Yokogawa GD40 Gas Density Detector - Manual (Page 169)

<10. HYDROGEN PURITY / CALIBRATION PROCEDURE>
10-2
IM 11T3E1-01E
10.3 Calibration
In the manual calibration mode, visually check that the reading has settled, and then confirm the
reading manually (by pressing the [ENT] key).
[NO] [NO]
0.0899
H2
MAN.CAL
[YES]
* 1
ALM.10
ZERO
[YES]
Measurement mode
* 2
* 5
* 3
[NO]
1.9971
CO2
[YES]
* 5
SPAN
* 4
X.XXXX
CAL.SET
X.XXXX
CAL.SET
[ENT]
[ENT]
[ENT]
[ENT]
* 4
* 5
* 3
[NO]
*1: See "Figure 7.2 Modes of Operational Level" on page 7-7.
*2: If a calibration data error occurs, the display shows ALM.10 .
Pressing the [YES] or [NO] key returns this status to the [MAN.CAL].
*3: The displayed value is fixed. It cannot be set.
*4: When the reading settles, press the [ENT] key to confirm your calibration.
This parameter does not accept input with the [ ] and [ ] keys.
The display always shows the corrected density.
*5: Pressing the [NO] key for both the [ZERO] and [SPAN] indications returns
this status to the [MAN.CAL].
Zero-point density (H
2
gas) is displayed.
Close the zero gas valve.
Close the sample gas valve.
Span-point density (CO
2
gas) is displayed.
Close the span gas valve.
Open the sample gas valve.
Open the zero gas valve.
Press [ENT] key after the value is stabilized.
Open the span gas valve.
Press [ENT] key after the value is stabilized.
S_GAS
F1003.ai
DISP
Figure 10.2 Manual Calibration Mode