Controlling air quality in control rooms, offices and plant rooms requires CO2, humidity and temperature to be measured together. The RK-CHM-D covers CO2 from 40 to 10000 ppm, relative humidity from 10 to 95 % and temperature from -10 to +50 °C, and outputs all readings via Modbus RTU.
Benefits
- Three quantities in one room unit: CO2, relative humidity and temperature.
- Backlit 2.3 inch TFT color touch display for setting corrections and target values right on the device.
- Up to four of 68 operating modes selectable, and the host system can drive status symbols on screen.
- Galvanically isolated RS-485 interface with Modbus RTU for building management and monitoring.
- Mounts directly on the wall or on an installation box with 60 mm hole spacing.
Technical data
| CO2 | 40-10000 ppm, accuracy ±30 ppm ±3 % of range, resolution 1 ppm |
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| Temperature | -10 to +50 °C, accuracy ±0.5 °C (20 to 40 °C), ±1 °C (0 to 50 °C), resolution 0.1 |
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| Relative humidity | 10-95 % RH, accuracy ±3 % (20 to 80 % RH), resolution 0.1 |
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| Sensor technology | semiconductor |
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| Number of values | 4 |
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| Interface | RS-485, Modbus RTU, galvanically isolated |
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| Display | 2.3 inch TFT color display, backlit, touch |
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| Connection | terminal block |
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| Power supply / consumption | 12-30 V / 200 mA |
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| Operating conditions | -10 to +50 °C, 10-95 % RH |
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| Storage conditions | -10 to +50 °C, 10-95 % RH |
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| Dimensions (W x H x D) | 103 x 100 x 25 mm |
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| Mounting | wall, installation box with 60 mm hole spacing |
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| Warranty | 24 months |
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| Manufacturer part number | 600887 |
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Applications
- Control rooms, NOC rooms and offices in data centers
- Plant rooms and server rooms where staff are present
- Indoor climate monitoring in industry and food processing
- Wide-area measuring networks with many points
Scope of delivery
- HTemp CO2 485-RTU RK-CHM-D room sensor