Polymer Type Relative Humidity (RH) Sensors

Nemoto Relative Humidity Sensors are of the polymer type sensor which retain high performance over a long lifetime. Because the measured resistance value does not increase sharply in the lower humidity ranges, the sensor will retain high accuracy over a larger range of humidity compared with many other similar sensors. The sensors are also very easy to use, because of very low temperature dependence and a narrower distribution of resistance values. The sensor requires a very simple measuring circuit, details of which can be obtained on request

The sensor is available in three variants, optimised for various applications

Measuring range

  10 ~ 90% RH

Operational temperature range

 0 ~ 60 oC

Storage temperature range

  -20 ~ 60 oC

Measuring accuracy

<  ± 5% RH

Recommended Supply voltage

AC 1V

Maximum Supply Voltage

AC 3V

Response Time (T90)

<60 secs

Frequency Range

50 ~ 10,000 Hz

Recommended  Frequency

 1 kHz

Housing material

 ABS resin

The NHS-12 has excellent resistance to low humidity, high temperature/high humidity, and contamination by oils, mists or cigarette smokes etc. The sensor is very suitable for monitoring of living / working areas, and applications such as Greenhouse monitoring

NHS-12


General Purpose Humidity Sensor


NHS-20


General Purpose Humidity Sensor


NHS-25


General Purpose Humidity Sensor


The NHS-20 is similar to the NHS-12, but its measured impedance is higher, giving higher accuracy in high humidity ranges. Applications include the control of  air conditioners, dehumidifiers, humidifiers, and particularly automatic dampers for green houses, etc.

The NHS-25 is similar n operation to the  NHS-20, but is optimised for the highest accuracy at high humidity levels and is specially treated to resist condensation. The sensor is hence particularly suited to applications where the dew point is frequently exceeded.

Measuring range

  20 ~ 95% RH

Operational temperature range

 0 ~ 60 oC

Storage temperature range

  -20 ~ 60 oC

Measuring accuracy

<  ± 5% RH

Recommended Supply voltage

AC 1V

Maximum Supply Voltage

AC 3V

Response Time (T90)

<60 secs

Frequency Range

50 ~ 10,000 Hz

Recommended  Frequency

 1 kHz

Housing material

 ABS resin

Measuring range

  20 ~ 100% RH

Operational temperature range

 0 ~ 60 oC

Storage temperature range

  -20 ~ 60 oC

Measuring accuracy

<  ± 5% RH

Recommended Supply voltage

AC 1V

Maximum Supply Voltage

AC 3V

Response Time (T90)

<60 secs

Frequency Range

50 ~ 10,000 Hz

Recommended  Frequency

 1 kHz

Housing material

 ABS resin