Ashcroft GC55 - Differential Pressure Transducer with Digit Manuel d'utilisateur Page 14

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Entering the setting value in function setting mode resets all of the setting
values including the switch. Please note that when the reset setting values
are out of the display range, they will be adjusted to an upper or lower limit
value that can be processed internally.
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Select “Switch Operation Selection” with the key. The message
is displayed for 1 sec. and then the
current setting is displayed. Select either hysteresis or switch operation dis-
play with the ▲▼ keys.
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Select “Display Selection” with the key. The message
displayed for 1 sec. and then the current setting is displayed. Select
pressure display by PSI or display scaling (Arbitrary units defied
by user) with the keys.
Scaling Display of DP (Used for arbitrary unit, user defined, scaling)
When the is selected in“Display Selection”, the display value of
DP for applied pressure displays as an arbitrary scaling display. This is a
function to scale the min/max display value for DP display and has no effect
on applied pressure and analog output.
Select “Display Scaling of DP with the key. The message is
displayed for 1 sec. and then the current setting mode’s decimal point posi-
tion is displayed. Change the decimal point position value with the ▲▼ keys.
The pressure range min/max value can be set in the same way using the
and ▲▼ keys. The pressure range min/max display values are
stored internally as operation coefficients. When “Display Scaling”
is selected, these coefficients are used for scaling and LED display.
Ex.) With a pressure range of 0 to 150 psid (0 to 100% F.S.), main unit dis-
play of 000.0 to 150.0 (factory set) is changed to a display of 0.000 to 1.000.
(User defined unit, in this case 1MPa)
Dec. point position (from least significant digit): 0.1
.003
Min. pressure range value: 0.0
.000
Max. pressure range value: 150.0
1
.000
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The GC55 is equipped with 5 internal time constant filters. Use this function
when pressure fluctuations can result in erratic, difficult to read displays. The
time constant for the selected filters reflects on the switch outputs as well as
the analog output.
Select “Filter Selection” with the MODE key. The message is dis-
played for 1 sec. and then the current setting mode’s decimal point position
is displayed. Change the decimal point position value with the ▲▼ keys.
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