Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 118)

IM 11M12A01-03E 8-6
8.2 Output Hold Setting
The “output hold” functions hold an analog output signal at a preset value during the
equipment’s warm-up time or calibration or if an error arises. Outputs 1 and 2 can be set
individually. Table 8.2 shows the analog outputs that can be retained and the individual
states.
Table 8.2
Equipment status During warm-up Under Under calibration On Error
maintenance During blow back occurrence
Output hold
values available
4 mA
20 mA
Without hold
feature
Retains output
from just before
occurrence
Set value
(2.4 to 21.6 mA)
᭺ : The output hold functions are available.
᭺
᭺
᭺
᭺
᭺
᭺
᭺ ᭺
᭺
᭺ ᭺
᭺
T8.2E.EPS
8.2.1 Definition of Equipment Status
(1) During Warm up
“Warming up” is the time required after applying power until the sensor tempera-
ture stabilizes at 750
ЊC, and the equipment is in the measurement mode.
(2) Under maintenance
“During maintenance” is the time, starting from pressing the Setup key in the basic
panel display the Execution/Setup display, to go back to the basic panel
display. The display panels under the Execution/Setup display, which are in Figure
7.3.1, are included.
(3) Under calibration” (see Chapter 9, “Calibration”)
“During calibration” is the time, during manual calibration, starting from entering
the Manual calibration display (shown in Figure 8.1), and making a series of
calibrations, until the Calibration End key is pressed or until the preset output
stabilization time elapses.
Enter
Open span gas valve.
Set flow span gas to
600ml/min.
Valve opened
᭜ Cancel calibration
Manual calibration
F8.1E.EPS
Figure 8.1