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RH5X Relative Humidity Sensor

The RH5X is a low-cost continuous measurement relative humidity sensor.

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RH5X Relative Humidity Sensor

#4415

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RH5XC Relative Humidity Sensor

#8811

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The RH5X sensor is compatible with all Symphonie series data loggers when equipped with an NRG iPack and either a Symphonie® SCM Card (SCM #3156, used with SymphoniePLUS®3 Data Logger and older) or a Pro Signal Conditioning Module (P-SCM #9132, used with SymphoniePRO® Data Logger when channels 16-19 are unavailable).

The RH5X features a polymer resistor sensor, which provides excellent linearity and sensitivity with fast response time and long-term stability. It mounts to the underside of a shelter box and includes 1.5 m (5’) of cable, a mounting bracket, and one hose clamp.

A calibrated version, the RH5XC, is available. The RH5XC comes with a calibration certificate from a NIST-traceable humidity chamber, providing slope and offset values that can be used to configure your corresponding logger channel.

  RH5X Relative Humidity Sensor (#4415) RH5XC Relative Humidity Sensor (#8811)
Description  
Sensor type Polymer capacitor humidity sensor Polymer capacitor humidity sensor
Applications
  • Wind resource assessment
  • Meteorological studies
  • Environmental monitoring
  • Wind resource assessment
  • Meteorological studies
  • Environmental monitoring
Sensor range 0 to 100% relative humidity (non-condensing) 0 to 100% relative humidity (non-condensing)
Instrument compatibility Any Symphonie Data Logger Any Symphonie Data Logger
Output signal  
Signal type Linear analog voltage Linear analog voltage
Transfer function % Relative Humidity = Voltage x 20
  • Refer to individual calibration supplement for sensor-specific transfer function
  • Default values: % Relative Humidity = Voltage x 20
Accuracy
  • +/- 2% RH (k=2) from 10% to 90% RH @ 25°C (77°F)
  • +/- 3% RH (Maximum) from 5% to 10% RH and 90% to 95% RH@ 25°C (77°F)
  • Contact Technical Support for information on additional uncertainty due to temperature effects.
  • +/- 2% RH (k=2) from 10% to 90% RH @ 25°C (77°F)
  • +/- 3% RH (Maximum) from 5% to 10% RH and 90% to 95% RH@ 25°C (77°F)
  • Contact Technical Support for information on additional uncertainty due to temperature effects.
Output signal range 0 to 5V for 0 to 100% RH, with a load resistance greater than 10 k ohms 0 to 5V for 0 to 100% RH, with a load resistance greater than 10 k ohms
Power requirements  
Supply voltage 10 V to 30 V DC, 12 V at 2.6 mA typical 10 V to 30 V DC, 12 V at 2.6 mA typical
Installation  
Mounting Uses a sheet metal bracket with a hose clamp, to be mounted to the tower, under the shelter box Uses a sheet metal bracket with a hose clamp, to be mounted to the tower, under the shelter box
Tools required 8 mm (5/16 inch) nut driver or wrench 8 mm (5/16 inch) nut driver or wrench
Environmental  
Operating temperature range -40°C to 70°C (-40°F to 158°F) -40°C to 70°C (-40°F to 158°F)
Operating humidity range 0 to 100% relative humidity (non-condensing) 0 to 100% relative humidity (non-condensing)
Physical  
Connections Wire leads, 3 conductor shielded cable:
  • Red: Power
  • Black:Ground
  • White: Signal out
Wire leads, 3 conductor shielded cable:
  • Red: Power
  • Black:Ground
  • White: Signal out
Cable length 1.5 m (5 feet) 1.5 m (5 feet)
Weight 0.23 kg (0.51 lbs) 0.23 kg (0.51 lbs)
Dimensions 94 mm (3.7 inches) x 94 mm (3.7 inches) x 56 mm (2.2 inches) enclosure dimensions, without the bracket or shroud 94 mm (3.7 inches) x 94 mm (3.7 inches) x 56 mm (2.2 inches) enclosure dimensions, without the bracket or shroud
Materials  
Cable 3 conductor 22 AWG, with overall foil shield and drain wire, chrome PVC jacket 3 conductor 22 AWG, with overall foil shield and drain wire, chrome PVC jacket
Enclosure UV stabilized polycarbonate plastic box with galvanized steel mounting bracket UV stabilized polycarbonate plastic box with galvanized steel mounting bracket
Hose Clamps

Hose Clamps

Secure mounting booms to NRG TallTowers™ with hose clamps sized specifically for your tower tube.

Symphonie® SCM Card

Symphonie® SCM Card

Condition your sensor’s output signal so that a SymphoniePLUS3 Data Logger can read it by installing a Symphonie Signal Conditioning Module (SCM).