Yokogawa GD40 Gas Density Detector User Manual
Page 136
<7. HYDROGEN PURITY / PARAMETER SETTING>
7-13
IM 11T3E1-01E
2. Alarm-point Setting Mode [*ALARM]
Set the upper /lower limits for the measured values of the parameters noted below, for the pur-
pose of raising an alarm.
(a) Select a parameter for which alarms are raised.
・ Physical density [*DENS]
・ Compensated density [*C_DNS]
・ Hydrogen purity [*H_A]
Press the [YES] key to enter the desired mode when it is indicated.
(b) Set the high/low limits.
・ Physical density [*L_DNS], [*H_DNS]
Configure range:
00.0000 to 60.0000 (kg/m
3
),
0.00000 to 4.00000 (lb/ft
3
)
・ Compensated density [*L_CP.D], [*H_CP.D]
Configure range:
0.0000 to 6.0000 (kg/m
3
),
0.00000 to 0.40000 (lb/ft
3
)
・ Hydrogen purity [*L_H_A]
Configure range:
0.0 to 100.0
*1: See "Figure 7.4 Process at the Setting Level" on page 7-10.
*2: The display shows the previous parameter first.
*3: This step is skipped when the replacement meter is selected.
[NO]
[ENT]
[ENT]
*ALARM
[NO]
XX.XXXX
*L_DNS
*CAL.DT
*SERVC
*DENS
XX.XXXX
*H_DNS
X.XXXX
*L_CP.D
X.XXXX
*H_CP.D
XXX.X
*L_H_A
(Physical density)
(Compensated density)
(Hydrogen purity)
*H_A
[ENT]
[ENT]
[ENT]
[YES]
[YES]
[YES]
[NO]
[NO]
[NO]
*C_DNS
F0706.ai
[YES]
*
1
*
2
*
3
*RANGE
[NO]
Figure 7.6 Process of the Alarm-point Setting Mode