1. Introduction
The DOF6000 series Open Channel Flow Meter consists of Flow calculator and the Ultraflow QSD 6537 Sensor. The IP68 submersible 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 Instruments 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.
Features：
- 20 coordinate points to describe cross section of the river’s shape. u
- One instrument can measure the velocity, depth and conductivity simultaneously.
- Velocity Range: 0.02mm/s to 12m/s bi-directional, accuracy is 1%. u
- Depth Range: 0 to 10m.
- Measure velocity in both forward flow and back flow. u
- Depth is measured by both the pressure sensor and ultrasonic level sensor principles.
- With barometric pressure compensation function. u
- IP68 Epoxy-sealed body design, designed for under water installation.
- RS485/MODBUS output, can connect to computer directly.
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.
Thanks to its unique working principle, the Multi Sensor DOF6000 series Irrigation Flow Meter excels in many applications where traditional flow meters struggle, including:
- Partially filled pipes - Handles fluctuating non-full flow in municipal and industrial pipelines.
- Culvert - Ensures stable operation in harsh buried cross-drainage systems for highways/railways.
- Channel - Supports rectangular/trapezoidal/U-shaped types for irrigation and drainage needs.
- River and stream - Enables hydrological surveys, flood warning and ecological monitoring.
- Irrigation - Realizes precise water allocation for farmland, orchards and greenhouses.
- Environmental monitoring - Provides long-term data for impact assessments and restoration projects.
- Industrial waste - Facilitates compliant monitoring of wastewater and waste liquid.
4. Summary
The water velocity and depth measurement DOF6000-W Series Wall Mounted River Flow Meter and DOF6000-P Series Portable Partially Filled Pipe Flow Meter are versatile flow measurement solution tailored for open and semi-closed flow scenarios, combining a dedicated sensor and wall-mounted/portable calculators to meet the diverse needs of applications like partially filled pipes, culverts, channels, rivers, irrigation, industrial waste management, and environmental monitoring. Ideal for on-site deployment and long-term monitoring alike, it offers a reliable, easy-to-integrate choice for professionals seeking efficient flow measurement across varied working conditions.
Post time: Dec-24-2025