
12
6 Electrical connection
A high-quality shielded cable is required to connect the ammonia
sensor to a transmitter/controller, see Section 2.4 "Coolant
monitoring", page 6.
Use of an impedance converter is recommended at low
temperatures, as the electrical resistance of the gas-sensitive
sensor's glass membrane increases sharply, Section 2.4 "Coolant
monitoring", page 6.
Ammonia sensor connection
Internal conductor= measurement electrode
External conductor= reference electrode
7 Startup
Attention:
The sensor (1) must only be removed from (or
returned to) the storage container (3) once the union
nut (2) has been
completely
unscrewed!
Otherwise the sensor will be destroyed by the buildup
of negative (or positive) pressure.
The pipelines must be rinsed for a new installation so
they are free of impurities or residue, which could
clog the porous PTFE washer in the quick-change
fitting.