UNION Instruments GmbH
INCA Analyzer Series
– Instruction Manual
General description
Page 13 of 59
3.2.1
NDIR module
The NDIR module is used for measuring CO
2
, CH
4
and other possible hydrocarbon gas.
Using non-dispersive infrared (NDIR) technique and dual beam method, the setup of two IR
sensors and two IR detectors detects two different wavelengths depending on the type of
gas, accuracy and range of the measurement. Please see the sensors list for more details.
The module is temperature and pressure compensated and capable to detect and correct the
IR-source aging, which is typical for devices using the NDIR technique. If necessary, the
sensor head can be individually replaced. See spare parts list at the end of this manual.
The accuracy is better than 1% of full range.
Figure 3-3: NDIR module
3.2.2
EC and EC-µPulse module
The electrochemical module with or without the µPulse module can measure the following
gases: O
2
, H
2
and H
2
S. It has a high durability and a low sensor load using a patented
measurement process (µPulse). This technique allows very wide measurement ranges, for
example H
2
S (0 - 10000 ppm) without burdening the sensor life time.
If necessary, the sensor head can be individually replaced. See spare parts list at the end of
this manual.
Figure 3-4: EC/EC-µPulse module
