Gas and Chemical Sensors / Detectors
ORP and pH Sensors have differential design.
Press Release Summary:
Constructed with glass electrode that is not prone to chemical attack, WDS Series differential pH and ORP sensors transmit signals up to 3,000 ft and are resistant to ground loop problems. Sensors can be replaced if reference solution becomes contaminated or salt bridge becomes clogged. Reference electrode is constructed from pH glass and is embedded in pH 7 buffer within sensor behind porous, replaceable salt bridge.Original Press Release:
pH and ORP Sensors with Field Proven Differential Design
March 2004 - WALCHEM CORPORATION, Holliston, MA, introduces the WDS Series differential pH and ORP sensors. Designed for long-lasting and reliable industrial applications, the WDS has a replaceable salt bridge for long life and transmits signals up to 3,000 feet (915 meters). It is also resistant to ground loop problems.
Walchem's WDS sensors are easily replaced if the reference solution becomes contaminated or the salt bridge becomes clogged. Reliability of WDS is enhanced since the glass electrode is not prone to chemical attack as a silver/silver chloride reference electrode is.
The differential measurement technique uses two electrodes, one for process measurement and the other for reference measurement. Each electrode is measured differentially with respect to a third metal electrode. The reference electrode is constructed from pH glass and is embedded in pH 7 buffer within the sensor behind a porous, replaceable salt bridge. Offered are Walchem's preamplifier models which are compatible with Walchem controllers and conventional preamplifier models which are compatible with GLI and AquaMetrix (Lisle Metrix) controllers.
For more information, please contact Walchem Customer Service.
Walchem Corporation
Customer Service
Tel: 508-429-1110
info@walchem.com
www.walchem.com
