Box Culvert Open-Channel Flow Meter

It can be widely used for flow measurement, including flow rate, water level, instantaneous flow, and cumulative flow measurement in applications such as sewage treatment inflow and outflow channels, chemical liquid pipelines in industrial and mining enterprises, wastewater discharge channels, hydraulic engineering projects, agricultural irrigation channels, and flood discharge gates.

Classification:

Time-difference flow measurement

Keyword:

箱涵式超声波流量计

超声波流量计

超声波明渠流量计

时差法超声波流量计

QR code:

Message

Product details

Instrument Overview

The ultrasonic open-channel flowmeter measures the ultrasonic wave transmission time using a high-precision time-to-digital conversion chip, effectively overcoming issues such as zero-drift and large measurement errors at low flow rates. It comprehensively integrates the frequency difference method and the time difference method, employing real-time sound speed and temperature compensation technologies to accurately compensate for flow rate variations. The human-machine interface features a rich graphical display and supports multiple communication protocols. This flowmeter boasts advantages including high measurement accuracy, simple operation, and stable performance.

Performance Features

1. Supports multi-channel measurement, effectively enhancing the instrument’s accuracy and reliability in complex fluid conditions.

2. It comprehensively employs both frequency-difference and time-difference measurement techniques, with automatic sound velocity compensation, effectively avoiding zero-point drift and enhancing the accuracy of small-flow measurements.

3. Supports RS485 communication, making integration with remote data management systems even more convenient.

4. Supports input methods such as AC 220V, DC 14V, and solar power;

5. When the cross-section of the flow is large, use multi-channel velocity measurement to achieve high-precision measurements.

6. No flow obstruction, no head loss.

7. Use an ultrasonic level gauge to avoid the frequent freezing and inaccurate data readings that can occur with conventional pressure sensors in low-temperature conditions, thereby enhancing system stability.

Feature Introduction

1. The side-flow chamber is equipped with at least four (inclusive) ultrasonic flow velocity sensors.

2. Comes with an ultrasonic level meter; a pressure-type level meter is also available. The 485 input can be connected to the host device.

3. Implement output of flow velocity, water level, instantaneous flow rate, and cumulative flow rate.

Technical Parameters

(1) Host Parameters
1. Host display	OLED LCD display, keyboard input
2. Power supply	DC12V
3. Display data	Water level, flow velocity, instantaneous flow rate, cumulative flow rate
4. Output interface	RS485
5. Protection Level	IP65
6. Installation method	Wall-mounted
7. Host Interface	Provides an external level gauge interface.
(2) Time-Difference Method Ultrasonic Sensor
1. Measurement Principle	Time-difference continuous measurement
2. Measure the audio channel	The multiplier increases starting from 4 channels; choose 8 channels, 16 channels, 20 channels, 24 channels, and so on.
3. Speed measurement accuracy	1%
4. Flow Rate Range	±12 m/s
5. Beam frequency	1MHz
6. Maximum sampling rate	1Hz
7. Box culvert dimensions (W*H)	Standard sizes: 400×400 mm, 600×600 mm, 800×800 mm, 1000×1000 mm, 1200×1200 mm
8. Sensor protection rating	IP68
(3) Ultrasonic Water Level Sensor
1. Water level range	0-5m
2. Water level accuracy	0.5%
(4) Flow Parameters
1. Flow error	±2.5%
2. Flow conditions	Supports full-tube or non-full-tube operation.
(5) Other parameters
1. Output method	RS485 Standard Modbus Protocol
2. Operating temperature	-20℃ to 70℃