HDU transmitters are designed for detecting CO₂ concentration and temperature in underground parking garages and parking halls. ABCLogic™ self-calibration method eliminates the possible long term drift.
| Supply | 24 Vac/dc, < 10 VA |
| Range | (CO₂) 0…2000 ppm |
| Range (temperature) | -50…50 °C |
| Accuracy (CO₂) | typ. ±40 ppm ±3 % of value |
| Accuracy (temperature) | ±0,5 °C |
| Output | 3 x 0…10 Vdc, 2 mA |
| Protection class | IP54, cable downwards |
| Ambient temperature | -30…50 °C |
| Humidity | 0…85 %rH |
| Cable gland | M16 |
| Mounting | with screws, external lugs |
| Dimensions | 105 x 110 x 46 mm |
| TYPE | ARTICLE | DESCRIPTION |
| HDU | 1135090 | CO₂ transmitter for cold spaces |
| HDU-N | 1135091 | CO₂ transmitter with display |
| HDU-M | 1135150 | Modbus CO₂ transmitter for cold spaces |
| HDU-M-N | 1135151 | Modbus CO₂ transmitter with display |
| HDU-5K | 1135160 | CO₂ transmitter for cold spaces, range 0…5000 ppm |
| HDU-5K-N | 1135161 | CO₂ transmitter with display, range 0…5000 ppm |
| HDU-5K-M | 1135170 | Modbus CO₂ transmitter for cold spaces, range 0…5000 ppm |
| HDU-5K-M-N | 1135171 | Modbus CO₂ transmitter with display, range 0…5000 ppm |
| ML-SER | 1139010 | transmitter commissioning tool |
| HD-R | 1135003 | relay, 24 Vac 1 A |
