2
│ 1 General
1.2
Purpose
The
Multitec 545
and the
540
version are gas measuring de-
vices for monitoring gas mixtures that are formed in biological
processes (biogas, landfill gas). They measure the concentration
of several gases in the gas mixture simultaneously. The devices
are ideal for use in waste disposal sites, sewage plants and bi-
ogas plants.
In addition, the devices can be used to monitor the interspace
of membrane roofs of biogas plant fermenters. When used in
this way, the gas concentration is measured in the support air
between the inner and outer membrane.
The devices are fitted with infrared sensors for measuring meth
-
ane CH
4
and carbon dioxide CO
2
as standard. The Multitec
545
also features an electrochemical sensor for hydrogen sulphide
H
2
S (5000 ppm) as standard. Both models can be fitted with ad
-
ditional electrochemical sensors.
Note:
These operating instructions describe the
Multitec 545
with all
additional equipment (firmware version 1.XXX). All descriptions
refer to the device as delivered (factory settings) and apply to
both device versions. The manufacturer reserves the right to
make changes.
