Ashcroft GC52 - Rangeable wet/wet Differential Pressure Tra Manual de usuario descargar pdf (Pagina 16)

䡵 Display and analog output

Ex. Differential pressure of 8 inH

• Differential pressure display: 8.00(H

• Analog output: 12(mA) in.H

8.00

Differential

Pressure Analog

Display Output

(inH

O) (mA)

Output span point 18.00 ==> 20

兰兰

8.00 ==> 12

Output zero points –2.000 ==> 4

Setting example 1 : Differential pressure display mode

The setting to use the differential pressure range 0 to 20in.H

O (“W.C.)

and to display the zero point and span point of the analog output as –2

in.H

O and 18 in.H

O respectively is as follows:

In the example the filter (moving average time) is set at 2 seconds, the

differential pressure display and the analog output are based on the

moving average equivalent to the differential pressure data per 100ms

for the past 2 seconds (20 times).

Select the filter of “2 seconds” ==> Setting item 햲

Select the “Differential pressure display mode” ==> Setting item 햳

Set output zero point as “–10.0%F.S.” ==> Setting item 햴

Set output span point as “90.0%F.S.” ==> Setting item 햵

11.3 Linear Display Mode (Re-scaling in arbitrary user defined units)

This mode is used for display / analog output of the scaling value

where the differential pressure is linearly converted to an arbitrary

physical quantity.

(1) Linear display

By setting the OFFSET to the minimum differential pressure P

and the FULL SCALE to the maximum differential pressure P

the linear display indicates the value on the line between the two

points (the maximum display span). The actual linear display

span depends on the setting of the zero point and span point of

the analog output as shown in (2) of the next page. It can display

the range of –5 to 105%F.S. of the linear display span.

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Ashcroft GC52 - Rangeable wet/wet Differential Pressure Tra Manual de usuario Pagina 16