YOKOGAWA ZO21DW, Руководство пользователя, Страница: 28 / 39

<6. OPERATION>
6-1
IM 11M03A02-00E
6. OPERATION
This chapter describes the operations for running the system related only to the ZO21DW
Detector. For the entire zirconia oxygen analyzer operation, see the instruction manual for the
converter.
6.1 Start-Up
6.1.1 Inspection of Piping and Wiring Conditions
In referring to Chapters 3 and 4, inspect the piping and wiring to see that they are correctly
installed.
6.1.2 Checking of Set Valves
Set up valves and associated components used in the analyzer system as follows:
(1) If a stop valve is used in the detector's calibration gas inlet, fully close this valve.
(2) If instrument air is used as the reference gas, adjust the air set secondary pressure so that
an air pressure equals measured gas pressure plus approx. 50 kPa (or measured gas
pressure plus approx. 150 kPa when a check valve is used, maximum pressure rating is 300
kPa) is obtained. Turn the reference gas flow setting valve in the flow setting unit to obtain a
flow of 800 to 1000 ml/min. (Turning the valve shaft counterclockwise increases the rate of
flow. Before turning the valve shaft, if the valve has a lock nut, first loosen the lock nut.) After
completing the valve setup, be sure to tighten the lock nut.
6.1.3 Supplying Heater Power
Supply power for the heater from the converter to the detector. Connect the power to the
converter and turn ON the power switch in the converter. The time from turning ON the power to
starting measurement after the sensor in the detector reaches the required temperature is about
ten minutes.
6.1.4 Calibration
The calibration procedure varies with the converter used. Carry out calibration according to the
instruction manual for that converter.
CAUTION
When combining with the ZR402G converter, select the ZO21D as a detector in commissioning
mode of the ZR402G.