Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 85)

IM 11M12A01-03E 5-13
5. Wiring
5.7 Wiring for ZR40H Automatic Calibration Unit
This wiring is for operating the solenoid valve for the zero gas and the span gas in the
ZR40H Automatic Calibration Unit, in a system where the calibration gas flow rate is
automatically controlled (e.g. System configuration 3). When installing this wiring,
proceed as follows:
COMMON SPAN ZERO
to ZR402G terminal "AC-COM"
to ZR402G terminal "AC-SPAN"
to ZR402G terminal "AC-ZERO"
Wiring inlet
2-G1/2, Pg13.5, M20 or 1/2NPT
ZERO
SPAN
COMMON
Span gas solenoid valve
Zero gas solenoid valve
Terminal screw : M4
Wire or equivalent
F5.12E.EPS
Figure 5.12 Automatic Calibration Unit