Instruction Manual
ExTox IMC-8/-4
Page 20 of 24
BA_IMC-8_-4_e_2011-09-20.doc
Adjustment
When setting the zero point there should definitely be no measured gas. Then you have to
press first key + and then additionally key M to store the zero value.
Then the volume stream is set to the nominal value 30 l/h. For storing you first have to press
Key – and then additionally Key M.
Dust Filter
The dust filter is integrated in the housing of flow rate monitoring. The condition of the filter
can easily be checked in the inspection glass. This test should be done regularly in intervals
which depend on the dust load of the measured gas. For exchange of the used filter inlet the
inspection glass can be removed. When closing you have to ensure correct installation of the
sealing and the inspection glass. Please also check tightness.
6.2
Housing Fans
The housing fans are equipped with a dust protection mat which should be cleaned regularly
from dust. Therefore remove plug cover and clean mat.
The redundant ventilation of housing including monitoring of fans avoids safely the formation of
potentially explosive mixtures in case of leakages in the IMC. The state of the fans is detailed
indicated on the display of the control unit ("FAN"). In case even one of the fan fails the status
indication changes from "OK" to "FAULT" and a fault of control unit is indicated at the control
unit.
6.3
Condensate Trap incl. Hose Pump
The condensate removal is automatically done via the hose pump (standard for Biogas and
KAT-Types). Nevertheless we recommend checking the condensate trap and hose line regularly
on possible blockages. Condensate traps and hose lines should be cleaned on demand. It has
to be ensured that the measured gas flow is not interfered. For this purpose it might be neces-
sary to disconnect hose lines. After connecting everything again please check tightness of sam-
ple line.
Please make sure that the condensate can drain off failure free and depending on composition
of condensate even safe from the connection at the bottom of the housing.
6.4
Condensate Trap
Draining of the condensate trap (standard for IMC-Types) has regularly to be done manuall and
the trap has to be cleaned on demand. For this purpose you have to loosen the screwed ele-
ment and drain the condensate. After connecting everything again please check tightness of
sample line.
Please make sure that the condensate is disposed safely depending on composition.
6.5
Measured Gas Cooler incl. automatic Removal of Condensate
Gas dehumidification is done by means of a Peltier cooler. The temperature of measured gas is
factory sided adjusted to +5 °C and monitored. During the warm-up phase a fault message is
issued until the cooler reaches operation temperature.
The measured gas cooler meets the high requirements of the industrial process analysis. The
responsiveness of the temperature monitoring is a sign for the fact that the measured gas
composes of very high temperatures or of a very high condensate load. It is the same with
clearly higher measured gas volume streams.
The cooler is nearly maintenance free.
The condensate removal is automatically done via the hose pump. We recommend checking the
hose line regularly on possible blockages. Condensate traps and hose lines should be cleaned
on demand. It has to be ensured that the measured gas flow is not interfered. For this purpose
it might be necessary to disconnect hose lines. After connecting everything again please check
tightness of sample line.
