Yokogawa GD40 Gas Density Detector - Manual (Page 143)

<7. HYDROGEN PURITY / PARAMETER SETTING>
7-20
IM 11T3E1-01E
CODE 10: Setting of Pressure Compensation
This setting determines whether or not the measured density should be compensated by the gas
pressure. The density can be compensated either by receiving a signal from a pressure transmit-
ter or by using a fixed pressure setpoint.
If you want the analyzer to compensate the density using a pressure transmitter, you MUST
connect a pressure transmitter to the converter and enter the pressure input and zero and span
points with CODE 12 at the service level.
If you do not want the analyzer to compensate the density, the analyzer shows and outputs the
measured density equivalent to a value at an atmospheric pressure of unity (101.33 kPa ABS)..
(a) Enable/disable/select preset value [*P.COMP]
・Disable:
0
・Enable (value immediately before): 1
・Enable (fixed value):
2
(b) Setting of fixed value for pressure compensation [*P.FIX]
This item applies if item (a) above is set to "2".
Configurable range: 0.10 to 999.99 (for kPa),
0.0001 to 9.9999 (for MPa),
0.015 to 99.999 (for psi )
[ENT]
10
*CODE
*SERVC
X
*P.COMP
XXX.XX
*P.FIX
[ENT]
[ENT]
[YES]
F0713.ai
* 1
* 2
* 3
* 4
* 5
*1: See "Figure 7.4 Process at the Setting Level" on page 7-10.
*2: Enter the code number.
*3: Set a value using the [ ] and [ENT] keys.
*4: Set a value using the [ ], [ ] and [ENT] keys.
If you enter a value that exceeds the limits, the display shows [*OVER].
Press the [YES] or [NO] key to re-set the value.
*5: Setting 0 or 1 returns to the service level with the indication [*SERVC].
*6: The position of the decimal point changes depending on the setting of CODE 20.
If the code is set to "0" (kPa), the reading is XXX.XX;
if the code is set to "1" (MPa), the reading is X.XXXX;
if the code is set to "2" (psi), the reading is XX.XXX.
* 6
Figure 7.13 Setting of Pressure Compensation