Thermo Flow Switch for water

Thermo Flow Switch for water

1.As one of the most professional water
2.and oil for thermo flow switch manufacturers and suppliers in China,
3.we're featured by customized and OEM services.
4.Please rest assured to buy Water And Oil For Thermo Flow Switch at competitive price from our factory.
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Product Details

Water and Oil for thermo Flow Switch


QLK400 is a flow transmitter with switch which could do real-time monitoring of liquid in the pipeline and it shall show the flow condition by several LED displayers. It can monitors following conditions:
Flow speed increasing or reducing, medium exists or not, the medium is moving or not.
It is used to protect idling pump and monitor the flow rate in the pipeline.

Main Features

1.All stainless-steel case without movable components
3.Switching point could be set on site
4.LED displayer shows flow state and on-off state

Quick Details

  • Place of Origin: Shaanxi, China

  • Model Number: QLK400

  • Max. Current: 90mA DC

  • Max. Voltage: 30

  • Max. Working Pressure: 10MPa

  • Media Type: Liquid

  • Flow Rate: 1~150CM/S

  • Material: Stainless Steel

  • Range: 1~150cm/s(water) 1~300cm/s(oil)

  • Type: electric appliance /PNP/NPN

  • Response time: 2s

  • Protection grade: IP67

  • Medium tempreature: -20-80℃

  • Operating tempreature: -30-80℃

  • Single gross weight: 1KG

 Specification of QLK400 Thermal Flow Meter
Measuring Range1~150cm/s(water), 3~300cm/s(oil)
Power Supply24 ± 20% VDC
Operating Temperature-30°C~80°C
Medium Temperature-20°C~80°C
Overload Capacity10MPa
Protection LevelIP67
Measuring MediumFluid, Water, Oil, Petrolum
Switch TypeRelay, PNP, NPN
Response time2s
Consumption Current<90mA DC

Model Selection


                                  Selection Guide of QLK400 Thermal Flow Meter
 Switch Type JRelay (SPDT)
  Deepth of PinL115mm

QLK400 product image1

QLK400  0


Shaanxi Miracle Measure and Control Co., Ltd was founded in 2007, is located in Baoji, Shaanxi Province,China.

As a well-known manufacturer, Miracle specializes in High-tech R&D, focuses on self-developing, manufacturing and selling of measurement and control products for pressure, temperature, liquid level and flow.
Shaanxi Miracle can offer an extensive variety of the highest quality pressure transmitter as well as digital pressure gauge and level transmitter and temperature transmitter. Recognized for their accuracy and long-term reliability, our products are the sensor of choice for diverse markets such as hydroelectricity, public waterworks, chemical engineering,mechanical engineering, petroleum industry, Industrial Controls, Medical industry and Food Handling.

With the implementation of ISO9001, CMC (China Metrology Certification), EX(Explosion-proof certification),our company has adopted programs to ensure compliance with the necessary directives for quality control and product safety.
At present, our products have been accepted and exported to Europe, America, Southeast Asia, Africa and other regions all over the world. Based on the purpose of satisfying customers, we keep improving our product development capability and processing technic to offer a better product.

We sincerely hope that we can be one of your dependable and trust-able cooperators!

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