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1. What are the methods for zero adjustment of oil mass flow meters? There are three main methods for zero adjustment of oil mass flow meters: static zero adjustment, dynamic zero adjustment, and zero calibration program zero adjustment.
1. Static zeroing This method requires the flowmeter to be in a completely static state. Manually close the front and rear valves of the pipeline to stop the flow of oil, let it stand for about 15-30 minutes to eliminate residual vibration, and then enter the zero point correction function through the equipment operation interface. In typical scenarios such as when a new device is first debugged or restarted after maintenance, installation errors can be eliminated by static zeroing. After understanding the principle of static zeroing, lets look at another situation - when the equipment needs online maintenance, static zeroing becomes limited. At this point, turn to
2. Dynamic zeroing. This method allows oil products to pass through a flow meter at extremely low flow rates (usually below 1% of the range), and real-time zero point error

Thirdly, zero calibration program is used to zero. These types of devices are usually equipped with human-computer interaction interfaces. After the operator enters calibration mode, the system will prompt the input of compensation parameters such as current ambient temperature and pipeline pressure, and then trigger a self checking program to complete calibration. The measured data of a certain imported flowmeter model shows that using a calibration program can reduce zero temperature drift by about 70%.

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