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Teledyne API T703/T703U Calibrator Operation Manual Principles of Operation
207
9.5.2. GENERATOR PNEUMATIC OPERATION
The rate of flow through the O
3
generator is controlled by a flow control assembly
located on the Regulator Sub-Assembly in the front of the calibrator.
Measure / Reference
Valve for
Photometer Bench
O
3
Outlet to
Photometer
and
Internal Vent
O
3
Generator
Gas Inlet
O
3
Outlet
O
3
Generator
Heater Control PCA
Figure 9-14: O
3
Generator Valve and Gas Fixture Locations
9.5.3. O
3
GENERATOR ELECTRONIC OPERATION
Electronically the O
3
generator and its subcomponents act as peripheral devices operated
by the CPU via the motherboard. Sensor signals, such as the UV lamp thermistor are
routed to the motherboard, where they are digitized. Digital data is sent by the
motherboard to the calibrator’s CPU and where required stored in either flash memory
or on the CPU’s disk-on-chip. Commands from the CPU are sent to the motherboard
and forwarded to the various devices via the calibrator’s I
2
C bus.
07223C DCN6572