2-25
IM DL850E-01EN
Setting the Sensor (Sensor Setup)
Bridge Voltage (Excitation)
You can select the voltage to apply to the bridgehead.
• 2V: When the bridgehead resistance (bridge resistance) is 120 Ω to 1000 Ω
• 5V
*
: When the bridge resistance is 350 Ω to 1000 Ω
• 10V
*
: When the bridge resistance is 350 Ω to 1000 Ω
You cannot change the bridge voltage during waveform acquisition.
* The bridge voltage can be set to 5 V or 10 V only when:
• The bridge resistance is 350 Ω or more
• The strain gauge transducer supports a bridge voltage of 5 V or 10 V
Gauge Factor (Gauge Factor)
You can set the gauge factor of the strain gauge.
Selectable range: 1.90 to 2.20 (in steps of 0.01)
The gauge factor is a constant that is unique to the gauge. It should be listed in the manual or other
documentation for your gauge. You cannot change the gauge factor during waveform acquisition.
Gauge Factor When mV/V Is Selected (Gauge Factor: K)
On the DL850E/DL850EV, you can specify the gauge factor. If there is no recommended gauge factor for the
strain gauge transducer, set the gauge factor to 2.00. For factors other than 2.00, e is computed with in the
DL850E/DL850EV using the following equation.
e = (4/K) × (V/E)
e: The measured value of the strain gauge transducer (mV/V).
V: The measured bridge voltage (mV)
E: The applied bridge voltage (V)
K: The gauge factor
When you change the unit of a channel, the units for all the items related to the channel change.
• Upper and lower limits (Upper/Lower)
• Trigger level (Level)
• Automated measurement values of waveform parameters, cursor-measurement values, etc.
Performing Strain Balancing (Exec Balance)
You can automatically compensate for the unbalanced part of the bridge resistance. It takes a few seconds for
balancing to be performed.
Range within which balancing is performed:
• ±10000 μSTR (when μSTR is selected)
• ± 5 mV/V (when mV/V is selected)
Bandwidth (Bandwidth)
You can set the bandwidth limit to 10 Hz, 100 Hz, 1 kHz, or Full.
Display Range (Upper/Lower)
To display the measured waveform on the screen clearly, you can set upper and lower display range limits that
are appropriate for the input.
Selectable range:
• −3.0000E+04 to +3.0000E+04 (when μSTR is selected)
• −1.5000E+01 to +1.5000E+01 (when mV/V is selected)
Set the limits so that the upper limit is greater than the lower limit.
2 Vertical Axis