Proximity probes survive 240C heat
A
Sensonics product story
Edited by the Engineeringtalk editorial team
Jun 20, 2007
Sensonics range of Senturion Proximity Probes are suited to use on steam and gas turbines, centrifuges and pumps.
Sensonics' range of Senturion proximity probes has been extended to include an instrument capable of operating at temperatures of 240C.
Used to monitor rotating shaft alignment and axial position, particularly on steam and gas turbines, centrifuges and pumps, Sensonics proximity probes provide a range of noncontacting measurement configurations and comply with the API 670 standard.
Available in a selection of body and cable lengths, the new PRS05 model from Sensonics offers a 0 to 5mm measurement range in a 12mm tip (M18 body) configuration and operates above the range of standard probes, which can experience excessive drift where temperatures exceed 150C and typically will be manufactured in materials only suitable for occasional operation up to 200C.
Temperatures in many applications can rise above this 200C ceiling for long periods at a time in the locality of the probe, such as during turbine run up where steam leaks are prevalent.
It is key that measurement accuracy is maintained for both thrust and shaft vibration measurements as the turbine thermal characteristics stabilise.
The new PRS05 solution maintains a measurement error of less than 5% over the full working temperature range.
Rugged and reliable, the new probe incorporates a glass-filled PPS bobbin case rated to 300C, which is both oil and chemical-resistant.
A bobbin expansion chamber and wire strain relief techniques for the cable interface are just two of the design enhancements incorporated to achieve the 240C rating.
The instrument is supplied with a standard 0.5m of high-temperature PTFE cable and is used in conjunction with a co-axial extension cable, supplied as a tuned system with a driver unit.
Other instruments in the standard Senturion range include straight mount, reverse mount and disc probes offering measurement ranges up to 25mm.
There is an extensive selection of ancillary items additionally supplied by Sensonics, including brackets, glands and housings for probes and drivers.
The company also provides an advice, installation and commissioning service.
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Contact Sensonics
Tel +44 1442 876833
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