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[April 2007]
Alumina Diaphragm Used in Pressure Transmitters
Sensit liquid depth measurement transmitters from Roxspur Measurement & Control (RM&C) have been successfully used for the measurement of leachate levels in landfill sites.
The Sensit Trident series units are rugged 29mm diameter pressure transmitters for monitoring liquid depth in boreholes, tanks or sumps. The transmitter cable incorporates a strain wire to support the weight of the sensor, which is then lowered into the liquid. A vent tube built into the cable provides the atmospheric pressure reference.
All RM&C Sensit pressure sensors use a high purity ceramic diaphragm as the active face and are available with ranges from 1m to 500m water gauge.
Standard accuracy is +/-0.25%, with +/- 0.1% available as an option, and long-term stability is better than 0.1% over 12 months.
For use in the corrosive conditions met when monitoring waste leachate levels, the Sensit Trident units are built with a DUPLEX stainless steel body, polyurethane cable, Chemraz seals and an acetal nose cone protecting the alumina ceramic diaphragm from blockage.
The units are said to be intrinsically safe, CE compliant, with lightning protection built-in.
The sensor can be optionally calibrated with an output in bar, PSI or liquid depth measure, using a specified SG.
All Roxspur Measurement & Control 'Sensit' products are manufactured in the UK and supported by the RM&C sales and service network.
www.roxspur.com
ENDS