Ashcroft GC55 - Differential Pressure Transducer with Digital Display User Manual

Page 15

Entering the setting value in function setting mode resets all of the setting

- - - - -

No filter

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Time constant 25ms

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Time constant 250ms

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Time constant 2.5 sec

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Time constant 5 sec

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Time constant 10sec

Analog selection

Select “Analog Selection” with the

key. The message is

displayed for 1 sec. and then the pressure of analog output is displayed.
Select DP, P1 or P2 with the

▲▼

keys.

Analog output scaling

This mode is for setting the pressure for the analog output zero point and
span point.

Display by analog selection is scaled as 0 to 100% (Zero point : 1Vdc or
4mA dc, Span : 5Vdc or 20mA dc). Select “Analog Scaling” with the

key. The message

is displayed for 1 sec. and the current

pressure’s analog output zero point (1Vdc) is displayed as a percentage.
Change the numeric value with the

▲▼

keys.

The analog output span point’s

pressure can be set in the same way

using the

and

▲▼

keys.

Ex.) With Analog output of 1 to 5Vdc at pressure range of 0 to 100 psid (0
to 100%F.S.), output is changed to 1 to 5Vdc at 0 to 90 psid.

Press. at time of analog output zero point: 0.0% F.S.

→

0.0% F.S.

(1Vdc output with pressure range 0% F.S.)

Press. at time of analog output span point: 100.0% F.S.

→

90% F.S.

(5Vdc output with pressure range 90% F.S.)

10. switch setting Mode

setup

In Measurement Mode press the

key (release within 3 sec.) to

change to Switch Setting Mode.

switch setting Mode

There are two switches, OUT1 and OUT2. Both “Hysteresis (upper/
lower limit)” and “Window Comparator” operations can be selected in the
function setting mode (switch operation selection). Those two operations
can be selected at once, and can be set. Both OUT1 and OUT2 can be set

a-k

a-l

a-k

a-l

ana

MODE

f-5

f-4

f-3

f-2

f-1

f-0