Blow Back Piping - YOKOGAWA EXAxtZR Instruction Manual

4.3.1

Blow Back Piping

4-10
Model ZR22G Separate type Zirconia Oxygen
Analyzer, Detector
Check valve
Reference gas
Calibration gas
Figure 4.10 Piping for System 3
This piping is required when the blow back function is carried out. The piping described
below provides automatic blow back operation when the " blow back start " command is
entered to the converter.
Solenoid valve
Pipe junction
Blow pipe
Figure 4.11 Blowback Piping
Signal
(6-core shield cable)
Heater (2-core cable)
Needle
flowmeter
valve
Model ZR40H Auto Calibration unit
Pressure reduction valve
F4.10E.EPS
Model ZR402G Converter
EXA ZR402G
~
100 to 240 V AC
Contact input
Analog output, contact output
Digital output (HART)
Air Set
Instrument air
Calibration gas pressure regulator
Calibration gas
unit case
Zero gas cylinder
F4.9E.EPS
IM 11M12A01-02E