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Auto-zeroing is a technique that dynamically shifts out of the offset voltage and offset voltage drift, reducing the offset voltage at the opposite input to the pV level [26]. The system automatically zeros to remove the offset caused by the input circuit, the amplifier circuit and the analog-to-digital conversion, and the effects of various drifts caused by time and temperature.
The traditional zeroing method of the chromatograph is manually adjusted by the mechanical potentiometer installed on the control panel. Based on the manual zero method and modern IC technology, this paper proposes an automatic zero adjustment method, which uses software to automatically control the hardware method, which realizes automatic zero adjustment conveniently and quickly. The basic idea of the algorithm is: by comparing the steps of manual zero adjustment, comparing the measured value with the preset threshold value to determine whether to return to zero; if not zero, change the compensation signal size; repeat the above steps until zeroing. The method adopts the method of software automatic control adjustment to realize the automation of instrument zero adjustment. sampler vials manufacturer
This is the end of the introduction of Automatic zero adjustment function analysis. I hope it can help you.
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