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Method for Performing Temperature Compensation for Maximum Sensor Current and Test Tone Amplitude During Meter Verification
Method for Performing Temperature Compensation for Maximum Sensor Current and Test Tone Amplitude During Meter Verification
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机译:在仪表校验过程中对最大传感器电流和测试音幅进行温度补偿的方法
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摘要
A method of determining optimal resistance and compensating for temperature variations in determining a test tone is presented. The optimal resistance in a drive circuit amplifier and drive coil and using the optimal resistance to improve the accuracy of a test tone used in the calibration of a flow meter is presented. The optimal resistance is calculated using a linear extrapolation of the resistance change of the circuit with respect to temperature. The optimal resistance is then used to calculate the proper maximum sensor current (MSC) value using an equation derived from Ohm's law, and from the MSC a test tone level is calculated.
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