Hioki Memory HiCorder MR6000, Instruction Manual, Page: 65 / 392

59
Converting Input Values (Scaling Function)
When using Model U8969 Strain Unit
When an inspection record of a strain gauge converter provides a calibration
factor
Example: To display waveform data measured with a strain gauge converter that has a
calibration factor of 0.001442 G/1 × 10
−6
strain* as figures in gravities (G)
(*: 10
−6
strain =
me
)
Scaling On (ENG)
Method Ratio
Units
G
Ratio 0.001442 [G] (Displayed as “1.4420 m”)
When an inspection record of a strain gauge converter provides the rated
capacity and rated output
See “When using the [Rating] setting” in “3.2 Converting Input Values (Scaling Function)”(p. 58).
When using a strain gauge that has a gauge factor of other than 2.0
Model U8969 Strain Unit measures outputs of the gauge supposing that the gauge factor stands at
2.0.
When a strain gauge that has a gauge factor of other than 2.0 is used, you need to convert its
gauge factor into a conversion ratio.
For example, if the gauge factor stands at 2.1, the conversion ratio will be 0.952 (≈ 2 / 2.1).
Example: To display waveform data measured with a strain gauge (gauge factor: 2.1) as figures in
gravities (G)
Converting output into physical quantities requires the two scaling (s) calculations: multiplying
output by the gauge ratio and by a conversion ratio. In this case, enter the product of the conversion
ratios of the gauge factor and the scaling conversion ratio as the conversion ratio.
Where the conversion ratio of the gauge factor is 0.952, and the conversion ratio to convert data
into physical quantities is 0.001442*.
Conversion ratio = 0.952 × 0.001442 = 0.0013728
Enter [0.0013728] as the conversion ratio.
*: To convert values measured with a strain gauge into physical quantities, calculate the conversion ratio
based on Young’s modulus or Poisson’s ratio of a measurement object. The conversion method varies
depending on the conditions the strain gauge is used in.
See “Scaling method for strain gauges” (p. 367).
Advanced Functions
HIOKI MR6000A966-03