Thermal Flow Switch with High Reliability for Measure Water or Liquid Flow

Product Introduction:QFS-400 flow switchis a kind ofreal-time monitoring measurementinstrument that used for liquidflow in pipeline.It adoptsfull metal jacket, no moving parts, output continuously adjustable, compact structure. 6 LED real time display the state of flow and output. Convenient installation, suitable forvarious pipe diameters. Widely used in hydropower and other pipeline fluid flow monitoring industry.Model: QFS-400 Flow Switch
Range:1~150cm/s(water),3~300cm/s(oil)Feature:High accuracy, good stability, long working life and high reliability
Small in size,convenient installation
6 LED real time display.Dimensions :( unit: mm)
Electrical connection:
CodeColorNO.Excitation +Brown1Excitation -Blue3Relay: Normally openWhite2Relay: Normally closeGray5Relay:COMBlack4Transistor:NPNBlack4Transistor:PNPBlack4
Technical Specifications:Measuring mediadilute non-corrosive liquids(water,oil…)Measuring rangesbar1~150cm/s(water),3~300cm/s(oil)Excitation voltageVdc24±20%VDCOutput signalRelaySPDT(≤250VAC/30VDC, 3A)TransistorNPN,PNP(≤24±20%VDC,1.2A)Response times2s(1~15s)Initialize times8s(2~15s)Medium temp.ºC-20~80ºCEnvironment temp.ºC-10~+70Storagetemp.ºC-25~85ºCConsumption currentmA<90mAOverload pressureMpa10MpaEnvironment protectionIP ratingIP 67Case Material 304 SSMaterial (wetted parts) 304 SS
Installation:1. The wetted parts need to immersed in fluid.Installation in small diameter pipeline to ensure that the probe can't contact with pipe's inner wall.
2 .When the fluid can not completely fill the pipeline, products should be installed in the bottom of the pipe. (Figure 1)
3. If there may besedimentin the pipeline,please productsinstalled in the pipelineside wall,horizontal mounting(Figure 2),to avoid theair and sediment
4. Installation in a straight pipe close to bend or intersection place, the pipe length should not be less than 4 times the diameter of pipeline.