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4.10.6. How to compensate the measurement value
Description
Measurement value can be calibrated arbitrarily.
Zero point and span adjustment can be made.
Settable range
(1) Zero point : -5 to +5 [m/s] in terms of flow velocity in
piping.
(2) Span : ±200%
The output value (reading, analog output and total output)
is computed by the following expression.
Output =
Measurement value × [Span set value %]
100
+ Zero point
For actual keying, refer to the typical operation indicated below. Set the protection to OFF beforehand. (See Section 4.4.1.)
Operation
(example)
Compensate the zero point to 0.5m
3
/h, and the span by +1%.
Key operation Description Display
▼
Press the key twice to display “OUTPUT SETUP”.
OUTPUT SETUP
ENT
▼
Press the
ENT
key once to display “ZERO ADJUSTMENT”.
ZERO ADJUSTMENT
SET ZERO
▼
Press the key for 8 times to display “CALIBRATION ZERO”.
CALIBRATION ZERO
0.000 m3/h
ENT
▼
Press the
ENT
key once to blink the cursor.
CALIBRATION ZERO
00000.000 m3/h
▼
Press the key for 6 times to move the cursor.
CALIBRATION ZERO
00000.000 m3/h
▼
Press the key for 5 times to set “5”.
CALIBRATION ZERO
00000.500 m3/h
ENT
▼
▼
▼
▼
Press the
ENT
key once to register.
CALIBRATION ZERO
COMPLETE
↓
――― “CALIBRATION ZERO” has been registered. ―――
CALIBRATION ZERO
0.500 m3/h
▼
Press the key once to display “CALIBRATION SPAN”.
CALIBRATION SPAN
100.0 %
ENT
▼
Press the
ENT
key once to blink the cursor.
CALIBRATION SPAN
100.0 %
▼
Press the key twice to move the cursor.
CALIBRATION SPAN
100.0 %
▼
Press the key once to set “1”.
CALIBRATION SPAN
101.0 %
ENT
▼
▼
▼
▼
Press the
ENT
key once to register.
CALIBRATION SPAN
COMPLETE
↓
――― “CALIBRATION SPAN” has been registered. ―――
CALIBRATION SPAN
101.0 %
ESC
Press the
ESC
key once and then press the key for 3 times to enter
the measurement mode.
0.000 %
0.000 m3
Output
0
Zero adjustment movement
Output
0
Span movement
100%
Flow rate Flow rate
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