The particulate-hygro-thermo-baro sensors from our COMPACT series are designed to meas-ure relative humidity, air temperature and barometric air pressure, and fine dust values PM10 and PM 2.5.
The use of high-quality sensors for the parameters to be measured allows the sensor to achieve the following:
• High long-term stability
• Virtually linear characteristic
• Good dynamic behaviour
• Dewing resistance
• Low temperature coefficients
• Small hysteresis
Interfaces:
• digital outputs MODBUS RTU / THIES
• plug connection
• calble connection
The sensors are primarily intended for use in distributed fine dust measurement outdoors. For example, the fine dust distribution in a district can be recorded using several hygro-thermo-baro sensors. Thanks to its universal interface, the sensor can also be used as an individual solution in any suitable application.
The interface to the device is digital and consists of an RS485 interface in half duplex mode. In conjunction with ID-based communication the interface enables operation of the sensors in a bus system.
Two data protocols are available:
• ASCII (THIES format)
• Binary (MODBUS-RTU)
The sensor is equipped with a built-in pressure sensor, as well as a replaceable hygro-thermo module for recording the air temperature and relative humidity, as well as a replaceable fine dust sensor. The durable sensors are adjusted and calibrated at the factory.
| Particulate | |
| Measuring range | 0 … 1000 µg/m³ |
| Accuracy | PM2.5 @ -10…+60 °C |
| ± 10 µg/m³ @ 0 … 100 µg/m³ | |
| ± 10 % of measuring @ 100 … 1000 µg/m³ | |
| PM10 @ -10…+60 °C | |
| ± 25 µg/m³ @ 0 … 100 µg/m³ | |
| ± 25 % of measuring @ 100 … 1000 µg/m³ | |
| (with no fog) | |
| Temperature | |
| Measuring range | -40 … +60 °C |
| Accuracy | ± 0.1 °C @ -40 ... +60 °C @ moved air > 2 m/s |
| Rel. Humidity | |
| Measuring range | 0 … 100 % rel. Humidity |
| Accuracy | Typ. ± 1,5 % r. H. @ 25 °C and < 80 % r. H. |
| 2 % r. H. over the complete measuring range | |
| Air pressure | |
| Measuring range | 300 … 1200 hPa |
| Accuracy | ± 0.25 hPa @ -20 … +60°C @ 800 … 1100 hPa |
| ± 0.50 hPa @ -20 … +60°C @ 600 … 800 hPa | |
| Interface | |
| Type | RS 485 HD |
| Data format | 8N1, 8N2, 8E1, 8E2, 8O1, 8O2, 7E1, 7N1 |
| Baud rate | 2400 ... 57600 Baud |
| Operating voltage | |
| Battery connection | 2x 12 ... 30 V DC |
| General | |
| Ambient conditions | -20 ... +70 °C |
| 0 ... 100 rel. humidity, including condensation | |
| Current load | Measurement electronics: |
| typ. 360 mW | |
| max. 500 mW | |
| Ventilation: | |
| 2 W | |
| Housing | Stainless steel, polycarbonate |
| Protection | IP53 |
| Dimension | Ø 120 x 317 |
| Weight | aprox. 1.25 kg |
