Emerson Process Management - Emerson Electric Co. Stud Sensor 381 User's Manual
Contents
1. 1 Qv dm ox Wrap Teflon tape on 3 4 inch MNPT threads of cover and on standpipe threads Seal must be water tight Cable gland is not waterproof Do not allow water to accumulate in the stand pipe CAUTION Do not use a pipe wrench on the plastic parts Severe damage could result Attach a 3 14 inch coupling to the sensor Attach electrode shroud to 2 inch MNPT Feed cable through the rigid standpipe Attach the rigid standpipe to 1 inch coupling CAUTION Rigid stand pipe must be water tight cable seal is not waterproof Tighten all fittings and secure the standpipe to minimize sensor movement Use flexible conduit at the top of the rigid standpipe to permit removal of the sensor for periodic maintenance Refer to Section 2 6 and wire the sensor to the transmitter as described 174 1 PLUG MODEL 381pH ORP TIP OF TRIANGLE MUST BE WITHIN HALF CIRCLE CABLE CONNECTOR PREAMPLIFIER 22698 00 OP 22698 02 ASSEMBLED VIEW OP 22698 03 T C ELEMENT CONNECTION P N 3000854 O RING 9550141 LUBRICATE BEFORE OR LIQUID JUNCTION ASSEMBLY WOOD 2000734 CERAMIC 2000735 T C ELEMENT ELECTRODE TIP HOUSING KEEP IN AN UPRIGHT POSITION WHILE REMOVING PLUG AND INSTALL LIQUID JUNCTION A notes 1 4 INCH PLUG REMAINS IN HOUSING WHEN COMBINATION ELECTRODE USED ws e SECTION 2 0 INSTALLATION CABLE 15 50 feet CORD GRP do not remove COVER 22693 00 amp 15ft cable 11812. Cabie 15 50 feet La H to transmitter E 2 i T d 3 4 ich COUPLING CAUTION en Rigid standpipe must be watertight the cable seal 2 is not waterproof CAUTION Two internai O rings must be installed and lubri cated ensure a water tight seal SHROUD FIGURE 2 2 Installation Diagram canle 457 op 1 2 CORD GRIP AND 4 SOn CONDENSATE SEAL Z op 15 2 DO NOT REMOVE BOn 3 4 M NPT S A MNPT CORD GRIP AND CONDENSATE SEAL NOT REMOVE PIPE TEE INSTALLATION STRAIGHT FLOW PIPE INSTALLATION ELBOW FLOW SECTION 2 0 INSTALLATION Use flexible conduit to permit removal periodic maintenance for CABLE 45m 15 2 15 50 CORD GRIP AND CONDENSATE SEAL DO NOT REMOVE aya WP Now SIDE OF TANK INSTALLATION SSS 2 4 5m _ 15 2m CABLE T OR CORD GRIP ARD CONDENSATE SEAL DO NOT REMOVE FIGURE 2 3 Insertion Installation Diagram 3 4 MNPT 2 MNPT 1501 s RAISED FACE FLANGE PIPE LINE INSTALLATION MODEL 381pH ORP 4q FLOw OUT 3 DASH LINES 7 BY CUSTOMER 2 M AL OUT FIGURE 2 5 4 een ad 1 SENSOR 0 RING SHROUD NUT COUPLING O RING FLOW CELL a FLOW IN inch DASH LINES BY CUS
3. 7 2 6 m 7 2 7 Start Up and 14 2 8 Model 391 pHand PAE neis t d 14 2 9 Model 38 T RERO 14 3 0 reuse 15 3 1 erc CL 15 3 2 Periodic Maintenance ioris a a a aaa E a aE ai 15 3 3 Trouble shootlng toe tt 16 3 4 Preamplifier Troubleshooting ccccecesecceceeeeeccceeeeeeeeeceeeneeseeceeensaaeeeeenteaaees 18 3 5 TO Element Maintenance eret er 18 4 0 ULTIRASONIC CEERNER tette esaet enn eene 21 4 1 811 51011 6501 1 10 21 4 2 Specification em eM 21 4 3 asEWnREE ETT 21 44 ede 22 45 22 4 6 Replacement Parts coo lowe Re RR chess XE NER ABRIR n RR 22 5 0 RETURN OF MATERIAL rente ene t Ee eta en e etae ena d eet 25 LIST OF TABLES Table No Title Page 2 1 of Saturated Quinhydrone Solutions in Millivolts 14 3 1 enm nee en nnne 17 3 2 Temperature vs Resistance of Auto TC 18 3 3 Ro amp R4 Val
4. SECTION 3 0 MAINTENANCE Slowly and carefully add 56 2 milliliters of concentrated sulfuric acid Add sufficient water to bring the total solu tion volume up to 1000 ml This standard ORP solution although not as simple to prepare as the quinhydrone recipe is much more stable and will maintain its milli volt value for approximately one year when stored in glass containers This solution ferric ferrous ammoni um sulfate will produce a nominal ORP of 476 20 mV at 25 C when used with a saturated KCI AgCl refer ence electrode and platinum measuring electrode Some tolerance in mV values is to be expected due to the rather large liquid reference junction potentials which can arise when measuring this strongly acidic and concentrated solution However if the measuring electrodes are kept clean and in good operating condi tion consistently repeatable calibrations can be carried out using this standard solution 3 3 2 Cleaning Platinum Electrode The electrode is never exposed to these undesirable compounds In the event poisoning is suspected the electrode can be restored to normal operation by simply cleaning the plat inum electrode with baking soda Polish it by rubbing it with a damp paper towel and baking soda until a bright shiny appearance is attained TABLE 3 1 ORP of Saturated Quinhydrone Solutions pH 4 pH 7 Temperature 20 25 Millivolt Potential 268 264 30 20 25 30 260 94 87 80 16
5. 1003 and 1050 22693 01 amp 15ft coax cable with BNC 1181 22693 02 amp 15ft coax cable without BNC 1181 22693 03 amp 15ft cable 1054A 2054 and 2081 22693 04 amp 50ft cable 1181 1003 and 1050 22693 05 amp 50ft cable 1054A 2054 and 2081 22693 06 amp 15ft coax cable with BNC 1054A 2054 and 2081 BNC CONNECTOR GLASS ELECTRODE GP 22694 00 HIGH 22694 01 RUGG 22694 02 HF RES 22694 03 ORP 22731 00 DOUBLE JUNCTION ELECTRODE 23018 00 O RING 9550128 LUBRICATE BEFORE ASSEMBLY BODY ASSY STD 22692 00 pHE 22692 03 22692 08 O RING LUBRICANT 9220223 FIGURE 2 1 Model 381 Sensor Component Locator Diagram MODEL 381pH ORP 2 3 INSERTION INSTALLATION Code 00 To install the sensor in the side of a tank in a pipeline or a pipe tee proceed as follows see Figure 2 3 CAUTION Sensor must be installed within 80 of the vertical plane see Figure 2 3 1 Use Teflon tape on pipe joint and install sensor as shown in Figure 2 3 CAUTION Do not use a pipe wrench on the plastic sensor parts Severe damage could result Tighten all fittings and sensor 3 Refer to Section 2 6 for wiring instructions If desired the cable may be installed in a con duit Flexible conduit MUST be used at the sensor for a short distance to permit removal for periodic main tenance Use the 3 4 inch MNPT threads on the cover to attach the conduit to the sensor 2 4 FLOW
6. 757 8500 for a Return Materials Authorization RMA number 5 2 WARRANTY REPAIR The following is the proce dure for returning instruments still under warranty Contact the factory for authorization 2 Complete a copy of the Return of Materials Request form as completely and accurately as possible 3 verify warranty supply the factory sales order number or the original purchase order number In the case of individual parts or sub assemblies the serial number on the unit must be supplied 4 Carefully package the materials and enclose your Letter of Transmittal and the completed copy of the Return of Materials Request form If possi ble pack the materials in the same manner as it was received IMPORTANT Please see second section of Return of Materials Request Form Compliance to the OSHA requirements is mandatory for the safety of all personnel MSDS forms and a certification that the instruments have been disinfected or detoxified are required 5 Send the package prepaid to Rosemount Analytical Inc 2400 Barranca Parkway Irvine CA 92606 Attn Factory Repair RMA No Mark the package Returned for Repair Model No _ 5 3 NON WARRANTY REPAIR 1 Contact the factory for authorization 2 Fill out a copy of the Return of Materials Request form as completely and accurately as possible 3 Include a purchase order number and make sure to include the name and telephone number of
7. About This Document This manual contains instructions for installation and operation of the Model 381 pH ORP Sensor The following list provides notes concerning all revisions of this document Rev Level Date Notes A 6 94 1 00 This is the initial release of the product manual The manual has been reformatted to reflect the Emerson documentation style and updated to reflect any changes in the product offering B 5 02 Updated multiple drawings throughout manual C 3 05 Updates D 10 07 Updated page 3 code 00 insertion is no longer available MODEL 381 pH ORP SECTION 1 0 DESCRIPTION AND SPECIFICATIONS SECTION 1 0 DESCRIPTION AND SPECIFICATIONS e MOLDED POLYETHERSULFONE PES BODY provides compatibility with a variety of processes MODULAR DESIGN facilitates maintenance by eliminating terminal and mounting brackets and extraneous hardware INTEGRAL PREAMPLIFIER provides reliable signal transmission DOUBLE JUNCTION GEL FILLED REFERENCE CELL provides high temperature per formance extended service life and resists the effects of pumping dilution and contami nation OPTIONAL FLOW POWERED OR ULTRASONIC CLEANING provides trouble free serv ice in difficult applications 1 1 FEATURES AND APPLICATIONS The Model 381 Sensor measures the pH or the Oxidation Reduction Potential ORP of aqueous solu tions in pipelines open tanks or ponds The sensor is used in most industrial applications including SO2
8. Install a new double junction electrode in the body refer to Table 3 4 Spare Parts Make sure the upper and lower body O ring seal ing surfaces are clean and lubricate the new O rings with O ring lubricant P N 2001928 Install the O rings making sure they are not twisted Install the preamplifier on the body and make sure all connections are secure and that both O rings are in place Install the cover on the body so the threads will engage Rotate the cover until the triangle on the body aligns with or falls within the adjacent mark on the cover CAUTION DO NOT use a pipe wrench on the body or cover Severe damage could result While holding the sensor in an upright position fill the reference chamber in the body through the liquid junction opening with gel solution P N 9210342 Care must be taken to remove as much air as possible from the reference cell Wrap Teflon tape on a new liquid junction see Table 3 4 Spare Parts and install the liquid junc tion in the body Test the sensor per Section 2 7 Install the sensor as described in Section 2 0 NOTE Flow through sensor Codes 03 amp 04 Upper and lower flow cell O rings should be replaced at this time Lubricate new O rings with O ring lubricant P N 2001928 and reinstall sensor as described in Section 2 4 amp 2 5 15 MODEL 381pH ORP 3 3 MODEL 381 3 3 1 Platinum Electrode Check The platinum elec trode may be checked as follows There
9. Process Connections Submersion 3 4 inch MNPT Insertion 2 inch MNPT Flow Through 3 4 inch MNPT Dimensions see Figure 1 1 Measuring Range pH 0 14 1500mv to 1500mV Temperature Compensation Model 381 pH only E required for Model 381 EHE Automatic 0 to 100 C 32 to 212 Pressure Rating 790 kPa abs at 100 C 100 psig at 212 F Cable Four conductor 22 GA each 0 64 mm dia with common shield Weight Shipping Weight 1 0 kg 1 7 kg 2 2 Ib 3 7 Ib 4 5m ser me 2 Viton is a registered trademark of E I du Pont de Nemours amp Co HEASURING N EN 3 ELECTRO x 3 Kynar is a trademark of Elf Atochem North America Inc oum 1 COMPENSATOR JUNCTION HANDRAIL MOUNTING ACCESSORY HANDRAIL MOUNTING ACCESSORY TM 384 175 556 5 15425 23 5 LOCKING PIN ry rh W BEAD CHAIN FLEXIBLE CONDUIT BY OTHERS SENSOR CABLE SENSOR CABLE CUSTOMER 15 FT LG HANDRAIL 2 PLCS 1 3 PULL BOX yy OTHERS 52 a 1 PIPE le BY OTHERS 1 ye PVC PIPE e LOCKING PIN OPTION 1 CLAMP rr SCHED 80 2 PLCS 136 PIPE GUIDE BLOCK 14 2 PIPE CLAMP BY OTHERS amp SPECS LOCKING PLATE 111 CLAMP PLCS 45 SWEEP ELL m 1 EXTENSION PIPE 1 PIPE CLAMP UNISTRUT 1 5 8 x 1 5 8 1 1 3 PLCS ALUMINUM REDU
10. scrubbers rinse tanks plating baths reverse osmosis units and water and waste treatment plants The sensor is housed in a molded PES body and has two O ring seals with breach lock threads which secure the PES cover This provides a waterproof union for long operating life and easy removal for rou tine maintenance The modular body design eliminates the need for internal mounting brackets terminal brackets and screws All components are screw type or plug in place allowing for fast simple service The integral preamplifier amplifies the high imped ance glass electrode signal at the sensor providing a transmission capability of up to three miles The Rosemount Analytical Inc method of preamplification has become the industry standard for reliable pH measurement In submersion applications at tempera tures greater than 80 the preamplifier must be located in a remote junction box A standard feature of the Model 381 is the double junction gel filled reference cell which reduces the need for special applications engineering where unknown reference cell contamination such as sul fides may exist The gel solution maintains its viscosi 1 Teflon is a registered trademark of E I du Pont de Nemours amp Co ty at high temperatures and resists the effect of pumping and dilution resulting in an extended service life A choice of wood Code 20 or ceramic Code 21 liquid junction is available to provide resistance to fou
11. stream are diverted from electrode 2 4 1 Installation Procedures For Low Flow Conditions It is extremely important that the measur ing electrode and liquid junction of any pH ORP sensor remain in contact with the process fluid at all times Under low flow conditions or where flow fluctuations are common sensor contact with the process fluid may be interrupted unless piping procedures are followed to prevent it A customer supplied valve should be installed to elimi nate head pressure when the sensor is being removed from the process This valve may also serve as a grab sample take off point The installation drawing Figure 2 5 shows the recom mended piping procedures for the Model 381 pH ORP sensor in low flow conditions 2 5 FLOW POWERED CLEANER INSTALLATION Code 04 To install the sensor in a flow cell with flow powered cleaner proceed as follows see Figure 2 6 1 Attach the flow cell s 3 4 inch MNPT to sample or process line Note flow direction shown on the side of the flow cell 2 Insert the ring as shown in Figure 2 6 It should snap in place 3 Place the chamber into the flow cell Notch must be aligned for the chamber to go in place Place the Teflon balls 4 each in the chamber 4 Follow Steps 2 through 7 in Section 2 4 for sensor installation into flow assembly see Figure 2 4 2 6 WIRING Connect the wire lugs to the transmitter terminals as shown in Figures 2 7 thru 2 10 MODEL 381
12. CLEANER MODEL 381pH 30 pHE 31 0RP 32 03 OR 04 MINIMUM FLOW RATE REQUIRED IS 2 GPM 710 11 12 15 14 OR 15 20 OR 21 50 51 OR 54 DO NOT EXCEED 6 GPM AS THIS COULO CAUSE ELECTRODE DAMAGE DWG NO 40038105 FIGURE 2 7 Flow Through Diagram and Wiring Code 03 or 04 11 MODEL 381pH ORP SECTION 2 0 INSTALLATION WHEN INCH AND METRIC DIMS ARE GIVEN MILLIMETER E INCH CORD GRIP 00 NOT REMOVE 9 5 MODEL 3 8 5 1054 5 54 3 As a REMOTE J BOX 2054 ORP 54 WITH WITH INTEGRAL PREAMP WIRE COLOR MODEL RED S8teHE 34 3815pH 30 BLACK WIRING DETAILS MODEL 381 31 FOR USE WITH MODEL 2081pH 05 TWO WIRE XMTR Remove pi for service Follow procedures in manual MODIFIED CABLE BY OTHERS SEE INSTRUCTION COAX PREPARATION 2 INCH FOR INSERTION INSTALLATION CUSTOMER INSTRUCTION COAX PREPARATION CUT OFF BNC PLUG THE BLACK JACKET INSULATOR MUST BE STRIPPED BACK FROM THE BRAID PULL BRAID AWAY FROM THE BLACK CONDUCTIVE COATING CUT BACK BLACK CONDUCTIVE COATING 1 inch 25 4mm FROM INSULATOR TWIST BRAID TOGETHER AND CUT 5 inch 12 7mm FROM INSULATOR CUT ORANGE INSULATION ON CENTRAL CONDUCTOR BACK 5 inch 12 7mm AND TIN WIRE SOLDER BUSS WIRE TO BRAID SHIELD AND INSULATED CUT INSULATOR BACK 5 inch 12 7mm AND TIN WIRE NOTES CARE MUST BE TAKEN NOT TO EXPOSE THE INNER INSULATION OF THE COAX CABLE TO ANY FOREIGN MATTE
13. INVOICE AGAINST P O NO NO CONTACT WITH ESTIMATE OF REPAIR CHARGES LETTER 02440 A vuma PHONE NAME ADDRESS RETURN AUTHORITY FOR CREDIT ADJUSTMENT Please check appropriate box s WRONG PART RECEIVED REPLACEMENT RECEIVED DUPLICATE SHIPMENT REFERENCE ROSEMOUNT ANALYTICAL SALES ORDER NO RETURN FOR CREDIT RETURN AUTHORIZED BY WARRANTY DEFECT 24 6047 Emerson Process Management Rosemount Analytical Inc 2400 Barranca Parkway Irvine CA 92606 USA 949 757 8500 949 474 7250 http www RAuniloc com E M E RSO N Rosemount Analytical Inc 2001 Process Management WARRANTY Goods and part s excluding consumables manufactured by Seller are warranted to be free from defects in workman ship and material under normal use and service for a period of twelve 12 months from the date of shipment by Seller Consumables pH electrodes membranes liquid junctions electrolyte O rings etc are warranted to be free from defects in workmanship and material under normal use and service for a period of ninety 90 days from date of shipment by Seller Goods part s and consumables proven by Seller to be defective in workmanship and or material shall be replaced or repaired free of charge F O B Seller s factory provided that the goods parts s or consumables are returned to Seller s designated factory transportat
14. MODEL 381 TABLE 3 1 Troubleshooting SECTION 3 0 MAINTENANCE Meter reads off scale Reference electrolyte depleted Replace reference electrolyte as instructed in Section 3 2 2 Defective preamplifier Check preamplifier as instructed in Section 3 4 and replace preamplifier if defective T C element shorted Check T C element as instructed in Section 3 5 and replace body if defective Electrode not in solution or sample stream is not full Make sure sensor is in solution or that sample stream is full refer to Section 2 0 for installation details Open glass electrode Replace glass electrode Plugged liquid junction Replace liquid junction Recharge reference cell Reference element open no contact Replace reference element Meter reads between 3 and 6 pH regardless of actual pH of solution or sample Electrode cracked Replace electrode Meter indication swings widely in AUTO T C Mode T C element shorted Check T C element as instructed in Section 3 5 and replace body if defective Span between buffers extremely short in AUTO T C mode T C element open Check T C element as instructed in Section 3 5 and replace body if defective Sluggish or slow meter indication for real changes in pH level Electrode coated Clean electrode as instructed in Section 3 2 1 Electrode defective Replace electrode T
15. Repair Model The returned material should be accompanied by a letter of transmittal which should include the following information make a copy of the Return of Materials Request found on the last page of the Manual and provide the following there on 1 Location type of service and length of time of service of the device 2 Description of the faulty operation of the device and the circumstances of the failure 3 Name and telephone number of the person to contact if there are questions about the returned material 4 Statement as to whether warranty or non warranty service is requested 5 Complete shipping instructions for return of the material Adherence to these procedures will expedite handling of the returned material and will prevent unnecessary additional charges for inspection and testing to determine the problem with the device If the material is returned for out of warranty repairs a purchase order for repairs should be enclosed The right people right answers right now ON LINE ORDERING NOW AVAILABLE ON OUR WEB SITE http www raihome com ROSEMOUNT ANALYTICAL CUSTOMER SUPPORT CENTER 1 800 854 8257 Specifications subject to change without notice Credit Cards for U S Purchases Only 4 44 Ere Pa 5 3 5 DNY Emerson Process Management 2400 Barranca Parkway Irvine CA 92606 USA A Tel 949 757 8500 s Fax 949 474 7250 moa
16. are two types of standard solutions which may be used to check the ORP electrode transmitter system Type 1 One type of commonly used ORP standard solution is the saturated quinhydrone solution A com monly used ORP standard solution is a saturated quin hydrone solution This can be made by simply adding a few quinhydrone crystals to either a 4 pH or a 7 pH buffer Quinhydrone is only sightly soluble so only a few crystals will be required The solution will have a yellow color The resulting potentials should be within 20 millivolts of the value shown in Table 3 1 The ORP value of saturated quinhydrone solution is not stable for long periods of time and therefore new solutions should be made each time The solution used during the following check is an acid and should be handled with care Follow the directions of the acid manufacturer Wear the proper protective equipment If con tact with skin of clothing is made immediately rinse with plenty of clean water 2 A second ORP standard solution is the Ferric Ferrous Ammonium Sulfate Solution PN R508 1602Z and it can be ordered as a spare part otherwise it can be prepared from the following recipe Dissolve 39 2 grams of reagent grade ferrous ammonium sulfate Fe NH4 9 SO4 2 6H50 and 48 2 grams of reagent grade ferric ammonium sulfate FeNH4 SO4 2 12H50 in approximately 700 milliliters of water dis tilled water is preferred but tap water is acceptable
17. contact the carrier for instructions The packing container and cushioning material should be retained should it ever become necessary to return the genera tor to the factory Install the ultrasonic cleaner as fol lows 1 Mechanical Installation Although the generator is designed to be located in a process environ ment corrosive atmospheres and excessive vibration should be avoided if possible The ultrasonic transducer is shipped loose along with mounting hardware and mounting instructions Check to make certain all connections are secure Refer to Figure 4 1 and 4 2 for mounting dimensions and select a convenient location for the generator 2 Electrical Installation An external line switch should be installed to disconnect power from the generator for maintenance or periods of non use Apply input power refer to Figure 4 2 as follows Ground to TB1 8 hot to TB1 6 and neutral to TB1 7 CAUTION Make sure the 115 230 jumpers on the transformer are in the proper position for the supply voltage being used The gener ator will be seriously damaged if 230 Vac is supplied with the jumpers in the 115 Vac position The power output is approximately 1400 volts at 0 002 amp at a frequency of 40 to 45 kHz The transducer is supplied with 20 feet of interconnecting cable in a polypropylene protective sheath Output connections are made at TB1 4 for R F and TB1 2 for RF Make sure the AC power line ground is properly con necte
18. equipment as specified in the Installation Instructions of the appropriate Instruction Manual and per applicable local and national codes Connect all products to the proper electrical and pressure sources To ensure proper performance use qualified personnel to install operate update program and maintain the product When replacement parts are required ensure that quali fied people use replacement parts specified by Rosemount Unauthorized parts and procedures can affect the products performance and place the safe operation of your process at risk Look alike substitutions 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 electri cal shock and personal injury DANGER HAZARDOUS AREA INSTALLATION Installations near flammable liquids or in haz ardous area locations must be carefully eval uated by qualified on site safety personnel This sensor is not Intrinsically Safe Explosion Proof To secure and maintain an intrinsically safe installation the certified safety barrier transmitter and sensor combination must be used The installation system must com ply with the governing approval agency FM CSA or BASEEFA CENELEC hazardous area classification requirements Consult your analyzer transmitter instruction manual for details Proper
19. the right individual to be contacted should additional information be needed 4 Do Steps 4 and 5 of Section 5 2 NOTE Consult the factory for additional infor mation regarding service or repair 25 RETURN OF MATERIALS REQUEST IMPORTANTI This form must be completed to ensure expedient factory service RETURN BILL TO 5 040 0 CUSTOMER USER MUST SUBMIT MATERIAL SAFETY SHEET MSDS OR COMPLETE STREAM COMPOSITION AND OR LETTER CERTIFYING THE MATERIALS HAVE BEEN DISINFECTED AND OR DETOXIFIED WHEN RETURNING ANY PROD UCT SAMPLE OR MATERIAL THAT HAVE BEEN EXPOSED TO OR USED IN AN ENVIRONMENT OR PROCESS THAT CON TAINS A HAZARDOUS MATERIAL ANY OF THE ABOVE THAT IS SUBMITTED TO ROSEMOUNT ANALYTICAL WITHOUT THE MSDS WILL BE RETURNED TO SENDER C O D FOR THE SAFETY AND HEALTH OF OUR EMPLOYEES WE THANK YOU IN ADVANCE FOR COMPLIANCE TO THIS SUBJECT 04 mo 4oz amozmo SENSOR OR CIRCUIT BOARD ONLY Please reference where from in MODEL SER NO Column 1 PART NO 1 MODEL PART NO 2 MODEL PART NO 3 MODEL PART NO 4 MODEL PLEASE CHECK ONE REPAIR AND CALIBRATE DEMO EQUIPMENT NO EVALUATION OTHER EXPLAIN REPLACEMENT REQUIRED DESCRIPTION OF MALFUNCTION 2 3 4 R E A 5 N R R E T U R N WARRANTY REPAIR REQUESTED YES REFERENCE ORIGINAL ROSEMOUNT ANALYTICAL ORDER NO CUSTOMER PURCHASE ORDER NO NO PROCEED WITH REPAIRS
20. 0 60 Hz switch selectable Includes mounting hardware and 20 feet of interconnecting cable For submersion service 9200160 Extension cable sensor or remote preamp to analyzer 4 conductor 22 AWG shielded Specify length 22811 00 Flow cell with electrode shroud 22892 00 Flow powered cleaner retrofit kit for use with Code 03 sensors 20 This page left blank intentionally MODEL 381 SECTION 4 0 ULTRASONIC CLEANER SECTION 4 0 ULTRASONIC CLEANER 4 1 ULTRASONIC CLEANER P N 22727 00 This accessory provides an ultrasonic cleaner and mount ing hardware for either continuous or inter mittent cleaning of the measuring electrode and liquid junction on the Model 381 The information in the following paragraph is supplemental to the information in Sections 1 0 thru 3 0 4 2 SPECIFICATIONS The ultrasonic cleaner oper ates on either 115 Vac or 230 Vac 50 60 Hz The mode is jumper selectable within the generator enclosure The generator is shipped in the 115 Vac configuration 4 3 INSTALLATION The ultrasonic generator is shipped with special cushioning material Before open ing the container or removing any packing material all items should be inspected for any possible shipping damage If any damage is found the carrier should be notified Check the generator enclosure for damage to the finish loosen the door clamps and inspect the cir cuit board and components If there is apparent dam age
21. 2731 00 Platinum ORP electrode 22751 00 Qty 5 O ring Viton 2 037 upper body kit 9550141 22751 01 Qty 5 O ring Viton 2 040 lower body kit 9550128 22811 01 Retro fit kit flow powered cleaner 22892 00 Retro fit kit flow powered cleaner 23018 00 Micro junction reference element 32602 00 Flow cell 32605 00 Electrode shroud 32606 00 Coupling nut 32792 00 Shroud modified 04 32793 00 Ring chamber 04 32794 00 Chamber 04 7900058 Gold ORP electrode 14 9210342 KCI Gel reference solution 10 0z 250 ml ALL 9550146 Qty 1 O ring shroud assembly 02 03 04 9550147 Qty 1 O ring flow cell assembly 03 04 TABLE 3 5 Accessories PART NUMBER DESCRIPTION 1000856 Handrail mounting bracket for submersion service For use with Models 1003 amp 1023 1000857 Handrail mounting bracket for submersion service For use with remote NEMA 4X junction box 23296 00 Remote Division 2 junction box for internal preamp for use with Models 1181pH ORP 1050 1060 1003 1023 23296 01 Remote Division 2 junction box for internal preamp for use with Models 1054 1054A 2054pH ORP 2081pH 22996 00 Remote weatherproof junction box for internal preamp 1 22719 02 Remote weatherproof junction box without preamp for cable extension 22727 00 Ultrasonic cleaner with generator 115 VAC 230 VAC 5
22. CING COUPLING x 3 4 n BY OTHERS Wa MNPT i yl HH PN 1000856 MODEL 11275 00 ROTATED FOR CLARITY 3 381pH ORP 02 FIGURE 1 2 Mounting Drawing MODEL 381 pH ORP SECTION 1 0 DESCRIPTION AND SPECIFICATIONS 1 3 ORDERING INFORMATION Model pH ORP Sensor is housed in a PES body suitable for insertion submer sion or flow through installation The sensor includes an integral preamplifier measuring electrode double junc tion gel filled reference cell automatic temperature compensation for pH and a choice of two cable lengths of either 15 ft or 50 ft 4 5 or 15 2 MODEL 381 INSERTION SUBMERSION FLOW THROUGH SENSOR FUNCTION Requires Code 30 Requires Code 32 not for use with 1054 1054A ORP Series Requires Code 31 for use with 1054 1054A 2054 Series and 2081 INSTALLATION Submersion Flow Through Flow Through with Flow Powered Cleaner not available with ORP CODE MEASURING ELECTRODE 10 General purpose pH 11 High pH Electrode requires Code 21 For sodium concentrations greater than 196 or continuous measurement above 11 pH 12 Ruggedized pH Electrode For abrasive solutions 13 Platinum ORP Electrode 14 ORP Electrode 15 HF pH Electrode For HF concentrations less than 100 ppm CODE LIQUID JUNCTION 20 Wood KYNAR Liquid Junction 21 Ceramic KYNAR Liquid Junction COD
23. E TEMPERATURE COMPENSATION 30 Automatic T C 3 0K ohm For Models 1003 1050 amp 1181 pH 31 Automatic T C PT 100 For Models 1054 2054 Series and 2081 32 Automatic T C NOT REQUIRED For Models 1023 1060 and 1181 CABLE 15 ft cable for integral sensor preamp 15 ft coax cable w BNC connector for remote sensor preamp and integral analyzer preamp 1054A 54 2054 54 only 15 ft coax cable w o BNC connector for integral analyzer preamp 1054 1181 43 44 amp 2081 05 only 50 ft cable for integral sensor preamp CODE INTEGRAL PREAMPLIFIER 50 Preamp for Models 1181 pH ORP amp 1050 1060 51 Preamp for Models 1003 1023 52 Preamp NOT REQUIRED 54 for Models 1054 2054 Series and 2081 EXAMPLE This page left blank intentionally MODEL 381pH ORP SECTION 2 0 INSTALLATION SECTION 2 0 INSTALLATION 2 1 INSTALLATION Prepare the sensor for installation as follows see Figure 2 1 1 10 11 Remove the cover from the body by grasping the body and rotating the cover 1 4 turn counter clockwise When the cover breaks loose from the body pull the cover straight out Lubricate the seals of the glass electrode with O ring lubricant Rosemount Analytical P N 2001928 and install the glass electrode in the body Tighten the electrode nut by hand DO NOT use tools CAUTION Do not get lubricant on amber tip of glass electrode It will disrupt the electrical ci
24. Instruction Manual PN 51 381 rev E March 2010 Model 381 pH ORP Sensor 4 ROSEMOUNT _ Analytical Process Management ESSENTIAL INSTRUCTIONS READ THIS PAGE BEFORE PROCEEDING Rosemount Analytical designs manufactures and tests its products to meet many national and international stan dards Because these instruments are sophisticated tech nical products you must properly install use and maintain them to ensure they continue to operate within their normal specifications The following instructions must be adhered to and integrated into your safety program when installing using and maintaining Rosemount Analytical products Failure to follow the proper instructions may cause any one of the following situations to occur Loss of life personal injury property damage damage to this instrument and warranty invalidation Read all instructions prior to installing operating and servicing the product If this Instruction Manual is not the correct manual telephone 1 800 654 7768 and the requested manual will be provided Save this Instruction Manual for future reference If you do not understand any of the instructions contact your Rosemount representative for clarification Follow all warnings cautions and instructions marked on and supplied with the product Inform and educate your personnel in the proper installa tion operation and maintenance of the product Install your
25. OLYPROPYLENE BLACK WITH 2 WIRES LG 20 FT ADAPTER RING 2 FNPT V4 X 3 Ve DIA LEG CPVC Ve DIA X 3716 8 PLACES ULTRASONIC TRANSDUCER 316 SST 1 ULTRASONIC GENERATOR REF DWG 40037505 DWG NO 40038156 FIGURE 4 1 Model 381 Ultrasonic Cleaner and Wiring 23 MODEL 381pH ORP WHEN INCH AND METRIC DIMS ARE GIVEN c MILLIMETER gt INCH GROUND LUG TO DOOR INSIDE RF RF WHITE BLACK OUTPUT TO TRANSDUCERS FRONT VIEW DOOR OMITTED FOR CLARITY CORD GRIP COMPRESSION 2 PLCS 115 230 VAG AC POWER INPUT SECTION 4 0 ULTRASONIC CLEANER DOOR CLAMP 4 PLCS FRONT VIEW WITH DOOR CLOSED 59 2 BOTTOM VIEW WITH DOOR CLOSED 3 INPUT POWER 75 WATTS 2 POWER REQUIREMENTS A 115 VAC 10 SINGLE PHASE 50 60 Hz 230 10 SINGLE PHASE 50 60 Hz 1 OPERATING FREQUENCY 40 KHz DWG NO 40037505 FIGURE 4 2 Dimensional and Component Locator Ultrasonic Generator 24 MODEL 381 SECTION 5 0 RETURN OF MATERIAL SECTION 5 0 RETURN OF MATERIAL 5 1 GENERAL To expedite the repair and return of instruments proper communication between the cus tomer and the factory is important The Return of Materials Request form is provided for you to copy and use in case the situation arises The accuracy and completeness of this form will affect the processing time of your materials Call 1 949
26. R INCLUDING SALTS FROM THE HANDS THIS COULD CREATE A CURRENT LEAK PATH WHICH COULD CAUSE ERRONEOUS READINGS MODEL 2081H 05 AX OMITTED ON MODEL 381CRP 32 SENSOR MEASURING 2 4X J BOX DWG 40038116 c COMPENSATOR EXPLOSION PROOF J BOX DWG 40028115 LIQUID JUNCTION DWG NO REV 40038103 J FIGURE 2 8 Remote Junction Box with Internal Preamp 12 MODEL 381pH ORP SECTION 2 0 INSTALLATION TRANSMITTER MODEL 1 MODEL MODEL MODEL MODEL 1054ApH ORP 1054 11003 1023 1181pH ORP 1050 1060 2054pH ORP i i TB2 Tea MODEL JUNCTION BOX 208 1pH tar LACK MV IN aro sen stun WHITE RTD IN Moneen ssy HH INTEGRAL PREAMP PREAMP PREAMP PREAMP P N 22698 03 1P N 22698 00 22698 02 CUSTOMER CONNECTIONS RECOMMENDED CABLE ROSEMOUNT P N 9200000 BELDEN 8722 DO NOT RUN CABLE NEXT TO LINES ROSEMOUNT SENSOR pH pHE ORP AY REFERENCE NOT USED ON MODEL BE PH ORP N TEMP COMP NOT USED ON MODELS 118 ORP 1050 1023 NOTES UNLESS OTHERWISE SPECIFIED 1054 ORP ANU 1054A PREAMPLIFIER Ma fet TAANSMITTER 08 o Ble PCB 129 85 4 25 PREAMPLIFIER TERMINAL BOARD 18 sa reno JUNCTION BOX NEMA 4x ENCAEREPTACLE SENROR COVER CMITTEO FOR CLARITY 5H eME ORP Ya TTO TRANSMITTER JUNCTION 80x OIV 2
27. SCREW OMITTED FOR CLARITY TEAMINAL 80480 r8 RENE 228 8 116 5 2 MTG HOLES 3 HAC as ig Paar m WHEN INCH AND METRIC DIMS SEALING CONDULET ARE GIVEN AQ NO TO BE Star ormeg CUSTOME Y CUSTOMER MILLIMETER INCH 1 1 i 1 H i Ma PRT Tg SENSOR aera 08 DWG NO DWG NO 40038116 40038115 FIGURE 2 9 Wiring with Weatherproof Div 2 Code 52 Junction Box 13 MODEL 381pH ORP 2 7 START UP AND CALIBRATION 2 8 MODEL 381 pH and pHE 2 8 1 SENSOR PREPARATION Shake down the sensor to remove any air bubbles that may be present at the tip of the pH glass bulb In most cases the pH sensor can simply be installed as shipped and read ings with an accuracy of 0 6 pH may be obtained To obtain greater accuracy or to verify proper operation the sensor must be calibrated as a loop with its com patible analyzer or transmitter WARNING Glass electrode must be wetted at all times in storage and in line to maximize sensor life 2 8 2 CALIBRATION USING BUFFER SOLUTIONS OR GRAB SAMPLES The pH sensor analyzer trans mitter loop may be calibrated by submersing the sensor in a buffer solution standard solutions of known pH val ues or in a process grab sample whose pH value maybe checked by a calibrated laboratory or portable pH meter Please refer to the analyzer s or the trans mitter s respective instruction man
28. THROUGH INSTALLATION Code 03 To install the sensor in the flow cell proceed as follows see Figure 2 4 1 Attach the flow cell s 3 4 inch MNPT to the sample or process line Note flow direction on side of flow cell 2 Holding the sensor with the electrode pointing up seat the upper O ring P N 9550146 flush with the sensor body above the 2 inch MNPT Lubricate with O ring lubricant P N 2001928 3 With the coupling nut thread in place thread the electrode shroud onto the sensor body see Figure 2 4 insuring that the O ring is properly seated and does not become pinched or twisted NOTE The coupling nut must be inserted between the lower body assembly of the sensor and electrode shroud see Figure 2 4 4 Next place the lower O ring P N 9550147 in the flow cell and lubricate with O ring lubricant P N 2001928 5 Place sensor coupling nut and electrode shroud in the flow cell Insure that the O ring is seated prop erly 6 Rotate sensor until the key on electrode shroud drops into either the open flow or guarded flow position 7 Tighten the coupling nut and the flow cell fittings SECTION 2 0 INSTALLATION NOTE Electrode shroud and coupling nut should be hand tightened only Do not use a wrench When tightening process or sample line connectors to the flow cell do not use a pipe wrench on the flow cell Severe dam age may result n guarded flow position solid particles in the flow
29. TOMER Installation Details Low Flow Conditions Model 381 Code 03 and 04 SECTION 2 0 INSTALLATION MODEL 381pH ORP SECTION 2 0 INSTALLATION O RING 95501461 COUPLING NUT MODIFIED SHROUD FLOW POWERED CLEANER CHAMBER TEFLON BALL 4 REQUIRED O RING 9550147 FLOW POWERED CLEANER lt FLOW IN PRESSURE DROP AND RECOMMENDED FLOW RATES FLOW POWERED CLEANER CODE 04 kPa dd 10 POSSIBLE ELECTRODE DAMAGE ABOVE THE THIS POINT PART NO DESCRIPTION 22892 00 2001928 LUB O RING RECOMMEND ED OPERATING RANGER 22123 00 KIT BALLS CLEANER 32602 00 1 FLOW CELL 22222222 32 606 00 i Corte 32792 00 1 SHROUD MODIFIED X PRESSURE DROP 32793 00 RING 32794 00 1 CHAMBER 9550146 1 O RING 2 229 viTON X 8550 47 1 O RING 2 232 VITON INEFFECTIVE CLEANING BELOW 12345 67 8 gpm 60 X 5 10 15 20 25 30 FLOW RATE FIGURE 2 6 Retro Fit Kit Code 04 Flow Powered Cleaner Model 381 10 MODEL 381 SECTION 2 0 INSTALLATION WHEN INCH AND METRIC DIMS ARE GIVEN lt MILLIMETER INCH 4 50 15 2 CABLE OR CORD GRIP 00 NOT REMOVE TRANSMITTER MODEL 1084ApH ORP OR 1 2054pH ORP SENSOR 22698 00 PREAMP 22698 02 WIRING DETAILS CUSTOMER CONNECTIONS FLOW CELL ASSY 3 4 MNPT TYP 4e INLET N N MODEL 381 SENSOR WITH FLOW POWERED
30. d to the generator s input terminals CAUTION Do not run any ultrasonic cleaner power wiring input or output in the same conduit as the signal wiring from the sensor 4 4 OPERATION Submerge the sensor into sample and start the sensor as instructed in Section 2 0 After measuring system is in operation apply AC power to the ultrasonic cleaner Over a period of time usually several days gradually increase the gain until the power setting is sufficient to keep the electrodes free of process buildup CAUTION Increase gain slowly and apply only the necessary amount of power Excessive power may damage the electrode Once initial start up is complete further adjust ment or calibration is not normally required unless there are drastic changes in the composition of the process sample 21 MODEL 381pH ORP 4 4 Operation continued 22 NOTE When the ultrasonic cleaner is used on some slurry applications such as car bon ates and phosphates continuous ultra sonic cleaning is not recommended as this may tend to compact the solids of the slur ry on the electrode into a hard cement like coating Instead it is recommended that a shock type treatment be applied i e for every three hours of operation employ 30 minutes of ultrasonic cleaning The inter val and duration of the cleaning as well as the power setting utilized are determined by the individual application Factors such as the concentration of carbonates o
31. e for a 3K and Pt 100 element and can be determined according to Table 3 2 or the following formula Rr Rg l R4 T 20 Where Resistance T Temperature in Refer to Table 3 3 for Rg and R4 values TABLE 3 3 and R4 VALUES FOR TEMPERATURE COMPENSATION ELEMENTS Temperature 0045 00385 Compensation Element 3K 2934 PT 100 107 7 MODEL 381pH ORP SECTION 3 0 MAINTENANCE TABLE 3 4 Model 381 Spare Parts RECOMMENDED PART NUMBER DESCRIPTION CODE QUANTITY 2000734 Liquid junction wood Kynar 2000735 Liquid junction ceramic Kynar 2001928 O ring lubricant 22692 00 Body Uniloc standard T C 22692 03 Body Pt100 T C 22692 06 Body w o T C 22693 00 Cover for integral preamp w 15 ft cable 22693 01 Cover for remote preamp w 15 ft coax 22693 02 Cover for remote preamp w 15 ft coax no BNC 22693 03 Cover for integral preamp w 15 ft cable Model 1054 2054 Series 22693 04 Cover for integral preamp w 50 ft cable 22693 05 Cover for integral preamp w 50 ft cable Model 1054 2054 Series 22693 06 Cover for remote preamp w 15 ft coax w BNC Model 1054 2054 Series 22694 00 General purpose pH electrode 22694 01 High pH electrode 22694 02 Ruggedized pH electrode 22694 03 HF resistive pH electrode 22698 00 Preamplifier Models 1003 pH and 1023 ORP 22698 02 Preamplifier Models 1181 pH ORP 1050 pH 1060 ORP 22698 03 Preamplifier Models 1054 2054 Series 22723 00 Kit cleaning balls 2
32. f the electrode tip 2 If the electrode tip is coated clean it with a soft clean cloth or tissue moistened with a mild non abrasive detergent and rinse the electrode tip with clean water Detergents may be used to remove oil and grease coatings 3 If Step 2 does not clean the electrode tip remove the electrode and clean it with a dilute O 1 hydrochloric acid solution and rinse with clean water HCI may be used to remove thin film and scale coatings not removed with a damp cloth or detergents 4 Check calibration and install the sensor in the process as instructed in Section 2 0 3 2 2 Annually Perform the following maintenance annually not required for combination electrode 1 Remove the sensor from the process 2 While holding the sensor in an upright position remove and discard the liquid junction 3 Drain the solution from the sensor body and rinse the inside of the body with clean warm water 4 Remove the cover from the body by grasping the body and rotating the cover 74 turn in the counter clockwise direction 5 When the cover breaks loose from the body pull straight out on the cover and disconnect the cable connector from the preamplifier 6 Disconnect the electrode BNC connector from the preamplifier and then unplug the preamplifier from the body 10 11 12 13 14 15 16 Remove and discard the double junction elec trode Remove and discard the O rings on the body
33. installation operation and servicing of this sensor in a Hazardous Area Instal lation is entirely the responsibility of the user CAUTION SENSOR PROCESS APPLICATION COMPATIBILITY The wetted sensor materials may not be compatible with process com position and operating conditions Application compatibility is entirely the responsibility of the user Emerson Process Management Rosemount Analytical Inc 2400 Barranca Parkway Irvine CA 92606 USA Tel 949 757 8500 amp 949 474 7250 women Rosemount Analytical Inc 2001 Process Management MODEL 381 pH ORP TABLE OF CONTENTS MODEL 381 pH ORP SENSOR TABLE OF CONTENTS Section Title Page 1 0 DESCRIPTION AND 1 1 1 Features and Ab plications te tn Ree RE o 1 1 2 5 amp 2 2 1 3 Ordering Information vated 3 2 0 INSTABIATION 5 2 1 installation EI 5 2 2 Submersion Installation Code 02 5 2 3 Insertion Installation Code 00 nmm 7 24 Flow Through Installation Code 03 sss 7 2 5 Flow Powered Cleaner Installation Code 04
34. ion charges prepaid within the twelve 12 month period of warranty in the case of goods and part s and in the case of consumables within the ninety 90 day period of warranty This warranty shall be in effect for replacement or repaired goods part s and consumables for the remaining portion of the period of the twelve 12 month warranty in the case of goods and part s and the remaining portion of the ninety 90 day warranty in the case of consumables A defect in goods part s and consumables of the commercial unit shall not operate to condemn such com mercial unit when such goods parts s or consumables are capable of being renewed repaired or replaced The Seller shall not be liable to the Buyer or to any other person for the loss 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 STATED EXPRESS WARRANTY NO OTHER WARRANTIES ARE GRANTED INCLUDING BUT NOT LIMITED TO EXPRESS AND IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE RETURN OF MATERIAL Material returned for repair whether in or out of warranty should be shipped prepaid to Rosemount Analytical Inc Uniloc Division 2400 Barranca Parkway Irvine CA 92606 The shipping container should be marked Return for
35. ling and subsequent loss of electrical contact between the reference electrode and process fluid In flow applications where crystalline or viscous coat ings such as calcium carbonate or petroleum oils may coat the electrode surfaces and impede the sen sor s performance the flow powered cleaning option Code 04 may be used A specially designed flow chamber directs the process fluid in a circular path carrying three Teflon balls which clean the electrode surface physically preventing accumulation of coating materials Flow powered cleaning is suitable for all hazardous area applications In submersion Code 02 applications the ultrasonic cleaning option may be specified This assembly includes the ultrasonic transducer and generator mounting hardware and 20 ft of interconnection cable Ultrasonic cleaning is not suitable for haz ardous area applications The Model 381 is compatible with all Rosemount Analytical pH ORP analyzers For use with the 1054 2054 Series 2081 and other pH analyzers which utilize a PT 100 automatic temperature com pensator order the Model 381 pHE MODEL 381 pH ORP SECTION 1 0 DESCRIPTION AND SPECIFICATIONS 1 2 SENSOR SPECIFICATIONS Materials of Construction Body Cover and Flow Cell Polyethersulfone PES 00 NOT REMOVE O Rings Viton2 Measuring Electrode Glass and platinum for 3 Model 381 ORP ES D T Liquid Junction Kynar3 wood Code 20 or Kynar ceramic Code 21
36. ndication is not as specified in Step 5 proceed to the transmitter instruction manual for further troubleshooting If the transmitter is opera ble with the preamplifier bypassed then the pre amplifier is defective Unplug the preamplifier from the body 8 Plug a new preamplifier into the body 9 Plug the BNC connector of the glass electrode into the preamplifier 10 Make sure all O rings are clean lubricated and in place 11 Plug the cable connector into the preamplifier making sure the cable is towards the center of the body 12 Install the cover on the body so that the threads engage 13 Rotate the cover until the triangle on the body aligns with or falls within the adjacent mark on the cover CAUTION DO NOT use a pipe wrench on the body or cover Severe damage could result 14 Install the sensor as described in Section 2 0 18 SECTION 3 0 MAINTENANCE TABLE 3 2 TEMPERATURE vs RESISTANCE OF AUTO T C ELEMENT Resistance Ohms 1 3K PT 100 2670 100 0 2802 103 8 2934 107 7 3000 109 6 3066 111 5 3198 115 4 3330 119 2 3462 123 1 3594 126 9 3726 130 8 3858 134 6 3990 138 5 Temperature C 3 5 T Automatic Temperature Compensator The temper ature compensator element is temperature sensitive and can be checked with an ohmmeter Resistance increases with temperature The 3K element will read 3000 ohms 1 at 25 C 77 F and a Pt 100 will read 110 ohms Resistance varies with tem peratur
37. r phosphates flow velocities temperature etc must all be considered Output Power Adjustment The output power adjustment on the ultrasonic generator is located on the powerstat The powerstat is adjusted with the knob marked as PS Refer to Figure 4 2 and determines the cleaning efficiency of the unit by adjusting the power input of the generator Proper adjustment is made by turning the powerstat knob counter clockwise minimum power position and gradually increasing the power by turning the knob clockwise until the power is sufficient to keep the electrode clean This is usually accom plished over a period of several days SECTION 4 0 ULTRASONIC CLEANER 4 5 MAINTENANCE The ultrasonic cleaner should operate continuously with the exception of carbonate and phosphate slurries and requires no maintenance calibration or adjustment except that the power adjustment should be as low as possible consistent with good cleaning action The ultrasonic transducer is completely sealed and should not be operating while troubleshooting the sensor or transmitter 1 Troubleshooting In case problems arise in the functioning of either the generator or the trans ducer the entire assembly should be returned to the factory for servicing No electronic repair work of any kind should be attempted in the field or the warranty will be voided Whether the unit is still under warranty or not field troubleshooting is not recommended and Ro
38. ransmitter cannot be standardized Electrode coated or cracked Clean electrode as instructed in Section 3 2 1 and if cracked replace electrode Reference chamber is contaminated Replace gel solution as instructed in Section 3 2 2 Defective preamplifier Check preamplifier as instructed in Section 3 4 and replace if defective If trouble still persists micro junction electrode is defective Replace micro junction electrode Meter short spans Old glass electrode greater than 1 year use Replace electrode Coated glass Clean with soft cloth and clean water 17 MODEL 381pH ORP 3 4 PREAMPLIFIER TROUBLESHOOTING To deter mine if the preamplifier is operable proceed as follows 1 Remove the sensor from process 2 Remove the cover from the body by grasping the body and rotating the cover 1 4 turn in the count er clockwise direction 3 When the cover breaks loose from the body pull straight out on the cover to expose the com ponents attached to the body and disconnect the BNC connector from the preamplifier leaving the cable connected Inspect the internal preamplifier area for signs of moisture or corrosion moisture can short out the preamplifier Dry all parts thor oughly before testing 4 Short the center pin of the BNC on the preamp lifi er to the outside of the BNC connector 5 The meter indication should be approximately center scale 7 pH 6 If the meter i
39. rcuit path Make sure the double junction electrode is thread ed tightly Plug the preamplifier or remote connector onto the T C and reference electrode pins Connect the BNC connector from the glass elec trode to the preamplifier Install the body O rings Make sure they are clean and not twisted Make sure the covers mating sur faces faces are clean NOTE Both body O rings must be installed and lubricated to ensure a water tight seal Failure to seal the body properly will result in water damage in insertion applications Lubricate the body O rings with O ring lubricant P N 2001928 Plug the cable connector to the preamplifier mak ing sure the cable is toward the center of the body Install the cover on the body so that the threads will engage Rotate the cover until the triangle on the body aligns with or falls within the adjacent mark on the cover 12 13 IMPORTANT While holding the sensor in an up side down posi tion see Figure 2 1 remove the 1 4 inch plug from the electrode tip end of the sensor Install the liquid junction in place of the 1 4 inch plug using Teflon tape on the liquid junction threads CAUTION DO NOT use pipe joint compound or pipe dope on the threads of the liquid junction The electrical circuit will be disrupted if the liquid junction is contaminated 2 2 SUBMERSION INSTALLATION Code 02 To install the sensor in process proceed as follows see Figure 2 2
40. ren Rosemount Analytical Inc 2010 Process Management
41. semount Analytical cannot be liable for operation or safety of equipment that has been repaired or modified by persons other than its factory or their trained and authorized Field Engineers If your unit s warranty has expired and field troubleshooting is still desired waveforms frequency and voltages can be obtained directly from Branson Ultrasonic Eagle Road Danbury CT 06810 203 796 0400 The circuit is fundamentally identical for both the old and new version 4 6 REPLACEMENT PARTS The ultrasonic generator may be ordered as a unit P N 22990 00 The ultra sonic transducer is a sealed unit and cannot be conve niently repaired in the field While it is not likely that the transducer will fail electrically or mechanically certain process streams may contain corrosive compounds which in time could attack and ultimately destroy the 316 Stainless Steel faceplate The number of spare transducers P N 2001463 needed on hand as replacement stock should be determined on an indi vidual basis with regard to specific application condi tions MODEL 381pH ORP WHEN INCH AND METRIC DIMS ARE GIVEN c MILLIMETER INCH SECTION 4 0 ULTRASONIC CLEANER WIRING DETAILS re2 rg ware B 51 GREEN BLACK RED a SHIELD 1054 5 181 1050 1003 2054 eH TRANSMITTER 3 4 INCH WHITE Te1 2 TO ULTRASONIC NC BLACK 1 4 GENERATOR TUBING P
42. tandard solution Allow 1 2 minutes for the ORP sensor to stabilize Adjust the standardize control of the instrument to the solution value shown in Table 2 1 The resulting potentials measured with a clean platinum electrode and saturated KCI AgCl reference electrode should be within 20 millivolts of the value shown in Table 2 1 Solution temperature must be noted to insure accurate interpretation of results The ORP value of saturated quinhydrone solution is not stable over long periods of time Therefore these standards should be made up fresh each time they are used TABLE 2 1 ORP of Saturated Quinhydrone Solution In Millivolts pH 4 Solution pH 7 Solution Temp C Millivolt Potential 20 25 30 20 25 30 268 264 260 94 87 80 Remove the sensor from the buffer rinse and install in the process MODEL 381 SECTION 3 0 MAINTENANCE SECTION 3 0 MAINTENANCE 3 1 GENERAL This section provides instructions for performing periodic maintenance and for determining the cause of a malfunction troubleshooting 3 2 PERIODIC MAINTENANCE The following period ic maintenance is based on operation in a water sam ple Determine the schedule for the operation being maintained from past experience or by analyzing data gathered since initial installation of the sensor 3 2 1 Monthly Perform the following maintenance monthly 1 Remove the sensor from the solution or sample and observe the condition o
43. uals for proper calibration procedures 2 9 MODEL 381 ORP 2 9 1 MODEL 396P ORP Most industrial applications have a number of ORP reactions occurring in sequence or simultaneously There can be several components that are oxidized or reduced by the reagents that are used Theoretically the ORP poten tial is absolute because it is the result of the oxidation reduction equilibrium However the actual measured potential is dependent on many factors including the condition of the surface of the ORP platinum elec trode Therefore the sensor should be allowed 1 2 hours to become conditioned to the stream when first set up or after being cleaned 14 SECTION 2 0 INSTALLATION 2 9 2 Calibration The solution used during the following check is an acid and should be handled with care Follow the directions of the acid manufactur er Wear the proper protective equipment Do not let the solution come in contact with skin or clothing If contact with skin is made immediately rinse with clean water Make a temporary electrical connection between the sensor and the instrument Obtain a standard solution of saturated quinhydrone PN 508 1604 This can also be made quite sim ply by adding a few crystals of quinhydrone to either pH 4 or pH 7 buffer Quinhydrone is only slightly sol uble therefore a few crystals will be required Refer to Section 4 3 for an alternate ORP standard solu tion Immerse the sensor in the s
44. ues for Temperature Compensation Elements 18 3 4 Model 381 Spare ii cr rer eher petes N 19 3 5 1 19 MODEL 381 pH ORP TABLE OF CONTENTS MODEL 381 pH ORP SENSOR LIST OF FIGURES Figure No Title Page 1 1 Dimensional Drawing ssseeneenne eene nennen nene 3 1 2 Mounting Drawing 1 zucca ccce nece vn aa ce vaca ceca ce 3 2 1 Model 381 Sensor Component Locator 6 2 2 Submersion Installation Diagram 8 2 3 Insertion Installation Diagram ssseseen mem 8 2 4 Flow Through Installation Diagram Code 03 or 04 9 2 5 Installation Details Low Flow Conditions Model 381 Code 03 04 9 2 6 Retro Fit Kit and Code 04 Flow Powered Cleaner Model 381 10 2 7 Flow Through Diagram and Wiring Code 03 04 11 2 8 Remote Junction Box with Internal Preamp 12 2 9 Wiring with Weatherproof or Div 2 Code 2 Junction Box 13 4 1 Model 381 Ultrasonic Cleaner and Wiring sse 23 4 2 Dimensional and Component Locator Ultrasonic 24
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