Open Channel Ultrasonic Flow Meter
An Open Channel Ultrasonic Flow Meter is a highly advanced and non-contact type flow measurement instrument used to accurately measure the flow of liquids flowing in open channels such as canals, rivers, wastewater channels, culverts, treatment plants, irrigation channels, flumes, weirs, and stormwater drains. Unlike closed-pipe flow meters, an open channel meter measures the flow by calculating the level of the liquid and converting it to flow rate using standardized hydraulic equations.
Saitechflow, Pune India, is one of the leading manufacturers & suppliers of Open Channel Ultrasonic Flow Meters designed to deliver long-term reliability, high accuracy, and stable performance even in harsh outdoor conditions. With years of experience in flow measurement technology, Saitechflow offers robust and industry-grade solutions for municipal, industrial, and environmental applications.
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What is an Open Channel Ultrasonic Flow Meter?
An Open Channel Ultrasonic Flow Meter works on the non-contact ultrasonic principle. A sensor is installed above the flowing liquid and emits ultrasonic sound waves. These waves hit the liquid surface and reflect back to the sensor. By calculating the time taken for the signal to return and the height of the liquid, the system determines the flow rate based on channel geometry, weir or flume type.
It is ideal for:
- Wastewater Treatment Plants (STP & ETP)
- Irrigation & Canal Water Distribution
- River and Stream Monitoring
- Municipal Sewer Measurement
- Dam & Reservoir Discharge
- Industrial Effluent Monitoring
- Stormwater Drainage Flow Monitoring
Because the sensor does not touch the liquid, it ensures no corrosion, no maintenance, and long device life.
Saitechflow – Leading Manufacturer & Supplier in Pune, India
Saitechflow specializes in manufacturing highly reliable and durable Open Channel Ultrasonic Flow Meters customized according to Indian industrial and municipal requirements. Our meters are designed for long-term field use and deliver precise performance under varying environmental conditions.
Why Saitechflow is a Trusted Supplier:
- Expert in industrial/municipal flow measurement
- Custom solutions for weirs, flumes, and open channels
- Rugged weatherproof enclosures (IP65/IP68)
- Accurate and repeatable measurement even in outdoor environments
- India-made products with reasonable pricing
- Fast service & support across India
Working Principle of Open Channel Ultrasonic Flow Meter
Open Channel Flow Meters by Saitechflow operate on the following principles:
- Ultrasonic Level Measurement
The ultrasonic sensor emits short ultrasonic pulses towards the liquid surface. These pulses reflect back, and the time difference is measured (Time of Flight principle).
- Level to Flow Conversion
Once the liquid level is determined, flow rate is calculated using:
- Weir Formula
- Flume Calibration Curve
- Channel Geometry Database
Saitechflow meters support all industry-standard structures such as:
- V-Notch Weir
- Rectangular Weir
- Trapezoidal (Cipolletti) Weir
- Parshall Flume (various throat sizes)
- Palmer-Bowlus Flume
- Digital Processing
Advanced microprocessors convert the level data into:
- Instantaneous flow rate (m³/hr or LPS)
- Total cumulative flow
- Level trends
- Alarms & diagnostics
- Output Options
Meter supports:
- 4–20 mA Output
- RS485 / MODBUS
- Relay Outputs
- Data Logger / USB Extraction
Key Features of Saitechflow – Open Channel Ultrasonic Flow Meter
- Non-Contact Measurement
Since the sensor is not in contact with the liquid, there is:
- No wear & tear
- No corrosion
- Zero contamination
- Minimum maintenance
- Ideal for Dirty, Sewage, and Wastewater
Suitable for ETP, STP, sludgy water, sewage drains, and industrial effluents where standard flow meters cannot work.
- High Accuracy
Accuracy typically ranges from ±0.5% to ±1%, depending on channel structure and flow conditions.
- Rugged and Weatherproof
Sensors are:
- IP68 waterproof
- UV-resistant
- Designed for outdoor installation in harsh climates
- Large Display & User-Friendly Interface
Meters come with:
- High-contrast LCD/LED display
- Easy setup
- Multi-parameter view (FLOW + LEVEL)
- Built-In Totalizer
Keeps track of cumulative flow—essential for water audit and compliance reporting.
- Compatibility with Many Channel Structures
Supports:
- Weirs
- Flumes
- Custom channels
- Data Logging & Cloud Options
Optional models allow:
- Data storage for months
- Wireless communication
- Integration with SCADA or IoT monitoring systems
Technical Specifications
Below are the standard technical features offered in Saitechflow meters:
Parameter | Specification |
Measurement Principle | Ultrasonic (Non-contact) |
Accuracy | ±0.5% to ±1% |
Level Range | Up to 5m / 10m (model dependent) |
Output | 4–20mA / RS485 MODBUS |
Power Supply | 24V DC / 230V AC |
Display | LCD with backlight |
Sensor Enclosure | IP68 |
Transmitter Box | IP65 / IP67 |
Data Logging | Optional |
Temperature Range | –20°C to +60°C |
Mounting | Channel top mounting |
Applications
Saitechflow Open Channel Ultrasonic Flow Meters are used across a wide range of industries and government sectors.
- Wastewater Treatment Plants (STP & ETP)
- Influent and effluent monitoring
- Compliance with Pollution Control Board norms
- Sewage flow measurement
- Irrigation & Canal Systems
- Water distribution management
- Canal gate monitoring
- Rural irrigation flow auditing
- Industrial Wastewater Monitoring
- Food & beverage
- Chemical plants
- Sugar industries
- Pharmaceutical factories
- River and Stream Monitoring
- Natural water bodies
- Environmental research
- Flood monitoring
- Municipal Drainage Systems
- Stormwater flow measurement
- Sewerage network monitoring
- Dams & Reservoirs
- Discharge monitoring
- Overflow measurement
Advantages of Saitechflow Open Channel Ultrasonic Flow Meter
- Maintenance-Free
Since there are no moving or submerged parts, the meter does not require regular cleaning or servicing.
- Extremely Durable
Designed for Indian environmental and industrial conditions.
- Suitable for All Open Water Systems
Works for clean water, dirty water, sludge, sewage, industrial effluent, etc.
- Easy Installation
Simple mounting without pipe cutting or complex civil work.
- Cost-Effective
Compared to mechanical flow measurement systems, ultrasonic open channel meters are economical and long-lasting.
Why Choose Saitechflow?
- Indian Manufacturer → Better support, faster delivery
- Custom calibration for weirs & flumes
- Competitive pricing
- Rugged long-life industrial design
- Trusted by municipal corporations, industries & contractors
Saitechflow has supplied meters across Maharashtra, India including:
- Pune
- Mumbai
- Nashik
- Nagpur
- Aurangabad
- Gujarat
- Karnataka
- Telangana
- Rajasthan
- Tamil Nadu
Installation & Commissioning
Our engineering team provides:
- On-site installation guidance
- Calibration support
- SCADA or cloud integration
- Long-term AMC if required
Simple Top-Mount Installation:
- Mount the ultrasonic sensor on top of the channel.
- Connect the sensor to the transmitter.
- Select the weir/flume type in the menu.
- Set calibration parameters.
- Start measuring flow.
Industries Served
- Water supply & wastewater
- Irrigation & agriculture
- Power plants
- Chemical & pharmaceuticals
- Food industries
- Government water resource departments
- Civil contractors
- Pollution control boards
Conclusion
Saitechflow is one of the top manufacturers & suppliers of Open Channel Ultrasonic Flow Meters in Pune, India, offering high-accuracy, durable, and non-contact flow measurement solutions. Whether you need to monitor industrial effluent, irrigation water, canal discharge, or wastewater treatment, Saitechflow provides dependable, long-life, and cost-effective instruments tailored for Indian conditions.
Our open channel flow meters ensure:
- Accurate readings
- Zero maintenance
- Long service life
- Superior performance in tough environments
For industries, municipalities, contractors, and consultants looking for reliable open channel flow measurement solutions, Saitechflow is the trusted partner.
