General Specifications 2/4-electrode design for ...

1 Model SC42 and FF40/FS40/FD402/4-electrode design for conductivity Flow fittings, subassemblies and immersion fittings GS 12D7J1-01E-E11th EditionThe measurement of specific conductivity in aqueous solutions is becoming increasingly important for the determination of impurities in water or the concentration measurement of dissolved chemicals. The accuracy of the measurement is stronglyinfluenced by temperature variations, polarisation effects at thesurface of the contacting electrodes, cable capacitances, provides sensors for pure water systems, generalapplications with a 2-electrode design and applications involvinghigh concentrations of chemicals with a 4-electrode install conductivity sensors in a permanent or semi-permanentlocation, Yokogama offers wide a range of flow and immersion fittings.

2 A high degree of standardisation simplifies mounting,servicing and removal or replacement of the are flow fittings and subassemblies for in-line or directmounting of conductivity sensors in piping immersion fittings are designed for tanks, open vessels ordrains. PVC and stainless steel construction materials suit mostprocess conditions, regarding chemical resistance, pressure andtemperature fiitings of stainless steel might be used in sanitary Wide range of sensors to suit most process conditions. High precision of the cell constant (Field calibration not necessary). Sensors for ultra-pure water applications. Built-in resistance thermometers Pt 1000 for automatic temperature compensation. Optional material certificate B according to EN-10-24(DIN50049) for stainless steel sensors.

3 Optional quality inspection ConfigurationSensorsCablesFittingsTransm ittersAccessoriesSensorsFittingsPlug-in flow sensors (SS)Stainless steel cells for 2-electrode type with cell con-stants and conductivity sensors have a stainless steel body and PEEK(polyether-ether-ketone) inner insulation for high pressure/temper-ature applications. A special treatment of the electrodes ensuresoptimal resistance against polarisation. The sensor includes abuilt-in resistance thermometer Pt1000 for automatic combination sensor plug and cable socket is watertight andtemperature resistant up to 100 C (212 F). It meets the require-ments of IP dimensions of the sensor are standardised for mounting inthe standard fitting program of High precision of the cell constant (individually calibrated).

4 Fast temperature response. High pressure/temperature Specifications . Built-in resistance thermometer, Pt1000 RTD Plug-socket cable connection for easy installation and maintenance, meeting IP 65. Standardised dimensions for mounting in flow- and Applications1. Cell constant = cm-1 For measurement in very low conductive solutions like purewater, condensate, demineralised water, distilled water, Cell constant = cm-1 For measurement of low conductive solutions like boiler feedwater, surface water, SpecificationsMaterialsWetted partsa. Body: Stainless steel AISI 316b. Insulation: PEEK (polyether-ether-ketone)c. Electrode: Stainless steel AISI 316d. Quad-rings, O-rings: Vitone. Connector: Polyamide with gold plated contactsWeight and immersion length (L in figure)Model SC42-SP24: 440 gram; 110 mm (L)Model SC42-SP34: 600 gram; 163 mm (L)Functional Specifications2GS 12D7J1-01E-E 362010 L 301256SC42-SP34SC42-SP24 Unit: mm (inch)ModelTemp.

5 Element Cell-constant Pressure rating Max. temperature 90% Temp. responseMeasurement systemSC42-SP34 Platinum cm-110 bar/142 PSIG150 C/302 F< 1 system(Pt1000 to DIN)SC42-SP24 Platinum cm-110 bar/142 PSIG150 C/302 F< 3 system(Pt1000 to DIN)Flow typeThe maximum pressure and temperature rating also depend on the actual process conditions. Under certain circumstances it is necessaryto test the cell in situ. Additional data is available from :Stainless steel cells for 2-electrode systems with cell-constants and cm-1designed for pressure and temperature ratings ofup to 40 bar (PSIG) at 250 C ( F) are available upon : Material certificate to EN-10-24(DIN50-049) (on wetted parts)/Q: Quality inspection certificate3GS 12D7J1-01E-EPlug-in flow sensors (EPOXY)Epoxy cells for 2- and 4-electrode type with cell-constants1 and 10 conductivity sensors have a body of glass-filled epoxyresin.

6 The electrodes are made from graphite impregnated withepoxy resin. This gives the sensors a good chemical resistanceand a good reduction of polarisation Good chemical resistance. Choice in 2- and 4-electrode SpecificationsMaterialsWetted partsa. Body: Glass filled epoxy resinb. Electrodes: Graphite impregnated with epoxyresinConnector plug: Polyamide with gold plated con-tactsWeight and immersion length (L in figure)Model SC42-EP0.: 270 gram; 193 mm (L)Model SC42-EP1.: 220 gram; 160 mm (L)OptionsCertificate/Q: Quality inspection certificateFunctional Specifications 30( ") 36( ")10( ") L20( ")30( ")43( ") dSC42-EP04SC42-EP14SC42-EP08SC42-EP18 Unit: mm (inch)ModelTemp. element Cell constant Pressure rating Max. temperature 90% Temp. response Inlet d Meas.

7 SystemSC42-EP04Pt1000 10 cm-110 bar/142 PSIG110 C/230 F< 3 1 cm-110 bar/142 PSIG110 C/230 F< 2 10 cm-110 bar/142 PSIG110 C/230 F< 3 1 cm-110 bar/142 PSIG110 C/230 F< 2 type123564 CELLPt 1000 Connector 4-electrode systemThe maximum pressure and temperature rating also depend on the actual process conditions. Under certain circumstances it is necessaryto test the cell in situ. Additional data is available from 1000 CELLC onnector 2-electrode system 29( ")26( ") 36( ")10( ") L20( ")46( ")30( ") 5( ")Weight and immersion length Model SC42-FP0: ca. 270 gram; 193 mmModel SC42-TP0: ca. 320 gram; 193 mmWARNING:Temperature shocks should be avoidedOptionsCertificate/Q: Quality inspection certificateSC42-FP04SC42-TP04SC42-FP08SC 42-TP08 Unit: mm (inch)Flow type4GS 12D7J1-01E-EPlug-in flow sensors (PTFE and PVDF)PTFE or PVDF shielded glass-platinum cells for 2- and 4-electrode type with cell constant 10 conductivity sensors are excellent suited for measurementin aggressive media.

8 The (protection) body consists of PVDF(Kynar) or PTFE (Teflon with 25% glass filling).The cell itself is made from highly resistant glass with platinumelectrodes. The electrodes surfaces of the 2-electrode cells(SC42-P04) are further enhanced by gold plating to minimize thepolarisation internal sealing between the glass measuring cell and thePTFE/PVDF body (not visible in drawing) is by a KALREZ O-ring(high quality with excellent chemical resistance). A VITON O-ringis supplied with the sensors for sealing the cell in the fitting (visi-ble in drawing). For measurements in strongly oxidizing acids anoptional KALREZ O-ring is Excellent chemical resistance for applications in aggressivemedia like oleum, concentrated mineral acids, etc. Suitable for measurement of highly conductive, strongly polutedsolutions.

9 Optimum results by gold plating (of 2-electrode version) againstpolarisation applicationsPTFE-cell: Concentrated mineral acids such as: oleum,nitric acid, hydrochloric acid, : All aggressive media with the exception ofstrongly oxidizing : See the chemical resistance list in table specificationsMaterialsWetted partsa. Body (shield): - PVDF (Kynar ) for model SC42-FP04 PTFE (Teflon with 25% glass) for modelSC42-TP04/TP08b. O-ring: - KALREZTMfor cell-body sealing- VITONTMfor sealing in het fittingc. Electrodes: Platinum, Gold plated for 2-electrode systemd. Inside cell: Glass tubee. Connector plug : Polyamide with gold plated contactsFunctional SpecificationsModelTemp. element Cell-constant Pressure rating Max. temperature 90% Temp. responseMeasurement systemSC42-FP04PT100010 cm-110 bar/142 PSIG110 C/230 F< 1 systemSC42-TP04PT100010 cm-12 bar/28,5 PSIG110 C/230 F< 1 systemSC42-FP08PT100010 cm-110 bar/142 PSIG110 C/230 F< 1 systemSC42-TP08PT100010 cm-12 bar/28,5 PSIG110 C/230 F< 1 systemThe maximum pressure and temperature rating also depend on the actual process conditions.

10 Under certain circumstances it is necessaryto test the cell in situ. Additional data is available from SensorsInsertion sensors for 2-electrode type with cell constant insertion sensors are especially useful in applications where arepresentative sample flow through the sensor cannot beachieved easily ( in liquids containing solids, direct measure-ment in pipe-lines). The electrode surfaces are easily accessedfor cleaning or maintenance. The model is especiallydesigned for direct mounting in sanitary piping systems. It has acollar piece suitable for mounting with DN obstacles in the flow-line by short immersion chemical polarisation addition to that the model SC42-EP15D can be directly fittedwith a DN25 measurement of moderate conductive solutions like surfacewater, waste water, salt solutions, SpecificationsMaterialsWetted partsa.