Vaisala GMP252 - 2 Product Overview; Introduction to GMP252; Figure GMP252 Probe Parts

2. Product Overview
2.1 Introduction to GMP252
GMP252 is designed for CO
2
measurement in demanding applications that require reliable
and accurate performance. The measurement range is 0 ... 10 000 ppmCO
2
(measurements
can be carried out in the 10 000 ... 30 000 ppmCO
2
range with reduced accuracy).
The probe is based on Vaisala’s patented 2nd generation CARBOCAPâ technology and
equipped with Vaisala's Microglow infrared light source. The probe is easy to install with a
plug-in/plug-out M12 connection.
GMP252 is able to compensate for temperature, pressure and background gas. For
temperature compensation purposes, the probe includes an internal temperature sensor
that allows measurement compensation according to ambient temperature. As dust and
most chemicals do not
aect the measurement, and the eect of temperature, pressure and
background gas can be compensated for, GMP252 can provide accurate and stable
measurements in a wide range of applications.
1
2 3 4 5
Figure 1 GMP252 Probe Parts
1 5-pin M12 connector. For pinout, see Wiring (page 25).
2 Probe name and orientation mark for Vaisala transmitter installations (front) and laser-
printed type label (back).
3 Probe body. Contains the main component board.
4 Measurement cuvette with optics and CARBOCAPâ CO
2
sensor.
5 Filter (sintered, PTFE: see also Filter Options (page 13)).
Do not attempt to open the probe body. There are no user serviceable parts
inside the probe body.
CAUTION!
Chapter 2 – Product Overview
11