Thermistor range with polyimide sleeved variant for medical applications

15-11-2021 | Variohm | Test & Measurement

Variohm EuroSensor has released a new polyimide sleeved, high-tolerance NTC thermistor targeted at high-sensitivity medical instrumentation and industrial temperature measurement applications. Increasing its ENTC thermistor range, the new ENTC-MP-10k3977-01 is especially created for precision sensing of small mid-range temperature changes in non-condensing moisture environment temperature sensing tasks.

The new thermistor is based on the durable epoxy bead EB series encapsulated sensors. Its 1.27mm diameter x 5mm long polyimide sleeve provides robust mechanical properties, high-temperature stability, and excellent chemical resistance and is a broadly used material in applications where durability is a necessity. With a time constant of 15 seconds in still air the thermistor’s resistance at +25C equates to 10kOhm while a 25/85 Beta value constant of 3977K ± with a 0.5% accuracy satisfies fine precision temperature measurement supported with an interchangeability of ±0.1C over a range of 0C to 70C. An operating temperature range of -40C to +90C is specified. The device is supplied with insulated leads – approximately 150mm long with 2 x 30AWG solid copper wires with Kynar insulation. Custom versions can be supplied on request.

The company's recently launched ENTC range covers high-sensitivity NTC thermistors in a selection of hermetically sealed glass or epoxy encapsulation. The range provides a flexible variety of operating temperature, precision, and time constant performance for applications from engine temperature controls to refrigeration, industrial instrumentation, and medical equipment.