Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 54)

<4. Piping>
4-5
IM 11M12A01-04E
• Installation of ZR20H Automatic Calibration Unit
Zero gas inlet
Rc1/4 or 1/4NPT(Female)
Reference gas inlet
Rc1/4 or 1/4NPT(Female)
Terminal box side
Span gas inlet
Rc1/4 or 1/4NPT(Female)
166.5
258
243
214 MAX 44 66.5 40 40
Vertical mounting on the ZR202G (-B)
F3.15E.ai
Horizontal mounting on the ZR202G (-A)
Unit: mm
Display side
Zero gas inlet
Rc1/4 or 1/4NPT(Female)
Span gas inlet
Rc1/4 or 1/4NPT(Female)
Reference gas inlet
Rc1/4 or 1/4NPT(Female)
166.5
60
45
160
66.5 40 40 180 MAX 44
Piping Diagram
SPAN IN
REF. IN
ZERO IN
F4.11E.ai
Calibration gas
Reference gas
ZR202G body
Span gas
solenoid valve
Span gas flowmeter
Reference gas flowmeter
To Air set
To Zero gas cylinder
Needle valve
Automatic Calibration Unit
Zero gas flowmeter
Zero gas solenoid valve
Check
valve