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

1 Model SC42 and FF40/FS40/FD40 2/4-electrode design for conductivity Flow fittings, Subassemblies and Immersion fittingsGS 12D7J1-01E-E13th 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 strongly influenced by temperature variations, polarisation effects at the surface of the contacting electrodes, cable capacitances, provides sensors for pure water systems, General applications with a 2- electrode design and applications involving high concentrations of chemicals with a 4- electrode install conductivity sensors in a permanent or semi-permanent location, 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 direct mounting of conductivity sensors in piping immersion fittings are designed for tanks, open vessels or drains. PVC and stainless steel construction materials suit most process conditions, regarding chemical resistance, pressure and temperature 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).

3 Sensors for ultra-pure water applications. Built-in resistance thermometers Pt 1000 for automatic temperature compensation. Optional material certificate according to EN 10024 for stainless steel sensors. Optional quality inspection ConfigurationSensorsCablesFittingsTransm ittersAccessoriesSensorsCablesFittingsTr ansmittersAccessoriesSensorsCablesFittin gsTransmittersAccessoriesPlug-in flow sensors (SS)Stainless steel cells for 2- electrode type with cell constants and conductivity sensors have a stainless steel body and PEEK (Poly Ether Ether Ketone) inner insulation for high pressure/temperature applications.

4 A special treatment of the electrodes ensures optimal resistance against polarisation. The sensor includes a built-in resistance thermometer Pt1000 for automatic temperature combination sensor plug and cable socket is watertight and temperature resistant up to 100 C (212 F). It meets the requirements of dimensions of the sensor are standardised for mounting in the standard fitting program of High precision of the cell constant (individually calibrated). 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.

5 Standardised dimensions for mounting in flow- and immersion Applications1. Cell constant = cm-1 For measurement in very low conductive solutions like pure water, condensate, demineralised water, distilled water, Cell constant = cm-1 For measurement of low conductive solutions like boiler feed water, surface water, SpecificationsMaterialsWetted parts a. Body : Stainless steel AISI 316 b. Insulation : PEEK (Poly Ether Ether Ketone) c. electrode : Stainless steel AISI 316 d. Quad-rings, O-rings : Viton e. 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 30125612D7J1-13 FLOW (L=163 mm)SC42-SP24 (L=110 mm)Unit: mm (inch)Model Temp.

6 Element Cell-constant Pressure rating Max. temperature 90% Temp. response Measurement systemSC42-SP34 Platinum resistor cm-1 10 bar/142 PSIG 150 C/302 F < 1 min. 2- electrode system (Pt1000 to DIN)SC42-SP24 Platinum resistor cm-1 10 bar/142 PSIG 150 C/302 F < 3 min. 2- electrode system (Pt1000 to DIN)Figure 1 Flow type The maximum pressure and temperature rating also depend on the actual process conditions. Under certain circumstances it is necessary to test the cell in situ. Additional data is available from : Stainless steel cells for 2- electrode systems with cell-constants and cm-1 designed for pressure and temperature ratings of up to 40 bar (PSIG) at 250 C ( F) are available upon /M : Material certificate according to EN 10024 (only wetted metal parts) /Q : Quality inspection certificate3GS 12D7J1-01E-E12D7J1-07 FLOW TYPE SENSOR 30( ") 36( ")10( ") L20( ")30( ")43( ") dSC42-EP04 (L= 193 mm)SC42-EP14 (L= 160 mm)SC42-EP08 (L= 193 mm)SC42-EP18 (L= 160 mm)Unit: mm (inch)Model Temp.

7 Element Cell constant Pressure rating Max. temperature 90% Temp. response Inlet d Meas. systemSC42-EP04 Pt1000 10 cm-1 10 bar/142 PSIG 110 C/230 F < 3 min. 5 mm Pt1000 1 cm-1 10 bar/142 PSIG 110 C/230 F < 2 min. 10 mm Pt1000 10 cm-1 10 bar/142 PSIG 110 C/230 F < 3 min. 5 mm Pt1000 1 cm-1 10 bar/142 PSIG 110 C/230 F < 2 min. 10 mm 2 Flow type111213151614 CELLPt 1000 Figure 4 Connector 4- electrode system The maximum pressure and temperature rating also depend on the actual process conditions. Under certain circumstances it is necessary to test the cell in situ.

8 Additional data is available from flow sensors (EPOXY)Epoxy cells for 2- and 4- electrode type with cell-constants 1 and 10 conductivity sensors have a body of glass-filled epoxy resin. The electrodes are made from graphite impregnated with epoxy resin. This gives the sensors a good chemical resistance and a good reduction of polarisation Good chemical resistance. Choice in 2- and 4- electrode types. Easy installationGeneral SpecificationsMaterialsWetted parts a. Body : Glass filled epoxy resin b. Electrodes : Graphite impregnated with epoxy resinConnector plug : Polyamide with gold plated contactsWeight and immersion length (L in figure)Model SC42-EP0.

9 : 270 gram; 193 mm (L)Model SC42-EP1. : 220 gram; 160 mm (L)OptionsCertificate /Q : Quality inspection certificateFigure 3 Connector 2- electrode systemFunctional Specifications111213151614Pt 1000 CELL 29( ")26( ") 36( ")10( ") 19320( ")46( ")30( ") 5( ")12D7J1-12 FLOW TYPE 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)Figure 5 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 measurement in aggressive media.

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