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Product category: Temperature sensors
News Release from: Betatherm Ireland | Subject: BetaLinear thermistors
Edited by the Engineeringtalk Editorial Team on 06 August 2003

Thermistors provide linear output

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A novel standard linear series of NTC thermistor probes maintains high sensitivity and greatly simplifying the interface to analogue and digital circuits.

Betatherm has introduced what it believes is the world's first standard linear series of NTC thermistor probes, maintaining a high sensitivity and greatly simplifying the interface to analogue and digital circuits Betatherm's new BetaLinear thermistors, available from Sequoia, are based on a combination of precision resistors and thermistors, which together generate a linear response to temperature

The linear composite typically consists of two or three sensor elements; the most popular being (36K53A1) which uses two thermistor elements (30K5 and 6K3) and appropriate resistors which give a linear output over the range 0-100C.

The circuit designs can accommodate a wide variety of circuit mounting options.

These include custom probes assemblies for the thermistor sensing elements and mounting precision resistors at board level in a control module.

It is also possible to package the thermistors and resistors which form the linearisation circuit in a single probe construction.

These linear thermistor networks are ideally suited for temperature measurement and control in the range from -30 to +100C.

They are easily interfaced to both analogue and digital circuitry.

The BetaLinear Series can be configured in either resistance or voltage mode where they can provide up to 10 times the voltage output of a thermocouple sensor.

Thermistor accuracy, depending on construction, is +/-0.3C from 0 to 70C.

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