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Product category: Temperature sensors
News Release from: Betatherm Ireland | Subject: Glass-bead fast-time-response probes
Edited by the Engineeringtalk Editorial Team on 28 November 2003

Speedy thermistor probe responds in 30ms

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A new range of ultra-fast-response thermistor probes features typical response times of less than 30ms in liquids, making them ideal for medical applications.

A new range of ultra-fast-response thermistor probes features typical response times of less than 30ms in liquids, making them ideal for medical applications, monitoring of exceptionally small volumes, and other situations where a fast time response is critical The new Betatherm glass-bead fast-time-response probes, available from Sequoia, feature a glass thermistor bead that extends from the tube, minimising thermal mass and optimising time response characteristics, and keeping the overall bead diameter to only 0.38mm

The resulting probe is ideal for incorporation into medical catheters or hypodermic syringes, and can be used in other small housings, or to measure the temperature of very small volumes of fluid.

The miniature probe consists of a hermetically sealed glass-encapsulated thermistor welded to insulated extension leads.

The welded joints are potted in a polyimide tube with an epoxy compound, to provide general protection and strain relief.

Betatherm is offering the thermistors in industry standard resistance values, with custom lead types and lengths available.

Typical dissipation constant for these thermistor probes is 0.3mW/C in air.

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