Matters needing attention in the use of pressure transmitter in industrial field

1. When measuring representative high-temperature media such as saturated steam or heat transfer oil, it is necessary to install condensation rings or heat sinks to reduce the temperature and damage the amplifier board of the transmitter meter.

2. If the liquid medium is measured, if it contains impurities or the instantaneous pressure is too high, it will easily cause the sensor to be damaged at the moment of pressure. In terms of transmitter structure, we can increase damping nails to reduce the impact.

3. When measuring corrosive media such as sulfuric acid, it is necessary to avoid the direct contact between the media and the sensor through the diaphragm to prevent the sensor from being corroded by strong corrosiveness.

4. When measuring the pipeline pressure, it is necessary to say that the measuring interface is installed on the upper side of the pipeline, so as to avoid blocking the pressure tap by precipitated impurities.

5. When wiring the product, pass the cable through the waterproof joint (accessory) or winding pipe and tighten the sealing nut, and wrap it with a layer of waterproof tape when necessary to prevent rainwater from leaking into the transmitter shell through the cable.

6. When the pressure transmitter is installed outdoors in the northwest cold area, it is necessary to equip the instrument incubator to make the product work normally.

The above is a summary of various situations encountered in the daily on-site installation of pressure transmitters, and it has gradually evolved into an installation standard. Users need to strictly refer to the precautions for the installation and use of Brown instrument products.

Matters in application process of pressure transmitter

Pressure transmitter has the advantages of reliable work, stable performance, convenient installation and use, small volume, light weight, high performance-price ratio and so on. It is widely used in various industrial automatic control environments, involving water conservancy and hydropower, railway transportation, intelligent buildings, production automatic control, aerospace, military industry, petrochemical industry, oil wells, electric power, ships, machine tools, pipelines and many other industries. It is suitable for measuring the liquid level, density and pressure of liquid, gas or steam, and then converting the pressure signal into a 4 ~ 20mADC signal for output.

Matters in the application process of pressure transmitter:

1. The output indicator index is zero.

Check whether the power supply electrode is connected reversely, whether the power supply voltage is 24VDC, and replace the damaged diode in the electronic circuit board or terminal block in time.

2. The transmitter cannot communicate.

Make sure that the power supply voltage of the pressure transmitter is 24VDC, and the zui value of the load resistance is 250Ω, and check whether the unit addressing is correct.

3. There is pressure change and the output is unresponsive.

Check whether the transmitter is set correctly, check and reset it, and replace the sensor module in time if it is damaged.

4. The reading of transmitter instrument is inaccurate.

Whether the standard meter is accurate in the process of calibrating the transmitter, you can replace the standard meter with higher accuracy to ensure that the instrument pressure tube is unobstructed and the transmitter is set correctly.

5. The instrument reading is unstable.

Measure whether the pressure is stable or not. If it is unstable, deal with the process in time, increase the damping and eliminate the influence of interference sources.

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