 pH measurement is usually done with the use of a combination electrode. The combination electrode is an electrode system formed by a glass sensing half-cell and an internal reference half-cell. As the reference junction acts as the medium of conductor between the reference electrolyte and the sample to be measured, it must allow free movement of electrons through the junction and into the sample.
A potential develops on the membrane surface when a pH electrode comes into contact with a sample and its value varies with the pH of the sample. This variation in potential is measured in mV by a meter and is converted to direct pH values.
The selection of a suitable electrode depends on the types of application.
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pH Electrode Model: EC100GTSO-05B
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Product Specification
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Description
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pH Range
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0 to 14
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Reference
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Annular Teflon, double junction
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Reference electrolyte
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Saturated KCl, polymerized gel
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Operating temperature
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0 to 80 °C
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Pressure tolerance
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6 bars
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Temperature sensor
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Pt 100
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Potential matching pin
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Platinum
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Material
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PPS (Ryton)
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Thread
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3/4” NPT
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Cable
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Integral 5m low-noise semi-conductor screened
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Connector
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BNC
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Dimensions: Length (excludes cable)
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151 mm
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Diameter (external)
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26 mm
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Weight
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650 g
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pH Electrode Model: EC100GTSO-05B
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Product Specification
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Description
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pH Range
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0 to 14
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Reference
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Annular Teflon, double junction
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Reference electrolyte
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Saturated KCl, polymerized gel
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Operating temperature
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0 to 80 °C
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Pressure tolerance
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6 bars
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Temperature sensor
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N.A.
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Potential matching pin
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Platinum
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Material
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PPS (Ryton)
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Thread
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3/4” NPT
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Cable
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Integral 5m low-noise semi-conductor screened
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Connector
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BNC
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Dimensions: Length (excludes cable)
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151 mm
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Diameter (external)
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26 mm
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Weight
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430 g
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pH Electrode Model: ECARHTTSO-05B
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Product Specification
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Description
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pH Range
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0 to 14
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Reference
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Annular Teflon, double junction
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Reference electrolyte
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Saturated KCl, polymerized gel
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Operating temperature
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0 to 110 °C, high temperature
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Pressure tolerance
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9 bars
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Temperature sensor
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N.A.
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Potential matching pin
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N.A.
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Material
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PPS (Ryton)
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Thread
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3/4” NPT
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Cable
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Integral 5m low-noise semi-conductor screened
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Connector
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BNC
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Dimensions: Length (excludes cable)
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151 mm
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Diameter (external)
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26 mm
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Weight
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430 g
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pH Electrode Model: ECARTSOHF-05B
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Product Specification
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Description
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pH Range
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0 to 14, HF resistant
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Reference
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Annular Teflon, double junction
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Reference electrolyte
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Saturated KCl, polymerized gel
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Operating temperature
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0 to 80 °C
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Pressure tolerance
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6 bars
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Temperature sensor
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N.A.
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Potential matching pin
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N.A.
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Material
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PPS (Ryton)
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Thread
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3/4” NPT
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Cable
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Integral 5m low-noise semi-conductor screened
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Connector
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BNC
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Dimensions: Length (excludes cable)
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151 mm
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Diameter (external)
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26 mm
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Weight
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430 g
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pH Electrode Model: ECARTSO-05B
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Product Specification
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Description
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pH Range
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0 to 14
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Reference
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Annular Teflon, double junction
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Reference electrolyte
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Saturated KCl, polymerized gel
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Operating temperature
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0 to 80 °C
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Pressure tolerance
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6 bars
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Temperature sensor
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N.A.
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Potential matching pin
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N.A.
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Material
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PPS (Ryton)
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Thread
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3/4” NPT
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Cable
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Integral 5m low-noise semi-conductor screened
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Connector
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BNC
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Dimensions: Length (excludes cable)
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151 mm
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Diameter (external)
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26 mm
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Weight
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430 g
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Model: ECFP21A1A1 pH Differential Electrode
Model: ECFR21A1A1 ORP Differential Electrode
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Unlike conventional combination electrodes, the differential electrode is designed for more durability in harsh industrial environments such as wastewater treatment. The unique electrode design prevents fouling of the reference electrode system. The salt bridge and reference solution is replaceable hence providing greater reliability, better accuracy and a more cost effective measurement system. |
Product Features:
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Extended electrode life - Larger reference chamber filled with buffer solution minimises the effects of dilution and prolongs electrode life.
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Cost savings - The soiled salt bridge and buffer reference solution can be easily replaced at a fraction of the cost of a new combination electrode.
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Cost savings - The soiled salt bridge and buffer reference solution can be easily replaced at a fraction of the cost of a new combination electrode.
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Automatic Temperature Compensation - Built-in temperature sensor.
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Up to 3000 feet signal transmission - Built-in preamp eliminates high impedance wiring problems hence signal transmission is possible up to 3000 feet and hand capacitance is prevented.
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Minimized susceptibility to ground loops - With differential pH/ORP measurement technology.
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Optimal mounting positions - Compact design ensures less obstruction when used in pipe mountings and universal 1.5" NPT mounting threads enables optimal mounting positions.
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Product Specification
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Description
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Measuring Range
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0 to 14 pH
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Resolution
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0.01 pH
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Wetted Materials
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Sensor Body -CPVC
Salt Bridge - Kynar®
Junctions
pH Electrode - General glass
Ground Rod - 316 Stainless
Steel
O-Ring Seals - Viton®
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Operating
Temperature
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-5°C to 95°C
(23°F to 203°F)
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Maximum Pressure
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100 psi @ 100°C / 212°F
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Maximum Flow Rate
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3 m/sec (10 ft/sec)
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Standard Sensor
Cable Length
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3 m (10 ft)
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Cable Wire Colors
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White Wire (-5V)
Black Wire (Ground)
Red Wire (Active pH/
ORP Electrode)
Green Wire (Ref Electrode)
Yellow Wire (Temperature/
NTC 300)
Drain/Shield (Shield Earth
Ground)
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Maximum
Transmission
Distance
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914 m (3,000 ft)
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Dimensions
(L x W)
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6.01” x 1.9”
(152.7 x 48.3 mm)
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ORP Electrode Model: ECHTAUTSO-05B
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Product Specification
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Description
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Sensor
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Gold
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Reference
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Annular Teflon, double junction
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Reference electrolyte
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Saturated KCl, polymerized gel
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Operating temperature
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0 to 80 °C
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Pressure tolerance
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6 bars
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Potential matching pin
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Platinum
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Material
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PPS (Ryton)
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Thread
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3/4” NPT
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Cable
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Integral 5m low-noise semi-conductor screened
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Connector
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BNC
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Dimensions: Length (excludes cable)
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151 mm
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Diameter (external)
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26 mm
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Weight
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500 g
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ORP Electrode Model: ECHTPTTSO-05B
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Product Specification
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Description
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Sensor
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Platinum
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Reference
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Annular Teflon, double junction
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Reference electrolyte
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Saturated KCl, polymerized gel
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Operating temperature
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0 to 80 °C
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Pressure tolerance
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6 bars
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Potential matching pin
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Platinum
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Material
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PPS (Ryton)
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Thread
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3/4” NPT
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Cable
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Integral 5m low-noise semi-conductor screened
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Connector
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BNC
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Dimensions: Length (excludes cable)
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151 mm
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Diameter (external)
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26 mm
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Weight
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500 g
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Conductivity Electrode Model: EC91346S
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Product Specification
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Description
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Conductivity range
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Up to 500 mS/cm
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Cell constant, k
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0.3, 4-Cell
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Temperature sensor
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Pt 100, 3-wire
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Pressure rating
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6 bar
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Material
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Ryton, SS 316
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Thread
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3/4” NPT
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Cable
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Integrated 7.6m, 8-wire double-shielded, open
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Dimensions: Length (excludes cable)
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150.5 mm
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Diameter (external)
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22.2 mm
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Weight
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650 g
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Conductivity Electrode Model: ECCS10-0-01T - Up to 20 µS/cm
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Product Specification
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Description
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Conductivity range
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Up to 20 µS/cm
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Cell constant, k
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0.01, 2-Cell
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Temperature sensor
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Pt 100, 3-wire
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Pressure rating
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6 bar
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Material
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Titanium
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Thread
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1/2” NPT
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Cable
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Integrated 7.5m, 6-wire double-shielded, open
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Dimensions: Length (excludes cable)
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168 mm
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Diameter (external)
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12.8 mm
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Weight
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595 g
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Conductivity Electrode Model: ECCS10-0-01S
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Product Specification
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Description
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Conductivity range
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Up to 20 µS/cm
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Cell constant, k
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0.01, 2-Cell
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Temperature sensor
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Pt 100, 3-wire
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Pressure rating
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6 bar
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Material
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SS 316
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Thread
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1/2” NPT
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Cable
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Integrated 7.5m, 6-wire double-shielded, open
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Dimensions: Length (excludes cable)
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168 mm
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Diameter (external)
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12.8 mm
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Weight
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595 g
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Conductivity Electrode Model: ECCS10-0-01S - 0.1 to 200 µS/cm
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Product Specification
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Description
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Conductivity range
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0.1 to 200 µS/cm
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Cell constant, k
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0.01, 2-Cell
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Temperature sensor
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Pt 100, 3-wire
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Pressure rating
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6 bar
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Material
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SS 316
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Thread
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1/2” NPT
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Cable
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Integrated 7.5m, 6-wire double-shielded, open
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Dimensions: Length (excludes cable)
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168 mm
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Diameter (external)
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12.8 mm
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Weight
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595 g
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Conductivity Electrode Model: ECCS10-0-01S - Up to 200 mS/cm
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Product Specification
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Description
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Conductivity range
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Up to 200 mS/cm
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Cell constant, k
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1.0, 2-Cell
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Temperature sensor
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Pt 100, 3-wire
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Pressure rating
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6 bar
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Material
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SS 316
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Thread
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1/2” NPT
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Cable
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Integrated 7.5m, 6-wire double-shielded, open
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Dimensions: Length (excludes cable)
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168 mm
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Diameter (external)
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12.8 mm
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Weight
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595 g
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