Flow

Overview

Open-channel ultrasonic flow meter is a most commonly used device of measuring flow rate in an open channel. Flow in an open channel is measured by inserting a hydraulic structure into the channel, and there are 2 types of hydraulic structure: flumes and weirs.

Using ultrasonic level technology, open channel ultrasonic flow meters include a non-contacting transducer mounted above the flume or weir. By measuring the time from transmission of an ultrasonic signal to receipt of an echo, the water level is accurately measured.

Features

• Non-contact measurement
• Internally integrated temperature sensor to perform temperature compensation on the speed of sound in real time
• Automatically detect on-site electrical interference and perform interference suppression
• With data storage function, the data storage time can reach 8 years
• Display instantaneous flow, cumulative flow, liquid level, echo waveform, historical curve,etc
• All wires with overvoltage and overcurrent protection

Specifications

1. Measuring Range: 0.1 x10^-3～120000 m³/s
2. Cumulative Flow: 99999999m³
3. Blind Area：0.25m～0.5m
4. Distance precision: 0.3%（standard condition）
5. Distance resolution: 1mm
6. Flow precision: 1%～5%（subject to the type of weir plate）
7. Pressure: Less than 4 atmosphere pressure
8. Display: LCD displays the instantaneous flow and cumulative flow
9. Analog Output: 4～20mA
10. Digital Output: RS485、Modbus agreement or customized agreement
11. Power Voltage: DC24V/AC220V，built-in lightning proof device
12. Ambient Temperature: －20℃ ～ ＋60℃
13. Protection Grade: IP65
14. Installation: Remote & Integral
15. Transducer Material: Water-proof ABS/ETFE/PTFE
16. Transducer Installation: Screw, flange, bracket
17. Flume and weir type:  Parshall flume,Triangular Weir, Rectangular Weir