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Question:

Is the water flow in the cold water pipe influencing the set point of the flow switch?

Is the water flow in the cold water pipe influencing the set point of the flow switch?

Answer:

Professional fire flow switch using the target flow switch more. The flow switch is used to detect the size of the pipe medium flow meter. In the pipeline flow is higher or lower than a certain set point when issued, the control system to obtain the signal can be made after the corresponding instructions. Fire water tank is fire fighting and rescue activities for the fire brigade to provide water fire facilities. On the one hand, the fire water supply pipe filled with water, save the fire pump after the opening of the pipeline filled the time for the fire to win the time. On the other hand, the roof of the pressurization system, the regulator system and the water tank to ensure that the fire water gun to enrich the water column, the initial success of the fire to play a decisive role.
May 9, 2017
National standard GB 50974-2014 "fire water supply and fire hydrant system technical specifications" 11.0.4 provides: fire pump should be pump water pipe on the set of pressure switch, high fire water tank outlet pipe on the flow switch, or alarm valve pressure switch Signal directly to start the fire pump. Fire water pump room pressure switch should be introduced into the control cabinet. That is, the fire tank installed on the outlet pipe flow switch, is the statutory mandatory requirements.
May 9, 2017
Flow switch has a variety of structures, forms and working principle. Common professional fire flow switch more use of the target structure principle. That is, in the pipeline into an object can impede the flow of water (target), when the water in the pipeline, the water flow to promote the target movement, trigger circuit switch action, issued water flow information. Target flow switch is characterized by simple structure, reliable operation, low cost, no power supply, the disadvantage is to determine the pipeline flow set point when the accuracy is low (fire on this requirement is not high) Therefore, the professional fire flow switch using the target Type flow switch more.
May 9, 2017

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