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4
CALIBRATION
Calibration is to adjust and match the measured and actual values and required to maintain
accurate measurement and system performance.
4.1
Calibration Patterns and Cycles
Periodic calibration is required.
Calibrate the values using any of the following patterns.
Std. item
◎ Recommended calibration
Measurement
Calibration pattern
item
Zero calibration and span
calibration
pH
Adjustment calibration using
sample water
(Zero calibration)
Turbidity/
color/residual
Automatic zero-calibration
chlorine
Common zero-calibration
and span calibration
Individual zero calibration
Turbidity
and span calibration
Adjustment calibration using
sample water
(Zero calibration)
Common zero-calibration
and span calibration
Individual zero-calibration
Color
and span calibration
Adjustment calibration using
sample water
(Zero calibration)
Common zero-calibration
and span calibration
Individual zero-calibration
Residual
and span calibration
chlorine
Adjustment calibration using
sample water
(Span calibration)
Adjustment calibration using
Water
sample water
pressure
(Zero calibration)
Calibration cycles
System
Daily
startup
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4 CALIBRATION
○ Simple calibration
Every 3
Abnormality
months
occurrence
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(Check
only)
Procedure
reference
page 24
page 29
page 82
page 64
page 48
page 62
page 32
page 37
page 40
page 64
page 68
page 62
page 71
17
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