NC Sensor

NC Sensor

Non-Contact temperature sensor.

Infrared rays

A generic term for electromagnetic waves whose wavelength is longer than visible light and shorter than microwaves.
Here it represents the infrared radiation that is naturally emitted from all objects having a temperature.
NC sensors convert radiant heat for non-contact temperature sensing.

Thin-Film Thermistor

A thermistor with a temperature sensor of a few dozen μm in thickness that offers high heat resistance, compact size, and fast response.
Two thin-film thermistors paired with high precision NC sensors are used.

For detection

A thin-film thermistor that detects infrared radiation emitted from the measured object.
The detector output voltage fluctuates depending on the temperature of the measured object.

For compensation

A thin-film thermistor mounted in a location unaffected by radiation that detects and compensates for the temperature of the NC sensor itself.
The detector output voltage fluctuates depending on the temperature.

Infrared absorbing material

Absorbs infrared radiation from the measured object and converts it into heat.

Viewing angle

The area where infrared rays can be detected is indicated by the angle.
Depends on the size of the aperture in the sensor through which the infrared rays pass.
The NC sensor outputs the value of all infrared radiation emitted from objects that enter the viewing angle.

Measured object

The object to be measured.


It is the ratio of the infrared radiation energy emitted by an object to the energy emitted by a black body of the same temperature, set to 1.

Blackbody temperature

A blackbody is an idealized object that can completely absorb all external, incoming electromagnetic waves over all wavelengths and can also radiate heat.
The heat source for measuring the output characteristics of the NC sensor is temperature with blackbody paint.

Operating temperature range

Environmental temperature at which NC sensors can be used.

Detection temperature range

Temperature range of the measured object that can be detected by the NC sensor. The range can be expanded by the circuit configuration connected to the sensor. Conversely, it is also possible to detect a small range with high precision.

Table data

Data representing the output characteristics of NC sensors.
The matrix table shows the detection output voltages of the thermistors for detection and compensation.