Pressure Monitoring

A differential pressure gauge / switch / transmitter can help identify pump issues.  Issues such as too high or low suction or discharge pressures  can be caused by  cavitation, loss of flow, mechanical failure, vibration, and bearing wear. While a switch can provide a warning for a defined pressure point, a 4-20ma transmitter in combination with a computer prediction algorithm can be used to identify an impending problem.

A Diaphragm or Piston type differential pressure instrument can be used to monitor pump performance. The selection of a piston or diaphragm instrument will be dependent upon the process and particulates present in the process.  Please read our Piston vs Diaphragm Article.

Pressure Monitoring

Recommended Models:

Model No. Differential Pressure Range Accuracy Working Pressure Electrical Available Specifications Installation/ Operation Manual Electrical IOM Drawing
Model 140 0-50" H2O to 0-100 PSID 0-50" H2O to 0-399" H2O
±5%
0-15 PSID to 0-100 PSID
±3/2/3%
Up to 3,000 PSI CE / LVD, RoHS Compliant, NEMA 4X, Terminal Strip, Class 1-Div. 1, Class 1-Div. 2, 4-20mA Transmitter N/A
Model 142 0-20" H2O to 0-25 PSID ±3/2/3% Up to 3,000 PSI CE / LVD, RoHS Compliant, NEMA 4X, Terminal Strip, Class 1-Div. 2, 4-20mA Transmitter
Model 120 0-5 PSID to 0-110 PSID ±3/2/3% Up to 6,000 PSI CE / LVD, RoHS Compliant, NEMA 4X, Flying Leads / DIN Connector, Class 1-Div. 1, Class 1-Div. 2
Model 122 0-5 PSID to 0-110 PSID ±5% 3,000 PSI CE / LVD, RoHS Compliant
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