First, the change in ambient temperature is an important cause of zero drift of the pressure transmitter. Under extreme temperature conditions, the zero point of the pressure transmitter may be affected, resulting in drift. To solve this problem, temperature compensation technology can be used to eliminate the effect of temperature change on the zero point.
Secondly, mechanical vibration can also cause zero drift of the pressure transmitter. During normal use, if the transmitter is affected by mechanical vibration, its internal components may change, causing zero drift. To avoid this, the transmitter should be fixed in a stable machine to reduce the impact of mechanical vibration.
In addition, poor wiring is also a common cause of zero drift. Poor contact of the connecting cable or loose metal joints may introduce additional signal interference, resulting in zero drift. To solve this problem, it is necessary to check the connection of the cable and ensure that the connection is good to avoid looseness or poor contact.
Unstable power supply voltage will also affect the output signal of the pressure transmitter, resulting in zero drift. Therefore, a stable power supply should be used to supply power to avoid the influence of voltage fluctuations on the transmitter.
When solving the zero drift problem, the zero point of the transmitter can also be adjusted through calibration. The calibration process involves measuring the current zero output value and adjusting the zero setting according to the manufacturer's guidelines to match the output value with the expected value. After calibration, it is necessary to verify whether the adjusted output value meets the requirements.
In addition to the above reasons and solutions, it is also necessary to pay attention to some zero drift caused by improper installation and use. For example, the installation position is different from the position during adjustment, which may cause zero point changes. In this case, the zero position should be adjusted to eliminate the change.
For the problem of zero drift of pressure transmitter, it can be solved from the aspects of ambient temperature control, mechanical fixation, cable connection inspection, stable power supply, calibration, and attention to installation and use details.
