temperature/humidity Transmitter R320

The R320 series is a wet-and-dry-bulb temperature/humidity sensor. Since it does not have a ventilation system, it is intended for measuring temperature/humidity in places such as ducts where the wind speed is always 3 m/s or more.
The two temperature detecting element, one for the dry bulb and one for the wet bulb, use platinum resistance thermometer.

Ideal for use in chambers and ducts where the wind speed is always 3m/s or more

The following four types are available, taking into consideration the usage environment and conditions.

  • R320 (standard type)
    The flange defines the boundary between the water pot and detecting element on the inside and terminal box and water tank on the outside.
  • R321 (automatic water supply type)
    It is suitable for use in places with high temperatures and low humidity where water consumption is rapid.
    A continuous supply of water can be provided by connecting the pipes to a water supply or tank.
    There is a float switch inside the water pot to detect the water level, which opens and closes the solenoid valve to keep the water level constant.
  • R322 (inner wall mounting type)
    The water pot, detecting element, terminal box, etc. are all structure inside.
    Instead of a water tank, it comes with a large water pot.
  • R323 (internal pressure adjustment type)
    This is used when there is a pressure difference between the inside and outside, and is a standard type with a pressure equalizing tube attached to keep the water level in the water pot at a specified position.

Specifications

Model list

Model Number of elements Models
General form 1 pair R320-30
2 pairs R320-30W
Automatic water supply type
(Solenoid valve type)
1 pair R321-30
2 pairs R321-30W
Inner wall mounting type 1 pair R322-30
Internal pressure adjustment type 1 pair R323-30

*The above is for a 5m lead wire, but 10m is also available.
*We also offer the "HN-G series temperature temperature/humidity computation" which can be combined with the R320 series to display temperature and humidity simultaneously.

General specifications

Measurement range Relative humidity: 20 to 100%rh
Temperature: 0 to 100°C
Accuracy ratings Relative humidity: ±2%rh
Temperature: ±0.3℃ (at 0℃)
(Ventilation speed 3m/s or more)
resistance thermometer Pt100 (JPt100) 3-wire
Water Pot R320, R321, R323…60ml, R322…400ml
Measurement conditions Ambient temperature: 0 to 60°C
Power supply designate either 100V AC or 200V AC, 50/60Hz

Download Documents & Softwares

Catalog

Specification Sheet (PS Sheet)

  • English) R220/R320 温湿度発信器
    ファイルサイズ2MB
    Document No.
    PSE-200
  • HN-G series temperature/humidity computation
    ファイルサイズ1MB
    Document No.
    PE-66-1
  • temperature/humidity transmitter/ temperature/humidity converter
    ファイルサイズ2MB
    Document No.
    PE-10-15

CAD Data

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  • HN-G series temperature/humidity computation (2DCAD/dxf file)
    ファイルサイズ2MB
    Downloads

Instruction Manual

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  • temperature/humidity Transmitter R320
    File size 922
    Models
    R320
    Document No.
    R-220-11-8
    Downloads
  • English)HN-GR For temperature humidity transmitter R220 series ・ R320 series Temperature humidity converter
    ファイルサイズ1MB
    Models
    HN-GRBF1,R220,R320
    Document No.
    NHNG-99102-P0
    Downloads

Softwares

Application Examples

RelatedInfo

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FAQ

If you have any problems with temperature control,
 please feel free to contact us.

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