QFS-400 flow switch is a kind of real-time monitoring measurement instrument that used for liquid flow in pipeline .It adopts full metal jacket, no moving parts, output continuously adjustable, compact structure. 6 LED real time display the state of flow and output. Convenient installation, suitable for various pipe diameters. Widely used in hydropower and other pipeline fluid flow monitoring industry.
Model: QFS-400 Flow Switch
High accuracy, good stability, long working life and high reliability
Small in size，convenient installation
6 LED real time display.
Dimensions :( unit: mm)
Relay: Normally open
Relay: Normally close
dilute non-corrosive liquids(water,oil…)
Material (wetted parts)
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 be sediment in the pipeline, please products installed in the pipeline side wall, horizontal mounting (Figure 2), to avoid the air 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.
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