temperature slope and software version To redisplay the first screen press More F3 To return to the main screen pre...

Страница 36: ...ir and access zero routine 5 3 QUICK TROUBLESHOOTING GUIDE Table 5 2 below identifies some of the more common symptoms and suggests actions to help resolve the prob lem Refer to Table 5 1 for a complete list of diagnostic messages 5 3 1 FIELD TROUBLESHOOTING When it is appar ent by grab sample analysis that the model 54C ana lyzer is giving inaccurate readings the following pro cedure should be fo...

Страница 37: ...ty Measurement Problem in the process Remove sensor from process and place sensor in air Zero instru ment Refer to Section 4 1 OK OK Place sensor in process and stan dardize Refer to Section 4 3 Check wiring for short NOTE Before starting this procedure make sure that all wiring is correct YES YES NO NO Does problem still exist YES NO 5 4 SYSTEMATIC TROUBLESHOOTING Check diagnostic messages Refer ...

Страница 38: ... 10 C 103 90 ohms 1039 ohms 20 C 107 79 ohms 1078 ohms 25 C 109 62 ohms 1096 ohms 30 C 111 67 ohms 1117 ohms 40 C 115 54 ohms 1155 ohms 50 C 119 40 ohms 1194 ohms 60 C 123 24 ohms 1232 ohms 70 C 127 07 ohms 1271 ohms 80 C 130 89 ohms 1309 ohms 90 C 134 70 ohms 1347 ohms 100 C 138 50 ohms 1385 ohms 5 6 CIRCUIT BOARD REPLACEMENT If it is necessary to replace the CPU Circuit Board or Power Supply Cir...

Страница 39: ...nge Pin 33286 00 Front Panel Gasket 5 33542 00 Power Supply Circuit Board Shield Code 08 6 33543 00 Half Shield 7 33293 00 Enclosure Rear 8 33326 00 CPU Circuit Board Cover 9100173 Fuse 9 33328 00 Display Insulator FIGURE 6 1 MODEL 54 C Analyzer Exploded View ACCESSORIES PART NO DESCRIPTION 2002577 Mounting Bracket 2 in Pipe or Wall 23545 00 Panel Mounting Kit 23554 00 Gland Fitting Kit 9510048 00...

Страница 40: ...perature and line voltage variations Rosemount Analytical also offers a booklet titled Conductance Data for Commonly Used Chemicals This booklet includes conductance information for over 100 industrial chemicals commonly used This section is a general description of how the analyz er operates This section is for those users who desire a greater understanding of the analyzer s operation CONTACTING ...

Страница 41: ...output is being simulated 2 pt buffer calibration is performed or if 20 min timeout and Hold mode is on then the display times out after 20 minutes If a security code is entered the security will lock when the display times out INTERVAL TIMER The interval timer may be used for periodic sensor cleaning or process adjustment The interval timer settings are 1 Switch Enables or disables the interval t...

Страница 42: ...tion 2 output range and alarm setpoint adjustment and 3 advanced configuration A hinged front panel pro vides convenient wiring access The two independent isolated outputs provide 4 20 or 0 20 mA signals for conductivity and temperature Both output ranges are programmable within the measurement ranges of conductivity and tempera ture A hold output mode allows manual control dur ing routine sensor ...

Страница 43: ...Amps 3 0 Amps 115 Vac 5 0 Amps 3 0 Amps 230 Vac 5 0 Amps 1 5 Amps Weight Shipping Weight 1 1 kg 1 6 kg 2 5 lb 3 5 lb INSTRUMENT SPECIFICATIONS 25 C Measurement Range See table on page 8 3 15 to 200 C 5 to 392 F Accuracy 0 5 of reading Repeatability 0 25 of reading Stability 0 25 of output range month noncumula tive Ambient Temperature Coefficient 0 01 of read ing C Temperature Compensation 15 to 2...

Страница 44: ...ing bracket 2 in pipe or wall 23545 00 Panel mounting kit 9240048 00 S S Tag specify marking CODE OPTIONS 08 115 230Vac 50 60Hz power CE MODEL 54 C MICROPROCESSOR ANALYZER CONTACTING SENSORS Conductivity Sensor 142 142 140 140 141 401 14 Model Number 400 150 141 150 150 402 403 402 403 400 402 403 400 402 403 Cell Constant 0 01 0 1 0 2 0 5 1 0 10 0 Minimum Range 1 2 4 100 200 2000 Maximum Range 20...

Страница 45: ...t be sup plied 3 Carefully package the materials and enclose your Letter of Transmittal see Warranty If possible pack the materials in the same man ner as they were received 4 Send the package prepaid to Rosemount Analytical Inc Uniloc Division Uniloc Division 2400 Barranca Parkway Irvine CA 92606 Attn Factory Repair RMA No ____________ Mark the package Returned for Repair Model No ____ 9 3 NON WA...

Страница 46: ...8 5 MODEL 54 C APPENDIX APPENDIX ...

Страница 47: ...8 6 MODEL 54 C APPENDIX ...

Страница 48: ...ZERLAND Baar Walterswil Fisher Rosemount UNITED ARAB EMIRATES Dubai Fisher Rosemount UNITED KINGDOM Bognor Regis Fisher Rosemount A Worldwide Network of Sales and Service The Rosemount customer sales and service organization comprises a network of fully equipped support centers strategi cally located throughout the world From many of these locations the Rosemount Group provides support distributio...

Страница 49: ...___________ __________________________________________________________________________________________________________________ __________________________________________________________________________________________________________________ WARRANTY REPAIR REQUESTED YES REFERENCE ORIGINAL ROSEMOUNT ANALYTICAL ORDER NO _______________________________________________ CUSTOMER PURCHASE ORDER NO ____...

Страница 50: ...FOLD ALONG DOTTED LINES ...

Страница 51: ...pplication news check one sales representative mail fax my fax number is ____________________ E mail my e mail address is ____________________ phone CUSTOMER SATISFACTION SURVEY Please let us know how satisfied you are with your new instrument MODEL ______________________________ How easy was it to do the following Very Easy Somewhat Not Very Not At All Easy Easy Easy Unpack 1 2 3 4 Wire 1 2 3 4 M...

Страница 52: ...ss or damage directly or indirectly arising from the use of the equipment or goods from breach of any warranty or from any other cause All other warranties expressed or implied are hereby excluded IN CONSIDERATION OF THE STATED PURCHASE PRICE OF THE GOODS SELLER GRANTS ONLY THE ABOVE STAT ED EXPRESS WARRANTY NO OTHER WARRANTIES ARE GRANTED INCLUDING BUT NOT LIMITED TO EXPRESS AND IMPLIED WARRANTIE...

Страница 53: ...6 USA Tel 949 863 1181 http www RAuniloc com Rosemount Analytical Inc 1998 Credit Cards for U S Purchases Only UNILOC DIVISION CUSTOMER SUPPORT CENTER 1 800 854 8257 The right people the right answers right now ON LINE ORDERING NOW AVAILABLE ON OUR WEB SITE http www RAuniloc com ...

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