Lefoo Electromagnetic Flowmeter LFLD

*DN700 ~ DN3000, the accuracy of special order can reach +0.3% of the indicated value (flow velocity ≥ 1m/s) or +3mm (flow velocity < 1m/s).

*Specially provide 0.2% accuracy flow meter.

The measurement is not affected by changes in fluid density, viscosity, temperature, pressure and conductivity; .

There are no obstructing flow parts in the measuring tube, no pressure loss, and the requirements for straight pipe sections are low;

The nominal diameter of the series is DN4 ~ DN3000. There are various options for sensor lining and electrode materials;

The converter adopts a novel excitation method, with low power consumption, stable zero point and high accuracy. The flow range can reach 1500:1;

The converter can be combined with the sensor to form an integral type or a separate type;

The converter adopts 16-bit high-performance microprocessor, 2x16LCD display, convenient parameter setting and reliable programming;

The flowmeter is a two-way measurement system with three built-in totalizers: forward total, reverse total and difference total; it can display forward and reverse flow, and has a variety of outputs: current, pulse, digital communication , HART, RS485 protocol;

The converter adopts surface mount technology (SMT), with self-check and self-diagnosis functions;

Rubber and urethane lined sensor for intrinsic immersion structure;

Explosion-proof instruments can be used in corresponding explosion-proof places;

Electromagnetic flowmeter is used to measure the volume flow of conductive liquid and slurry in closed pipelines. It is suitable for chemical, electric power, metallurgy, petroleum, water supply and drainage, papermaking, medicine, food and other departments.

LEFOO Company

LEFOO Industrial Co., Ltd has 6 laboratories with advanced and complete equipment to develop and improve the accuracy of existing products in various ranges and various temperature conditions. It also has a semi-automatic dust-free production center for the manufacture of pressure transmitters.  Please contact our sales team to get the best pressure transmitter price.

Selection Help Guide

Selection principles.

The fluid to be tested must be a conductive liquid or slurry with a conductivity of not less than 50μS/cm, and the fluid to be tested should not contain many ferromagnetic substances or bubbles.

The appropriate pressure level, lining material, electrode material and instrument structure should be selected according to the characteristics of the fluid to be measured.

Path selection

1. Because the electromagnetic flowmeter has a high range of 1500:1, the diameter of the instrument is usually the same as that of the process pipeline.

2. If the measured medium contains solid particles, the recommended flow rate range is 1 - 3m/s. If the actual flow rate is too large and it is inconvenient to change, the diameter of the optional instrument is larger than that of the process pipeline.

To reduce the flow rate of the fluid in the measuring pipe section of the flowmeter properly, reduce the wear of the particles on the electrode and the lining.

3. If there may be sediment in the process pipeline, the recommended flow rate is 2-5m/s. If the actual flow rate is too small and it is inconvenient to change the process pipeline, the optional instrument with a small diameter

According to the diameter of the process pipeline, the fluid flow rate of the flowmeter can be appropriately increased to avoid the influence of sediment on the accuracy of the meter.

4. When the flow rate is too small and high-precision measurement is required, a sensor smaller than the diameter of the process pipeline can be selected to increase the flow rate and ensure higher accuracy.

In the above 2, 3, and 4 cases, reducers must be installed upstream and downstream of the flowmeter. The central cone angle of the reducer should not be greater than 15°, and there should be at least a straight pipe section upstream of the reducer that is five times the diameter of the process pipe.