AMC-DTM-Sensor Transmitter
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%LEL:
ddd%LEL
Max value 499.
%VOL:
ddd.d%VOL if Range <= 30%VOL.
ddd%VOL if Range > 30%VOL.
Max value 100.0
If measured concentration is greater than the Maximum value displayable it is capped to the
Maximum value. Leading zeros are not shown.
5.5.6 Pre-config (Predefined Configuration)
Advisory
: Changing pre-config configuration is a destructive action. It restores factory
configuration values and overwrites all corresponding previously used configuration values.
The transmitter comes pre-programmed with factory values for a number of different
configurations.
5.5.7 Sensor
Configuration
Sensor configuration stipulates following parameters:
5.5.7.1 Number of Electrodes
The number of sensor electrodes value must be set for 2 or 3.
Note that the transmitter supports only 2 and 3 terminal electrochemical sensors that
have both positive and negative going current signals. Two additional electrode
connections are supported for future development purposes.
5.5.7.2 Polarity
The sensor can act as either current source or current sink.
5.5.7.3 Ref
Bias
The reference electrode bias voltage is from –499 mV to +499 mV.
5.5.7.4 No Sensor Fail Detection
The transmitter can detect sensor presence. If 1 minute average positive current
supplied by the sensor is greater than 3nA or if 1 minute average negative current is
smaller than –3nA, the transmitter assumes that the sensor is present. If this is the
case, the transmitter declares “no sensor” failed state.
This feature can be enabled or disabled using the menu.
5.5.8 Password
The transmitter contains two passwords: an operator configurable and a factory password. They
are of fixed length of 5 characters. The initial operator password is “12345”. This password can
be changed. Factory password cannot be changed. Contact AMC for the factory password.
