OHIZUMI

OHIZUMI MFG.’s thermistors, varistors and thermistor temperature sensors are playing an active role
in comprehensive fields of automotive, household appliances and industrial equipment

Japanese

Thermistor assemblies/Other

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Every product introduced here will be available on a customization basis only.
Wind speed, flow volume of liquids and gases and humidity can be measured, taking advantage of self-heating characteristics of NTC thermistors.

Water level sensor

Water level sensor

Senses
water levels.
For dish
washers,
etc.

Water/liquid level sensors

Water/liquid level sensorsWater/liquid level sensors

Thermistors shall be made self-heated. Their temperature will vary depending on whether there is water. The presence of water will be determined using such characteristics (change in dissipation constant) of thermistors. The reference thermistors can be used for temperature compensation and temperature measurement of water level sensors.

  Zero load resistance B constant Dissipation constant Operating temp. range
Reference value 20KΩ 3950K About 2.3mW/℃ in air 0 to 80℃
For water level detection 2KΩ 3500K About 5mW/℃ in water0 to 80℃ 0 to 80℃

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