Select the pressure head position:

1. Avoid areas where pipes bend, branch, or create vortices in the flow of crossbeams.

If there are protruding objects in the pipeline (such as temperature measuring elements), a pressure head must be placed in front of them.

When pressure needs to be applied near the regulating valve, if the pressure head is in front of it, the distance from the valve must be greater than twice the diameter of the pipeline. If the pressure head is at the back, the distance from the valve must be greater than three times the diameter of the pipeline.

4. For the tolerance device, the pressure port should be placed in a place where the fluid activity is stable and there is no vortex. In summary, the confirmed pressure intake position during the process should ensure that the selected process parameters can be measured. Laying connecting pipelines: The horizontal part of the connecting pipeline should have a constant inclination to facilitate the discharge of condensate or gas. If the measuring medium is gas, the pipeline must be inclined towards the pressure tap. If the measuring medium is a liquid, the conduit must be tilted towards the pressure measuring instrument. If the measured parameter is a small differential pressure value, the inclination angle may slightly increase. In addition, if the pipeline is located at the top and bottom corners, the condensate drainage device should be placed at the lowest point or the exhaust device should be placed at a higher position according to the medium conditions in the pipeline to ensure that the measurement accuracy is not affected by the long-term accumulation of condensate or gas in the pipeline. The condensate or gas must be discharged regularly.

Precautions for installation and use of pressure measuring instruments:

The machine must be installed perpendicular to the horizontal plane.

2. The measuring points of the machine and the setting of the machine must be at the same horizontal position, otherwise additional height errors need to be considered for modification.

3. The distance between instrument installation and measurement points should be as short as possible to avoid slow display.

4. Ensure airtightness and no leakage, especially for flammable and explosive gas media and toxic and harmful media.

When using the device under the following conditions, it is necessary to add the device, but no other errors have occurred, otherwise modifications need to be considered.

To prevent corrosion, high viscosity, or crystallization of the measured medium, isolation devices must be installed.

2. Add a buffer zone to avoid being affected by rapid changes in the measurement medium or fluctuating pressure. Especially in the case of pressure surges and drops, there is a possibility of damaging the pressure gauge and scrapping it, as well as cracking and exposure of the spring tube.

In order to prevent the instrument from being affected by vibration, pressure instruments must be equipped with damping devices and fixing devices.

To prevent the instrument from being affected by the high temperature of the measuring medium, a liquid filled pipeline bending device should be installed.

5. Special instruments shall not be used for other purposes or for measurement without special reliable devices. It is strictly prohibited to use ordinary pressure gauges in pressure measurement of special media.

Before installing and operating a new pressure gauge, measurement and verification must be carried out to prevent vibration, damage, or other factors from damaging the accuracy of the pressure gauge during transportation.