What problems should I pay attention to when installing vortex flow timing in pipelines?

Source: Internet
Author: User

when installing a vortex flowmeter in a pipe, it is a flange clamp and a Flange Installation, the parts required by the flange clamp type vortex flowmeter include the flange, double-head studs, nuts, washers and sealing washers. Generally, the material of the sealing washers is provided as asbestos rubber panels, the flange material is A3. Flange Connection Flow Meter sealing surface type for face, table body flange for Convex design, user self-supplied pipe flange should be concave, flange standard GB9115.2-2000, GB9116.2-2000, ≤ dn200 4MPa, dn200 and above 1.6, 5MPa.
1. the flow meter can be installed indoors or outdoors to avoid high-voltage lines, rotating machinery and equipment, toxic and harmful environments, strong mechanical vibration, and other environments that endanger the safety of personal and instrumentation, and the temperature and humidity environment that does not match the traffic usage conditions. Select a safe place for easy installation, debugging, maintenance, and environment.
2. when designing the flowmeter installation location, in addition to the conditions of the straight pipe section, you should also leave enough operation space around the flowmeter, especially to leave a safe and convenient operation space for people, to facilitate installation, debugging, and repair. When the instrument is installed at high altitude, an operating platform should be created to ensure operation safety.
3. The flow meter can be installed on a horizontal, vertical, or skewed pipe. However, when measuring a liquid, the flow meter installed on the vertical or inclined pipeline must ensure the flow of the liquid from the bottom up to ensure that the pipeline is filled with liquid.
4. The pipe diameter of the installed flowmeter must be the same as that of the flowmeter. Otherwise, the diameter of the upstream and downstream pipelines where the flow meter is installed must be reduced.
5. long straight pipe sections should be left in the upstream and downstream of the flow meter. The size of the straight pipe section varies depending on the upstream and downstream pipelines. The following table (8) lists the minimum length of the straight pipe section in different pipe types upstream of the sensor.
6. The upstream flow meter should not be equipped with a regulating valve or a half-open valve to avoid affecting the accuracy and stability of the flow meter. The regulating valve or semi-open valve shall be installed outside 5 DN downstream of the flow meter. "DN" indicates the nominal diameter of the flowmeter.
7. The Straight Pipe Section of the large-diameter plug-in flowmeter must be the same as that in Table (8.
8. When the medium temperature is less than 150 ℃, the integrated circuit is integrated with the sensor. When the medium temperature is higher than 150 ℃, or the ambient temperature and humidity are relatively high, the split type should be selected. The split-type amplifier or converter is installed within 4 meters from the sensor or transmitter, which is easy to maintain and has a good environment. Use the M5 bolts to fix the three holes on the bracket on the wall or on the self-made bracket.

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