Pressure sensor stops pumps running dry
A
Robbins and Myers product story
Edited by the Engineeringtalk editorial team
Jun 10, 2005
A nonintrusive pressure sensor which protects pumps from both dry-running conditions and high-pressure situations, has been introduced by Robbins and Myers.
A nonintrusive pressure sensor which protects pumps from both dry-running conditions and high-pressure situations, has been introduced by Robbins and Myers.
The RM pressure sensor is designed to be fitted at the pump outlet which is regarded as the most effective way of preventing dry running, as opposed to other traditional "presence/absence" detectors, stator temperature probes and other intrusive devices.
Although progressing cavity pumps are acknowledged as one of the most versatile pump designs available, providing benefits such as ability to handle abrasive fluids with minimum wear, precisely meter viscous liquids and gently transfer shear sensitive products, they do need to be protected from running dry and closed valve situations (as do most pump types).
However, the R and M pressure sensor is an effective way for users to protect their positive displacement pumps or other process equipment subjected to running-dry conditions or high/low pressures.
The sensor consists of three basic components; sensor, pressure switch and control box.
It is very easy to install and fits between two standard pipe flanges, allowing complete fluid flow without obstruction.
Pressure detection over the entire pipe circumference ensures that coating, settled material, or bridging does not affect pressure readings.
As an added feature, a liquid filled gauge allows visual monitoring of pressure conditions within the pumping system.
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