![background image](http://html.mh-extra.com/html/yokogawa/av550g/av550g_user-manual_911433058.webp)
< 4. Piping >
4-1
IM 11M12D01-01E
4. Piping
This chapter describes piping procedures for the AV550G Zirconia Oxygen Analyzer Averaging
Converter system based on two typical system configurations.
4.1 Piping for a System Using Flow Setting Units for
Manual Calibration
The piping for a system using flow setting units for manual calibration is shown in Figure 4.1.
Stop Valve
or
Check Valve
ZR22G Detector (max. 8 detectors)
Output signal cable (Cell output,
thermocouple output, cold contact
compensation)
(0.75mm
2
, 6-core shield cable)
Heater power
(1.25mm
2
, 2-core shield cable)
Analog outputs :
Averaged and
individual outputs
4 to 20 mA DC
Digital output
Contact output
Contact input
Power supply :
100 / 115 V AC,
50 / 60 Hz±5%
Reference gas
Air set
Zero
gas cylinder
Calibration gas
Calibration gas unit case
Span gas (Calibration gas unit same as for zero gas)
Instrument air
ZA8F
flow setting unit
Model AV550G Averaging Converter
F4-1E.ai
Needle
Valve
Flowmeter
Pressure
reducing
valve
Figure 4.1 Typical Piping for System Using Flow Setting Units for Manual Calibration
The following outlines some points to note regarding the piping for this system.
• Install a stop valve or a check valve through a nipple on the calibration gas inlet of the detector.
CAUTION
The stop valve should be connected directly to the detector. If any piping is present between the
detector and the stop valve, condensation may develop in the pipe, causing damage to the detector
by rapid cooling when the calibration gas is introduced.
• When a high temperature detector is used and the pressure of a sample gas is negative, connect
an ejector assembly on the sample gas outlet of the high temperature probe adapter. (See Figure
4.3 in Subsection 4.1.4.)
• When a high temperature detector is used and the pressure of a sample gas is 0.49 kPa or higher,
it is recommended that a throttle (e.g., needle valve) be installed on the sample gas outlet of the
high temperature probe adapter. (See Figure 4.4 in Subsection 4.1.4.)
Summary of Contents for av550g
Page 17: ...Blank Page ...
Page 45: ...Blank Page ...
Page 71: ...Blank Page ...
Page 203: ......
Page 205: ......
Page 207: ......
Page 209: ......
Page 211: ......
Page 213: ...Blank Page ...