『Installation picture of fire flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. Installation method of fire flowmeter: Where is the most reasonable location for installing fire surface flowmeter? Firstly, it must be installed on a flat surface to obtain the most accurate readings. Secondly, it must comply with the design specifications. Electronic remote flow meters can be installed in concealed locations, while ordinary flow meters and those used for visual reading must be installed in a clearly visible and upright position. 2. Radar open channel flowmeter
3. How to wire the ultrasonic flowmeter for fire pipes
The wiring of the ultrasonic flowmeter for fire pipes should be connected to the corresponding terminals of the host according to the upstream and downstream sensors: the upstream probe should be connected to the 5th and 6th terminals in the lower row of the host from left to right, and the downstream probe should be connected to the 2nd and 3rd terminals;
; The power supply can be selected as AC220V or DC24V, and the power supply should be connected according to the label; 4-20mA output connected to "OUT+" and "OUT -"; RS485 communication connects "A" and "B"; If equipped with heat distribution function, the water supply temperature sensor should be connected to TX1. T
1. GND, and the return water should be connected to TX
2. T
2. GND (shared by GND); Relay switch quantity is connected to RELAY+and RELAY -. Before wiring, be sure to disconnect the power and confirm that the host model matches the sensor to avoid reverse connection or misalignment. When installing with external clamps, it is necessary to polish and remove rust on the surface of the pipeline, and apply coupling agent to ensure good sound wave transmission; For plug-in t
4. Can fire flow meters be installed vertically? All environments on site meet the requirements and can be installed vertically. Taking the use of electromagnetic flow meters in on-site firefighting as an example: Selection of installation location for electromagnetic flow meters
(1) When there are bends, valves, and pumps upstream and downstream of the installation location of electromagnetic flow meters, the fluid forms a transverse secondary flow in the pipeline, and the velocity distribution deviates. When the length of the straight pipe section is insufficient, the measurement accuracy decreases. In general, the length of the upstream straight pipe section is not less than 10D, and the length of the downstream straight pipe section is not less than 5D. However, when there are pumps and other equipment upstream, the length of the straight pipe section must not be less than 30D. Do not install instruments on the inlet side of the pump, as this will cause pipeline vacuum and measurement errors. Where D is the inner diameter of the pipeline. Changyou
(2) During measurement, it is necessary to ensure that the pipeline is filled with liquid, otherwise it will affect the measurement accuracy. When installing at an angle or vertically, the measured liquid should flow rapidly from bottom to top. The measured liquid should not contain too many
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