Description
Flared stainless steel tube thermistor temperature sensor
probe, "bullet" style temperature probe for air, gas or liquid.
Typical application coffee maker, tea kettle, water heater boilers,
milk warmer, cooking equipment, and other home
appliance.
NTC Thermistor can be assembled in housing in a variety of
configurations for temperature sensing, measurement, detection,
indicator, monitoring and control. Thermistor temperature sensor
probe assemblies can conveniently attach to or be an integral part
of any system to monitor or control temperature.The choice of
assembly is dependent on the application. The primary factors which
determine the optimum configuration of a thermistor assembly are
the operating environment, mounting, time response and minimum
dissipation constant.
The two factors which do vary considerably with thermistor sensor
probe assembly design are time constant and dissipation constant.
The time constant will typically be of greater duration in
encapsulated thermistors. This is, of course, due to additional
mass surrounding the thermistor element; therefore, extending the
thermal transfer time. Dissipation constant will also be greater in
assemblies. The additional housing mass serves well as a heat sink.
Greater power is therefore required to induce self-heating. Both
time constant and dissipation constant will vary with the selected
thermistor and housing. Heat transfer properties of the housing,
thermistor location, mass and wire type determine these
constants.
The material used for the housing will be dependent upon the
temperature range needed, response time, cost, and special
considerations such as UL, FDA or NSF requirements in food and/or
medical applications. Some of the materials available include
stainless steel, copper, plastic, teflon, brass, aluminum, epoxy
and heat shrinkable tubing.
