Yokogawa Single Channel Oxygen Analyzer System ZR22/ZR402 - Manual (Page 121)

IM 11M13A01-02E 8-4
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 8.1.2 shows the analog outputs that can be retained and the indi-
vidual states.
Table 8.1.2
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.
᭺
᭺
᭺
᭺
᭺
᭺
᭺ ᭺
᭺
᭺ ᭺
᭺
T8.1.2E.EPS
8.2.1 Definition of Equipment Status
(1) During warm up
“During warm up” is the time required after applying power until the sensor temperature
stabilizes at 750
Њ C, and the equipment is in the measurement mode.
(2) Under maintenance
“Under maintenance” is the time, starting for 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 3, Calibration)
“Under 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