Citra Wahana Sekar Buana

Product

Carbon Dioxide

Specification

Carbon dioxide measurement

 

Measurement range


Accuracy (including repeatability, non-linearity and calibration uncertainty)
Sensor

0 ... 2000 ppm (nominal; can be calibrated for other ranges:
0 ... 5000 ppm, 0 ... 10 000 ppm, 0 ... 20 000 ppm)


±(2 % of range + 2.0 % of reading)
Vaisala CARBOCAP® 

Temperature measurement (optional with GMW21)

 

Measurement range
Accuracy at +25 °C
Sensor

0 ... +50 °C (+32 ... +122 °F)
± 0.5 °C (± 0.9 °F)
Semiconductor IC 

Operating environment

 

Temperature
Humidity

-5 ... +45 °C (+23 ... 113 °F)
0 ... 85 %RH non-condensing 

Inputs and outputs

 

Outputs
Optional outputs
Operating voltage
Power consumption

0 ... 20 mA or 4 ... 20 mA and 0 ... 10 V
relay, LonWorks® interface
nominal 24 VAC/DC (18 ... 30 VDC)
<2.5 W 

Mechanics

 

Weight
     GMD20(D)
     GMW21 (D)
     GMW22 (D)
Housing material
Housing classification (electronics housing GMD20)


140 g (170 g)
100 g (130 g)
 90 g (120 g)
ABS plastic

IP65 (NEMA 4) 

Options and accessories

 

GMI21
GMR20
GML20

GML20T

19222GM
GMA20T

GM70 w/pump option

Display and relay option for GMD/W21/22
Relay output option
LonWorks® module with CO2 signal (not available when the display option is added)
LonWorks® module with both CO2 and temperature signals (not available when the display option is added)
Calibration software kit (disk serial COM adapter)
Analog temperature module for GMW21 (not available when the display option is added)
Hand-held CO2 meter for field verification

For complete specifications, please see the brochure or user guide in "Documents".

Description

The duct-mounted Vaisala CARBOCAP® Carbon Dioxide Transmitter Series GMD20 and wall mounted GMW20 are specially designed for Demand Controlled Ventilation (DCV). They are easy to install and require no maintenance. The recommended calibration interval is five years.

  • Versatile transmitters
  • Duct and wall mount models
  • Incorporates the Vaisala CARBOCAP® sensor - the silicon based NDIR
  • Excellent long-term stability
  • Negligible temperature dependence
  • Easy to install
  • Five year recommended calibration interval
  • Warranty time 2 years

GM20 series includes the following products:

  • GMW21(D) wall-mount transmitter (with display)
  • GMW22(D) small wall-mount transmitter (with display)
  • GMD20(D) duct-mount transmitter (with display)

http://www.vaisala.com/

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