Yokogawa Integral Oxygen Analyzer ZR202 User Manual
Page 87
IM 11M13A01-04E
7-23
7. Startup
Table 7.15 Conducting Calibration (Continued)
T7.14E-2.EPS
The above "
display
" is a result of switch operations.
The symbol [ ] indicates the keys are being touched, and the light characters indicate "
flashing.
"
"/" indicates that the characters are displayed alternately.
[
Cancel
] indicates the procedure to stop the key operations.
OPEn
/0.89
0.89
CALEnd
b10
Basic
panel
display
Switch operation
Display
Description
If you touch the [
ENT
] key, "
OPEN
" and the currently measured value
are displayed alternately. Open the Flow Setting Unit zero-gas flow valve
and adjust the zero-gas flow to 600 ml/min – 60 ml/min. To do this,
loosen the valve lock nut and gently turn the valve control (shaft) counterclockwise.
Check the calibration gas flowmeter for confirmation. If the automatic calibration
unit is connected, open the zero—gas solenoid valve, and then the measured value
changes to the zero-gas value. When the display becomes stable,
proceed to the next step.
To cancel the above, touch the [>] key and [
ENT
] key together.
Then the display returns to "
ZERO Y.
"
If you touch the [
ENT
] key, all the digits flash. At that point,
no calibration is conducted yet.
Touch the [
ENT
] key again to get the measured value to agree
with the zero-gas concentration. Close the zero-gas flow valve.
Secure the valve lock nut for leakage during measurement.
If the automatic calibration unit is connected, close the span—gas solenoid valve.
"
CALEND
" flashes during the output hold time. If "output hold" is specified
in the Output Hold setting," it remains as an analog output (see Section 8.3).
When the preset output hold time is up, the calibration is complete.
The output hold time is set to 10 minutes at the factory.
If you touch both the [>] key and [
ENT
] key at the same time during
the preset Output Hold Time, the calibration is aborted
and the parameter code selection display appears.
If you touch the [>] key and [
ENT
] key together,
then the basic panel display appears.
>
>
>
>
>
ENT
ENT
ENT
ENT
ENT
Ͼ
Ͼ
Ͼ
Ͼ
Ͼ