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How It Works Shipping Fee Terms of Use

Model RHT Temperature and Humidity Sensor

Application

  • Temperature and humidity control in food processing facilities
  • Temperature and humidity control in greenhouses/fermentation chambers
  • Temperature and humidity control in air-conditioning equipment
  • Temperature and humidity control in pharmaceutical factories
  • Temperature and humidity control in clean rooms
  • Temperature and humidity control in museums, sample chambers, warehouses
  • Temperature and humidity control for musical instruments
  • Temperature and humidity control in plant factories

Features

  • Small-sized high precision sensor
  • Output of 4 mA to 20 mA DC and 1 V to 5 V DC are available for instrumentation.
  • Rigid protective structure assures safe use in environments exposed to dust particles or moisture.
  • Easy to install using three M3 screws.

International Standards

  • Our products do not have overseas safety regulations such as CE mark, UL standard, EN standard etc.
  • Products is compliant to the RoHS directive.

Rating/Performance / Characteristics Graph (Typical Example)

Rating/Performance

Model RHT-20A RHT-20V RHT-21A RHT-21V
Detection Sensor Humidity / Temperature
Measurable Humidity Range
0 to 100 % RH
Humidity Accuracy ± 3 % RH at 25 ºC : 20 to 80 % RH ± 2 % RH at 25 ºC : 20 to 80 % RH
Humidity Response Time
30 sec
Measured Temperature Range
-30 ºC to 80 ºC
Temperature Accuracy ± 0.5 ºC (at 25 ºC)
Power Voltage 12 V to 24 V DC (Operating voltage range: 10 V to 30 V DC)
Power Consumption 400 mW max. - 400 mW max. -
Current Consumption - 5 mA DC max.  - 5 mA DC max. 
Output Signal 4 mA to 20 mA DC 1 V to 5 V DC 4 mA to 20 mA DC 1 V to 5 V DC
Load Resistance 300 Ω max. 100 kΩ min. 300 Ω max. 100 kΩ min.
Storage Temperature 0 to 50 °C (-10 to 55 °C during storage)
Storage Humidity 30 to 80 % RH (30 to 85 % RH during storage)
Breakdown Voltage 500 V AC, 50/60 Hz for 1 min (Between live parts and the case)
Insulation Resistance 50 MΩ or more, at 500 V DC megger (Between live parts and the case)
Vibration Resistance Durability : 10 to 55 Hz, Double amplitude: 1.5 mm in X-, Y-, and Z-direction, each 2 hours
 (Device not powered)
Shock Resistance Durability : 500 m/s² (Approx. 50 G) in X-, Y-, and Z-direction, each 3 times (Device not powered)
Ingress Protection IP64
Case Material PC
Cable ø4, 4-core round cord of 0.3 mm² and insulation 1.35 mm and 1 m in length (oil and heat resistant)
Weight Approx. 33 g

Characteristics Graph (Typical Example)

RHT_Humidity Characteristics.jpg


RHT_Temperature Characteristics.jpg

Dimensions / Output Circuit

Dimensions

RHT_Dimensions.jpg

Output Circuit

RHT_Output Circuit.jpg

Precautions during use

Precautions during use

  • To maintain accuracy of the sensor, recommended storage is as follows:
            Temperature Range: 10 ºC to 50 ºC
            Humidity Range: 20 % to 60 % RH
    Do not use polyethylene antistatic bags (light blue, pink or rose pink color)
  • The value of relative humidity depends strongly on temperature.
    When measuring ambient temperature/humidity, be sure that there are no components generating heat at or near to the sensor mountings.
  • When turning on the power and switching the RH/T selection input, start reading after 800 ms or more as the output signal stabilization wait time.
  • Use M3 pan head screws for mounting. The tightening torque for the case should be 0.32 N·m.
  • Be sure not to bend the sensor cables in the vicinity of the sensor.
  • For other precautions, refer to “General Precautions” for temperature/humidity sensors.


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*For customized products or specifications, contact us using "Inquiry."
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Model Name Humidity precision Standard Price Inventory Type Select
RHT-20A ± 3 %
5,560 JPY
50 USD
44 EUR
STD
RHT-21A ± 2 %
7,160 JPY
64 USD
56 EUR
STD
Model Name Humidity precision Standard Price Inventory Type Select
RHT-20V ± 3 %
5,090 JPY
46 USD
40 EUR
STD
RHT-21V ± 2 %
6,660 JPY
60 USD
53 EUR
STD

STD Shipping is available immediately (on the day of order)

WIP Shipping is available within 1 to 3 weeks

BTO Shipping is available within 4 to 10 weeks

NOTE: The above information shows the typical delivery time. For actual delivery time, please confirm us as it depends on our business days and/or product quantities.

In the case of the quote request and order, please be sure to check the Terms and Conditions.
If you have made the procedure of quote request and order, it assumes that agree to the Terms and Conditions.

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Temperature and humidity sensor

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