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RH5X Relative Humidity Sensor

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

  • RH5X Relative Humidity Sensor
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Configuration Options

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 - Wind 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 typical from 20% to 80% RH and 5 to 60°C (41 to 140°F)
  • +/- 3% RH Max from 0 to 100% RH )
  • Contact Technical Support for information on additional uncertainty due to temperature effects.
  • +/- 2% RH typical from 20% to 80% RH and 5 to 60°C (41 to 140°F)
  • +/- 3% RH Max from 0 to 100% RH )
  • Contact Technical Support for information on additional uncertainty due to temperature effects.
Calibration Sensors not individually calibrated. NIST-traceable calibration performed to verify individual sensor performs within specified accuracy limits.
Output signal range 0 to 5V for 0 to 100% RH 0 to 5V for 0 to 100% RH
Power requirements  
Supply voltage 12 to 30 VDC 12 to 30 VDC
Supply current 5 mA Max 5 mA Max
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)
Other Recommended range of operation is 5 to 60°C and 20 to 80% humidity. Longterm exposure to conditions outside this range may temporarily offset RH measurements (approximately 3% after 60 hours). Recommended range of operation is 5 to 60°C and 20 to 80% humidity. Longterm exposure to conditions outside this range may temporarily offset RH measurements (approximately 3% after 60 hours).
Physical  
Connections Wire leads, 3 conductor shielded cable:
  • Red: Power
  • Black: Ground
  • White: Signal out
  • Braid: Shield
Wire leads, 3 conductor shielded cable:
  • Red: Power
  • Black: Ground
  • White: Signal out
  • Braid: Shield
Cable length 1.5 m (5 feet) 1.5 m (5 feet)
Weight 0.320 kg (0.71 lbs) 0.320 kg (0.71 lbs)
Dimensions 190 mm (7.5 inches) x 113 mm (4.4 inches) x 69 mm (2.7 inches) 190 mm (7.5 inches) x 113 mm (4.4 inches) x 69 mm (2.7 inches)
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 plastic box with aluminum mounting bracket UV stabilized plastic box with aluminum 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).