Electromagnetic flowmeter site installation precautions

Case introduction

Electromagnetic flowmeter on-site installation schematic diagram and precautions·should be installed at the lower and vertical points of horizontal pipelines, and avoid installation at the highest point and vertical downwards of the pipeline;

·should be installed At the rising point on the pipe;

·When installing in an open discharge pipe, it should be installed at the lower part of the pipe;

·If the pipe drop exceeds 5m, install a discharge pipe downstream of the sensor. Air valve;

·Control valve and shut-off valve should be installed downstream of the sensor, and should not be installed upstream of the sensor;

·The sensor cannot be installed at the inlet and outlet of the pump, and should be installed at the inlet and outlet of the pump. Installed at the outlet of the pump;

·How to install the flow meter in the measuring well

1. Inlet

2. Overflow pipe

4. Cleaning hole

5. Flow meter

6. Short pipe

7. Exit

8. Discharge valve

How to correctly select the installation node:

Correctly selecting the installation point and correctly installing the flow meter are both very important links. If during installation Mistakes in these steps may affect the measurement accuracy, or may affect the service life of the flow meter or even damage the flow meter.

Special attention should be paid when selecting the installation location:

·The axis of the non-measuring electrical instrument must be approximately horizontal;

·The measuring pipe must be completely filled with liquid;

·There must be a straight pipe section of at least 5*D (D is the inner diameter of the flowmeter) in front of the flowmeter, and a straight pipe section of at least 3*D (D is the inner diameter of the flowmeter) behind the flowmeter;

·The flow direction of the fluid is consistent with the direction of the arrow on the flow meter;

·If there is a vacuum in the pipeline, it will damage the lining of the flow meter, so please be careful;

·There should be ample space near the flowmeter for installation and maintenance;

·If there is vibration in the measuring pipe, There should be fixed supports on both sides of the flowmeter. When measuring mixed liquids of different media, the distance between the mixing point and the flowmeter should be at least 30×D (D is the inner diameter of the flowmeter) to facilitate future cleaning and maintenance of the flowmeter. , a bypass pipe should be installed;

·When installing a PTFE-lined flow meter, the bolts connecting the two flanges should be tightened evenly, otherwise the PTFE lining will be easily crushed, use torque wrench.