Instruction Manual
ExTox Control Units Series ET-8D and ET-4D2
Page 13 of 39
4.1
Channel Configuration
Access Level to perform changes of the parameter settings: 2
Attention: For transmitters based on the measuring principle catalytic combustion and semi-
conductor the sensor signal might fall again into the measuring range due to the suppres-
sion of oxygen at very high concentrations of flammable gases. To recognize safely that the
end value of measuring range has been exceeded the latching for channel fault has to be
selected for these transmitter types. Furthermore the standard setting has to be chosen for
Parameter FA. For correct behaviour in case of alarm see 5.4.
Menu Text
Selection
Function
Setup Channel
1 to 8 (4)
Selection of channel to be adjusted.
Attention: During channel configuration the status of
alarm and fault messages remains frozen for the select-
ed channel that means there is no monitoring for this
channel. The interruption of the normal measuring oper-
ation is indicated by a blinking status LED Operation for
this channel.
Already stored changes will only be activated if another
channel is selected or the menu is left.
Gas
List
The chemical totals formula belonging to the measured
gas could be selected. It is indicated on the display dur-
ing measuring operation.
We recommend to select "---" on top of the list as gas
type for deactivated channels.
When measuring temperature please choose "TEMP",
"pH" for pH-Measurement and "RM" for smoke detec-
tors.
Dimension
(DIM)
% LEL,
% (v/v),
ppm, pH, DEG
Unit for the measuring range. It is displayed on indica-
tion of the measured value during measuring operation.
Decimal Point
(DP)
0,
0.0
It is fixed whether the measured value is displayed with
decimal point.
Attention: The change of this parameter affects also the
settings of end value of measuring range and alarm lev-
els.
Range
(Messber., MB)
0.1 to 5000.0,
1 to 50000
Fixes the end value of measuring range.
Attention: Please pay attention to the correct selection
of the measuring range. In order to allow flexible ad-
justment even for special measuring tasks we did not
integrate any plausibility control, such for example limi-
tation to 100 for dimensions % LEL.
