Zero/Span Valve Options; Ir Source - Teledyne T300 Operation Manual

Theory of Operation

13.4.4.3. ZERO/SPAN VALVE OPTIONS

13.4.4.4. IR SOURCE

316
Any zero/span/shutoff valve options installed in the analyzer are controlled by a set of
electronic switches located on the relay board. These switches, under CPU control,
supply the +12VDC needed to activate each valve's solenoid.
The relay board supplies a constant 11.5VDC to the IR Source. Under normal operation
the IR source is always on.
Teledyne API – Model T300/T300M CO Analyzer
06864B DCN6314