Things to Know Before Using RF Admittance Level Switches
The radio frequency admittance level switch, also known as the radio frequency admittance level meter, is a radio frequency admittance measurement technology developed based on the capacitance switch measurement technology. The capacitance value between the probe and the storage tank changes due to changes in the medium. When this change value reaches the set value of the switch, the switch signal output is converted, and the alarm bell, electromagnetic valve, or other low-power equipment can be operated to alarm and measure the material level. Due to its evolution as a capacitive switch, it can overcome the shortcomings of capacitive level gauges and is widely used in industrial level measurement such as petroleum, chemical, metallurgical, power, food, papermaking, building materials, etc. It is highly trusted by users. However, radio frequency admittance level gauges are not versatile instruments. In order to use this level gauge reasonably, familiarizing oneself with its advantages and disadvantages can better discover the appropriate space for use.Advantages of RF admittance:1. High cost-effectivenessThe strong functionality and relatively low price of the product make it more cost-effective compared to similar instruments and meters2. Minimal measurement errorDue to the fact that the radio frequency admittance level switch is not affected by hanging materials and environmental changes, its measurement results are more accurate. Moreover, the components of the radio frequency admittance level switch have no moving parts during the measurement process, so there is no mechanical damage. This makes the radio frequency admittance level switch unnecessary for regular maintenance, high accuracy, and long service life.3. Wide universalityThe radio frequency admittance material level switch can withstand high temperature, corrosion, explosion-proof, anti hanging, material impact, friction, and is easy to maintain. This product is widely used in the measurement of coal ash, solid particles, and adhesive materials in petrochemical industry, power plant dust removal and ash hopper, storage bin, and measurement of coal ash. Disadvantages of RF admittance:Due to the influence of its measurement principle and product structure, the RF admittance level switch may have the following drawbacks in use:1. There are requirements for the dielectric constant of the mediumThe radio frequency admittance level meter requires the measured medium to have electrical characteristics, and can only measure the dielectric constant of the medium ≥ 1.6 in order to achieve measurement2. Need to work in a medium stable environmentDue to the need to calibrate the parameters of the RF admittance level switch based on the medium to be measured after installation, this instrument cannot measure smoothly in a working environment where the medium is frequently changed.3. Cannot be used in compact measurement environmentsDue to the anti hanging product characteristics of the RF admittance material level switch, the probe needs a certain length and cannot be too short. It needs to be used in situations where the insertion depth is ≥ 250mm, so it is not suitable for compact measurement environments.