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Omega Engineering CDE681 manual

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Table of contents for the manual

  • Page 1

    Conductivity/Resistivity SERIES Sensors MAKCHESlEfl.UK CDE68 1 STAMFORO.CT info@omega. cor n wwbv.omega.cum e-mail: (omega.com@j Shop online at[...]

  • Page 2

    EMC / EM I regu l a ti ons t ha t app l y . OMEGA i s cons tantly pursuing certification of its products to the European Ne w App roach D ir ec ti ves . OMEGA w ill add t he CE m ark to every appropr i a te dev i ce upon ce rtifi ca ti on . The i n f o r m a ti on con tained in this docu m en t i s be li eved t o be co rr ec t, bu t OMEGA E ng i ne[...]

  • Page 3

    i purpdse is to alert the user of this sensor to important operating information. .- HELPFUL IDENTIFIERS In addition to information on installation and operation, this instruction manual may contain WARNINGS pertaining to user safety, CAUTIONS regarding possible sensor malfunction, and NOTES on important, useful operating guidelines. A warning look[...]

  • Page 4

    12 I_ ii f Section 1 Recommended Cleaning Procedure . . . . . . . . . . . . ..*........................... 10 Section 2 Troubleshooting 2.1 Checking Sensor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 2.2 Customer Assistance . . . . . . . . . . . . . . .[...]

  • Page 5

    :I R ounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Figure 2-4 Immersion Mounting Details ........................................................ 6 Figure 2-5 Interconnect Cable Termination Details ..........................[...]

  • Page 6

    . ‘ I ’ NOTES: Conductivity/Resistivity Sensors f-t-? CDE68 1 Series 2:14 PM Pageiv 7/17/03 M3594-0603-CDE681Series.qxd f[...]

  • Page 7

    0.05,0.5,1.0,5.0, or 10. Installation Style: For sensors with a 0.05 cell constant, use K-inch or %-inch male NPT compression fittings made of Kynar (PVDF) or 316 stainless steel. For sensors with any other cell constant, use a %-inch male NPT compression fitting made of Kynar or 316 stainless steel. In all cases, the fitting enables the sensor to [...]

  • Page 8

    2 I_ % NPT % NPT % NPT - % NPT % NPT ( Compression Material K yna r ( PVDF ) 316SS K yna r 316SS K yna r 316SS K yna r 316SS K yna r 316SS Fitting Thread CDE681 - E - S 1 1 CDE681 - E - K 10 . 0 I CDE681 -D-S . Model No. CDE681 - A - K CDE681 - A - S CDE681 - B - K CDE681 - B - S CDE681 - C - K CDE681 - C - S Cell Constant 0 . 05 0 . 5 1 .0 CDE681 [...]

  • Page 9

    ( TEMP+ ) BLUE ( TEMP -) CLEAR (I NNER SH I ELD ) Figure 2-l. General Dimensions and Cable Wire Details Insertion Mounting To ensure optimum measurement performance, follow these guidelines when insertion mounting the sensor: ?? Install the sensor into the pipe run so that the process flows directly into the end of the sensor (see Figure 2-2). ?? P[...]

  • Page 10

    4 4 ontoXe 2-3 to get an effective seal. sensor as shown in Figure I Correctly orient the ferrule ’ I comtxession nut first. comoression nut and ferrule onto the sensor. u FLOW Figure 2-2. Insertion Mounting Details 2. Remove the compression fitting from the sensor and screw it into the pipe tee (or reducer, if used). 3. Electrically connect sens[...]

  • Page 11

    its “cross-flow” holes with the exiting process flow path as shown in Figure 2-3. After tightening the compression nut, the ferrule will be permanently crimped. Therefore, make sure that the sensor is inserted to the proper depth before tightening the compression nut. C. With the sensor properly positioned, tighten the compression nut onto the [...]

  • Page 12

    .:/ Figure 2-4. Immersion Mounting Details I_ 3 / 4 I NCH CO MPRESS I ON F I TT I NG SE NSOR l/ 2 I NCH X 1 I NCH NP T REDUCER 3 / 4 I NCH X 3 , 4 I NCH OR l/ 2 I NCH X 1 88 . 9 T O 139 . 7 ( 3 . 50 T O 5 . 50 ) SE NSOR EXTE NS I ON 1 I NCH N PT COU PL I NG ( CUS TOMER PROV I DED ) I I I D I MENS I ON S mm ( I ” .) 3 / 4 OR / _ . I + - + -: 1 I N[...]

  • Page 13

    :I P Teflon tape may not be adequate.) 4. Fasten a Unilet junction box onto the other end of the pipe. 5. Run interconnect cable from the analyzer into the Unilet junction box. Connect the sensor and interconnect cable wires, by matching colors, to the terminals in the junction box. Fasten the cover onto the junction box. 6. Electrically connect th[...]

  • Page 14

    i Be careful not to damage the exposed section of the cellophane binder. I_ _ !4 inch of the outer cable jacket and outer shield foil. - one shielding the signal, and one shielding the overall cable. These specific cable characteristics protect the measurement signal from electromagnetic interference. Using a cable with different construction may i[...]

  • Page 15

    -) I NN ER SH I ELD To Analyzer: Refer to the instrument instruction manual and connect the interconnect cable wires to appropriate SENSOR terminals in the same way as the sensor wires would be directly connected. 9 ( TE MP S t uE + ) SH I ELD RED ( DR I VE ) BLACK ( SENSE ) W H I TE ( TE M P L6.41 SE NSOR T yp _ 0 . 25 FO I L Figure 2-5. Interconn[...]

  • Page 16

    I 10 I_ - RECOMMENDED CLEANING PROCEDURE Keep the sensor reasonably clean to maintain measurement accuracy. The time between cleanings (days, weeks, etc.) is affected by the characteristics of the process solution and can only be determined by operating experience. 1. 2. 3. 4. 5. 6. Remove most contaminate buildup by carefully wiping the inner elec[...]

  • Page 17

    3 I_ 5 ohms Between black wire and inner electrode Less than 5 ohms Between black and red wires Infinite (open circuit) Between black and white wires Between red and white wires Infinite (open circuit) Infinite (open circuit) Between red and inner shield wires Infinite (open circuit) Between black and inner shield wires Infinite (open circuit) Betw[...]

  • Page 18

    li 12 V I_ email: info at omega.com All sensors returned for repair or replacement must be freight prepaid and include the following information: 1. A clearly written description of the malfunction. 2. Name of person to contact and the phone number where they can be reached. 3. Proper return address for shipping sensor(s) back. Include preferred sh[...]

  • Page 19

    0 Copyright 2003 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC. f The pu r chase r i s r espons i b l e f o r sh i pp i ng cha r ge s , f [...]

  • Page 20

    M3594/0603 & Dissolved Oxygen Instruments pH, Conductivity w & Wastewater Treatment m Industrial Water & Water Monitors m Air, Soil & Tubing m Pumps m Refractometers & Control Instrumentation m Metering m Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL 0 ’ Flexible Heaters & Band Heaters B Immersion & Strip Hea[...]