2-26
IM DL850E-01EN
Range Unit (Range Unit)
Set the range unit.
• μSTR: Units of strain (×10
−6
strain)
• mV/V: Units of strain-gauge-transducer output
*
The default setting is μSTR. The relationship between μSTR and mV/V is shown in the equation below.
(mV/V) = 0.5 × (μSTR)/1000
Example
500 (μSTR) -> 0.5 × 500 (μSTR)/1000 = 0.25 (mV/V)
* A unit that corresponds to the strain gauge transducer’s output. It indicates the amount of transducer output in
mV
that corresponds to 1 V of applied bridge voltage. On the DL850E/DL850EV, the bridge voltage (excitation:
applied bridge voltage) can be set to 2 V, 5 V, or 10 V, but the mV/V values are converted and displayed, so
the measured values normally remain constant.
Trace Settings (Trace Setup)
Inverted Waveform Display (Invert)
Linear Scaling (Linear Scale)
The 701271 (STRAIN_DSUB) supports shunt calibration.
• When you measure strain, be sure to perform balancing.
• Set the bridge voltage to 5 V or 10 V only when the bridge resistance is 350 Ω or greater. The strain will
not be measured properly if you apply a bridge voltage of 5 V or 10 V when the bridge resistance is 350 Ω
or less.
• When
you use a strain gauge transducer, be sure to use it at a bridge voltage that is within the transducer’s
recommended voltage range.
•
Balancing cannot be performed if there is no strain measurement bridge (bridgehead) or strain gauge
transducer connected to the channel that you are trying to perform balancing on.
• When you perform balancing on all channels, if balancing fails on even one of the channels, an error
message will appear along with information about the channels for which balancing failed.
• After you turn on the power, connect a new strain gauge, or change the measurement range, bridge
voltage, or gauge factor, you need to perform balancing again before you perform measurement.
The scale value is displayed as “imbalance” immediately after you turn on the power or when you change
the range. In this kind of situation, perform balancing.
•
When you change the unit of a channel, the units for all the items related to the channel change. This
includes the upper and lower limits, trigger level, automated measurement values of waveform parameters,
and cursor-measurement values.
2 Vertical Axis
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