Ultrasonic Flow Meters

20+ Years Manufacturing Experience

data logger rs485 4-20mA sewage open channel flow meter

Short Description:

The DOF6000 series flowmeter consists of Flow calculator and the Ultraflow QSD 6537 sensor.

The Ultraflow QSD 6537 Sensor is used to measure water velocity, depth, and conductivity of water flowing in rivers, streams, open channels and pipes.

When used with a companion Lanry DOF6000 Calculator, flow rate and total flow can also be calculated.

The flow calculator can calculate the cross-sectional area of partially filled pipe, open channel stream or river, for stream or river, with up to 20 coordinate points describing the river’s shape of cross section. It is suitable for various applications.

Ultrasonic Doppler Principle in Quadrature Sampling Mode is utilised to measure water velocity. The 6537 Instrument transmits ultrasonic energy through its epoxy casing into the water. Suspended sediment particles, or small gas bubbles in the water reflect some of the transmitted ultrasonic energy back to the 6537 Instrument’s ultrasonic receiver instrument that processes this received signal and calculates the water velocity.


Ultrasonic Doppler Principle in Quadrature Sampling Mode is utilised to measure water velocity. The 6537 Instrument transmits ultrasonic energy through its epoxy casing into the water. Suspended sediment particles, or small gas bubbles in the water reflect some of the transmitted ultrasonic energy back to the 6537 Instrument's ultrasonic receiver instrument that processes this received signal and calculates the water velocity.

Water depth is measured with two methods. An ultrasonic depth sensor measures water depth using the ultrasonic principle from a top mounted sensor on the instrument. Depth is also measured using the pressure principle from a bottom mounted sensor in the instrument. These two sensors provide flexibility in depth measurement. Some applications, for example measuring from the side of a pipe, better suits a pressure principle, while other applications in clear open channels better suit an ultrasonic principle.

The QSD6537 Sensor has a 4 electrodes conductivity instrument (EC) included to measure the quality of the water, with four electrodes exposed to the water at the top of the instrument. Water quality is measured on an ongoing basis and this parameter can be recorded along with velocity and depth to better analyse the nature of the water in open channels and pipes.

Features

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Rechargeable battery can work up to 50 hours.

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20 coordinate points to describe cross section of the river's shape.

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One instrument can measure the velocity, depth and conductivity simultaneously.

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Velocity Range: 0.02mm/s to 12m/s bi-directional, accuracy is 1%.

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Depth Range: 0 to 10m.

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Measure velocity in both forward flow and back flow.

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Depth is measured by both the pressure sensor and ultrasonic level sensor principles.

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With borometric and pressure compensation function.

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IP68 Epoxy-sealed body design, designed under water installation.

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RS485/MODBUS output, connect to computer directly.

Specificaitons

Sensor:

Velocity Velocity range: 20mm/sec to 12 m/sec
Bidirectional velocity capability, set using configuration tools
Velocity accuracy: ±1 % measured velocity
Velocity resolution: 1 mm/s
Depth (Ultrasonic) Range: 20mm to 5000mm (5m)
Accuracy: ± 1 % measured
Resolution: 1 mm
Depth (Pressure) Range: 0mm to 10000mm (10m)
Accuracy: ± 1 % measured
Resolution: 1 mm
Temperature Range: 0°C to 60°C
Accuracy: ±0.5°C
Resolution: o.1°C
Electrical Conductivity (EC) Range: 0 to 200,000 |iS/cm, Typically ± 1 % of measurement
Resolution ±1 µS/cm
May be recorded as a 16-bit value (0 to 65,535 p.S/cm) or a 32-bit value (0 to 262,143 uS/cm)
Tilt (Accelerometer) Range: ±70° in roll and pitch axes.
Accuracy: ±1 ° for angles less than 45°
Output SDI-12: SDI-12 v1.3, Max. cable 50m
RS485: Modbus RTU, Max. cable 500m
Environmental Operating temperature: 0°C 〜+60°C water temperature
Storage temperature: -20°C 〜+60°C
IP class: IP68
Others Cable: The standard cable is 15m, the maximum option is 500m.
Sensor material: Epoxy-sealed body, Marine Grade 316 Stainless Steel Mounting Bracket
Sensor size: 135mm x 50mm x 20mm (L x W x H)
Sensor weight: 1 kg with 15m of cable

Caculator:

Type:

Portable

Power supply:

Calculator: 85-265VAC(Charging battery)

IP class:

Calculator: IP66

Operating temperature:

0°C ~+60°C

Case material:

ABS

Display:

4.5" color LCD

Output:

Pulse, 4-20mA (Flow & Depth), RS485/Modbus, Datalogger, GPRS

Size:

270Lx215Wx175H (mm)

Weight:

3 kg

Data storage:

16GB

Application:

Partially Filled Pipe: 150-6000mm; Channel: width >200mm

Installation Details

Partially Filled Pipe

Partially Filled Pipe

Partially Filled Pipe1

Pipe with Siltation on Bottom

Partially Filled Pipe2

V-notch Shape Channel

Partially Filled Pipe3

Rectangular channel

Partially Filled Pipe5

Pre-formed Two-stage Rectangular Channel

Partially Filled Pipe6

Natrual Stream

Applications

18

Power Plants

18

Irrigation & Drainage  

18

River Discharge

18

Flood Monitoring & Flood Alerts 

18

Rivers and Streams Monitoring 

18

Surface Water Monitoring

18

Industrial Outflow Monitoring  

18

Wastewater Treatment Plant 

18

Rainwater Measurement

18

Sewage Treatment

18

Hydrological Monitoring 

18

Water Supply

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