Mounting
Ensure that no thermo-mechanical stress occurs due to production
processes (curing or
overmolding processes) when thermistors are sealed, potted or
overmolded or during their
subsequent operation. The maximum temperature of the thermistor
must not be exceeded.
Ensure that the materials used (sealing/potting compound and
plastic material) are chemically
neutral.
Electrodes/contacts must not be scratched or damaged
before/during/after the mounting
process.
Contacts and housing used for assembly with the thermistor must be
clean before mounting.
Ensure that adjacent materials are designed for operation at
temperatures comparable to the
surface temperature of the thermistor. Be sure that surrounding
parts and materials can
withstand the temperature.
Avoid contamination of the thermistor surface during processing.
The connections of sensors (e.g. cable end, wire end, plug
terminal) may only be exposed to
an environment with normal atmospheric conditions.
Tensile forces on cables or leads must be avoided during mounting
and operation.
Bending or twisting of cables or leads directly on the thermistor
body is not permissible.
Avoid using chemical substances as mounting aids. It must be
ensured that no water or other
liquids enter the NTC thermistors (e.g. through plug terminals). In
particular, water based
substances (e.g. soap suds) must not be used as mounting aids for
sensors.
Operation
Use thermistors only within the specified operating temperature
range.
Use thermistors only within the specified power range.
Environmental conditions must not harm the thermistors. Only use
the thermistors under
normal atmospheric conditions or within the specified conditions.
Contact of NTC thermistors with any liquids and solvents shall be
prevented. It must be
ensured that no water enters the NTC thermistors (e.g. through plug
terminals). For
measurement purposes (checking the specified resistance vs.
temperature), the component
must not be immersed in water but in suitable liquids (e.g.
Galden).
Avoid dewing and condensation unless thermistor is specified for
these conditions.
Bending or twisting of cables and/or wires is not permissible
during operation of the sensor in
the application.
Be sure to provide an appropriate fail-safe function to prevent
secondary product damage
caused by malfunction.
