Teledyne API T802 Paramagnetic O2 Analyzer Operation Manual Principles of Operation
235

RELAY PCA

SENSOR SUITES
LOGIC DEVICES
(e.g. CPU, I2C bus,
Touchscreen,
MotherBoard, etc.)
ON / OFF
SWITCH
PS 2
(+12 VDC)
COOLING
FAN(S)
PUMP
AC HEATERS
PS 1
ANALOG
SENSORS
(e.g. Temp Sensor,
Pressure Sensor,
Flow Sensor) Pre-Amplifiers
& Amplifiers
Solenoid
Drivers
AC POWER
DC POWER
AC
POWER IN
+5 VDC
±15 VDC
CO2 SENSOR PCA
(when optional CO2
sensor installed)
O2Sensor
OPTIONAL
CO2 SENSOR
Figure 12-13: Power Distribution Block Diagram
12.5.7. FRONT PANEL TOUCH SCREEN/DISPLAY INTERFACE

Users can input data and receive information directly through the front panel

touchscreen display. The LCD display is controlled directly by the CPU board.

The touchscreen is interfaced to the CPU by means of a touchscreen controller

that connects to the CPU via the internal USB bus and emulates a computer

mouse.

07275B DCN6418