Non full pipe flowmeter is an automatic flow measurement instrument that uses the velocity area method to continuously measure fluid flow in open pipelines, such as semi pipe sewage pipelines and high flow pipelines without overflow weirs. It can measure and display instantaneous flow rate, flow velocity, cumulative flow rate, and other data. Especially suitable for the needs of municipal rainwater, wastewater, sewage discharge, and irrigation water pipelines and other metering places.

The non full pipe flow meter is composed of an electromagnetic flow velocity sensor, an ultrasonic water level sensor, and a flow display instrument. It continuously measures the flow velocity and liquid level of the fluid in the pipeline. As long as the user inputs the inner diameter of the circular pipeline or the width of the square pipeline, the LDM-51 non full pipe flow meter will automatically calculate the flow rate in the pipeline and display the instantaneous flow rate, flow velocity, cumulative flow rate and other measurement parameters in the pipeline.

Functional Features of non full tube electromagnetic flowmeter

Can be used for measuring the flow rate of open non full pipe pipelines (round pipes, rectangular pipes, or other irregular pipes);
Can be used for continuous measurement of municipal rainwater, wastewater, sewage discharge, and irrigation water pipelines;
Can achieve bidirectional flow measurement in both forward and reverse directions;
Sensors can work reliably for a long time in harsh environments and sewage quality;
Flow velocity measurement range 0.05-10m/s;
High accuracy of flow measurement, and not affected by downstream, direct current seepage, blockage and other factors;
Large screen, backlit LCD display, able to read measurement data clearly both in strong light and at night;
The instrument display and output functions are complete, capable of displaying instantaneous flow rate, flow rate, cumulative flow rate and other data, and has computer communication interfaces 232 and 485 (optional);
Equipped with GSM and GPRS wireless data remote transmission functions (optional);
It has the functions of power outage timing, counting, and clock.

Non full pipe electromagnetic flowmeter is composed of a flow rate sensor, a water level sensor, and a flow display instrument, which continuously measures the flow rate and liquid level of the fluid in the pipeline. Users only need to input the inner diameter of the circular pipeline or the width of the square pipeline, and the non full pipe flowmeter will automatically calculate the flow rate in the pipeline and display the measurement parameters such as instantaneous flow rate, flow rate, and cumulative flow rate in the pipeline.

Non full tube electromagnetic flowmeter is an automatic flow measurement instrument that uses the velocity area method to continuously measure fluid flow in open pipelines (such as semi pipe sewage pipelines and high flow pipelines without overflow weirs). It can measure and display instantaneous flow rate, flow velocity, cumulative flow rate, and other data. Especially suitable for the needs of municipal rainwater, wastewater, sewage discharge, and irrigation water pipelines and other metering places.

Non full tube flow meters can measure single, uniform, and stable liquids such as water, seawater, chemical liquids, alcohol, and various oils that can transmit ultrasonic waves. They can also measure liquids containing bubbles, impurities, and particles such as urban drainage, sewage, industrial wastewater, slurry, crude oil, mud, oil-water mixtures, etc. It is a new type of product that comprehensively improves the anti-interference, stability, and economy of the instrument itself. Combining liquid level gauges for flow measurement in non full pipes or channels effectively solves the shortcomings of full pipe ultrasonic flow meters.

Non full pipe flow meter function: measure and display the flow rate, flow rate, and status of liquids in pipelines and channels. Composition: Flow rate sensor, transmitter, liquid level sensor, installation accessories and cables. Simultaneously measuring average flow velocity, water depth, and water temperature, with high accuracy for measuring flow in narrow channels. Typical applications: Measurement and monitoring of flow in closed pipelines such as municipal sewage, industrial sewage, urban drainage pipelines, and factory discharge outlets.

Technical parameters of non full tube electromagnetic flowmeter

property	Technical parameter
Nominal diameter	Round pipe DN100-DN3000; Rectangular pipe: Width ≤3m≤3m
Overall measurement accuracy	Level 2.5
Neoprene rubber	氯丁橡胶
Electrode material	316L, Hastelloy B, Hastelloy C, titanium, tantalum, stainless steel coated with tungsten carbide
Electrode form	Normal form
Connection mode	Flange connection
Ambient temperature	-10～+60℃（The liquid in the pipe will not freeze）
Relative humidity	5%～90%
Nominal pressure	0.6Mpa、1.0Mpa、1.6Mpa
Power supply	AC220V、DC24V、12V
Dielectric conductivity	≥20μs/cm
Measuring range	1500：1  Velocity setting<15m/s
Structural form	Body type, immersion

Non full tube electromagnetic flowmeter features:

(1) Can be used for measuring the flow rate of open non full pipe pipelines (round pipes, rectangular pipes, or other irregular pipes).
(2) Can be used for continuous measurement of municipal rainwater, wastewater, sewage discharge, and irrigation water pipelines.
(3) Can achieve bidirectional flow measurement in both forward and reverse directions.
(4) Sensors can work reliably in harsh environments and sewage quality for a long time.
(5) Flow velocity measurement range 0.05-10m/s
(6) The flow measurement accuracy is high, and it is not affected by downstream, direct current seepage, blockage and other factors.
(7) The large screen and backlight LCD display can clearly read measurement data, whether under strong light or at night.
(8) The instrument display and output functions are complete, and can display instantaneous flow rate, flow rate, cumulative flow rate and other data. It also has computer communication interfaces 232 and 485 (optional).
(9) Equipped with GSM and GPRS wireless data remote transmission functions (optional).

Precautions for installation of non full tube electromagnetic flowmeter:

1. The location and orientation of the device are determined according to the requirements, but the electrode axis needs to be horizontal.
2. It is necessary to ground the non full tube electromagnetic flowmeter to reduce the introduction of interference signals. There are two requirements for grounding: first, it is necessary for the grounding wire of the sensor and converter to be conductive with the measured medium, and second, the ground should be at zero potential.
3. To avoid signal interference, it is necessary to use dedicated shielded wires for the signal line between the sensor and the converter, and to thread them separately in the grounding steel pipe. The signal cable and power cable cannot be placed in the same steel pipe.
4. When the flow meter device is underground, it is necessary to set up an external well.
5. The unstable activity of the medium has no impact on the measured values, so there are no special requirements for the front and rear straight pipe sections of the device flowmeter.