Henan Airlines Traffic Instrument Co., Ltd. the XFE Series Liquid Turbine flowmeter About 

 The XFT Series turbine flow meter works 

 When the measured fluid flow through the sensor in the fluid under the action of the impeller rotation by force, its speed and pipeline average velocity is proportional to the impeller rotation cycle to change the magnetic reluctance of the converter value. Flux followed by cyclical changes in the detection coil, resulting in periodic EMF electrical pulse signal by the amplifier, and sent to the instrument display. 

 Practical turbine flowmeter flow equation 

 qv = f / K 

 qm = qvρ 

 Where 
 qv, qm-for volume flow, m3 / s, the mass flow rate, kg / s; 

 f-flow meter output signal frequency, Hz; 

 K-flow meter, the meter factor P/m3. 

 The meter factor can be divided into Sec linear segment and non-linear segment. The linear section is about two-thirds of the working section, its characteristics and structure of the sensor size and fluid viscosity. Nonlinear segment, features bearing friction, fluid viscous resistance greater impact. When the flow is lower than the sensor flow limit, the meter factor is rapidly changing with the flow. Pressure loss and flow rate is approximately the square of. When the flow exceeds the flow limit to prevent cavitation. The structure is similar to the shape of the curve of the turbine flowmeter features are similar, he only differ in the level of systematic errors. 

 The XFT series main features of the turbine flowmeter 

 1) 
 High accuracy for liquids are generally ± 0.25% of the R-± 0.5% R, high-precision up to ± 0.15% R; medium is gas, generally ± 1.5% ± 1% of the R-R, the special type of ± 0.5% R-± 1% R. In all flow meter, it belongs to the most accurate. 

 2) 
 Good repeatability, short-term repeatability of up to 0.05% -0.2%, good reproducibility, such as the regular calibration or online calibration can be very high accuracy, in the trade settlement is the preferred flow meter. 

 3) 
 The output pulse frequency signal, suitable for the measurement of total and computer connection, no zero drift, strong anti-interference ability. 

 4) 
 Availability of high frequency signals (3-4kHz) signal resolution and strong. 

 5) 
 Range is wide, medium and large caliber up to 40:1-10:1, small-diameter is 6:1 or 5:1. 

 6) 
 The compact and lightweight, convenient installation and maintenance, flow capacity. 

 7) 
 Suitable for high pressure measurements on the body of the instrument table without opening, easily made from high-pressure instrument. 

 8) 
 Specific sensor types can be designed in accordance with the special needs of the users of all kinds of special sensors, such as low temperature, two-way, underground type, sand-specific type. 

 9) 
 The insertion can be made suitable for large diameter measurement, pressure loss, low prices, from time to drying out, easy installation and maintenance. 

 10) Liquid Turbine flowmeter does not apply to the higher viscosity media (except for the high-viscosity type), with the increase of viscosity, flow meters to measure off the assembly line value improved the scope of the degree of narrowing poor linearity. 

 11) fluid properties (density, viscosity) on the instrument characteristics have a greater impact. Gas flow meter is susceptible to the density of liquid flow meter is sensitive to changes in viscosity. Closely related to the density and viscosity with temperature, pressure, temperature in the field, the pressure fluctuations are inevitable, according to their degree of accuracy the impact to take compensatory measures in order to maintain a high measurement accuracy. 

 12) by the flow meter to flow velocity distribution distortion and rotating flow, the sensor on the downstream side of the need to set up a long straight pipe, such as the installation space is limited, can be installed in order to shorten the length of straight pipe flow regulator (rectifier) . 

 13) is not suitable for the measurement of pulsating flow and mixed flow. 

 14) 
 The cleanliness of the measured medium, require a higher limit its field of application, although the filter can be installed in order to adapt to the dirty media, but also to bring pressure loss increases to maintain the amount of increase in side effects. 

 Please contact 

 Sales Manager: Zeng ultra- 

 Sales Hotline: 18637313237 

 15517300086 

 Tel :0373-2,677,766 

 Fax :0373-2,678,899 

 QQ: 83,380,304 

 Postal 
 Code: 453 700 

 Ground 
 Address: Grace Avenue, Xinxiang City, Henan Province, the western part of high-Bay northbound 

 Name 
 Said: Henan Airlines Traffic Instrument Co., Ltd. 

 Main 
 Page: http://www.hnxhyb.com 
 /