Hioki MR8827, Instruction Manual

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151
Convert Input Values (Scaling Function)
8.5 Convert Input Values (Scaling Function)
About the Scaling Function
Use the scaling function to convert the measured voltage units output from a sensor to the physical units
of the parameter being measured.
Hereafter, “scaling” refers to the process of numerical value conversion using the Scaling function.
Gauge scales, scale values (upper and lower limits of the vertical axis [voltage axis) and AB cursor
measurement values can be displayed in scaled units.
Scaling is available for each channel.
Before Scaling After Scaling
[ A ]
Scaling Examples
Refer to “When using a clamp sensor” (p. 153) (Example: Converting [ V ] to [ A ]) or “When using the Strain Unit ”
(p. 154) (Example: Converting [ με ] to→ [ G ]).
Scaling Methods
Two scaling methods are available:
• Conversion Ratio Setting
• Two-Point Setting
Set with a Conversion Ratio
(Example: Converting [V] to [A])
Set the physical value per volt (conversion ratio: eu/
V) of the input signal, an offset value and measurement
unit name (eu: engineering units) for conversion, so
measurement values acquired as voltage are converted to
the specified units.
(Example)
Conversion ratio: A value per volt, Offset value: B
Unit name: A
[A]
B
Convert from slope (conversion
ratio) and offset value
[V]
Set with Two Points
Set the voltage values of two points of the input signal, the
converted unit value of these two points and the name of
the converted measurement units, so measurement values
acquired as voltage are converted to the specified units.
(Example)
Voltage value at 2 points Voltage of units to convert
V
H
: Higher potential point A
H
: Value for higher potential
point
V
L
: Lower potential point A
L
: Value for lower potential
point
Unit name: A
[A]
A
H
A
L
V
L
V
H
Conversion ratio and offset value are
calculated from the two points and converted
Converted unit values
Actual measurement values
[V]
When the conversion ratio setting is changed, V
L
and V
H
set with two points do not change but the
values for A
L
and A
H
change.
8
Utility Functions