Teledyne 3000PA operating instructions Electronics and Signal Processing, Span Zero Sample

2 Operational Theory Model 3000PA

Span In

Zero In

Sample In

In vacuum service the restrictor should be placed here .

Solenoid

Valves

In normal service the restrictor should be placed here .

Components in the shaded area are in the -C option (internal control valves) only and are not shown in the piping diagram above.

Cell

Flowmeter

Exhaust Out

Restrictor

Figure 2-5: Flow Diagram

2.4Electronics and Signal Processing

The Model 3000P Percent Oxygen Analyzer uses an 8031 microcon- troller with 32 kB of RAM and 128 kB of ROM to control all signal pro- cessing, input/output, and display functions for the analyzer. System power is supplied from a universal power supply module designed to be compatible with any international power source. Figure 2-6 shows the location of the power supply and the main electronic PC boards.

Figure 2-6: Location of Electronic Components

2-8 Teledyne Analytical Instruments