10
○
6
If you use a long wire, please use a balanced leading line so that you can
minimize the noise.
4-6. Notes for Static measurement
You must make sure that the cable resistance between each gauge lead wire is
regular. If it is not, the measurement value can be changed by the surrounding
temperature. Please pay your special attention for this point.
Please carry out the following procedures.
○
1
You must us 3-line for Quarter Bridge.
○
2
To minimize the effect by the temperature change, it is ideal to put all the used
lead wire in the same wire bunch.
○
3
To build the precise data when you use a long wire, please do the
compensation considering the resistance of lead.
(Example : The thickness, length of the wire and its proper resistance etc)
4-7. Output connection
Output
10V can read the voltage output value as in oscilloscope, volt meter
and A/D board on the output connector.
4-8. Controlling proper sensor voltage
Sometimes when you do the stress analysis, the high proper voltage to the active
gauge might be required. When the proper voltage is high, the output will be big
so that you do not have to amplify too much. But when the high voltage is applied
to the gauge with low resistance, an error in measurement can be occurred since
the joule heat might be generated on the gauge. So the most suitable condition
should be found since the resistance on the gauge and proper voltage are very
important. In addition to the gauge with high resistance (over 350Ω) or the long
and wide gauge, you can increase the proper voltage at the place where the
heat-sinking (aluminum etc) easily can be done.
Please avoid increasing the proper voltage with the gauge below 120Ω or at the
place where the heat-sinking cannot be done such as plastic.
Normally the gauge proper voltage should be 10%~100% of the recommended
