Flowmeter selection type installation maintenance and maintenance of several major factors:
1. There must be no strong external magnetic field interference and strong mechanical vibration around the flowmeter. Before installation, environmental conditions should be reviewed and used in accordance with its use requirements for normal use;
2. When the flowmeter is installed outdoors, the upper part shall be covered to prevent rainwater dripping and sun exposure from affecting the life of the flowmeter; the flowmeter may be installed at any angle, the direction of fluid flow is consistent with the direction indicated on the housing, and the flowmeter The upper and lower reaches of the pipeline are guaranteed to have straight pipe sections of 3DN and 1DN respectively;
3. The flowmeter should be installed coaxially with the pipe. The connection of the flange screw holes should be parallel to the pipe axis and prevent the gasket and grease from entering the pipe cavity; if necessary, a filter can be installed upstream of the flowmeter to filter out the medium. Particle debris;
4. When installing flowmeters and measuring pipelines, consider installing telescopic tubes and corrugated tubes, and according to the actual size of the flowmeter, properly lay upstream and downstream pipelines so that the deformation of flowmeters caused by pipeline stress is minimized;
5. The flow meter volume corrector shell is provided with a grounding screw. When using it, it must be grounded as specified, but it must not share the ground wire with the strong electric system; when installing or testing on the pipeline, the ground wire and flow wire of the welding system must not be grounded. Lap
6. During use, users are not allowed to change the linking method of the explosion-proof system and change the interface of each lead wire. The introduction cable has an outer diameter of 8-8.5mm, and the remaining introduction holes are blocked by applying plugging. The installation and use and maintenance must comply with the relevant provisions of the design specifications of the electrical installations for explosion and fire hazard areas.
7. When the flowmeter needs signal remote transmission, it shall strictly follow the “electrical performance index†to access the external power supply, and it is forbidden to directly connect the 220VAC or 380VAC power supply at the signal output port; it is forbidden to use the standard welding connection method when installing the flowmeter. Lan, it is recommended to use process piping so as not to burn the internal parts of the flowmeter;
8. For newly installed or overhauled pipelines, purging must be strictly performed. Remove the impurities in the pipeline and then install the flowmeter. During the hydrostatic pressure test and cleaning pipeline operation, remove the instrumentation process piping instead.
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