Teledyne 3010MA - Paramagnetic oxygen analyzer, includes 0-100% range - Manual (Page 21)

Paramagnetic O2 Purity Analyzer Operational Theory
Teledyne Analytical Instruments 21
2.2 Electronics and Signal Processing
The Model 3010MAParamagnetic Oxygen Purity Analyzer uses an
8031 microcontroller with 32 kB of RAM and 128 kB of ROM to control
all signal processing, 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 (Note: the heating
system for the analysis must be set to 115V or 230V with the line
voltage selector switch located on the rear Control unit).
With the
exception of the paramagnetic sensor, all of the system electronics are
located in the Control Unit. Figure 2-3 shows the location of the
temperature controller and the main electronic PC boards.
Figure 2-3: Location of Electronic Components in Control Unit
The universal power supply is located behind the temperature
controller and is accessible after removing the rear panel.
The signal processing electronics including the microprocessor,
analog to digital, and digital to analog converters are located on the
motherboard at the bottom of the case. The preamplifier board is mounted
on top of the motherboard as shown in the above figure. These boards are
accessible after removing the rear panel. Figure 2-4 is a block diagram of
the analyzer electronics.