electronic onicon turbine flow meter

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Features of LW series liquid turbine flowmeter:

·Small pressure loss, impeller with anti-corrosion function

·Strong anti-magnetic interference and vibration ability, reliable performance and long life

·The whole machine has strong functions and low power consumption

·Smart display with nonlinear compensation function

·The instrument coefficient can be set online by the button and displayed on the LCD screen

·Using EEPROM to protect cumulative flow and meter coefficient for up to ten years

Technical Parameters:

Nominal diameter: DN4～DN200

Accuracy grade: ±0.5%, ±1%

Connection method: threaded connection, flange connection, etc.

Medium temperature: -20℃～120℃

Nominal pressure: 1.6Mpa～6.3 Mpa(>6.3 Mpa)

Display mode: pulse output, 4-20mA standard signal

                7-digit LCD display cumulative and instantaneous flow

Explosion-proof mark: ExdmⅡBT4

Power supply: 5～24VDC, 24VDC

                3V lithium battery can be used continuously for more than six years

The vortex flowmeter is a velocity flowmeter. The stability of the vortex separation is affected by the flow rate, so it has certain requirements for straight pipe sections, generally the first 10D and the last 5D; when measuring liquids, the upper flow rate is subject to pressure loss and cavitation. Phenomenon limit, generally 0.5-8m/s; measuring gas, the upper limit flow rate is limited by the change of the compressibility of the medium, the lower limit flow rate is limited by the Reynolds number and sensor sensitivity, steam is 8-25m/s; stress vortex flow The meter is sensitive to vibration, so when installing a flow meter in a pipeline with greater vibration, the pipeline must have certain shock absorption measures; the pressure vortex flowmeter uses piezoelectric crystal as the detection sensor, so it is limited by temperature, generally- 40～+300℃.

Vortex flowmeters are difficult to measure, mainly because steam is a relatively special medium. With changes in working conditions (such as temperature and pressure), hot steam often transforms into saturated steam, forming a vapor-liquid two-phase flow medium. For the steam with the phase flow that changes frequently, the current flow meter is used to measure the gas flow, and there will definitely be the problem of inaccurate measurement. The solution to this problem is to maintain the superheat of the steam and minimize the water content of the steam. For example, strengthen the insulation measures of the steam pipe and reduce the pressure loss of the steam to improve the accuracy of the measurement. However, these methods cannot completely solve the steam flow measurement. Inaccurate problem, but the fundamental way to solve the problem is to develop a flow meter that can measure two-phase flow media