Yokogawa Integral Oxygen Analyzer ZR202 - Manual (Page 86)

IM 11M13A01-04E 7-22
7.10.2.2 Calibration Implementation
This manual assumes that the instrument air is the same as the reference gas used for the
span gas. Follow the steps below to conduct manual calibration. When using the ZO21S
Standard Gas Unit (for use of the atmospheric air as a span gas), use a hand-held oxygen
analyzer to measure the actual oxygen concentration, and then enter it.
Table 7.15 Conducting Calibration
T7.14E-1.EPS
Display Description Switch operation
A 01
b 1 0
CAL
CAL
SPAn Y
21.00
%
OPEn
/20.84
20.84
%
ZEro Y
0.98
%
Display after the password has been entered.
Switch the parameter code to B01.
(The key operations for this procedure are omitted.)
Touch the [ ENT] key, and CAL will be displayed.
[Cancel] Touch the [>] key and [ ENT ] key together to return to the B10 display.
If you touch the [ENT ] key again, " CAL " then flashes.
[ Cancel ] If you touch the [>] key and [ ENT ] key together,
the display will return to the B10 display.
If you touch the [ ENT ] key again, " SPAn Y " appears (Y is flashing).
If you omit the span calibration, touch the [>] key, and change " Y " to " N. "
If you touch the [ ENT ] key, the display then jumps to " ZERO Y. "
Touch the [ ENT ] key to display the calibration-gas value, in other words,
the span-gas concentration set in Section 7.10.1, " Calibration Setup. "
To cancel the above, touch the [>] key and [ ENT ] key together.
Then the display returns to " SPAN Y. "
If you touch the [ ENT ] key, " OPEN " and the currently measured value
are displayed alternately. Open the Flow Setting Unit span-gas flow valve and adjust
the span-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 span—gas solenoid valve,
and the measured value changes to the span-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 " SPAN Y. "
If you touch the [ ENT ] key, all the digits flash. At that point, no calibration
is conducted yet.
If you touch the [ ENT] key again, the flashing stops and " Zero Y " appears.
Close the span-gas flow valve. Secure the span-gas lock nut for leakage.
If the automatic calibration unit is connected, close the span-gas solenoid valve.
If zero-gas calibration is omitted, touch the [>] key to change Y to N.
Next, if you touch the [
ENT ] key, the display jumps to " CALEND. "
Touch the [ ENT ] key to display the calibration gas value.
This value must be the zero-gas concentration set in Section 7.10.1,
"Calibration Setup," earlier in this manual.
To cancel the above, touch the [>] key and [
ENT ] key together.
Then the display returns to " ZERO Y. "
The symbol [ ] indicates that the corresponding keys are being touched, and the light characters indicate flashing.
>
>
>
>
>
>
>
>
>
>
Ͼ
Ͼ
ENT
ENT
ENT
ENT
ENT
ENT
ENT
ENT
ENT
ENT
Ͼ
Ͼ
Ͼ
Ͼ
Ͼ
Ͼ
Ͼ
Ͼ