3-14
IM CA700-02EN
Adjusting the Pressure Transmitter
11.
In the calibration display, press
Adjust (F4)
.
A display for monitoring the pressure transmitter output appears.
Pressure transmitter output
(loop current)
Pressure transmitter input
(pressure)
Pressure transmitter input value at the adjustment point
Error in the pressure transmitter output
12.
Press
Span100% (0%) (F1)
,
Step Up (F2)
, and
Step Down (F3)
to set the adjustment point.
The adjustment points are the same as the calibration points.
Here, we will adjust the 0% point.
13.
Press
Loop On (F4)
. The CA700 outputs a 24 VDC loop voltage and measures the loop
current.
14.
From the pressure pump, apply the pressure for the adjustment point (50 kPa here). The
pressure pump output is displayed on the CA700.
The pressure transmitter output is displayed on the CA700.
15.
Adjust the pressure transmitter so that the loop current value displayed on the CA700 is within
the tolerance.
Adjust so that the pressure transmitter output error
is within the tolerance.
Pressure transmitter output current
corresponding to 50 kPa pressure
Pressure at adjustment point 0%
16.
Press
Span100% (0%) (F1), Step Up (F2)
, and
Step Down (F3)
to change the adjustment
point, and repeat steps 13 to 15.
17.
When you finish adjusting all adjustment points, press
Adjust Done (F5)
or
ESC
.
The calibration display returns.
Saving the Calibration Data after Adjustment
18.
In the calibration display, press
As Left (F5)
.
The display switches to the source and measure value display.
19.
Using the same procedure as in “Saving Calibration Data at Calibration Points,” save the
calibration data after adjustment.
20.
When you finish saving the data of all calibration points, press
Done (F5)
.
The calibration data of all calibration points are saved to a single CSV file, and the calibration result is
shown on the display.
3.3 Calibrating the Pressure Transmitter
Summary of Contents for CA700
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