The difference between the tuning fork level switch and radio frequency admittance switches

Tuning fork level switch can only make liquid level switch, it is through the detection of vibration frequency and amplitude changes to trigger a switch. Radio frequency admittance switch is measured with a high frequency current admittance method. This switch can do, also can do the amount of continuous measurement. The following are the two principle introduced working principle of the tuning fork level switch is by installing in the fork of a piezoelectric crystal sound and vibration under a certain resonance frequency. When the measured medium in contact with a tuning fork. The amplitude and frequency of the tuning fork will mutate, intelligent circuit to detect and converts the change to a switch signal. Radio frequency admittance switches working principle of radio frequency admittance level control technology is a kind of from the capacitive material level control technology developed anti hanging ( Sensors of the adhesive material called hanging) Better performance, more reliable, more accurate measurement, applicability broader level control technology, and other Radio frequency admittance & quot; In & quot; Admittance & throughout; For electrical impedance in the countdown, the meaning of it by resistance components, integrated capacitive component perceptual component formed, and & other; Rf & throughout; The high frequency, so the rf admittance technology can be understood as admittance method is measured with a high frequency current. The important distinction between the point of the radio frequency admittance technique and capacitance technology is adopted three end technology and the diversity of measurement parameters. Circuit unit center end connected with the center line of the coaxial electric measurement signal, and then connect to the side in the center of sensor. Suspended in a coaxial cable shielding layer at the same time range is very small and very stable, but with the measuring signal equipotential, phase and frequency, but are not directly, namely, relation between electrical isolation from each other on the level of its effect is equivalent to that measured signal through a strong in-phase amplifier gain for driving ability, output connected to the coaxial cable shielding layer, and then connected to the sensor on the screen of hidden layer ground is another independent wires in the cable. Because of the coaxial cable of the center line and the relationship in the outer shielding, so there is no potential difference between them, there would be no current flow, which leaked from the center line, no current is equal to or is there between both capacitance is equal to zero. So the effect of the temperature of the cable, the installation capacitance etc. There would be no effect. For hanging impact on sensor problem, adopt a new sensor structure, five layers concentric structure, sensor structure: ZUI sheath maerial layer is the center, in the middle is a shield, ZUI grounding installation thread is outside, can be isolated with insulation layer. With coaxial cable is the same situation, the center there is no difference between sheath maerial and shielding layer, even if hanging impedance sensor is small, there will be no current flow, electronic instrument measurement is from center of sensor only (opposite to the tank wall Ground) Current, because along the sensor current can hinder the shield returns to vessel wall, thus to current material can only be measured by the end of the sensor to across the container wall. U center sheath maerial = U shield, sheath maerial of shield = ( Sheath maerial - U center U shield) xYL=0。 Although the electric potential difference between shield and vessel wall, current flows through the gap between, but the current is measured, not does not affect the measurement result. Protected so that it will measure end, is not affected by hanging. Only container material really increased exposure to the sheath maerial, through the material to be tested, center and the sheath maerial to form between measured current, instrument to detect the current, produce output signal effectively. Rf admittance technology due to the introduction of outside capacitance measurement parameters, especially the resistance parameters, makes the instrument measuring signal SNR, greatly improve the resolution, accuracy and reliability of the instrument; The diversity of measurement parameters also effectively expand the instrument reliable applications. 8051 is a continuous measurement, look at the site application conditions to select different probes, is to meet the requirements of 8010 switch measurement, look at the site application conditions choose different probes, to meet the requirements. A tuning fork level switch radio frequency admittance switches

Beijing Sincerity Automatic Equipment Co., Ltd is one of the world’s leading and most-trusted suppliers to the relevant markets.

Beijing Sincerity Automatic Equipment Co., Ltd is one of the best provider in China offering online mass flow meter consultation and products to boost your u shape coriolis mass flow meter. Visit Sincerity Flow Meter and place your order now.

fork density meter manufacturer mass flow meter will help keep your rosemount vortex flow meter in a electromagnetic flow meter slurry state.

coriolis mass flow meter emerson needs not be tedious anymore with the application of . So getting the right mass flow meter can drastically promote tuning fork liquid density meter.