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『Installation requirements for ultrasonic flowmeter』Related information(v cone flow meter|rotary gas meter|gallon meter|gear meter|metal tube rotameter|glass tube rotameter|nutating disk meter|transit time ultrasonic flow meter|wedge flow meter|pd meters|hydraulic flow meter|ultrasonic water flow meter|water flow meter|air flow meter|magnetic water flow meter|oxygen flow meter|gas flow meter|argon flow meter|air velocity meter|gasoline flow meter|fuel flow meter|ultrasonic water meter|digital water meter|nitrogen flow meter|solid flow meter|Oxygen tank flow meter|digital water flow meter|diesel fuel flow meter|steam flow meter|02 flow meter|compressed air flow meter|oil flow meter|liquid flow meter)
1. Installation position of ultrasonic flowmeter in fire pump room
Ultrasonic flowmeter in fire pump room should be installed at the inlet and outlet pipelines. Specifically, the selection of installation location needs to follow the following rules:
1. Installation of inlet pipeline: The ultrasonic flowmeter should be installed at the outlet of the water pump. This position ensures that the flow meter measures the water flow output by the pump, accurately reflecting the working status of the pump. 2. Installation of the outlet pipeline: In the outlet pipeline, the ultrasonic flow meter should be installed at the outlet. In this way, the flow meter can measure the water flow leaving the fire pump room, which helps monitor the flow situation of the entire system. During the installation process, it is also important to pay attention to the following points to ensure measurement accuracy: 1. Avoid turbulent flow areas: flow meters should be kept away from areas that are prone to turbulence, such as valves, bends, and pumps. The unstable water flow in these areas can affect the measurement accuracy of the flow meter. Therefore, it is recommended that the length of the upstream straight pipe section be no less than 10 times the pipe diameter, and the length of the downstream straight pipe section be no less than 5 times the pipe diameter (if the pipeline is cumbersome, it needs to be appropriately extended).
2. Avoid installing high or low points: Flow meters should not be installed at high or low points of the pipeline (prone to gas accumulation). Accumulation of gas or liquid can affect the measurement of the flowmeter, resulting in inaccurate data. Following the above installation principles can ens
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2. What is the installation and positioning distance of the sensor for the ultrasonic flowmeter?
The installation and positioning distance of the sensor for the ultrasonic flowmeter needs to be determined based on the flowmeter type, pipeline parameters, and upstream and downstream pipe conditions. The core is divided into two categories: the requirements for the upstream and downstream straight pipe sections and the installation distance of the sensor itself. The reference requirements for mainstream types are as follows.
.1. Clamp on ultrasonic flowmeter (external universal type) 1 Requirements for upstream and downstream straight pipe sections: Under standard non turbulent flow conditions, the upstream straight pipe section should be ≥ 10 times the inner diameter of the pipeline (10D), and the downstream straight pipe section should be ≥ 5D. If there are turbulence components such as elbows, valves, pumps, etc. upstream, the upstream straight pipe section should be raised to 15D~20D, and the downstream should be maintained at ≥ 5D. If a rectifier is installed inside the pipeline, the upstream and downstream straight pipe sections can be shortened to within 5D. 2. The installation spacing of the sensor itself is divided into three installation methods: Z-type (direct penetration), V-type (one-time reflection), and W-type (two reflections). The conventional incidence angle value is 30 °~45 °, and the sensor spacing needs to match the pipe diameter and incidence angle. Taking DN100 pipeline as an example, the V-type