4905 Style Conductivity Cells for 04905 Series and DL4
Contents
1. FveRint Temind Fach Temirel Wil Accent Mx 8 8 1000 ft mex Nie3 Z D an AES f B GHFEENHIDI i E a WHTE TC C S Irteral Call Assenrbiy iud Sk Niet a iue wx Analyzer Input Comections NOTES 1 12 For pure water samples in non conductive plastic glass etc piping ground the black cell electrode lead near the cell Alternatively connect to the 7082 ground screw as shown dotted Do not ground 10 25 or 50 constant cells 9782C SO xx Exxxx BD Standard Range Only Use 18 gage minimum coaxial cable type RG6 U connecting shield to terminal SH only 9782C S0 xx EOOOO BD For cable runs of up to 500 ft use 18 gage minimum three conductor cable For cable runs of 500 1000ft use 16 gage minimum three conductor cable 9782C WO xx EOOOO BD coax and shield SH not used For cable runs of up to 500 ft use 18 gage minimum three conductor cable For cable runs of 500 1000ft use 16 gage minimum three conductor cable Cell to analyzer cables are considered low level Run separate from high level wiring If 2 cells are to be applied the same wiring guidelines are applied to Cell 2 as are followed for Cell 1 Figure 3 6 4905 Series Cell with Junction Box Head Connected to 9782 Conductivity Resistivity Analyzer2. Coax Cable Belden 92290 18 AWG ee Up to 1000 ft Four conductor 3 used 16 gage cable Belden 9494 834055 Coax Cable Belden 9259 22 AWG 835024 Coax Cable Belden 92290 18 AWG ee 9782 Wide Ranges Up to 500 ft Four conductor 18 gage 834052 Up to 1000 ft Four conductor 16 gage 834055 DirectLine DL423 Remote Connector 51500768 004 18 4905 Series Conductivity Cells Installation and Maintenance 6 04 Honeywell Industrial Measurement and Control Honeywell Inc 1100 Virginia Drive Fort Washington Pennsylvania 19034 70 82 25 18 0604 Printed in USA www honeywell com imc
3. 1 0 1 and 0 01 constant cells have a removable cell guard which is screwed onto the cell body to protect the electrode surfaces Electrodes are three disks on the 1 constant cell parallel plates on the 0 1 constant cell and wire wound on the cell body on the 0 01 constant cell Cells must be used with the guard in place or the cell constant may differ from that specified Most of the auxiliary parts which enable the user to achieve the various types of mounting are readily obtained from local suppliers For an immersion mounting with 04905 Series cells only the appropriate length of 1 2 inch pipe e g CPCV and if desired a 1 2 inch end coupling is needed For an in line flow mounting only a 1 schedule 40 tee is required The basic cell can be converted to a flow cell for either bypass or in line arrangements by use of the PES flow cell housing Honeywell Part 276127 shown in Figure 3 1 and Figure 3 3 However the temperature and pressure specifications listed for this flow chamber under Specifications apply ATTENTION The DL4 5xx Series DirectLine cells have a EEPROM device for automatic download of cell constant and cell calibration factor During installation proper ESD protection is required so the memory device is not damaged 3 2 Types of Mounting The three types of mounting Flow Immersion and Insertion are illustrated in Figure 3 1 Mounting dimensions for each type of cell assembly are given in Figure 3 3 Figure 3 4 and F
4. 3 10 Integral DirectLine Mounting with DL4 5xx 15 Figure 3 11 Remote DirectLine DL4 5xx series with 20 lead connected to a DL423 Modbule through the use of the Remote Connector Assembly 16 6 04 4905 Series Conductivity Cells Installation and Maintenance v vi 4905 Series Conductivity Cells Installation and Maintenance 6 04 Introduction 1 Introduction 1 1 Overview These cells form the sensing network for industrial analyzers and transmitters designed to make continuous measurements of electrolytic conductivity The cells are primarily suited to measurements in effluents of ion exchangers and distillation columns but appropriate constants are provided for many other applications including measurements in micro electronic component washing and plating rinse effluents Universal in mounting any of the cells can be arranged for immersion except DL4000 Series insertion 1 NPT or flow type sampling The latter can be achieved by use of a CPVC flow housing a 1 pipe tee schedule 40 or 1 1 4 plastic tee schedule 80 installed in a process line or bypass line as pictured in Figure 1 1 ell Assembly Adapter Bushing Schedule 80 1 1 4 Pipe Tee Guard Tube on Cell aln 23381 Figure 1 1 4905 Type Conductivity Cell Mounted in a 1 1 4 Schedule 80 Tee Using an Adapter Bushing ATTENTION Please note that specific parameters of your process may prohibit the use of nickel eleme
5. 4905 Series Conductivity Cells Installation and Maintenance 6 04 6 04 RED Temp Comp L__ GREEN WHITE Cell BLACK Five Point Terminal Board Each Terminal Will Accept 16 Gage Max Wire Installation Cell cable is approx 0 250 6 4mm O D max with 4 conductors of 18 AWG wire 7 or 20 foot length Direct Cell to Analyzer Installation H Black E C sH 8 6 4 Temp Note 3 20 ft max a S R Compensator Spb 1 Temp 8 R Compensator A H Red JY 2 Green amp W cen 2 Note 5 C amp k _ Electrodes W Cell 1 k Jj Electrodes 12 Note In M Conductivity Resistivity Analyzer Analyzer Input Connections GND NOTES For pure water samples in non conductive plastic glass etc piping ground the black cell electrode lead near the cell EN connect to the 7082 ground screw as shown dotted Do not ground 10 25 or 50 constant cells Use 22 3 9782C For cabl For cba 9782C For cabl For cab ou 20 ft max 1000 ft max d sH Note 5 T Note 3 8c 2 Temp POS Compensator J ee
6. Sample outlet 3 4 NPT female Cell inlet 1 NPT female Polyethersulfone PES 4905 Series Conductivity Cells Installation and Maintenance Manual 2 2 Model Selection Guides 4905 Series for use with 9782 Series or APT Series Instructions Consult Steps to Selecting Appropriate Conductivity Instrumentation and Cells before making selections below Section 2 INTRO Select the desired key number The arrow to the right marks the selection available Make one selection from each Table using the colum below the proper arrow A dot denotes unrestricted availability Key Number l Il I IV V VI papi a e eta e pt ta en KEY NUMBER Description Selection Availability 04905 Conductivity Cell__________________ _04905_ _ y TABLE CELL CONSTANT TABLE ll ELECTRODE MATERIAL Nickel Note 1 33 Platinum Note 1 44 TABLE Ill AUTOMATIC TEMPERATURE COMPENSATION For APT2000 4000CC 9782C or 7082 Only 333 TABLE IV Leadwire Length 7 20 ft 6 10 meters Leadwire Note 2 20 sepor enui Universal Head Aluminum X1 TABLE V Special Insertion Lengths None 4 4 in 111 76 mm extra 8 8 in 223 52 mm extra Special Insertion Length 4 4905 Series Conductivity Cells Installation and Maintenance 6 04 Specifications and Model Selection Guide TABLE VI OPTIONS None Tagging Linen Stainless Steel Certificate of Calibration amp Conformance Note 1 Platinum is used in acid and bas
7. 905 Series Conductivity Cells Installation and Maintenance 6 04 Specifications and Model Selection Guide 2 Specifications and Model Selection Guide 2 1 Specifications Cell Constant Electrode Material Maximum Pressure Limit Maximum Continuous Temperature Limit Mounting Insertion Flow Chamber Insertion Depth Overall Length Materials of Construction Wetted Parts Leadwire Weight Specifications for 276127 Flow Chamber 6 04 Max Flow Max Pressure Max Temperature Dimensions Material 4905 Series Conductivity Cells Installation and Maintenance 04905 Series 0 01 0 1 1 0 10 and 50 as specified DL4 5xx 0 1 10 50 as specified Nickel or platinum as specified 250 psig 1724 kPa 140 C 284 F 140 C 284 F 1 NPT male Schedule 40 Inlet 3 4 NPT Male Outlet 3 4 NPT Female 5 to 7 127 to 178 mm depending on cell constant Approximately 6 to 8 152 to 203 mm or 10 to 12 1 4 254 to 311 mm if universal head is used Cell body PES Polyethersulfone Electrodes nickel or platinum Tefzel covered 18 gage cable 0 177 4 55 mm OD at lengths listed Approximately 1 lb 0 45 kg or 3 lb 1 35 kg if universal head is used 2 gpm Y 40 psig and atmospheric discharge 200 psig at 25 C 140 C 284 F at atmospheric pressure 1 1 2 3 8 cm octagon x 8 3 4 22 2 cm long Sample inlet 3 4 NPT male
8. APT2000 14 4905 Series Conductivity Cells Installation and Maintenance 6 04 6 04 Electronics Module Locking Screw in 1 Rear of Housing Cell Bu ae Figure 3 10 Integral DirectLine Mounting with DL4 5xx 4905 Series Conductivity Cells Installation and Maintenance Installation 15 4905 Series Conductivity Cells Installation and Maintenance Manual Electronics Module Conductivity Cell Remote Connector Black Protective Sleeve do not remove oo o o Cover ise ond SES Strain Relief Compression Cap Na JU Remote Wiring Cable T Cell Remote Electronics Module for Conductivity Cells Figure 3 11 Remote DirectLine DL4 5xx series with 20 lead connected to a DL423 Modbule through the use of the Remote Connector Assembly 4905 Series Conductivity Cells Installation and Maintenance 6 04 Maintenance 4 Maintenance 4 1 Introduction If abnormal readings occur this may indicate poor response because the cell is not filled with process solution Check the cell installation Note that a grayish dull surface on the cell plastic normally glassy can result from exposure to temperatures above 140 C The only maintenance which may be required is occasional cleaning in certain applications Cell constants 0 01 0 1 and 1 cannot b
9. E ei QR EE 2 6 88 1 Temp Black Q K amp R _ Compensator White W S ES cen 2 Note 5 Junction Box Note 2 amp k jJ Electrodes Coax Cable Y O S W cel 1 i S Electrodes Cell to Analyzer Through Junction Box Note 3 Note 1 7 4 Conductivity Resistivity pm Analyzer GND SO only gage minimum coaxial cable type RG59 U connecting shield to terminal SH only le runs of up to 500 ft use 18 gage minimum three conductor cable le runs of 500 1000 ft use 16 gage minimum three conductor cable WO coax and shield SH not used le runs of up to 500 ft use 18 gage minimum four conductor cable le runs of 500 1000 ft use 16 gage minimum four conductor cable Cell to analyzer cables are considered low level Run seperate from high level wiring If 2 Cells are to be applied the same guidelines are applied to Cell 2 as wereused for Cell 1 Analyzer Input Connections aln 23346 Figure 3 7 04905 Series Cells with 7 or 20 Foot Leads Connected to 9782 Conductivity Resistivity Analyzer or Connected to Junction Box 4905 Series Conductivity Cells Installation and Maintenance 13 4905 Series Conductivity Cells Installation and Maintenance Manual 2 electrode cond sensor temp 1 Figure 3 8 04905 series cells with 20 leads connected to an APT4000 2 electrode conductivity cell temp l zv shield n c T2 Figure 3 9 04905 series cells with or 20 leads connected to an
10. Honeywell 4905 Style Conductivity Cells for 04905 Series and DL4 5xx DirectLine Series Installation and Maintenance Manual 70 82 25 18 Rev 3 6 04 Copyright Notices and Trademarks Printed in U S A Copyright 2004 by Honeywell Inc Revision 3 6 04 While this information is presented in good faith and believed to be accurate Honeywell disclaims the implied warranties of merchantability and fitness for a particular purpose and makes no express warranties except as may be stated in its written agreement with and for its customer In no event is Honeywell liable to anyone for any indirect special or consequential damages The information and specifications in this document are subject to change without notice Honeywell Industrial Measurement and Control 1100 Virginia Drive Fort Washington PA 19034 4905 Series Conductivity Cells Installation and Maintenance 6 04 About This Document Abstract This document is intended to support the installation operation and maintenance of the 4905 Series of Conductivity Cells Revision Notes The following list provides notes concerning all revisions of this document Rev ID Date Notes 0 12 96 This document is the initial Honeywell release of the L amp N manual p n 177667 Rev M2 There has been no significant changes made to this manual The format has been changed to reflect the Honeywell layout 1 6 99 Edits done to add new Model Selection Guide information an
11. ads See Section 4 4 The cell must be covered by the solution at all times Therefore make certain the lowest solution head is higher than the cell location See that an air bubble does not prevent the cell from filling properly Flow cell housing can be used in line only if a maximum flow of 2 gallons per minute can be tolerated To avoid cracking the 276127 flow cell housing use Teflon tape on cell threads and tighten cell only enough to prevent leakage To install tighten the cell into a 1 schedule 40 pipe tee If the flow cell housing is used assemble the cell and housing and install it in the process flow line or in a bypass line gt L N le ell Location Process i 4 3 Cooler 1 81mm Pump _ a n 23383 Figure 3 2 Typical Conductivity Measuring Installation 3 4 Immersion Type Mounting for 04905 Series Cells Does not apply to DL4 5xx Series Cells The cell must be immersed to a level above the cross channel or guard tube hole and must be immersed to 1 1 2 inches above this hole if an integral compensator is used For most immersion applications a 1 2 support pipe preferably CPCV must be threaded into the cell bushing using Teflon tape to seal the threads thus permitting adequate immersion Unless this pipe extension is used do not immerse the top of the bushing To insured that a representative sample is meas
12. as i essen cgenndicdaveasscdautageleessadsecdeaadsndesvacseassendelecdecedeads 9 Electrical Connections eene enne enne nennen nnne nne nn nennen inneren enn en 11 MAINTENANCE cocusapoisuata ER 17 Introduction 2 m A A A E ee ange eta 17 4 0 Clean The Colla is 17 To Check Conductivity System eerie rete the tes chad eeu nn sues an ante 17 Replacement Parts and Accessories cccccsseesseesceesseeseceseceseceeeeseeeeeeeceseeeseeeseecssecsaecsecnaeceseeeaeens 18 4905 Series Conductivity Cells Installation and Maintenance 6 04 Figures Figure 1 1 4905 Type Conductivity Cell Mounted in a 1 1 4 Schedule 80 Tee Using an Adapter Bushing 1 Figure 3 1 Types of Mountings for 4905 Type Conductivity Cells 7 Figure 3 2 Typical Conductivity Measuring Installation 8 Figure 3 3 Dimension Drawing for 276127 Flow Housing 10 Figure 3 4 Mounting Dimensions for 04905 Series and DL4 5xx Series Cells 11 Figure 3 5 Mounting Dimensions for 04905 Series with Junction Box Head Not available on DL4 5XX DirectLine Cells 11 Figure 3 6 4905 Series Cell with Junction Box Head Connected to 9782 Conductivity Resistivity Analyzer 12 Figure 3 7 04905 Series Cells with 7 or 20 Foot Leads Connected to 9782 Conductivity Resistivity Analyzer or Connected to Junction Box 13 Figure 3 8 04905 series cells with 20 leads connected to an APT4000 14 Figure 3 9 04905 series cells with or 20 leads connected to an APT2000 14 Figure
13. by solids settling in the cell channels See Figure 3 2 6 04 4905 Series Conductivity Cells Installation and Maintenance 9 4905 Series Conductivity Cells Installation and Maintenance Manual 44 2 Flow Out 1 1 2 3 4 NPT 38 N 38mm ioi Flow Chamber 38mm m cago 3 4 NP B n E z lt Flow In 8 3 4 ix 222mm 13 1 4 NO 337mm g 1 Fitting Allow 7 3 4 197mm for removal of cell NOTES 1 Mount cell and flow chamber horizontally as shown above with flow exit up to eliminate possible air gap around cell body 2 If cell and flow chamber must be mounted vertically attach a short length of tubing to flow exit as shown below and form a trap to ensure filling of flow chamber especially at low flow om H 2 min LI aln 23384 Figure 3 3 Dimension Drawing for 276127 Flow Housing 10 4905 Series Conductivity Cells Installation and Maintenance 6 04 Installation x 1 687 gt lt gt See Table 42 8mm Cell Constant X Approx mm 001 5 4 138 0 1 5 4 138 1 5 4 138 5 45 1114 10 58 146 20 6 0 152 25 69 175 50 6 9 175 Cell cable is approx 0 250 15 6 4 mm O D max with 3 or 4 38mm Octagon conductors of 18 AWG wire amm Dia an 23385 Figur
14. d to correct some errors in the text 2 6 03 Removed obsolete info added DL4000 details References Honeywell Documents The following list identifies all Honeywell documents that may be sources of reference for the material discussed in this publication Document Title ID 9782 Series Conductivity Resistivity Analyzer Controller Operators Manual 70 82 25 74 APT2000CC Transmitter User Manual 70 82 25 95 APT4000CC Analyzer User Manual 70 82 25 104 DirectLine Module for Conductivity User Manual 70 82 25 112 Contacts The following list identifies important contacts within Honeywell Organization Telephone Address Honeywell Tech support 1 800 423 9883 Voice 1100 Virginia Drive Fort Washington PA 19034 6 04 4905 Series Conductivity Cells Installation and Maintenance iii 1 1 1 2 1 22 3 1 3 2 3 3 3 4 3 5 3 6 4 1 4 2 4 3 4 4 Contents INTRODUCTION 2 22 ee 1 Overview ar Ran eet ee rue P tei P ipt teet ae oue abo ean a dee A 1 SPECIFICATIONS AND MODEL SELECTION GUIDE 3 Specifications O EN 3 Model Selection Guides esses erret erre nnns 4 INSTALEATION ipe itecsie detecte een 7 ul Y 7 TypesoF Mounting i Asa e ia e Hr e eee RE us e ERR edis 7 Blows Type Mounting 2 22 02 eee itte it i eet ete eei eti ca pepe nd 8 Immersion Type Mounting for 04905 Series Cells essere 8 Insertion Type Mounting siir
15. e 3 4 Mounting Dimensions for 04905 Series and DL4 5xx Series Cells yn 140mm constant 001 Four Point Terminal Board for lead wire connections Each 6 32 screw terminal will accomodate one 12 or smaller AWG wire 3 76mm 1 NPT 1 5 ide Ga 38mm Octagon 3 4 female NPT for user s flexible electrical conduit connection For insertion or removal of cell disconnect conduit connections NOTE For existing users with conduit a 4 x 1 2 adapter bushing will be required to use existing conduit Figure 3 5 Mounting Dimensions for 04905 Series with Junction Box Head Not available on DL4 5XX DirectLine Cells 3 6 Electrical Connections 6 04 The detailed terminal board connections for the analyzer or transmitter are given in the appropriate directions furnished with the measuring instrument See Figure 3 6 and Figure 3 7 for connections to the 9782 Analyzer See Figure 3 8 and Figure 3 9 for connections to the APT Series See Figure 3 10 and Figure 3 11 for connections to the DirectLine Modules To avoid the possibility of ac pickup in the cell leads separate them from all ac line voltage wiring or run them in a separate grounded conduit 4905 Series Conductivity Cells Installation and Maintenance 11 4905 Series Conductivity Cells Installation and Maintenance Manual
16. e applications Nickel is used in all others Note 2 If shorter length is required cut to length skin and tin ends RESTRICTIONS Restriction Available Only With Not Available With Letter Table Selection Table Selection For 9782 7082 and APT2000 4000CC Analyzers Only DL4000 Series for use with DirectLine Sensor Modules Instructions Select the desired key number The arrow to the right marks the selection available Make the desired selections from Table using the column below the proper arrow A dot denotes ME No dot denotes not available Key Number I Lors al peu ES Key Number Mounting Electrode Only Specify DL423 separately Selection Availability Contacting Conductivity Probes Mountings for use with DL423 DL4 Eu TABLE I Mounting Type Construction Cell Constant DirectLine Connection Material of DirectLine Internal High Pu 302 4974 Not available for 4905 Style Conductivity Cells 4905 Series Conductivity Cells Installation and Maintenance 6 04 4905 Series Conductivity Cells Installation and Maintenance Manual TABLE Mounting Type Construction Cell Constant DirectLine Connection continued Material of Internal Construction Cell DirectLine Cell Mounting Type Note 2 Constant Connection EEPROM Selection Availability 0 1 0 1 10 Integral 10 9 General Purpose 4905 style Insertion Assembly Style Conductivit Insertion Replace 4908 style Nicke
17. e used if solution resistance measures less than 1000 ohms unless the cell is platinized in accordance with Section 5 4 2 To Clean The Cell The cell will require cleaning if sludge slime etc accumulates in the flow channels Since the materials of construction are chemically inert chemical agents may be used and are recommended for cleaning the cells The particular cleaning agent used must be selected according to the type of contamination to which the cell is exposed CAUTION The cell housing is PES Polyethersulfone DO NOT clean with acetone chloroform toluene benzene or any other chlorinated hydrocarbon In general soap and hot water are effective and adequate If necessary a soft bristle brush of about 1 4 diameter may be used to clean out the tubular channels of the 10 25 and 50 constant cells Do not scratch the electrode surfaces Be especially careful not to bend the electrode plates of the 0 1 constant cell Rinse the cell thoroughly in tap water and then in distilled water if available 4 3 To Check Conductivity System 6 04 To check the conductivity system comprising conductivity cell leadwire and measuring instrument the user may desire to make a measurement in a reference solution of known conductivity Control the temperature only within limits consistent with the desired accuracy The 25 C temperature value is suggested The solutions may be prepared in the presence of air The solution must fill the cel
18. igure 3 5 m VC CN T T 0 0 Immersion Type I Insertion Pipe extension Flow Type Type and coupling not supplied Using Plastic O Not available Flow Housing with DirectLine Honeywell p n 276127 cells DL4 5XX LY series 1 BS ah 233804 Figure 3 1 Types of Mountings for 4905 Type Conductivity Cells 6 04 4905 Series Conductivity Cells Installation and Maintenance 7 4905 Series Conductivity Cells Installation and Maintenance Manual 3 3 Flow Type Mounting The cross channel or guard tube hole in the cell must always be covered by the solution and the solution level must be 1 1 2 inches above these holes When mounting the cell in a pipe tee such as shown in Figure 3 2 have the solution enter the tee from below and exit to the side As shown the guard tube hole is in line with the horizontal pipe run However if it is possible that the pipe line will not be full at all times locate the hole just below the exit pipe to insure flooding of the cell under all conditions As shown in Figure 3 2 always locate the cell on the pressure side not the vacuum side of the pump The flow cell housing an accessory part having 3 4 male inlet and female outlet threads can be used for an in line measurement or in a bypass line as shown in Figure 3 2 depending upon the flow volume or pipe size Adapter bushings are available to convert inlet and outlet fittings to 1 4 female thre
19. l 50 Platinum 50 Notes 1 Remote conductivity cells are supplied with a integral 6 1m 20 ft sensor cable which must be wired to the DL423 remote connector supplied with DL423 Sensor Module 2 Platinum is used in acid and base applications Nickel in all others TABLE Il Special Cell Constructions Cell Type Special Construction ALL None 000 4905 Extra 4 4 of cell length 440 4909 4908 316 SS Support Tube 316 TABLE lll Options None Linen Customer I D Tag 3 lines w 22 characters line Taggin ss Stainless Steel Customer D Tag 3 lines with 22 characters per line Calibration None _ _ 00 Certificate Calibration certificate to be supplied w shipment __ 10 6 4905 Series Conductivity Cells Installation and Maintenance 6 04 Installation 3 Installation 3 1 Overview The conductivity cell is secured permanently to the 1 N P T bushing which is used for all types of mountings The three different types of mountings are illustrated in Figure 3 1 Although the physical appearance of the various cells is the same except for length the cell construction differs according to the constant On the 10 25 and 50 constant cells the electrodes are short tubes located midway inside the two parallel tubular channels that run lengthwise through the cell and are open to the sample at both ends of the cell The channels are larger on the 25 constant cell and they are elliptical on the 5 and 10 constant cell The
20. l during measurement For optimum accuracy in acid measurements above 5 concentration use the Calibration Trim function available in the conductivity instrument See the 9782 APT 2000 4000 or DirectLine Model DL423 manuals for details on the trim function To check the constant of a cell use a second cell having the same constant and compare the reading of one against the other If the 04905 Series conductivity cell model number contains 333 the normal resistance of the temperature sensor as measured across the red B and green D leads is 8550 ohms at 25 C To check the electrode insullation connect an ohmmeter across the black A and white C leads With a dry and clean cell the resistance should be greater than 50 megohms 4905 Series Conductivity Cells Installation and Maintenance 17 4905 Series Conductivity Cells Installation and Maintenance Manual 4 4 Replacement Parts and Accessories Cell Guard Tube 1 0 1 and 0 01 constants only Leadwire bushing for 04905 Series Cells Flow Cell Housing PES 1 1 4 to 1 Bushing to adapt cell to 1 1 4 Schedule 80 pipe tee PVDC 276142 Cell Extension Leadwire Table III other than 333 Three conductor PVC 18 gage 105 C max Belden 9493 834059 Three conductor Tefzel 18 gage 140 C max 834086 Junction Box 316260 9782 Standard Ranges Up to 500 ft Three conductor 18 gage cable Belden 9494 834059 Coax Cable Belden 9259 22 AWG 835024
21. nts For example use a platinum element cell if the cell will measure or be exposed to regeneration acids or bases 6 04 4905 Series Conductivity Cells Installation and Maintenance 1 4905 Series Conductivity Cells Installation and Maintenance Manual The cell constant is selected according to the range of the measuring instrument used and the solution measured In general a high constant cell is used for solutions having low electrical resistance high conductivity and a low constant cell is used for solutions having high electrical resistance low conductivity The DL4 5xx Series of 4905 style cells used with the DirectLine Module DL423 Series can be specified for either integral or remote mounting of the module The integral mount cell has a PC board connector so the DirectLine module mounts directly on the cell Cells for remote mounting of the DirectLine module have a 20 cable that is an integral part potted of the cell Automatic Temperature Compensation ATC during the measurement is provided by a built in temperature sensing network located near the cross channel or guard tube holes The cells are molded from Polyethersulfone PES which is resistant to most corrosive chemicals over a wide range of temperatures A common exception is chlorinated hydrocarbons Sample solutions come into contact only with the above plastic and the platinum or nickel electrode surface Any cell can be supplied with either electrode material 2 4
22. ured at all times the solution must circulate through the channels In quiescent solutions provide sufficient agitation To install the cell determine the length of 1 2 pipe required to give the immersion needed to keep the cell completely immersed at all times Up to six feet of pipe can be used for the standard cell having seven feet of cable Remove the small bushing at the top of the cell slide it off the cable and replace it with the 1 2 inch pipe At the top of the pipe slide a pipe coupling and the small bushing back over the leadwire as shown in Fig 3 1 or install a junction box to terminate the pipe 8 4905 Series Conductivity Cells Installation and Maintenance 6 04 Installation 3 5 Insertion Type Mounting The cell can be inserted into a 1 N P T threaded opening but it is imperative that the tank or chamber be full under all process conditions Make certain the liquid head is above the cell location A vertical insertion from above or a horizontal insertion can be used To install simply tighten the cell into a 1 N P T threaded opening using a Teflon thread compound such as Teflon tape so that the entire electrode is immersed in the measured solution Allow at least 1 2 inch clearance beyond the end of the cell In applications where vertical mounting is required avoid a position with the cell channels pointed up as this will permit solution to flow down into the open end of the cell and may result in clogging
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