RF Capacitive Level Gauge

RF Capacitive Level Gauge Product Overview
RF Capacitive Level Gauge Series Intelligent Capacitive Level Transmitter RF Capacitive Level Gauge is suitable for liquid level materials of conductive and non-conductive liquids and solids under pressure in pressure vessels. bit measurement. The radio frequency capacitive liquid level gauge uses a two-wire system for power supply, outputs and superimposes digital signals. At the same time, the radio frequency capacitive liquid level gauge uses a two-wire system for power supply, outputs and superimposes digital signals, and can display the liquid level locally. . The two-wire isolation conversion technology of sensor signals is adopted to completely isolate the isolated signal output from the on-site analog signal ground wire. Liquid level can be displayed locally. The two-wire isolation conversion technology of sensor signals is adopted to completely isolate the isolated signal output from the on-site analog signal ground wire. Ordinary capacitive level transmitter is a capacitive liquid level detection instrument. It can convert changes in various liquid level parameters into standard current signals and transmit them to the operating room remotely for centralized display by secondary instruments or computer devices. , alarm or automatic control.
A series of ordinary radio frequency capacitive liquid level meters are capacitive liquid level detection instruments. It can convert changes in various liquid level parameters into standard current signals and transmit them to the operating room remotely for secondary instruments or computer devices. Perform centralized display, alarm or automatic control. Combined with the user's specific process conditions, equipment structure and usage requirements, through flexible combinations of the material structure and installation methods of the liquid level gauge, it can be used under special conditions such as high pressure, high temperature, strong corrosion, easy crystallization, anti-clogging and anti-freezing, as well as solid powdery granular materials. The continuous detection of liquid level, material level or material level can be widely used in detection and control in various industrial processes.
2. Structural Selection of Radio Frequency Capacitive Liquid Level Gauge
Single electrode equipment suitable for the medium to be measured is a metal container, a medium with good conductivity.
The equipment for the cable-type double electrode is suitable for the medium to be measured, which is a non-metallic container, a medium with good conductivity or an electrode with a length greater than 100%.
Threaded connection*,*/etc.
Flange connection flange installation -
High pressure flange three-hole flange, lens pad.
Threaded installation
Flange type
Flexible cable type
Product features of three radio frequency capacitive liquid level gauge
●Various types of conductive medium liquid level measurement in pressurized vessels Acid, alkali, salt concentration, etc.
●Level measurement of non-conductive liquids, oils, solvents, etc.
●Solid fly ash, cement
●Maximum working pressure of liquid ammonia in high-pressure vessels
> ●Working medium temperature ℃ electrode
●On-site display + transmission + digital data signal
●You can use three buttons to adjust the zero point, full scale damping time, data recovery and other functions on site to completely replace the handheld operator
/> ●Liquid level detection is basically not affected by changes in process conditions. The buoyant differential pressure isotope liquid level gauge is closely related to the importance of the medium in detection. Severe changes in the gas and liquid phase media will cause additional errors in the detection results
●Wide adaptability to the specific characteristics of the detection object, Specially customized to adapt to liquid level detection under a variety of harsh conditions
●Easy to install. A high-pressure liquid level meter working at the same time weighs less than two kilograms, which is a few tenths of the weight of a high-pressure float level meter. .
Technical indicators of four radio frequency capacitive liquid level gauges
●Measurement range rod type~cable type~any choice within the range
●Within the accuracy range, the measured medium is crystallized, scaled or has high viscosity It will have a certain impact on the measurement accuracy
●The maximum working pressure is used as the medium temperature ℃ electrode
●The working voltage output signal~superimposes the digital signal load resistance~
●The applicable medium is non-corrosive to PTFE Any medium
●When matched with the secondary meter, the secondary meter comes with a two-wire power supply
●The installation thread is below, pressure pad type, and below pressure lens type. or
● Structural connection parts are made of chrome-plated parts, etc.
Recommended measurement range
ф single electrode, ф single electrode
Coaxial double electrode фф/ф
ф single electrode, ф double electrode
Five RF capacitive liquid Working Principle of Level Meter
The detection principle of the liquid level meter is capacitance conversion type. Its principle is that two parallel plates that are parallel to each other, very close to each other, and insulated from each other form a capacitor. The capacitance of the capacitor changes with the change of the liquid level. The change in capacitance corresponding to the change of the liquid level is converted by the transmission circuit. It is a standard current signal and can be output to a secondary meter to display the corresponding liquid level.
Basic calculation formula
In the above formula, the dielectric constant of the measured medium is calculated as a constant, △ is multiplied deep into the surface of the medium, and the distance between the two poles.
In the above formula, the invariants are ignored, and the conversion formula can be simplified as the only thing that causes the change is the up and down changes in the liquid level, and the change has nothing to do with temperature and pressure. The capacitive liquid level structure is composed of a transmission circuit structure, a connecting piece, a probe rod, etc.