Dwyer PSX2 - Manual (Page 80)

71
(2) OUTPUT CALIBRATION ZERO/SPAN: when calibrating measured value
(output calibration function)
This function enables you to set
correction values.
[Settable range of zero point:
–5.000 m/s to 5.000 m/s]
[Settable range of span:
10 to 200%]
[Operation]
(1) Press the or key on the OUTPUT CONTROL
screen and select “CALIBRATION ZERO” or
“CALIBRATION SPAN”. Then, press the
ENT key,
and the cursor moves to the set item, enabling you to
make zero/span setting.
(2) Press the or key to move the digit, and use the
or key to enter a numeric value. After entry,
press the ENT key for setting.
0
Correction
0 100
100
Calculation of output value
After correction
Before correction
Flow (%) Flow velocity
105
Zero point shift Span shift
Measured
value
= Output value
Set span value
100
+ Set zero-point value
Output after correction
×
As output is corrected, measured value changes.
It is recommended to set as follows unless correction is required.
Zero point: 0.000 m/s
Span point: 100.00%
CAUTION
Bulletin F-9-PUX2