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FIGURE 1-8. Intrinsically Safe System Installation Schematic (CSA)

DWG. NO.

REV.

1400162

A

MODEL 2081 pH

SECTION 1.0

INSTALLATION

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Содержание 2081 pH

Страница 1: ...Model 2081 pH Smart Microprocessor Analyzer Instruction Manual PN 5102081P November 2000 FREE EXTENDED W ARRANTY See offer at back of manual ...

Страница 2: ... your Rosemount representative for clarifi cation Follow all warnings cautions and instructions marked on and supplied with the product Inform and educate your personnel in the proper installation operation and maintenance of the product Install your equipment as specified in the Installation Instructions of the appropriate Instruction Manual and per applicable local and national codes Connect all...

Страница 3: ...election 15 3 3 Value Adjustment 15 4 0 RANGE CONFIGURATION 16 5 0 START UP AND CALIBRATION 17 5 1 General 17 5 2 Temperature Calibration 17 5 3 Buffer Calibration 17 5 4 pH Standardization 18 5 5 pH Glass Slope 18 5 6 Hold Mode for Maintenance 19 5 7 Sensor Maintenance 19 6 0 KEYBOARD SECURITY 20 7 0 THEORY OF OPERATION 21 8 0 DIAGNOSTICS AND TROUBLESHOOTING 22 8 1 Diagnostics 22 8 2 Troubleshoot...

Страница 4: ...ematic FM Page 1 of 2 8 1 7 Intrinsically Safe System Installation Schematic FM Page 2 of 2 9 1 8 Intrinsically Safe System Installation Schematic CSA 10 2 1 Wiring Setup 11 2 2 Button Use 12 3 1 Menu Description 15 6 1 Model 2081 pH Jumper Settings 20 8 1 Bench Check with preamp 25 8 2 Bench Check without preamp 25 LIST OF TABLES Table No Title Page 8 1 Fault Mnemonics 22 8 2 RTD Resistance Value...

Страница 5: ... is for the sensor wiring To prevent moisture from entering the housing the use of weathertight cable glands or conduit is recom mended If conduit is used it should be positioned to prevent condensation from draining into the housing Conduit connections on the transmitter housing should be plugged and sealed to avoid moisture accumulation in the terminal side of the housing CAUTION If the connecti...

Страница 6: ...S 1 4 1 General This section describes how to set the jumpers on the CPU board for the following CAUTION The circuit board is electrostatically sensi tive Be sure to observe handling pre cautions for static sensitive components 1 Output value in fault alarm mode 2 50 60 Hz operation 3 Security 1 4 2 Fault Mode Output The default output of the transmitter during a fault condition is determined by t...

Страница 7: ...ot used it must be closed with a threaded metal plug with at least five threads engaged 4 The serial tag cover on the external ZERO and SPAN adjustments must be in place 6 Explosion proof installation must be in accordance with Drawing Number 1400160 see Figure 1 5 5 For sensors in hazardous area locations explosion proof junction boxes can be provided to house the preamplifier This does not warra...

Страница 8: ...4 FIGURE 1 1 Model 2081 pH Power and Sensor Wiring see also Figure 1 2 for sensor wiring WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH DWG NO REV 40208101 B MODEL 2081 pH SECTION 1 0 INSTALLATION ...

Страница 9: ...5 FIGURE 1 2 Sensor Wiring Details For use with 2081 pH WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER INCH DWG NO REV 40039903 G MODEL 2081 pH SECTION 1 0 INSTALLATION ...

Страница 10: ...6 DWG NO REV 233050 00 FIGURE 1 3 Model 2081 pH Jumper Settings FIGURE 1 4 BASEEFA Label for Intrinsically Safe Installation DWG NO REV 9240044 00 A MODEL 2081 pH SECTION 1 0 INSTALLATION ...

Страница 11: ...7 FIGURE 1 5 Explosion Proof System Installation Schematic FM DWG NO REV 1400160 A MODEL 2081 pH SECTION 1 0 INSTALLATION ...

Страница 12: ...8 FIGURE 1 6 Intrinsically Safe System Installation Schematic FM Page 1 of 2 DWG NO REV 1400161 A MODEL 2081 pH SECTION 1 0 INSTALLATION ...

Страница 13: ...9 FIGURE 1 7 Intrinsically Safe System Installation Schematic FM Page 2 of 2 DWG NO REV 1400161 A MODEL 2081 pH SECTION 1 0 INSTALLATION ...

Страница 14: ...10 FIGURE 1 8 Intrinsically Safe System Installation Schematic CSA DWG NO REV 1400162 A MODEL 2081 pH SECTION 1 0 INSTALLATION ...

Страница 15: ...t 2 2 Set up instrument Connect a power supply current meter and an appro priate sensor to the 2081 Transmitter as illustrated in the figure below 2 1 1 Connect loop power wire power supply to the 2081 TB2 adjust supply to approx 24VDC 2 1 2 Connect current meter wire meter to TEST connections to read mA output to Model 2081 short cover removed View of Interface PCB Install JP1 if internal preampl...

Страница 16: ... 2 Enters new value into memory if only held momentarily Number one in to scroll through digit values Number two in to select digit position 2 3 Temperature Calibration Since pH value is related to the temperature of the process the 2081 transmitter temperature readings should be checked for matching with your standardized temperature measuring sensor To do so 2 3 1 Place your sensor connected to ...

Страница 17: ...value that the sensor is in 1 Press button 2 to select digit position to modify Selected digit will be flashing Holding the button in will cause selected position to shift to the left then back around again 2 Release button when the desired digit is flashing 3 Press button 1 to change digit s value Holding the button in will cause the selected digit to increase in value then back around again 4 Re...

Страница 18: ...H 2 5 1 Calculate the proper current output for the buffer being used with the adjacent formula Example Sensor is acclimated in 10 pH buffer Transmitter is factory configured for 0 14 pH full scale range and 4 20 mA output Current output should read 15 43 mA 2 5 2 Remove the sensor from buffer 2 Rinse Sensor in water Deionized then place in the 1st buffer solution Check the current output with the...

Страница 19: ...nits when appropriate When the transmitter is in hold output mode a flashing flag will appear on the middle right hand side of the display and HoId will flash periodically The output will remain at the last process value To remove the hold mode scroll to HoId again and release both buttons 3 3 VALUE ADJUSTMENT Selection of a menu item that has a user adjustable value will cause a numeric display w...

Страница 20: ...h buttons briefly The display will return to dis playing the present pH value B Full Scale 20 mA HiPH 1 Depress and hold both push buttons The dis play will begin to auto scroll 2 Release both keys when HiPH is displayed The present 20 mA pH value in memory will be dis played with the last digit flashing 3 Depress and hold push button 1 scroll and 2 shift as needed to display the desired pH value ...

Страница 21: ...eally not be reused because of possi ble contamination 2 Depress and hold both push buttons to scroll through the menu items to HoId then release both buttons to place the transmitter in hold sta tus HoId will periodically flash This will main tain the output at the last process value read by the transmitter and activate the hold flag on the middle right hand side of the display 3 Remove the senso...

Страница 22: ...nu items to Std then release both push buttons The display will show the present pH value with the last digit flashing 5 Correct the pH standardize value for time lag by adding the difference calculated in step 3 to the amount displayed on the transmitter Example If pH in step 1 is 2 3 and pH in step 2 is 2 8 the difference noted in step 3 would be 5 pH The present transmitter pH value would be in...

Страница 23: ...b The display will stop showing Hold every two seconds c The transmitter output current will return to normal operation 5 7 SENSOR MAINTENANCE Always calibrate after cleaning or repair of the pH sensor Always place transmitter into the Hold mode of operation while preforming any maintenance to the sensor to avoid loss of process control Always return transmitter to normal operation after installin...

Страница 24: ...only NOTE For easy access the electronics assembly may be removed by pulling the assembly straight out 3 Replace the display side cover CAUTION A minimum of seven cover threads must be engaged in order for the transmitter to meet explosion proof requirements Replace the jumper to enable push button operation FIGURE 6 1 Model 2081 pH Jumper Settings JP3 JP4 JP1 JP1 Selects for 50 or 60 Hz operating...

Страница 25: ...ocess pH The reference electrode is a second half cell that completes the circuit via a liquid junction The high imped ance signal is preamplified at or near the sensor to allow a stable noise free signal that can be transmitted up to 1000 feet The transmitter also measures the process temperature via a platinum 100 ohm RTD imbedded in the sensor Advanced circuitry is used to eliminate errors due ...

Страница 26: ...n above 20 mA See Figure 1 3 for jumper location The display will alter nate between the pH value and the appropriate fault mnemonic Table 8 1 The fault sequence will contin ue until the cause of the fault has been corrected 8 1 1 Diagnostic Messages Table 8 1 lists the fault dis play discribes the meaning of each and appropriate corrective action All of these faults are detected online except for...

Страница 27: ...e 8 1 and Table 8 5 the transmitter can display the input in millivolts generated from the sensor See Table 8 3 for how the millivolt input relates to pH If the transmitter values are not within about 20 of those in Table 8 3 the transmitter has been incorrectly stan dardized for pH the reference may be significantly poisoned or some other significant problem exists To read the millivolt input go ...

Страница 28: ...LP to 59 1 3 Defective electrode 3 Replace electrode 4 Plugged liquid junction 4 Replace liquid junction Fault code rngE LOOP 1 Process value is outside 1 Return process to normal 4 20 mA range points Check grab sample Fault code FAIL 1 Input signals are invalid 1 Toggle Power 2 Calculation is invalid 2 Change slope value SLP to 59 1 3 Defective PCB stack 3 Perform a complete bench check to try to...

Страница 29: ...OMM Millivolt Source Jmpr 12 11 10 9 8 7 6 5 4 3 2 1 4 3 2 1 TB2 Pin connection on 11 to bypass the Preamp Pin connection on 2 to check without Preamp mA Power Supply RTD Decade Box or Resistor Loop Loop TEST COMM Voltage Source Jmpr JP1 installed NOTE Using millivolts for this test will result in a SnSr FAIL fault code See Table 8 4 for valid voltage inputs JP1 is removed MODEL 2081 pH SECTION 8 ...

Страница 30: ...e values electrode slope and fault messages All functions are microprocessor based using no switches or potentiometers The isolated 4 20 mA output is continuously expandable over the measurement range and may be displayed in either milliamps or percent of full scale A hold output function is available for manual control during routine sensor maintenance While in hold mode the current output signal...

Страница 31: ...imum loop resistance load of 250 ohms and minimum power supply voltage of 18 volts DC is required for digital communication Local Indication Four digit LCD Ambient Temperature 30 to 70 C 22 to 158 F Failure Mode Alarm The analog signal will be driven either below 4 mA or above 20 mA user selectable to alert the user Transmitter Security Security activation by internal jumper prevents changes to th...

Страница 32: ... the transmitter is 15 ft 4 6 m or less The 2081 pH transmitter contains a jumper selectable preamp that allows operation in any of these 3 modes 9 6 ORDERING INFORMATION Model 2081 pH Two Wire Transmitter is housed in a NEMA 4X IP65 weatherproof corrosion resistant enclo sure suitable for pipe mounting Standard features include LCD digital display automatic temperature compensa tion and isolated ...

Страница 33: ...ble accuracy No field calibration is required MODEL 2081 pH SECTION 9 0 DESCRIPTION AND SPECIFICATIONS HART COMMUNICATION MODEL 275 HART COMMUNICATOR This hand held interface provides a common communication link to all HART SMART microprocessor based instruments and allows access to AMS Asset Management Solutions Digital communication may be used to set up and control the field device and read the...

Страница 34: ...ur Letter of Transmittal see Warranty If possible pack the materials in the same manner 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 ____ 10 3 NON WARRANTY REPAIR The following is the procedure for returning for ...

Страница 35: ...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 36: ...FOLD ALONG DOTTED LINES ...

Страница 37: ...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 38: ...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 39: ...6 USA Tel 949 863 1181 http www RAuniloc com Rosemount Analytical Inc 1999 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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