5-19
5
IM 701830-01E
Vertical and Horizontal Axes
5.15 Setting the Strain Measurement
(For Strain Module)
Function
Selecting the measurement range : Range
Select the range according to the magnitude of the strain to be measured.
20000uSTR, 10000uSTR, 5000uSTR, 2000uSTR, 1000uSTR
uSTR stands for 10
-6
strain.
For the measurement range, see section 15.24.
Selecting the display range : Upper Scale/Lower Scale
To make the viewing of the measured waveform easier, you can change the upper and lower
limits of the display range according to the input.
Setting range : –30000 to +30000uSTR
Make sure to set the upper scale value to be larger than the lower scale value.
Measurement range
Display range
Upper Scale
Lower Scale
Selecting the bridge voltage : Excitation
You can select the voltage to apply to the bridge head.
• 2 V : When the resistance of the bridge head (bridge resistance) is 120
Ω
or more.
• 5 V : When the bridge resistance is 350
Ω
or more
You cannot change the bridge voltage during a waveform acquisition.
Setting the gauge factor : Gauge Factor
You can set the gauge factor of the strain gauge.
Setting range : 1.90 to 2.20 (in 0.01 steps)
The gauge factor is a constant that is specific to the strain gauge, and is normally indicated in
the manual for the strain gauge. If the gauge factor is outside the range specified above,
calculate the measurement value according to section 5.16 “Using the Linear Scaling Function
for the Strain.”
You cannot change the gauge factor during a waveform acquisition.
Setting the bandwidth : Bandwidth
See section 5.7 “Setting the Bandwidth.”
