TELEDYNE API T703U - Generator Pneumatic Operation; O 3 Generator Electronic Operation

Principles of Operation Teledyne API T703/T703U Calibrator Operation Manual
198
GENERATOR PNEUMATIC OPERATION 9.5.2.
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
O
3
GENERATOR ELECTRONIC OPERATION
9.5.3.
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.
07223D DCN7107