Produal - CO Transmitter - HML Series Produal - CO Transmitter - HML Series
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CARBON MONOXIDE (CO) TRANSMITTER HML

Description: The HML carbon monoxide transmitters are specifically designed for detecting carbon monoxide in underground parking garages and parking halls. The measuring cell utilizes an environmentally friendly electro-chemical cell with excellent long-term stability and high accuracy. Each transmitter comes with a calibration report for assurance of accuracy.

These transmitters are capable of operating in temperatures as low as -30°C, thanks to the sensor's heating mechanism. During commissioning, it's important to note the warm-up time; during this time, the output is either 0 V or 4 mA, and the display of the HML-N model blinks.

It's recommended to calibrate the transmitter annually, and the HMV exchange kit can be utilized for this purpose, ensuring the correct functionality of the transmitter. A new calibration report is provided with the exchange kit. Additionally, returning the replaced parts is encouraged to support the reusability of the HMV exchange kit and help keep its price low.

Technical Data:

  • Supply: 24 Vac/dc (22…28 V), 2 VA

  • Range: 0…100 ppm or 0…300 ppm*

  • Accuracy (at 25°C):

    • ±10 ppm for values < 70 ppm
    • ±15% of value for values > 70 ppm
  • Output:

    • 0…10 Vdc < 1 mA* or
    • 4…20 mA < 500 Ω
  • Time Constant (t63%): 1.5 min

  • Warm-up Time: 6 min

  • Operating Temperature: -30…40°C

  • Housing: IP54, cable gland downwards

  • Mounting: By screws

  • Dimensions (w x h x d): 100 x 113 x 46 mm

  • Sensor Lifetime: < 7 years (40% rH, 20°C)

Part Numbers:
HML - Co-Transmitter
HML-N - Co-Transmitter With Display


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