Introduction to GMP251 - GMP251

GMP251 User Guide

Document code
M211799EN
Revision
G
Language
English (United States)
Product
GMP251
Document type
User guide

GMP251 is designed for CO2 measurement in demanding applications that require reliable and accurate performance. The measurement range is 0 ... 20 %CO2.

The probe is based on Vaisala’s patented 2nd generation CARBOCAP® technology and equipped with Vaisala Microglow infrared light source. The probe is easy to install with a plug-in/plug-out M12 connection.

Sensor performance is optimized at 5 %CO2 measurement. For compensation purposes, the probe also includes an internal temperature sensor that allows measurement compensation according to ambient temperature. As dust and most chemicals do not affect the measurement, and the effect of temperature, pressure and background gas can be compensated for, the probe can provide accurate and stable measurements in a wide range of applications.

Figure 1. GMP251 Probe Parts
1
5-pin M12 connector. For pinout, see Wiring.
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 CARBOCAP® CO2 sensor.
5
Filter (see Filter Options.
CAUTION Do not attempt to open the probe body. There are no user serviceable parts inside the probe body.