Emerson 499A CL-01 User's Manual
Contents
1. USED FIGURE 9 Wiring Sensor with Standard Cable to FIGURE 10 Wiring Sensor with Optimum EMI RFI or Model 5081 A Transmitter Variopol Cable to Model 5081 A Transmitter te CATHODE 11 ANODE pH IN pH GUARD SOL GND pH GUARD REF IN coL GND REF GUARD E le EF RE z P RTO RTD SENSE RTD FIGURE 11 Wiring Sensor with Standard Cable to FIGURE 12 Wiring Sensor with Optimum EMI RFI or Model Xmt A Transmitter Variopol Cable to Model Xmt A Transmitter MODEL 499A CL 01 TBS had RTM CATHODE SNS m RIDIN Z 2K CONNECT CLEAR SHIELD WIRES TO SOL GND TERMINAL ON TB 2 USE WIRE NUT AND PIGTAIL IF NECESSARY FIGURE 13 Wiring Sensor with Standard Cable to Model 1066 Transmitter ANODE 4 PAN RTO RETURN 5 j a Y gt H O c BX A CATHODE w i FIGURE 15 Pin Out Diagram for Model 499ACL VP Sensor top view of connector end of sensor CALIBRATION Zero point Even in the absence of free chlorine the 499ACL 01 sensor generates a small signal called the zero current Failing to correct for the zero current can introduce a bias particularly if the chlorine concentra tion is small lt 0 4 ppm Zero the sensor when it is first placed in service and every time the fill solution is changed To zero the sensor place it in a cup of deion ized or bottled water to which a few pinches of table salt have been added to increase the conductivity Once the sensor current has reached a st2. ANCE MAINTENANCE Periodic maintenance and cleaning are required for best performance of the sensor Generally the membrane and fill solution should be replaced every one to three months If the sensor is being used in water having conductivity less than about 100 uS cm it might be necessary to replace the fill solution but not the membrane more often Sensors installed in harsh or dirty environments require more frequent maintenance The optimum maintenance frequency is best determined by experience PRESSURIZED SPRAY INJURY Before removing the sensor be absolutely certain that the process pressure is reduced to 0 psig and the process temperature is lowered to a safe level CLEANING THE MEMBRANE Keep the membrane clean and free from dirt and algae Clean the membrane with water sprayed from a wash bottle Do not use tissues to clean the membrane REPLACING THE ELECTROLYTE SOLUTION AND MEMBRANE A CAUTION Fill solution may cause irritation May be harmful if swallowed Read and follow manual 1 Unscrew the membrane retainer and remove the membrane assembly and O ring See Figure 16 2 Hold the sensor over a container with the cathode pointing down 3 Remove the fill plug and allow the electrolyte solution to drain out 4 Inspect the cathode If it is tarnished clean it using a cotton tipped swab dipped in baking soda or alumina Use type A dry powder alumina intended for metallographic polishing of medi
3. Instruction Sheet PN 51A 499ACL01 rev K September 2010 Model 499A CL 01 Free Chlorine Sensor For additional information please visit our website at www emersonprocess com raihome liquid A CAUTION A CAUTION Do not exceed pressure and temperature specifications Pressure 65 psig max 549 kPa abs max SENSOR PROCESS APPLICATION COMPATIBILITY The wetted sensor materials may not be compatible a i with process composition and operating conditions Temperature 32 to 122 F 0 to 50 C Application compatibility is entirely the responsibility of the user SPECIFICATIONS SENSOR Pressure 0 to 65 psig 0 to 549 kPa abs Temperature 32 to 122 F 0 to 50 C Process Connection 1 inch MNPT Wetted Parts Noryl 1 Viton 2 platinum polyethersulfone polyester wood silicone 1 Noryl is a registered trademark of General Electric 2 Viton is a registered trademark of DuPont Performance Elastomers SPECIFICATIONS FLOW CELLS Type PN __ Wetted Materials Max Temperature 1 1 2 in tee 23567 00 CPVC Buna N 1 1 2 in socket 122 F 50 C 65 psig 549 kPa abs j 2 _ o o 915240 03 3 4 in NFPT 2 in tee 915240 04 PVC Buna N 1 in NFPT 120 F 49 C 60 psig 515 kPa abs 915240 05 1 1 2 in NFPT 1 o o polyester 316SS 1 4 in OD tubing silicone 24091 01 with Polycarbonate Compression fitting for 158 F 70 C 90 psig 722 kPa abs bubble sweep polyester 316SS 1 4 in OD tubing ing nozzle
4. able low value which takes at least two hours follow the ana lyzer prompts for zeroing the sensor The zero current should between 10 and 10 nA For more information refer to the analyzer manual WIRING TBS ANODE CATHODE i if OY m T Y lt z oe O O a i f j y 2 CONNECT CLEAR SHIELD WIRES TO SOL GND TERMINAL ON TE 2 USE WIRE NUT AND PIGTAIL IF NECESSARY FIGURE 14 Wiring Sensor with Optimum EMI RFI or Variopol Cable to Model 1066 Transmitter When making connections through a junction box PN 23550 00 wire point to point NOTE Use a wire nut and pigtail included when connecting several wires to the same terminal Full Scale Because stable dilute chlorine standards are not available the sensor must be calibrated against the results of a laboratory test run on a grab sample of the process liquid Place the sensor in the flow cell and adjust the sample flow to within the range given in the table on page 2 Also adjust the concen tration so that it is near the upper end of the operating range Once readings are stable follow the analyzer prompts to complete the calibration Be sure taking the sample does not alter flow to the sensor and test the sample immediately after taking it After calibration go to the diagnostics menu and check the sensitivity It should be between 200 and 450 nA ppm For more information refer to the analyzer manual MODEL 499A CL 01 MAINTEN
5. h electrolyte solution Place a drop of electrolyte solution on the cathode then place the membrane assembly over the cathode Screw the membrane retainer in place The sensor may require several hours operating at the polarizing voltage to equilibrate after the electrolyte solution has been replenished MODEL 499A CL 01 MAINTENANCE PRESSURE EQUALIZING PORT CATHODE O RING ELECTROLYTE FILL PLUG MEMBRANE ASSEMALY WHAP WITH PIPE TAPE SENSOR CABLE MEMBRANE RETAINER A wooden ring rests inside the membrane assembly It is not shown in the drawing FIGURE 16 Sensor Parts SPARE PARTS 33523 00 Electrolyte Fill Plug 9550094 O Ring Viton 2 014 33521 00 Membrane Retainer 23501 08 Free Chlorine Membrane Assembly includes one membrane assembly and one O ring 23502 08 Free Chlorine Membrane Kit includes 3 membrane assemblies and 3 O rings 9210356 4 Free Chlorine Sensor Fill Solution 4 oz 120 mL The right people the right answers right now ROSEMOUNT ANALYTICAL CUSTOMER SUPPORT CENTER 1 800 854 8257 Emerson Process Management 2400 Barranca Parkway Irvine CA 92606 USA Tel 949 757 8500 Fax 949 474 7250 http www raihome com Rosemount Analytical Inc 2010 ON LINE ORDERING NOW AVAILABLE ON OUR WEB SITE http www raihome com Specifications subject to change without notice Credit Cards for U S Purchases Only EMERSON Process Ma
6. nagement
7. silicone Pressure and temperature specifications for the low flow cell exceed the temperature and pressure specifications for the sensor ROSEMOUNT Fy Analytical EMERSON Process Management MODEL 499A CL 01 INSTALLATION INSTALLATION Install the sensor in a flowing sample Keep the sample flow ee ie Install sensor within as constant as possible at a value within the limits below 45 of vertical Flow through Open channel Low flow cell PN 24091 01 2 to 3 gph 120 to 190 mL min FIGURE 1 Sensor Orientation UNION COUPLER UNION COUPLER 1 IN NPT 2 PLACES SENSOR BODY MODEL 499A 1 IN NPT 2 PLACES O RING 2 222 1 IN NPT ENSOR BODY FLOW CELL A MODEL 499A ADAPTER ili 1 v gt IN SCHED 80 2 IN SCHED 80 CPVC TEE BODY PVC TEE BODY FIGURE 3 Flow Through 2 in Tee PN 24091 01 has oo bubble sweeping IF nozzle for low flow outlet applications 2 to 3 gph se FIGURE 4 Low Flow Cell PN 24091 00 or 24091 01 MODEL 499A CL 01 WIRING WIRING FIGURE 5 Wiring Sensor with Standard Cable to FIGURE 6 Wiring Sensor with Optimum EMI RFI or Model 1056 and Model 56 Analyzer Variopol Cable to Model 1056 and Model 56 Analyzer FIGURE 7 Wiring Sensor with Standard Cable to FIGURE 8 Wiring Sensor with Optimum EMI RFI or Model 54eA Analyzer Variopol Cable to Model 54eA Analyzer MODEL 499A CL 01 WIRING SOL pH SOL DH N GND GUARD GND GUARD WHI TE RED NOT
8. um and soft metals Rinse thoroughly with water 5 Wrap the plug with one or two turns of pipe tape Remove old tape first 6 Prepare a new membrane Hold the membrane assembly with the cup formed by the membrane and membrane holder pointing up Fill the cup with elec trolyte solution and allow the wooden ring to soak up the solution usually takes several minutes Hold the sensor at about a 45 degree angle with the cathode end pointing up Add electrolyte solution through the fill hole until the liquid over flows Tap the sensor near the threads to release trapped air bubbles Add more electrolyte solution if necessary Place the fill plug in the electrolyte port and begin screwing it in After several threads have engaged rotate the sensor so that the cathode is pointing up and continue tightening the fill plug Do not overtighten Place a new O ring in the groove around the cathode post Cover the holes at the base of the cathode stem with several drops of electrolyte solution Insert a small blunt probe like a toothpick with the end cut off through the pressure equalizing port See Figure 16 NOTE Do not use a sharp probe It will puncture the bladder and destroy the sensor Gently press the probe against the bladder several times to force liquid through the holes at the base of the cathode stem Keep pressing the bladder until no air bubbles can be seen leaving the holes Be sure the holes remain covered wit
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