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Loop Powered Humidity Transmitter HUMI-218:


The Loop powered Humidity Transmitters HUMI-218 are microprocessor based programmable transmitters which are used for recording of humidity values.

Salient Features:

  • Highly accurate Digital technology sensor gives fast and reliable output.
  • Relative Humidity range is 0 to 100% RH with accuracy of ±2% RH.
  • Long term stable output for Humidity.
  • Digital Display of Humidity with its Unit.
  • Standard 4-20 mA signal output with configurable range.
  • Easy handling & programming with 3 keys for WP models.
  • Non- intrusive programming for flameproof models using Magnetic Wand.
  • Software calibration for Humidity.
  • Compact size, can be easily installed.

Technical Specifications:

  • General:
    Detection Method: Advance CMOS Sensor Technology.
    Range/Resolution: For Relative Humidity 0 to 100%RH with 0.1 Resolution
    Display: 2-Line, 4×2 LCD Display
    Control Action:  Two independent Alarm set points for indication purpose.
    Setting: By 3 keys on front panel for WP model By using Magnetic Wand for flameproof mode Accuracy & Performance
  • Accuracy & Performance:
    Accuracy: ± 2 % RH
    RTC: ± 60 seconds per month
    Sampling Interval: 3 seconds
  • Electrical:
    Supply voltage: 18 to 36 VDC; Typically 24VDC
    Power consumption: Less than 0.6 Watts
    Cable: 3 wires (1.5 mm²) flexible or armoured shielded cable.
  • Output Signal:
    Standard: Loop 4-20mA current output with configurable range selection.
    Load resistance: 680 ohm at 24 VDC.
  • Environmental:
    Operating Temp.: -15 to +55°C
  • Accessories:
    CE certified 24 VDC power supply.
  • Flameproof Housing:
    Protection class: IP-66
    Cabinet material: Cast aluminium alloy, LM-6
    Cable entry: Double compression cable gland (EX-proof M20 X 1.5,½ “NPT &¾ “ ET-type
    Dimension: 255mm(H) with sensor holder X 230mm(W) with stopper plug &Cable gland X 125 mm(D)
    Mounting: Wall / Stand / Pipe
    Weight: Approximately 2.53kg
  • Weatherproof Housing:
    Protection class: IP-65
    Cabinet material: Polycarbonate ,Grey Colour
    Cable entry: Thermoplastic cable gland (IP-68)
    Dimension: 215mm(H) with sensor holder ×100 mm(W)with stopper plug & cable gland ×80 mm(D)
    Mounting: Wall Mounting/ Stand Mounting
    Weight: Approximately 300grams


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