VAISALA GMW90 Carbon Dioxide, Temperature and Humidity Transmitter (Analog or Modbus RTU output (configurable))

- Carbon dioxide: 

Measurement range: 0 … 5000 ppm

Stability in typical HVAC applications: Total accuracy at room temperature ±75 ppm at 600 and 1000 ppm incl. 5 years drift

Carbon dioxide sensor: CARBOCAP GM10

- Temperature:

Measurement range: −5 … +55 °C (+23 … +131 °F)

Temperature sensor: Digital temperature sensor

- Relative humidity:

Measurement range: 0 … 95 %RH

Stability in typical HVAC applications: ±0.5 %RH/year

Humidity sensor: HUMICAP 180R

- IP rating: IP30

- Standard housing color: White (RAL9003)

- Housing material: ABS/PC, UL-V0 approved

- Output connector: Screw terminals. Max. wire size 2 mm (AWG14)

- Service port connector: 4-pin M8

- Weight: 163 g (5.75 oz)

- Supply voltage: 18 … 35 V DC, 24 V AC ± 20%; 50/60 Hz

- Service port: RS-485 line for temporary service use

- Default analog scales:

CO2: 0 … 2000 ppm

T: −5 … +55 °C

RH: 0 … 100 %RH

- Field bus models:

Power consumption: < 1.5 W

Output type: RS-485 (galvanic isolation, 1.5 kV) RS-485 end of line termination: Enable with jumper, 120 Ω

Modbus RTU address range: 0 … 247