KH-LDEIntelligent electromagnetic flowmeterDetailed information:Shandong specializes in providing distilled water flow meters/electromagnetic flow meters
KH-LDE electromagnetic flowmeter is an induction instrument that measures the volume flow rate of conductive medium inside a tube based on Faraday's law of electromagnetic induction. It adopts embedded technology of single-chip microcomputer to achieve digital excitation, and adopts CAN fieldbus on the electromagnetic flowmeter, which is the best in China and has reached the domestic level of technology. The KH-LDE intelligent electromagnetic flowmeter can not only meet on-site display requirements, but also output 4-20mA current signals for recording, regulation, and control. It has been widely used in industrial technology and management departments such as chemical, environmental protection, metallurgy, medicine, papermaking, and water supply and drainage. KH-LDE electromagnetic flowmeter can not only measure the flow rate of general conductive liquids, but also measure the volumetric flow rate of liquid-solid two-phase flow, high viscosity liquid flow, and salt, strong acid, and strong alkali liquids.
Performance characteristics of electromagnetic flowmeter:Shandong specializes in providing distilled water flow meters/electromagnetic flow meters
The instrument structure is simple, reliable, without moving parts, and has a long working life.
There are no flow blocking components, and there is no pressure loss or fluid blockage.
◆ No mechanical inertia, fast response, good stability, can be applied to automatic detection, adjustment, and program control systems.
The measurement accuracy is not affected by the type of measured medium and its physical parameters such as temperature, viscosity, density, pressure, etc.
◆ Different combinations of PTFE or rubber lining and electrode materials such as Hc, Hb, 316L, Ti can adapt to the needs of different media.
There are various flow meter models available, including pipeline type and plug-in type.
Using EEPROM memory, the storage of measurement and operation data ensures safety and reliability.
◆ It has two types: integrated and separated.
High definition LCD backlit display.
Technical parameters of electromagnetic flowmeter:
Instrument accuracy: pipeline type 0.5 level, 1.0 level; Insertion type 2.5 level
Measurement medium: various liquid and liquid-solid two-phase fluids with conductivity greater than 5 μ S/cm.
Flow velocity range: 0.2-8m/s
Work pressure: 1.6MPa
◆ Environmental temperature: -40 ℃ to+50 ℃
◆ Medium temperature: PTFE lining ≤ 180 ℃
Rubber material lining ≤ 65 ℃
Explosion proof mark: Exmibd Ⅱ BT4
External magnetic interference: ≤ 400A/m
◆ Shell protection: Integrated type: IP65;
Detached type: Sensor IP68 (5 meters underwater, limited to rubber lining)
Converter IP65
Output signal: 4-20mA.DC, load resistance 0-750 Ω
Communication output: RS485 or CAN bus
◆ Electrical connection: M20 × 1.5 internal thread, φ 10 cable hole
Power supply voltage: 90-220V AC, 24 ± 10% V.DC
◆ High power consumption: ≤ 10VA
Selection of electromagnetic flowmeter instruments:
◆ Range confirmation
The flow rate of the medium measured by the general industrial electromagnetic flowmeter should be 2-4m/s. In special circumstances, the low flow rate should not be less than 0.2m/s, and the high flow rate should not exceed 8m/s. If the medium contains solid particles, the commonly used flow rate should be less than 3m/s to prevent excessive friction between the lining and the electrode; For viscous fluids, the flow velocity can be chosen to be greater than 2m/s. A higher flow velocity helps to automatically eliminate the effect of viscous substances attached to the electrode, which is beneficial for improving measurement accuracy.
Under the condition that the range Q has been determined, the size of the flowmeter diameter D can be determined based on the range of flow velocity V mentioned above, and its value can be calculated by the following formula:
Q=πD²V/4
Q: Flow rate (㎡/h) D: Inner diameter of pipeline V: Flow rate (m/h)
The range Q of the electromagnetic flowmeter should be greater than the expected large flow value, while the normal flow value should be slightly greater than 50% of the flowmeter's full range scale.