The XRLDM-61 intelligent open channel dedicated flowmeter is an open channel measurement flow system composed of a flow display instrument, a flow meter, and a liquid level meter, which uses the velocity area method to measure flow.

The XRLDM-61 intelligent open channel dedicated flowmeter system is suitable for flow measurement of rectangular and trapezoidal open channels and culverts in reservoirs, rivers, water conservancy projects, urban water supply, sewage treatment, farmland irrigation, water management and water resources.

Details introduction:XRLDM-61 Open Channel Special Flow Meter XRLDM-61 Intelligent Open Channel Special Flow MeterXRLDM-61 Open Channel Special Flow Meter XRLDM-61 Intelligent Open Channel Special Flow Meter

1Special flowmeter for open channelssummary:XRLDM-61

Intelligent

Special flowmeter for open channels

It is an open channel flow measurement system composed of a flow display instrument, a velocity meter, and a liquid level meter, which uses the velocity area method to measure flow.The XRLDM-61 intelligent open channel dedicated flowmeter system is suitable for flow measurement of rectangular and trapezoidal open channels and culverts in reservoirs, rivers, water conservancy projects, urban water supply, sewage treatment, farmland irrigation, water management and water resources.XRLDM-61 Open Channel Special Flow Meter XRLDM-61 Intelligent Open Channel Special Flow Meter

IISpecial flowmeter for open channelsworking principle:

·XRLDM-61 Intelligent Open Channel Special Flow Meter

At flow rate

-A new intelligent flow system based on water level calculation method and advanced servo water level tracking and speed measurement system and microprocessor are adopted to ensure the accuracy of speed measurement and calculation. According to the requirements of channel width and measurement accuracy, a mathematical model for open channel flow measurement is adopted.·The microprocessor in the XRLDM-61 intelligent open channel flow system display instrument calculates the average instantaneous flow rate of the channel section based on the measured water level and flow velocity values from the sensors, as well as the geometric dimensions, slope coefficient, channel accuracy, hydraulic slope, and vertical correction coefficient of the flow velocity in the channel. It also calculates the average instantaneous flow rate of the channel section according to a predetermined mathematical model.XRLDM-61 Open Channel Special Flow Meter XRLDM-61 Intelligent Open Channel Special Flow Meter

IIISpecial flowmeter for open channelscharacteristic:

·

Large measurement range（

0.05-10m/s）， Flow measurement is not affected by the backflow of tributaries;·The measurement is not affected by floating objects, sediment, bubbles, and significant changes in water level in the water. The flow velocity sensor has a simple structure, small volume, and easy installation, which does not cause resistance to the water flow. Standard channels can be installed directly without modification, with low installation and construction costs;·Instrument display function: It can simultaneously display measurement data such as water level, average flow velocity of the section, instantaneous flow rate of the section, and cumulative flow rate;

·

Instrument output interface: pulse (frequency)

RS485/RS232、 (Current);·Instrument alarm content: alarm items such as water level exceeding limit, flow rate exceeding limit, flow rate exceeding limit, etc;·It has the function of long-term data storage, which can save the set parameters and flow values in the event of long-term power outage;

·The instrument has wired and wireless data remote transmission functions（GPRS wireless communication);

·

Communication protocol support standards

Modbus (RTU) protocol;·The instrument has built-in lightning protection function;XRLDM-61 Open Channel Special Flow Meter XRLDM-61 Intelligent Open Channel Special Flow Meter

4Special flowmeter for open channelsSpecification

·Measurement accuracy: flow velocity± 1.0%, water level ± 0.5%, system ± 2.5%

·power waste:<5VA

·Power Supply:DC12V/24V、AC220V
·Measurement range: flow velocity
0.05-10m/sCanal width

0.5-20mDepth of channel9999999999

0.5-20m·10000

Accumulated traffic display * maximum value:·19.99

Instantaneous flow display * maximum value:·19.999

Flow rate display * large value:

·Water level display * maximum value:XRLDM-61 Open Channel Special Flow Meter XRLDM-61 Intelligent Open Channel Special Flow Meter

5Special flowmeter for open channels

Installation diagram:（

1) Electromagnetic flow velocity - ultrasonic liquid level schematic diagram:

（

2) Electromagnetic flow velocity - schematic diagram of pressure resistance liquid levelXRLDM-61 Open Channel Special Flow Meter XRLDM-61 Intelligent Open Channel Special Flow Meter Installation MethodXRLDM-61 Open Channel Special Flow Meter XRLDM-61 Intelligent Open Channel Special Flow Meter