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Hanzhong Quan Yuan Electronic Co., Ltd.

Flow Sensor for Water Oil, Relay Switch, Flow Switch manufacturer / supplier in China, offering Relay Output Flow Switch, Single Point Mini Load Cells (QL-55) with Connector, LED Display Digital Pressure Transmitter and so on.

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Relay Output Flow Switch

FOB Price: US $80 / Piece
Min. Order: 5 Pieces
Min. Order FOB Price
5 Pieces US $80/ Piece
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Port: Xian, China
Production Capacity: 1000000
Payment Terms: T/T, Western Union, Paypal

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Basic Info
  • Model NO.: QFS-400
  • Type: Digital Display
  • Display: Pointer
  • Structure: Relay Output Flow Switch
  • Function: Electric Signal-controlled
  • Features of Measurement Medium: Explosion Proof
  • Measurement Range -15~1000psi: Accuracy ±0.25% ±0.3%±0.5%
  • Transport Package: Carton
  • Origin: Hanzhong
  • Measuring Range: 1~150cm/S(Water),3~300cm/S(Oil)
  • Accuracy: 0.5
  • Application: Industrial
  • Connection Type: Thread
  • Installation Structure: Direct Mounting
  • Indicating Pressure Reference: General Pressure Gauge
  • Trademark: QYE
  • Specification: High-precision
  • HS Code: 9026201090
Product Description
Product Description

  Relay output Flow switch/ flow sensor for water oil

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




Relay Output Flow SwitchRelay Output Flow Switch

Technical Specifications:
Measuring mediadilute non-corrosive liquids(water,oil…)
Measuring rangesbar1~150cm/s(water),3~300cm/s(oil)
Excitation voltageVdc24±20%VDC
Output signalRelaySPDT(250VAC/30VDC, 3A)
Response times2s(1~15s)
Initialize times8s(2~15s)
Medium temp.ºC-20~80ºC
Environment temp.ºC-10~+70
Storage temp.ºC-25~85ºC
Consumption currentmA<90mA
Overload pressureMpa10Mpa
Environment protectionIP ratingIP 67
Case Material                304 SS
Material (wetted parts)                304 SS
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.
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.

Packaging & Shipping

All products can be shipped by International Express including EMS,UPS,FedEx,DHL and TNTas you required. By plane or by ship is available, too. The detailed can be discussed with our sales.We will choose the safe and cheapest way for you to reduce your cost. 


All products will be well packed in hard paper box properly and security. Packing list will be enclosed inside the box. Please take care of this when you unpack the package.


Our Services


1. OEM/ODM Services:

Our company provides OEM/ODM services and Customized products services. 

With know-how technique and mass production capability, we are able to provide the specified sensing solution according to customer's application. 

What's your requirement? 

2. Quality Quarantee

We quarantee product quality for one-year starting from the date of delivery. 


Company Information

  Marketing under Our Brand "QYE"
Hanzhong Quan Yuan Electronic Co. Ltd is a professional high-tech enterprise that is committed to the research, development, design, manufacture and sale of load cells, high precision resistance strain gauges and pressure transmitters under the QuanYuan brand. They can be applied in the traditional force measurement field and are also widely used in the industrial automation production lines and metallurgical industry.

Meeting CE, RoHS and EX Requirements
As an ISO 9001:2008-certified company,all our electronic products have good performance and high quality because all products must be tested several times and they must undergo strict inspections before being dispatched from the factory. As a result, our load cells have passed CE and RoHS requirements and pressure transmitters have passed CE and EX standards.

Service Concept: Customer Satisfaction is Our Everlasting Pursuit
With several years' experience in manufacturing and selling load cells, strain gauges and pressure transmitters, we always adhere to our service concept of "customer satisfaction is our everlasting pursuit" and have built a professional team in sensor field to provide customers with first-class products, first-class services, first-class reputation and first-class principles.

Exporting to over 30 Countries Worldwide
With high quality and good service, our products have been exported to over 30 countries, which include the US as well as those in Europe, Southeast Asia, the Middle East and South America.


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Ms. Yu Chen
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