
CHAPTER 2_______________________________________________________ PRODUCT DESCRIPTION
VAISALA __________________________________________________________________________ 3
CHAPTER 2
PRODUCT DESCRIPTION
Vaisala’s GMT220 transmitters are versatile instruments for
measuring CO
2
in industrial applications. The CARBOCAP
®
sensor is
silicon based and its operation is based on the NDIR Single-Beam
Dual-Wavelength principle.
Parts
The GMT220 transmitter is shown in Figures 1 and 2.
Figure 1. GMT220 with probe integrated into the transmitter
housing e.g. wall model transmitter.
1. Transmitter cove
2. Transmitter housing
3. Integrated probe
(interchangeable)
4. Printed protective
film
5. Tightening screw
6. Cable gland
(I.D. 6 mm)
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