
Chapter 2 __________________________________________________________ Product Overview
VAISALA ________________________________________________________________________ 9
CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the Carbon Dioxide Transmitter Series GMT220.
GMT220 Transmitter Parts
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.
0807-032
Figure 1 GMT220 with Integrated Probe
The following numbers refer to Figure 1 above:
1 = Transmitter cover
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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