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technical article
Difference between radar level gauge and RF admittance
2011-5-21 17:00:00

发射一定的高频无线电波作用于探头上,以此分析和确定容器内物位的变化。 The radio frequency admittance switch emits a certain high frequency radio wave to act on the probe, so as to analyze and determine the change of the level in the container. Radio frequency admittance switches change the frequency of radio waves depending on the material being probed. The probe of the RF admittance switch and the container wall form a two-stage capacitor with a fixed distance. The insulating material of the probe and the surrounding air provide an insulating medium. When the air is replaced by other media, the capacitance formed by the probe and the container wall will change. This change will cause changes in the radio waves acting on the RF admittance switch probe. This change is detected by the internal circuit of the RF admittance switch and compared with the set value to determine the amount of change. When the value is the same as the set value, the digital signal is output.

的技术优势: TRUECAP 射频导纳开关 的射频电容传感器为您提供经济、可靠的点位控制, MK 2E 射频导纳开关,为您的应用提供最好地解决方案。 Technical advantages of RF admittance switches: The RF capacitive sensors of TRUECAP RF admittance switches provide you with economical and reliable point control. MK - 2E RF admittance switches provide the best solution for your application. The probe of the RF admittance switch can be applied to dust and solid particulate matter, and it can provide high sensitivity, stability, and durability, and it is also excellent for liquid and mud. High sensitivity and anti-hanging material. RF admittance switches are widely used, and several typical occasions are as follows: chemical plastic films; feed / cereal rubber drugs; liquid wastewater sand; food slurry cement; powder coatings / coal coal; granular solid oil pulp.


是依据时域反射原理( TDR )为基础的雷达料位计,雷达料位计的电磁脉冲以光速沿钢缆或探棒传播,当遇到被测介质表面时,雷达料位计的部分脉冲被反射形成回波并沿相同路经返回到脉冲发射装置,发射装置与被测介质表面的距离同脉冲在其间的传播时间成正比,经计算得出液位高度。 Guided wave radar level gauge is a radar level gauge based on the time domain reflection principle ( TDR ). The electromagnetic pulse of the radar level gauge propagates along the steel cable or probe at the speed of light. When it encounters the surface of the measured medium, the radar Part of the pulse of the level gauge is reflected to form an echo and returns to the pulse transmitting device along the same path. The distance between the transmitting device and the surface of the measured medium is proportional to the propagation time of the pulse during the calculation.


的技术优势:雷达料位计对液体、颗粒及浆料连续物位测量, 测量不受介质变化、温度变化、惰性气体及蒸汽、粉尘、泡沫等的影响。 Technical advantages of the guided wave radar level gauge : The radar level gauge can continuously measure the level of liquids, particles and slurry, and the measurement is not affected by changes in media, temperature, inert gases and steam, dust, foam, etc. 5MM ,量程 60 米,耐 250 度高温、 40 公斤高压,雷达料位计计适用于爆炸危险区域酸碱储罐、浆料储罐、固体颗粒、小型储油罐,各类导电、非导电介质、腐蚀性介质。 The radar level gauge has a precision of 5MM , a range of 60 meters, a high temperature resistance of 250 degrees, and a high pressure of 40 kg. The radar level gauge is suitable for acid and alkali storage tanks, slurry storage tanks, solid particles, and small oil storage tanks in explosion-endangered areas. Various conductive, non-conductive and corrosive media. Such as coal silos, ash silos, oil tanks, acid tanks, etc.



Article Keywords: radar level gauge, RF admittance, measurement, material