External clamp ultrasonic flowmeter - turbine flowmeter

1External ultrasonic flowmeterProduct FeaturesExternal clamp type ultrasonic flowmeter
1. 0.5% linearity, 0.2% repeatability for non-conductive/special medium measurements
2. Bilingual windowing operation in Chinese and English, positive/negative/net accumulator
3. Anti interference design, normal operation of frequency converter environment with RS-232 interface, and complete communication/networking protocol
4. Built in heat measurement/calorimeter with built-in batch/quantitative controller
4. 2 channels of 12 bit precision analog 4-20mA input and 1 channel of programmable analog 4-20mA output
5. Two programmable switch outputs can be used as a complete remote terminal for flow/heat RTU
6. Built in daily, monthly, and yearly data accumulator with built-in power on/off recorder
7. Built in data recording with optional DC/AC/220V AC power supply
8. Can choose commonly used domestic and foreign flow unit frequency signal output

IIExternal ultrasonic flowmeterMeasuring principleExternal clamp type ultrasonic flowmeter
When ultrasonic waves propagate in liquid, the ultrasonic pulses emitted by probe 1 are received by probe 2. At the same time, probe 2 also emits ultrasonic pulses, which are received by probe 1. As a result, the propagation speed of sound waves in the downstream direction increases, while in the upstream direction it decreases. The same propagation distance has different propagation times. By using the relationship between the difference in propagation time and the measured flow rate, the flow rate can be obtained.

3、 Working principle of external ultrasonic flowmeter
When an ultrasonic beam propagates in a liquid, the flow of the liquid will cause a slight change in propagation time, and the change in propagation time is proportional to the flow velocity of the liquid, which follows the following expression. Among them
θ is the angle between the sound beam and the direction of liquid flow
M is the number of straight line propagation times of the sound beam in the liquid
D is the pipeline Δ T=Tup – Tdown
Tup is the propagation time of the sound beam in the positive direction, Tdown is the propagation time of the sound beam in the negative direction

4、 Typical use:
1. Water, sewage, seawater 8 Ship operation and maintenance
2. Water supply and drainage 9 Energy saving monitoring and water-saving management
3. Power plants for nuclear, thermal, and hydro power Paper and pulp making
4. Heating, Heating, Heating 11 leak detection
5. Metallurgy and Mining 12 Traffic inspection, traffic tracking, and collection
6. Petroleum and Chemical Industry 13 Thermal measurement, thermal balance
7. Food and Medicine 14 Flow, heat management, monitoring network system