Flowmeters
TL-OC Series (MQ6000)
Ultrasonic Open Channel Flow Meter
Non-contact open channel flow measurement with remote monitoring capability
Key Features
- Non-contact measurement — no fluid contact
- No corrosion or pollution from sewage
- Remote monitoring via DCS, PLC, 4G, LoRa
- Built-in digital memory — data retained on power loss
- Supports weir, flume, and channel configurations
Product Overview
The TL-OC Series Ultrasonic Open Channel Flow Meter provides non-contact flow measurement for open channels, weirs, and flumes. The sensor measures water level via ultrasonic pulse reflection, and the controller calculates flow rate using standard hydraulic formulas. Remote monitoring via DCS, PLC, or cloud platform is supported. Built-in digital memory ensures data integrity during power failure.
Technical Specifications
| Measuring Range | 0 ~ 9,999,999 m³ (thousand cubic meters) |
| Measuring Accuracy | ±2% (Doppler), ±1% (time difference) |
| Water Depth Range | 0 ~ 200m (sensor dependent) |
| Water Depth Accuracy | ±0.1mm |
| Signal Output | 4–20mA, RS485 Modbus, 4G, LoRa, NB-IoT, GPS, LAN |
| Relay Output | Four-way NPN / four-way relay (AC:5A 250V, DC:10A 24V) |
| Storage | TF card (32G), USB |
| Power Supply | 3.7 ~ 28VDC, 220VAC |
| Battery Supply | 12V/30Ah, 12V/60Ah, 12V/90Ah |
| Material | ABS, Stainless steel 304 |
| Protection Level | IP60, IP68 |
| Controller Dimensions | 191mm × 170mm |
* Specifications are subject to change without notice. Contact us for the latest datasheet.
Features & Highlights
Non-contact measurement — no fluid contact
No corrosion or pollution from sewage
Remote monitoring via DCS, PLC, 4G, LoRa
Built-in digital memory — data retained on power loss
Supports weir, flume, and channel configurations
IP68 sensor for permanent outdoor installation
Battery backup option for off-grid sites
Typical Applications
Municipal wastewater treatment plantsIrrigation canals and agricultural waterRiver and stream flow monitoringStormwater managementIndustrial effluent discharge monitoringEnvironmental compliance and reporting
Need more technical information?
Our engineers can provide datasheets, installation guidance, and application support.