713 open channel flow meter

MJK 713 does Open Channel Flow Measurement and registration of water flow. The converter is adaptable to many types of weirs and open channels.

The built-in ISO 1438 formulas for flow calculations are preprogrammed with the most common flumes and weirs, such as Parshall, Venturi, Palmer-Bowles flumes and V-notch and rectangular weirs. Also to be used with non-standard channels and weirs often installed at waste water plants and stormflow locations.

713 Open Channel Flowmeter is primarily used for measuring flow outlets from waste water treatment plants. The flow is calculated upon the water level, provided by either ultrasonic or hydrostatic level transmitter.

Built-in ISO 1438 formulas will provide the most common formulas but it is possible to calculate flow from simple formula and level/flow linearization as well.

Built-in totalizer with non-resettable counter and short term flow overview.

Easy to use and setup due to symbolic navigation buttons and multiple display languages.

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    Security

    Password protection

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    Flexibility

    Level measuring with either hydrostatic or ultrasonic sensors

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    Output

    Five output relays and 4-20mA

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    ISO 1438

    Preinstalled formulas for most common flumes and weirs

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    Built-in Preset Counter

    For e.g. water sampler control

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    Easy Configurable Alarms

    Of high low flow and extension of predefined volumes over time

In Waste Water, the MJK 713 Flow Converter measures the water level behind a weir or in a pre-fabricated flume. It converts the level using the ISO norm 1438 flow formula to calculate an actual flow and totalized volume. This gives the 713 flow converter the highest possible accuracy and therefor it can be used for billing purposes. To provide solutions for many applications, MJK Open Channel Flow Meters are supplied with ultrasonic or hydro-static sensors.

713 Flow Converter's outputs can be connected to an external instrument or data logger to record flow volumes. The digital outputs are used for, e.g. an external alarm device to warn of excessively high or low flow, an external flow counter or a liquid sampler controlled proportionate to flow.

In Waste Water, the MJK 713 Flow Converter measures the water level behind a weir or in a pre-fabricated flume. It converts the level using the ISO norm 1438 flow formulas. This way, an actual flow and totalized volume is calculated which gives the 713 flow converter the highest possible accuracy and it can therefor be used for billing purposes.

To provide solutions for many applications, MJK Open Channel Flow Meters are supplied with ultrasonic or hydro-static sensors.

713 Flow Converter's output can be connected to an external instrument or data logger to record flow volumes. The digital outputs are used for, e.g. an external alarm device to warn of excessively high or low flow, an external flow counter or a liquid sampler controlled proportionate to flow.


Palmer-Bouwlus Flume installed in a sewer system, flow measured by MJK 713.

The ultrasonic sensor is mounted on the MJK standard bracket on the flume, the Flow converter is installed outside the well in a panel.

The V-notch weir shown is a storm-flow construction in the Netherlands.

MJK 713 using ultrasonic sensor to measure the level, calculated to storm flow volume based on ISO 1438 formula.


Features

Output

Accordion control

5 programmable relays and 4-20 mA for actual flow indication

Flow Measurement

Accordion control

The flow is calculated based on level input from the hydrostatic or ultrasonic sensor.

Simple Setup

Accordion control

Multi-language display with easy-to-use menu system.

Multiple Function

Accordion control

Measuring stormflow or continuous flow. 

Predefined Alarms

Accordion control

High/low flow, daily and hourly volume alarm.

Individual Formula Creation

Accordion control

Can be used with non-standard channels and weirs.

 

All MJK PRODUCTS ARE DELIVERED WITH A ONE YEAR FACTORY WARRANTY.
THE WARRANTY CAN BE EXTENDED BY UP TO FIVE YEARS.

The separate up-to-five-years additional warranty contract must be ordered upon ordering your MJK product.

Converter specifications

Measuring ranges
0-1 m, 0-3 m
Supply
220-240V AC, 110-120V AC or 24V DC appr. 10 VA
Accuracy
≤ ±1 % (min. ±1 mm)