Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 95)

IM 11M12A01-05E 7-22
7.10.2 Manual Calibration
The following describes how to perform a calibration.
7.10.2.1 Preliminary
Before performing a manual calibration, be sure that the ZA8F Flow Setting Unit zero-
gas flow valve is fully closed. Open the zero-gas cylinder pressure regulator so that the
secondary pressure equals measured gas plus approx. 50 kPa (or measured gas pressure
plus approx. 150 kPa when a check valve is used, maximum pressure rating is 300 kPa.).