2223A Oxygen Transmitter Functional Safety Manual
3.4.2 Fault
relay
Select the Fault Relay and configure as follows.
3.4.3 Flow
alarm
If the internal flow alarm is fitted and enabled, it should be calibrated at “normal” gas flow as
described in the operator manual. Alarm levels should then be set as appropriate.
As an alternative to the internal flow sensor, external devices may be used in conjunction
with the external flow alarm inputs as described in the installation manual.
3.4.4 Analog
inputs
External measurements may be used to provide pressure compensation and/or cross
interference compensation by connection to the transmitter’s analog inputs. Where this
feature is enabled it should be configured as described below.
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