Products Description
Open channel sewage flow meter is an instrument that calculates sewage flow rate by measuring the water level inside the open channel. It mainly consists of ultrasonic probes or radar probes and converters. Suitable for environmental protection, water management, channels and other fields, it can be used in places such as sewage treatment plants and urban drainage systems. It has the characteristics of simplicity, reliability, and accuracy, and can monitor and record flow data in real time, providing important references for engineering design and operation management.
The on-site calibration and calibration of this instrument are also very simple during installation. After the first installation, maintenance, and movement of the probe on site, the calibration of the flow meter is completed according to the "height setting" step. If there is a deviation in the flow rate, the "liquid level setting" menu can be used for calibration. The purpose of calibrating the liquid level is to ensure that the liquid level value measured by the instrument is consistent with the actual water level in the measuring weir groove. The best way to calibrate the liquid level is to ensure that the water level inside the measuring weir tank is exactly zero, and the liquid level displayed on the calibration instrument is also zero. In practice, it is not easy for the measuring weir to stop water. In this case, only the liquid level indication of the calibration instrument can be equal to the measured water level value of the measuring weir tank.
Warranty period: Our company's product warranty period is within twelve months from the date of acceptance.
The following situations are not covered by the free warranty:
The product or its components have exceeded the free warranty period.
Hardware failures caused by usage environments that do not meet product requirements.
Malfunctions or damages caused by poor power environment or foreign objects entering the equipment.
Malfunction caused by failure to follow the instructions and precautions written in the user manual.
Malfunctions caused by uncontrollable natural factors such as lightning, water and fire disasters.
Malfunctions or damages caused by unauthorized disassembly, repair, unauthorized modification, or abuse.
Our company reserves all rights worldwide. Without prior written permission from our company, no part of this instrument, including the source code, may be copied, transmitted, transcribed, or translated into any language or computer language in any form or by any means, electronic, electromagnetic, optical, artificial, or otherwise.
Without prior written permission from our company, all or part of this manual may not be copied, photocopied, reproduced, translated, or transmitted to any electronic or machine-readable media.
The name and logo displayed on this product are registered trademarks or trademarks of our company. All other trademarks, trade names, or company names referenced here are for identification purposes only and are the property of their respective owners.
Technical Parameters
| Measurement range | 0.01L/s-10m³/s | Analog output | 4-20mA (output content: flow or liquid level) |
| Accumulated traffic | 999999999999m³ | Digital output | RS485 (Modbus. rtu protocol) |
| Distance measurement range | 0.35-3m (blind spot 0.35-0.5m) | Power supply voltage | AC power supply: AC220V; |
| Distance measurement accuracy | ± 3mm (flow accuracy of 1% depends on the type of weir plate) | DC power supply | DC12V, DC24V (customizable wide power supply mode) |
| Flow accuracy | ± 5% (1% to 3% of the uncertainty in the amount of water used in the weir groove, with an additional instrument measurement error of 1% to 2%) | Environmental temperature | Main unit: -5 ℃~45 ℃; |
| Distance measurement resolution | 1mm | Sensor section | -30 ℃ to 40 ℃ |
| Pressure | atmospheric pressure | Protection level | Host part: IP66 (pay attention to tightening the lower electrical interface to prevent dust and moisture); |
| Instrument display | Equipped with LCD display for instantaneous and cumulative flow rate, in months, days, hours, minutes, and seconds | Sensor part | IP67 (fully sealed sensor IP68) |
| Clock error | <0.05% (calibrated when larger) |
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