Gas and Specialty Sensors

GMD20, GMW86 Series



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GMD20, GMW86 Series

Vaisala Carbon Dioxide Sensors GMD20, GMW86 Series

Vaisala Carbon Dioxide Sensors

 

The Vaisala GMW86 and GMD20 Series Carbon Dioxide Sensors with transmitter capabilities are specially designed for demand-controlled ventilation in building automation systems, BAS. The CO2 transmitters use the silicon-based CARBOCAP gas sensor. The simple structure and reference measurement capabilities make these single-beam, dual-wavelength NDIR CO2 sensors extremely stable and reliable. The temperature and flow dependence is negligible. Models are available with a temperature output.


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QtyModelDescriptionIn StockList PriceInternet Price
GMD20 CO2 DUCT SENSOR ANALOG OUTPUTIn Stock1,213.89606.94
GMD20D CO2 DUCT SENSOR ANALOG OUTPUT RELAY DISPLAYIn Stock1,022.00511.00
GMR20 RELAY OPTION FOR GMW21 OR GMD20INFO206.00103.00
GMW21 WALL-MOUNT CO2 TRANSMITTERINFO811.00405.50
GMW83 CO2 WALL TEMP TRANSMITTER 0-10VIn Stock521.00260.50
GMW83A CO2 WALL TEMP TRANSMITTER 0-10V LEDINFO591.00295.50
GMW83D CO2 WALL TEMP TRANSMITTER 0-10V DISPLAYINFO628.00314.00
GMW83DRP CO2 WALL RH/ TEMP TRANSMITTER 0-10V DISPLAYINFO775.00387.50
GMW83RP CO2 WALL RH/ TEMP TRANSMITTER 0-10VINFO668.00334.00
GMW83T CO2 WALL TEMP TRANSMITTER 0-10V STPTINFO531.00265.50
GMW86P CO2 WALL TEMP TRANSMITTERIn Stock600.00300.00
GMW86PT CO2 WALL TEMP TRANSMITTER W/SETPOINTINFO498.00249.00
GMW93 CO2 WALL TEMP XMTR VOLT OUTPUTINFO1,148.00574.00
GMW93D CO2 WALL TEMP XMTR VOLT OUTPUT DISPLAYINFO1,148.00574.00
GMW93RD CO2 WALL TEMP HUM XMTR VOLT OUTPUT DISPLAYINFO1,321.00660.50
GMW94 CO2 WALL TEMP XMTR 4-20 OUTINFO1,148.00574.00
GMW94D CO2 WALL TEMP XMTR 4-20 OUT DISPLAYINFO1,148.00574.00
GMW94RD CO2 WALL TEMP HUM XMTR 4-20 OUT DISPLAYINFO1,321.00660.50
GMW95 CO2 WALL TEMP MODBUS/BACNETINFO1,148.00574.00
GMW95D CO2 WALL TEMP MODBUS/BACNET DISPLAYINFO1,148.00574.00
GMW95R CO2 WALL TEMP HUM MODBUS/BACNETINFO1,321.00660.50
GMW95RD CO2 WALL TEMP HUM MODBUS/BACNET DISPLAYINFO1,321.00660.50

Accessories

No accessories found
Features
  • Silicon-based NDIR sensor
  • Excellant long-term stability
  • Negligible temperature dependence
  • Easy installation
  • Five-year recommended calibration interval
  • Duct sensor measurement in the duct
Specifications

Supply Voltage:

GMD20:24 VAC @ 2.5 VA or 24 VDC @ 104 mA

GMW86:24 VAC @ 1 VA or 18-35 VDC @ 45 mA

Accuracy:2% of reading ±30 ppm

Signal Output:

GMD20:0/4-20 mA @ 600Ω, and 0-10 VDC @ 1kΩ minimum

GMW86:Temp. 1000Ω 385 RTD, 32° to 122℉ (0° to 50℃)

 :Humidity 4-20 mA or 0-10 VDC

Linearity:±1% FS

Stability:<5% FS for 5 years

Air Velocity:0-2000 fpm (0-10 mps)

Measurement Range:0-2000 ppm

Warm Up Time:15 minutes

Response Time:1 minute

Relay Type:SPST, 50 VAC/VDC @ 0.5 A

Relay Setpoint:1000 ppm (adjustable with calibration software

Operating Temperature:23° to 113°F (-5° to 45°C)

Operating Humidity:0% to 85% non-condensing

Enclosure Rating:NEMA 1, ABS Plastic

Weight:

Wall:0.25 lb (0.11 Kg)

Duct:0.75 lb (0.34 Kg)

Approvals:CE

Warranty:2 years

Certifications