Yokogawa Standalone MW100 - Manual (Page 60)

1-46
IM MW100-01E
Initial Balancing (Unbalance Adjustment)
When configuring a bridge circuit with a strain gauge, due to the slight deviation in
resistance of the strain gauge, the bridge circuit will not necessarily be balanced even if
the strain of the circuit under test is zero, and the measured value may not be zero (the
value in such cases is called the initial unbalanced value).
Therefore, when taking measurements you must first balance the bridge and if the strain
is zero, obtain a measured value of zero. This is called initial balancing (setting the initial
unbalanced value to zero).
Measured value
Strain
Initial unbalanced value
Reset
Initial balance
0
With the MW100, initial balancing is performed in the ±10000 µstrain range.
Initial balance: The value when the command is executed is taken as the initial
unbalanced value, and the measured value is set to zero.
Reset: The value set during initial balancing is reset to zero. The initial
unbalanced value is used for the measured value as-is.
Note
If the measurement range is changed, the initial balancing is reset.
After a range change, you must redo initial balancing.
Initial Balance Selection Items
Type Notation Description
Reset Reset Resets the initial balance values.
Execute Execute Balancing Executes initial balancing.
1.8 Functions of the 4-CH, Medium-Speed Strain Input Module