Room Humidity & Temperature Transmitter – RHT-Series

Description

The RHT-Series Room Humidity & Temperature Transmitter is designed for precise measurement and monitoring of air humidity and temperature. The device converts these measurements into standard signals of 0-10 Vdc or 4-20 mA, making it compatible with various control systems.

Available with or without an LCD display, the RHT transmitter is suitable for non-aggressive, dust-free environments in applications such as refrigeration, air conditioning, ventilation, and clean room technology. Common applications include residential rooms, offices, hotels, meeting rooms, and convention centers.

  • Features

    • Combined Outputs: Humidity and temperature measurements in a single unit.
    • Display Option: Available with or without an LCD display for real-time monitoring.
    • Output Signals:
      • Humidity: 0-10 Vdc or 4-20 mA.
      • Temperature: 0-10 Vdc or 4-20 mA.
    • Passive Temperature Output (Optional): PT1000, PT100, NTC 10K, NTC 20K, NTC 1.8K, NI1000, and more.
    • Measurement Accuracy:
      • Humidity: ±2% at 20-80% rH.
      • Temperature: ±0.5K.
    • Selectable Parameters via DIP Switch:
      • Relative Humidity.
      • Absolute Humidity.
      • Dew Point.
      • Enthalpy
  • Different Types

    • RHT 010 010:
      Humidity output 0-10 Vdc, Temperature output 0-10 Vdc.
    • RHT 420 420:
      Humidity output 4-20 mA, Temperature output 4-20 mA.
    • RHT 010 010 XXX:
      Humidity output 0-10 Vdc, Temperature output 0-10 Vdc.
      XXX means a passive temperature sensing element as example NTC 10K or PT1000
    • RHT 420 420 XXX:
      Humidity output 4-20 mA, Temperature output 4-20 mA.
      XXX means a passive temperature sensing element as example NTC 10K or PT1000

    With LCD Display

    • RHT 010 010 D:
      Humidity output 0-10 Vdc, Temperature output 0-10 Vdc.
    • RHT 420 420 D:
      Humidity output 4-20 mA, Temperature output 4-20 mA.
    • RHT 010 010 D XXX:
      Humidity output 0-10 Vdc, Temperature output 0-10 Vdc.
      XXX means a passive temperature sensing element as example NTC 10K or PT1000
    • RHT 420 420 D XXX:
      Humidity output 4-20 mA, Temperature output 4-20 mA.
      XXX means a passive temperature sensing element as example NTC 10K or PT1000
  • Passive Temperature Sensing Elements (XXX Options)

    • PT100, PT100 1/3 DIN.
    • PT1000, PT1000 1/3 DIN.
    • NI1000, NI1000/TK5000.
    • NTC 1.8K, NTC 5K, NTC 10K, NTC 20K.
    • KTY81-210.

    Example

    For a model with a humidity output of 0-10 Vdc, temperature output of 0-10 Vdc, PT1000 passive sensing element, and an LCD display, the type would be:
    RHT 010 010 PT1000 D.

  • Applications

    • Refrigeration, air conditioning, and ventilation systems.
    • Clean room technology.
    • Residential, commercial, and technical spaces such as offices, hotels, and meeting rooms.

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