Option Grade table

Description

For cold width calculation the gauge uses a thermal expansion coefficent which can be set in the setup message sent to the gauge. The coefficient of expansion α varies with the temperature of the materials. To take into account this variation, the curv giving α at different temperature can be entered in the gauge.

File format

Format: {“Grade num”, [“Grade name”, [temperature value], [α coefficent value]], ….}

The value of α between 2 temperatures given in these tables is obtained by a linear interpolation.

The grade table file is available in the “plugin” folder. Each plugin folder includes a file giving the value of α at different temperature. The plugin can be selected in the “Setup gauge” menu.

Example

Grade table file:

{
    "1": [
        "Fe Carbon (C < 0,4%)",
        [
            20.0,
            500.0,
            600.0,
            700.0,
            740.0,
            800.0,
            840.0,
            900.0,
            1000.0,
            1100.0,
            1150.0,
            1200.0,
            1250.0
        ],
        [
            14.326,
            14.326,
            14.593,
            14.779,
            14.205,
            13.455,
            13.016,
            12.432,
            13.18,
            13.786,
            14.048,
            14.286,
            14.505
        ]
    ],
}