Open Channel Flow Meters

Open channel flow meters use an old, reliable technique for measuring water flow rates in channels, streams, and stormwater systems. It is also used in wastewater processing for monitoring effluent discharge. Weirs or flumes concentrate the flow into a known cross-sectional area. The height of the water in the channel, going over the weir or flume, is directly proportional to the flow rate.

No Contact Ultrasonic Level Sensor | 2270

No Contact Ultrasonic Level Sensor - Overview

The type 2270 is a rugged, high-performance ultrasonic level measurement sensor, having transducer and processing electronics incorporated in one single housing. It provides sophisticated echo detection features. Suitable for single and multiple tank applications. 2-wire sensors are recommended using either HART protocol or 4 to 20 mA for direct communication with a panel mount controller or a PLC. Applications include liquid level measurement in sumps or tanks or open channel flow measurement. Sensing ranges up to 8 m are available. PP and PVDF sensor bodies provide the best chemical resistance in applications where concentrated chemicals can be detected.

No Contact Ultrasonic Level Sensor - Features

2 wire compact sensor
Non-contact level measuring
Narrow 5° beam angle
Level, volume and open channel flow
Compact housing
32 points of linearisation
Fully temperature compensated electronics
Outstanding signal processing software - highly accurate
PP or PVDF sensor body provides best chemical resistance
Secondary lightning protection
4 to 20 mA / HART interface

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Open Channel Flow Meter | RWPLCM

Open Channel Flow Meter - Overview

The Open Channel Flow Meter is an economical solution for open channel measuring. It measures level, flow rate and total volume of water flowing through weirs and flumes. The meter includes a non-contact ultrasonic level sensor to detect the water level which then calculates the flow rate and volume using the Manning equation and channel characteristics. Economical and reliable. The accuracy of change in level is 1mm. Suitable for a variety of weirs and flumes, Parshall flumes (ISO), V-Notch weirs, Rectangular weirs (With or Without End Contractions) and custom Formula-type weirs. The meter displays flow rate in L/S, M3/h or M3/min. It has a clear display with a backlit graphical LCD. The cable length between the probe and host is up to 1000m. The probe has a leak-proof structure and IP68 protection grade. It is chemically resistant for maximum application flexibility. Communications include a 4-20mA output and RS485 serial communication (MODBUS-RTU) output. It has 6 programmable relays for alarms. There are three buttons for programming or it can be remotely controlled for easy configuration and operation. The Open Channel Flow Meter is well suited for applications ranging from flow for water treatment plants, storm and sanitary sewer systems, effluent from water resource recovery, to industrial discharge and irrigation channels.

Open Channel Flow Meter - Features

Power Supply: DC24V (±5%) 0.2A; AC220V (±20%) 0.1A ;Optional DC12V
Display: Backlit LCD
Flow Rate Range: 0.0000~99999L/S or m3/h
The maximum of Accumulative Flow: 9999999.9 m3/h
Accuracy of Change in Level: 1mm or 0.2% of full span (whichever is greater)