KDF1300 Ultrasonic Doppler Flowmeter

1.Introduction

The ultrasonic Doppler flowmeter is based on the Doppler effect. The probe sends out a beam of ultrasonic waves obliquely upward. The ultrasonic waves propagate in the fluid. The fluid may contain impurities such as bubbles or particles (it can be considered that the impurities in the fluid have the same speed as the water flow). When the ultrasonic waves come into contact with the impurities in the fluid, the reflected ultrasonic waves will produce a Doppler frequency shift Δf. The Doppler frequency shift Δf is proportional to the flow velocity. The flow velocity of the fluid can be measured by measuring the Doppler frequency shift Δf.

2.Technical Specifications

3.Dimensions

3.1 Product picture

3.2 Structural dimensions

4.Application

An ultrasonic Doppler flowmeter is a device used to measure water flow rates in pipes, channels, or rivers. It is primarily utilized in several key areas, including:

• Flood disaster monitoring
• Sewage discharge measurement
• Monitoring of natural rivers
• Municipal water supply and drainage systems
• Water loss and infiltration tracking
• Irrigation process control
• Estuary and tidal studies
• Fisheries and water conservancy
• Coastal erosion research
• Culvert flow monitoring
• Road drainage assessment
• Canal flow studies
• River process monitoring

5.Wiring

Power wire:

Red wire connected to the positive pole of the power supply (12V+ or 24V+);

Green wire connected to the negative pole of the power supply (12V- or 24V-);

Signal wire:

White wire connected to RS485A (T/R+);

Yellow wire connected to RS485B (T/R-);

Transparent air duct:

※Must be kept unobstructed with the atmosphere, and pay attention to protection during installation, especially when passing through the threading tube, it is necessary to protect it with tape before threading to avoid water ingress. If water ingress occurs, it may cause water depth errors and other phenomena.

The transparent air duct cannot be folded, and the bending angle cannot be ﹤90° when threading the tube.

Xi'an Kacise Optronics Co.,Ltd. is a professional manufacturer of measuring instruments , located in China xi’an City. Since 2008, Xi'an Kacise focused on the development and production of pressure, level and flow measuring instruments .

We have been specializing in manufacturing pressure, level and flow measuring instruments and related products for 10 years. Based on experienced technical and management personnel, through efforts of our entire staff, we have become a professional measuring instrument manufacturer and solution provider. And we are continuously trying to improve product quality.

Xi'an Kacise is qualified with ISO 9001-2008, GJB 9001B-2009, CE, intrinsic safety explosion-proof and isolated safety explosion-proof certificates, etc. which ensure that our products comply with international standards.

Kacise sensors have already been exported to America, Spain, Australia, Chile and 20 other countries and regions, and received many favorable feedbacks. Our overseas distributers are also increasing. We regard “reasonable prices, efficient production time and good after-sales service” as our tenet, and hope to cooperate with more customers for mutual development.

Our goal is simple: to sell the best products at the best prices, and provides industry-leading customer service. We personally get to know each of our customers, and we know how to discover the most valuable part of our business , to help others achieve their goals.