Product category:
Monitoring and sensor equipment and systems
News Release from: Celsum Technologies | Subject: NE74 Series Miniature Differential Pressure Sensor
Edited by the Manufacturingtalk Editorial
Team on 30 November 2004
Miniature differential pressure sensor
is rugged
Miniature differential pressure sensor, with a wide range of full-scale sensitivities, uses variable reluctance technology and features extremely rugged assembly with excellent reliability figures.
Celsum Technologies now offers the NE74 Series Miniature Differential Pressure Sensors These are available with pressure ranges from +/-150 millibars (+/-2 lb/in2) through to +/-100 bars (+/-1,500 lb/in2) have a 10-times full-scale over-range capability, and will operate at line pressures up to 400 bars (5,800 lb/in2) in differential mode
This article was originally published on Manufacturingtalk on 25 Jul 2008 at 8.00am (UK)
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They can be supplied in both True Differential and Absolute versions, and calibrated in bars or lb/in2.
The standard version is manifold mounting, with a wide range of optional threaded connectors.
The NE74 pressure sensor uses Variable Reluctance Technology and consists in essence of a diaphragm of magnetic material that is centrally disposed between two fixed coils, the coils being potted in a high temperature resin and sealed via a welded stainless steel shim.
This completely isolates the coil from the pressure medium.
The diaphragm is machined from a solid, forged section and electron-beam welded to the end pieces.
This construction results in an extremely rugged assembly with superb environmental characteristics and excellent reliability figures (100,000 hours MTBF).
On application of a differential pressure, the diaphragm is deflected, resulting in an increase in the inductance of one coil and a corresponding decrease in the other.
This is detected by simple external AC conditioning electronics.The NE74 transducers weigh only 100 grammes, are virtually insensitive to shock and vibration, and employ an all-welded 17-4PH stainless steel construction.
Said Richard Carter, Celsum Technologies' Marketing Manager, "The NE74 Series Differential Pressure Sensors were developed originally for down-hole applications in the oil and gas exploration industries, but their small size, ruggedness, reliability and wide range of full-scale sensitivities makes them ideal for a plethora of tasks in Research and Development and in OEM machines." Typical applications include differential pressure measurement in down-hole installations and depth measurement in high temperature and high vibration environments. Request a free brochure from Celsum Technologies ...
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