Yokogawa GD40 Gas Density Detector User Manual
Page 134
<7. HYDROGEN PURITY / PARAMETER SETTING>
7-11
IM 11T3E1-01E
1. Analog Output Setting Mode [ *RANGE ]
The analog output has output 1 and output 2. Only output 1 can be used for communication
purposes.
Set a range appropriate for 4-20 mA DC output signals. The range has two setpoints: the lower
limit (zero point) of the range corresponding to the minimum (0%) of a given output signal and the
upper limit (span point) of the range corresponding to the maximum (100%) of the given output
signal.
(1) Output 1
[*OUT1]
(a) Select a parameter to be output.
• Physical density [*DENS]
• Compensated density [*C_DNS]
• Hydrogen purity [*H_A] *
1
• Substituents-concentration [*H_C_A] *
2
• Gas temperature [*TEMP]
• Gas pressure [*PRESS]
*1: Not selectable (i.e., not shown) if the analyzer is in the replacement (substituents-concentration) meter mode.
*2: Not selectable (i.e., not shown) if the analyzer is in the hydrogen purity meter mode.
(b) Set the zero and span points. (This item is not applied if temperature or pressure are cho-
sen as the parameter in item (a) above.)
• Physical density [*Z_DNS], [*S_DNS]
Configure range:
00.0000 to 60.0000 (kg/m
3
),
0.00000 to 4.00000 (lb/ft
3
)
• Compensated density [*Z_CP.D], [*S_CP.D]
Configure range:
0.0000 to 6.0000 (kg/m
3
),
0.00000 to 0.40000 (lb/ft
3
)
• Hydrogen purity [*Z_H_A] , [*S_H_A]
Configure range:
0.0 to 100.0
• Substituents-concentration [*Z_H.C.A] , [*S_H.C.A]
Configure range:
0.0 to 100.0
(2) Output 2
[*OUT2]
The same parameters as those of item (1) apply.
Note:If the same parameter is selected for both outputs 1 and 2, the zero/span point settings you made the last time apply when
the parameter is output.
Example:Assume you first select parameter [*H_A] for analog output [*OUT1] and set the zero/span points as 100.0/0.0, and
then select parameter [*H_A] for analog output [*OUT2] and set the zero/span points as 0.0/100.0. In that case, the
parameter is output with the 0.0/100.0 zero/span point settings for both outputs 1 and 2.