VAISALA GMW87 Carbon Dioxide, Humidity, and Temperature Transmitter for DCV (0 … 5000ppm)

- Carbon dioxide:

Measurement range: 0 … 5000 ppm

Stability in typical HVAC applications: ±(15 ppm + 2 % of reading) over 5 years

Carbon dioxide sensor: CARBOCAP GM10

- Temperature:

Measurement range: 0 … +50 °C (+32 ... +122 °F)

- Supply voltage: 

18 … 35 V DC

24 V AC ±20 % 50/60 Hz

- Max. current consumption at 18 V DC: 45 mA

- Max. power consumption at 30 V AC: 1 W

- RS-485 interface :

Isolated, supports Modbus RTU protocol

• Modbus RTU address range:

• 1 … 247 (up to 255 possible, non-standard)

• Bit rates:

• 4800, 9600, 19200, 38400, 57600, 76800, 115200

• Parity:

• None or Even

• Supports automatically both 1 and 2 stop bits

- Outputs: 4 … 20 mA and/or 0 … 10 V

- IP rating: IP30

- Weight: 160 g (5.64 oz)

Datasheet