Switch or Relay Humidity Transmitters

Compressed Air Transmitters -- 6740 Series
from Edgetech Instruments Inc.

The 6740 Series incorporates a ±1% maintenance free humidity probe ideal for checking humidity measurements for validation of critical environments. It's rugged, compact and protected by a waterproof aluminum housing. The accuracy of this probe has been tested and proven time and again in... [See More]

  • Electrical Outputs: Current; Switch
  • Dew Point Range: -76 to 86
  • Variables Measured: Relative Humidity; DewPoint
  • Dew Point Accuracy: 3.60
Humidity, Temperature, Dew Point, and Moisture Transmitters -- Indigo 200 Series
from Vaisala

For Vaisala's Smart Humidity, Temperature, Dew Point, Moisture in Oil, CO2 and H2O2 Probes. Vaisala Indigo 200 Series host devices are part of Vaisala Indigo product family and intended for Vaisala's intelligent, stand-alone humidity probes (HMP3, HMP4, HMP5, HMP7, HMP8 and HMP9), dew point probes... [See More]

  • Electrical Outputs: Voltage; Switch
  • Relative Humidity Range: 0.0 to 100
  • Variables Measured: Relative Humidity; DewPoint; Temperature
  • Operating Temp: -40 to 140
Dewpoint and RH Hygrometer -- Optidew
from The Kahn Companies

The Optidew Dewpoint Hygrometer uses fundamental optical dewpoint measurement to provide drift-free long-term performance. It offers a wide measurement range of -76 to +194 °F dewpoint (or 0.5 to 100% relative humidity) at temperatures from -40 to +194 °F. Optidew provides two linear 4 -... [See More]

  • Electrical Outputs: Current; Switch
  • Relative Humidity Range: 0.5000 to 100
  • Variables Measured: Relative Humidity; Absolute Humidity; Moisture Content; DewPoint; Temperature
  • Dew Point Range: -76 to 194
Chilled Mirror Hygrometer -- CR-5
from Buck Research Instruments, LLC

The CR-5 is a chilled mirror hygrometer that uses a 3-stage thermoelectric cooler (TEC) to enable frost point measurements of as low as –60 °C, under favorable ambient conditions. It is configured as a transmitter module with an external sensor connected by cable up to 9 feet in length. [See More]

  • Electrical Outputs: Current; Voltage; Switch
  • Relative Humidity Range: 0.0100 to 100
  • Variables Measured: Relative Humidity (optional feature); Moisture Content; DewPoint; Pressure (optional feature); Temperature (optional feature)
  • Relative Humidity Accuracy: 0.2000
Humid·Alert® HA-1
from Winland Electronics, Inc.

Wall console-type humidity monitoring device with easy to use setting dial. Applications include computer rooms, energy management systems, office areas, museums, document storage areas and greenhouses. With nylon banded sending element, this unit monitors a range of 20% to 80% RH. It requires no... [See More]

  • Electrical Outputs: Switch
  • Relative Humidity Range: 20 to 80
  • Variables Measured: Relative Humidity
  • Relative Humidity Accuracy: 10