Issues with RF admittance level gauges?
Thread Content
This post was last edited by wwxxss_1 on 2009-9-23 07:47. We are currently using a radio frequency admittance level gauge; sometimes it shows around 2.7 meters and other times around 3.4 meters. What could be the reason for this? I would appreciate your advice.
A radio frequency admittance level gauge should be installed in areas where the liquid level fluctuates little; if it is installed in areas with large level fluctuations, the measured level fluctuations will also be significant.
The signal fluctuations of radio frequency admittance level gauges are indeed quite large, whereas servo-type level gauges are relatively stable.
RF admittance level gauges are prone to interference; they should be installed in areas where there is less interference with the liquid level. If there is significant zero drift, they need to be recalibrated
I. Is the debris screen of the radio frequency admittance level gauge clogged with residues, resulting in a difference in liquid levels before and after the screen? II. The radio frequency admittance level gauge controller utilizes high-frequency technology; an electronic circuit generates a low-power radio frequency signal at the probe. The probe, acting as a sensitive element, feeds back to the electronic circuit the signal changes caused by the dielectric constant of the liquid. These changes include variations in capacitance and conductivity. Thus, the electronic circuit processes signals representing the combined changes in capacitive reactance and impedance. Phase detection technology is used to detect such changes, which are then processed to control the output of the relay. The reasons for inaccurate measurements may be changes in the concentration, purity, etc. of the liquid being measured, or problems with certain components of the device. III. The installation location of the radio frequency admittance level gauge is inappropriate, with many interfering factors.
The concentration changes, but the variation is small; it is a liquid that is being measured, and the liquid level remains largely stable.
If liquid splashes onto the sensing rod, a false level will be displayed
Mainly, it is placed on a liquid surface that can only move up and down relatively smoothly; it cannot be placed in areas with large fluctuations in the liquid surface
Mainly, it is placed on a liquid surface that can only move up and down relatively smoothly; it cannot be placed in areas with large fluctuations in the liquid surface