Sensor Assemblies | Interchangeable NTC Thermistor Sub-Assembly

Amphenol Thermometrics NTC Interchangeable Thermistor Sub-Assemblies Type A990 Series

Thermometrics A990 Series of Interchangeable NTC Thermistor Sub-assemblies consist of matched pairs of small, glass encapsulated thermistor beads which are connected in either series or parallel circuit configurations. These sub-assemblies are available in a variety of styles which enable them to be used in measuring the temperature of liquids or solids or to be encapsulated into larger housings such as hypodermic needles or closed end sheaths. The sub-assemblies provide interchangeable resistance-temperataure characterisitics in extremely small, fast response packages, which are easy to handle.

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Applications

Type A990B	For insertion into metal housing or close tolerance openings.
Type A990C	Fully immersible sub-assembly for use in conductive fluids.
Type A990D	Limited depth immersion or surface contact, for use in measuring the temperature of liquids or solids.
Type A990E	Fully immersible sub-assembly with additional mechanical strain relief, for use in metal housings for liquid immersion or close tolerance openings.
Type A990M	Sub-assembly encapsulated into sharpened hypodermic needle with 3 ft (1 m) extension leads of #28 GA PVC wire. For use in various laboratory temperature measurements.
Type A990P	Standard sub-assembly encapsulated into vinyl catheter tubing with #28 GA PVC wire extension leads, for use in various commercial applications.
Type A990T	Sub-assembly encapsulated into closed end stainless steel sheath with threaded hub. For use in various commercial applications or severe environments.

Features

Interchangeable resistance-temperature characteristics in extremely small, fast response packages which are easy to handle.
Available from stock and/or with fast delivery.
Resistance, tolerances and temperature ranges, other than those which are indicated, may be available upon special order.
Other assembly configurations may be available upon special order. Please consult the factory for any special requests or modifications.