Electronic Operation; Overview; Figure 10-4: 400E Electronic Block Diagram - Teledyne 400E Instruction Manual

THEORY OF OPERATION

10.3. Electronic Operation

10.3.1. Overview

Figure 10-4 shows a block diagram of the major electronic components of the
Model 400E.
Analog Outputs
A1
A2
A3
A4
Temp
SAMPLE
TEMP
PHOT OMETER
UV LAMP TEMP
IZS OPTION
UV LAMP TEMP
226
Optional
4-20 mA
Analog External
Outputs Digital I/O)
(D/A)
Power-Up
Circuit
MOTHER
BOARD
Box
Thermistor
Sensor Inputs
Interface
O
3
Preamp
O
3

Figure 10-4: 400E Electronic Block Diagram

COMM B
Female
Control Inputs:
1 – 6
Status Outputs:
1 – 8
A/D
Converter
(V/F)
2
I C
Gas
Pressure
Sensor
Gas
Flow
Sensor
IZS
IZS UV Lamp
Reference
Power Supply
Detector
Photometer UV
Lamp Power
Detector
Supply
Absorption tube
Detector
Model 400E Ozone Analyzer
Instruction Manual
COMM A
Male
RS–232
ONLY
PC 104
CPU Card
RS–232 or RS–485
Disk On
CPU
STATUS
LED
Flash Chip
PC 104
Bus
Zero/Span/Cal
Valve Option
Bus
Keybd
& I
LED
Display
Measure / Ref
Valve
IZS Sample/Cal
Valve
IZS UV
Lamp Heater
Photometer
UV Lamp
Heater
P/N 04316 Rev: B
Chip
PUMP
RELAY
BOARD
2
C Status