Relative Humidity Signal Conditioner/Transmitter Probe
Economical RH Sensor/Transmitter
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- 316 SS Housing
- Accurate to ±4% RH @ 23°C
- 3 Different Output Models: 4 to 20 mA, 0 to 1 Vdc or 0 to 5 Vdc
- Removable Stainless Steel Sensor Cap
- Ideal for Wall or Duct Mounting
HX71-MA Model Options
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Output Type
Supply Voltage Type
Input Type
Input Ranges
Programability
The HX71 Series relative humidity sensor/transmitter provides a reliable and economical method for most relative humidity monitoring applications. The compact design is ideal for wall or duct mounting. Each unit is factory calibrated to provide excellent sensitivity, fast response, and stability. The unit features a simple installation and hookup. The linearized current or voltage output permits interfacing with most display and control devices like meters, controllers, recorders, and data loggers. The design features a 316 SS NEMA 4 (IP66) housing and includes a shielded output cable with stripped wire leads. A mounting kit is available that allows for wall or duct mounting.
SPECIFICATIONS
Accuracy RH:@23°C ±4% RH from 15 to 85%RH; ±4.5 % RH below 15 and above 85%RH
Note: For Optimum performance, Unit should be operated in >1 MPH of moving air.”
Input Voltage Range
Model HX71-MA: 8 to 12 Vdc (polarity protected)
Model HX71-V1, HX71-V2: 8 to 24 Vdc (polarity protected)
Output:
HX71-MA: 4 to 20 mA for 0 to 100% RH
HX71-V1: 0 to 5 Vdc for 0 to 100% RH
HX71-V2: 0 to 1 Vdc for 0 to 100% RH
Wiring:
HX71-MA:
Red Wire: + power
Black Wire: + output/return
HX71-V1, HX71-V2:
Red Wire: + power
Black Wire: - power/output
White Wire: + output
RH Temperature Compensation: -25 to 85°C (-13 to 185°F)
Repeatability: ±1% RH
Housing: 316 stainless steel
Connections: 2 m (6') shielded cable, stripped leads, PVC sheath
Dimensions: 130 x 16mm D (5.125 L X .625" D)
Weight: 67 g (0.18 lbs)
SPECIFICATIONS
Accuracy RH:@23°C ±4% RH from 15 to 85%RH; ±4.5 % RH below 15 and above 85%RH
Note: For Optimum performance, Unit should be operated in >1 MPH of moving air.”
Input Voltage Range
Model HX71-MA: 8 to 12 Vdc (polarity protected)
Model HX71-V1, HX71-V2: 8 to 24 Vdc (polarity protected)
Output:
HX71-MA: 4 to 20 mA for 0 to 100% RH
HX71-V1: 0 to 5 Vdc for 0 to 100% RH
HX71-V2: 0 to 1 Vdc for 0 to 100% RH
Wiring:
HX71-MA:
Red Wire: + power
Black Wire: + output/return
HX71-V1, HX71-V2:
Red Wire: + power
Black Wire: - power/output
White Wire: + output
RH Temperature Compensation: -25 to 85°C (-13 to 185°F)
Repeatability: ±1% RH
Housing: 316 stainless steel
Connections: 2 m (6') shielded cable, stripped leads, PVC sheath
Dimensions: 130 x 16mm D (5.125 L X .625" D)
Weight: 67 g (0.18 lbs)
Rated 5 out of
5
by
oventec from
Great product
We use this product for some equipment. Laboratory, food, industrial, etc.
Date published: 2015-12-05
Rated 5 out of
5
by
HControls from
Solid product
I bought this unit last month and I'm extremely impressed with the build quality and performance. Easily one of the best performing sensors in this price range I've purchased.
Date published: 2016-03-24
If 24 volts runs through the signal wire, will it mess up the sensor?
HX71-MA requires 8 to 12 VDC supply. 24 VDC on supply could damage the unit.
HX71-V1 and HX71-V2 require 8 to 24 VDC supply.
Date published: 2019-09-03
Hi, I want to know what is the pressure range that the sensor works.
This transmitter is designed and calibrated for non pressurized environment.
Date published: 2019-09-03
We are going to put one of these sensors in somewhat dusty environment. Previously we had a HX71-V1 RH Sensor and it came with a protective cap made of some white porous material. I am wondering if there is such item for the current sensor?
You can purchase the IP-SC which is a porous stainless steel cap.
Date published: 2020-08-26
is HN71-V1 model waterproof?
Thank you for your inquiry kadasd. No, the HX71-V1 is not waterproof.
Date published: 2021-07-08
What is the temperature range that this sensor can be subjected to without damage either powered or unpowered? I want to use this sensor in a temperature / humidity chamber that can operate from -70C to 180C and want to make sure it would not be damaged.
Hi da4380,
Thank you for the inquiry. Operating temperature range is -25 to 85ºC (-13 to 185ºF) non condensing environment. Formation of frost would also drive the sensor in to over range condition.
Best regards
OMEGA
Date published: 2021-11-16
If this probe is subjected to -75C while powered but not being used to measure humidity, will it perform properly when it comes back to its operating temp? Likewise if it is subjected to 180C will it perform properly when it returns to its operating temp?
Hi DA4380
Thank you for the inquiry. Temperature exposure beyond operating limits may cause shift in calibration or damage to components.
Best regards
OMEGA
Date published: 2021-11-29
