Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 92)

IM 11M13A01-04E 8-4
8.3 Output Hold Setting
The “output hold” functions retain an analog output signal at a preset value during the
equipment’s warm-up time or calibration or if an error arises.
Table 8.4 shows the analog outputs that can be retained and the individual states.
Table 8.4 Analog Output Hold Setting
Equipment status During warm-up During During calibration Error occurrence
maintenance
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. T8.4E.EPS
8.3.1 Definition of Equipment Status
(1) Warming up
“Warming up” is the time required after applying power until the sensor temperature
stabilizes at 750˚C, and the equipment is in the measurement mode. This status is that
the sensor temperature is displayed on the basic panel.
(2) During maintenance
“During maintenance” is the time from when a valid password is entered in the basic
panel display to enable the parameter code selection display until the display goes back
to the basic panel display
(3) “During calibration” (see Chapter 9, Calibration)
In the manual calibration, proceed with the calibration operation with the parameter code
B10 to display the span-gas confirmation display for the first span calibration, thus
starting the calibration time when the [ENT] key is touched. After a series of calibra-
tions is complete and the preset output stabilization time has elapsed, the calibration
time will be up. Figure 8.1 shows the definition of “during calibration” in the manual
calibration.