Where is a professional manufacturer of flow meters?Huai'an Kehao Automation Instrument Co., LtdThe flow meters sold have good quality, high reputation, and very favorable prices!

Polyurethane rubber flowmeter-Huai'an Kehao Automation Instrument Co., Ltd. - Wu

Electromagnetic flowmeter;Polyurethane rubber flowmeterHigh pressure tap water flow rate; Air conditioning water flow meter; Fluoroboric acid flowmeter;Ferric chloride flowmeter; Copper chloride flowmeter; Liquid alkali flowmeter; Acidic liquid flowmeter; Alkaline liquid flowmeter; Water treatment flowmeter; Cooling water flow meter; Circulating water flow meter; Distilled water flow meter; Sodium bicarbonate flowmeter; Oxalic acid flowmeter

The LD series electromagnetic flowmeter is a fully intelligent instrument based on Faraday's law of electromagnetic induction. Its all Chinese electromagnetic converter core adopts a high-speed central processing unit, with fast computer speed, high accuracy, and reliable measurement performance. The stable magnetic field and special magnetic circuit structure make it highly resistant to external interference, and it is widely used in the measurement and control of conductive liquids in industries such as chemical, power, metallurgy, petroleum, sewage, medical, and food.
Product Features
Measurement is not affected by changes in fluid density, viscosity, temperature, pressure, and conductivity;
Measure the flow components inside the tube, with no pressure loss and low requirements for straight pipe sections;
Series nominal diameter DN10~DN600. There are multiple 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 150:1;
The converter can be integrated or separated from the sensor;
The converter adopts a 16 bit high-performance microprocessor, 2X16LCD display, convenient parameter setting, and reliable programming;
The flowmeter is a bidirectional measurement system equipped with three integrators: forward total, reverse total, and differential total; It can display forward and reverse flow rates and has multiple outputs: current, pulse, digital communication HART；
The converter adopts surface mount technology (SMT) and has self checking and self diagnostic functions;
Rubber and polyurethane lined sensors are inherently immersive structures;
Explosion proof instruments can be used in corresponding explosion-proof places;
technical indicators
◆ Caliber
PTFE lining diameter: DN10 (F46) DN15 (F46) DN15~DN600
Rubber lining diameter: 40 50 65 80 100 125 150 200 250
300 350 400 500 600
◆ nominal pressure DN10~50 ≤ PN4.0MPa
DN65~150 ≤PN1.6MPa
DN200~600 ≤PN1.0MPa
◆ Environmental temperature
Sensor: -25 ℃~+60 ℃
Converter and integrated type: -10 ℃~+60 ℃
Integrated high-temperature separation type of fluid
Polytetrafluoroethylene
rubber
F46
PFA
Flow direction: forward, reverse, and total difference
Flow measurement range: The corresponding flow rate of 0.3~1.5m/s is 0.0283~1520m ³/h
Range ratio: 150:1
Accuracy level: 1.0 level, 0.5 level
◆ Conductivity range: ≥ 5 μ s/cm (generally 200~800ms/cm)
◆ Electrode materials: 316L, Ti, tantalum (Ta), Hastelloy, platinum, coated tungsten carbide
Power supply: 85~265V, 45~63Hz
Pulse frequency: 0~1KHz, optically isolated OCT, external power supply ≤ 35V, conducting, and electrode high current of 25mA
Protection level: IP65, submersible type IP68
◆ Connection method: flange connection, using HG20592~2009 standard (carbon steel, stainless steel)
◆ Straight pipe section: Front straight pipe section ≥ 10D
Rear straight pipe section ≥ 5D ◆ Total power consumption:<20W

flow range

Note: The flow rate of the flowmeter should be within the range of 0.3~15m/s. At this time, the diameter of the flowmeter should be selected to be the same as the user's diameter. When the flow rate is lower than 0.3m/s, it is recommended to increase the flow rate at the front of the instrument before use.

Selection principle
The tested fluid must be a conductive liquid or slurry with a conductivity of not less than 5 μ s/cm. The tested fluid should not contain a large amount of ferromagnetic substances or bubbles. The appropriate pressure rating, lining material, electrode material, and instrument structure should be selected based on the characteristics of the tested fluid.
Selection of Path
1. Due to the high range of 150:1 of LD electromagnetic flowmeter, the instrument diameter is usually chosen to be the same as the process pipeline.
2. If the measured medium contains solid particles, the recommended flow rate range is 1-3 m/s. If the actual flow rate is too high and cannot be changed, the instrument diameter can be chosen to be larger than the process pipeline diameter to appropriately reduce the fluid flow velocity of the flowmeter measurement section and reduce the wear of particles on the electrode and lining.
If there may be sediment in the process pipeline, it is recommended to have a flow rate of 2-5m/s. If the actual flow rate is too low and it is inconvenient to change the process pipeline, the instrument diameter can be chosen to be smaller than the process pipeline diameter to increase the fluid flow rate of the flowmeter appropriately and avoid the influence of sediment on the accuracy of the instrument.
4. In cases where the flow rate is too low and high-precision measurement is required, sensors smaller than the diameter of the process pipeline can be selected to increase the flow rate and ensure high accuracy.
In situations 2, 3, and 4 mentioned above, reducers must be installed upstream and downstream of the flowmeter. The center cone angle of the reducer should not exceed 15 °, and there should be at least 5 times the diameter of the process pipeline in the straight section upstream of the reducer.
To assist in selection, the following table lists several representative flow rates corresponding to flow rates. The flow velocity corresponding to any flow rate can also be quickly calculated using this table: if the flow rate value Q (m ³/h) is known, and the flow velocity value Q1 corresponding to the 1m/s flow velocity under the corresponding diameter is found in the table, then the corresponding flow velocity V=Q/Q1 (m/s).
Selection of lining materials

Selection of electrode materials

Due to the wide variety of media and the complex factors such as temperature, concentration, and flow rate that affect their corrosiveness, the above two tables are for reference only.
Users should make their own choices based on the actual situation, and if necessary, conduct corrosion resistance tests on simulated materials, such as hanging tests.
Selection of lining protection flange and grounding flange