Instruction Manual
ExTox IMC-8/-4
BA_IMC-8_-4_e_2011-09-20.doc
Page 13 of 24
Menu Text
Selection
Function
T1
To 1439
Duration of the phase Air in minutes
T2
To 1439
Duration of the phase Flushing in minutes
T3
To 1439
Duration of the phase Measurement in minutes
Flow
ON, OFF
For IMC-Biogas the setting has to be OFF.
Attention:
Changing of these settings should in no way be
done by the user. Changed measuring functions may other-
wise lead to loss of safety functions.
Measured
Gas
- right col-
umn -
Concentration
Concentrations of test gases for the measuring channels of
the Biogas-Measurement have to be indicated. Only the
TIMER controlled channels are processed. On the left side
the measured gas and on the right side the corresponding
concentration is indicated.
The menu point OPTIONS now comprises the possibilities of setting for flow rate monitoring
(see 6.1).
Access Level to perform changes in the menu: 3
Menu Text
Selection
Function
FLOW-MIN
0 to 300 l/h
Lower limit of flow rate monitoring in l/h. Under-scale leads
to system fault.
(Standard setting: 15 l/h)
FLOW-MAX
0 to 300 l/h
Upper limit for flow rate monitoring in l/h. Over-scale leads
to system fault.
(Standard setting: 60 l/h)
MAX-
CHANNEL
1…4 (IMC-4D)
and
1…6 (IMC-8D)
Number of measuring points (only for option Switching be-
tween measuring points, see 5.2.5)
▪
Channel Configuration
Besides the Mode settings ON and OFF the setting TIMER is accessible in Biogas Mode. All
measuring points with this setting are integrated in the discontinuous course of biogas meas-
urement.
Attention:
Please note that oxygen measurement – if available – always has to be on Channel 2
due to system internal reasons.
5.2.3
Pre-configured Relays and Digital Inputs
The following relays cannot be configured freely.
IMC-8D (IMC-4D)
Application
Relay K21 (K9)
Internally allocated
Relay K22 (K10)
Control of magnetic valve (MV2) for closing the gas flow during batch
measurement
Relay K23 (K11)
Control of measured gas pump
Relay K24 (K12)
Control of magnetic valve (MV1) for switching between measured gas
and test gas
Digital input E3
Status signal housing fan (only for systems with DDL-Module 2.0, see
6.1
