Capacitive Level Gauge

Capacitive level gauges are suitable for continuous detection of various liquids under harsh conditions such as high temperature and pressure, strong corrosion, easy crystallization, and blockage. The capacitive level gauge is suitable for measuring the water level of sewage, acid-base solutions, and boilers. The entire machine has no movable or elastic components, is impact resistant, easy to install, has high reliability, and accuracy. It can replace traditional float type, input type, differential pressure type liquid level transmitters in various applications. Capacitive level gauges, whether rod or cable, are made of PTFE material, including probes. As long as the rod, cable, and probe are made of stainless steel, they are input level gauges. It is precisely because they are all made of tetrafluoroethylene that strong corrosive liquids such as acids and alkalis are particularly used for measurement.

 

Technical Parameter

 

Working principle of capacitance level gauge

The working principle is based on radio frequency (RF) capacitor technology. Apply a radio frequency to the probe and determine through continuous analysis
The impact caused by the surrounding environment. Because all materials have a dielectric constant and their conductivity is different from that of air, when the probe
The total impedance changes when in contact with the material due to small capacitance offsets. Because the energized probe and container wall are composed of
The two plates of the capacitor, the insulation of the probe, and the surrounding air become dielectric materials. When the air (with a dielectric constant of 1.0) is replaced by any other material (with a dielectric constant>1), the change in capacitance value causes a change in impedance. This impact is affected by
After circuit measurement, it is compared with the reference benchmark established by the sensitivity device setting (circuit).
The capacitance level gauge is suitable for measuring the liquid level (material level) of conductive and non-conductive liquids (solids) under pressure in pressurized containers. Adopting a two wire system for power supply, outputting 4-20mA and overlaying a HART digital signal, while also displaying the liquid level locally. It can convert various changes in liquid level parameters into standard current signals and transmit them to the operating room for centralized display, alarm or automatic control by secondary instruments or computer devices.
The capacitance level gauge can be used for continuous detection of liquid level, material level, or material level under special conditions such as high pressure, high temperature, strong corrosion, easy crystallization, anti blocking, anti freezing, and solid powder and granular materials. It can be widely used for detection and control in various industrial processes.

 

Product Features

Online tuning fork density meter

Capacitive level gauge
Easy installation and debugging
One click calibration
Strong adaptability
Anti adhesion
Multiple signal output

Characteristics of capacitance level gauge products
4-20mA/RS-485 multiple signal outputs, convenient for different system configurations.
The capacitance level gauge is suitable for measuring the level of high-temperature and high-pressure containers, and the measured value is not affected by the temperature, specific gravity, shape, and pressure of the measured liquid. It also provides comprehensive overcurrent, overvoltage, and power polarity protection.
Anti adhesion
Advanced anti adhesion circuit design can eliminate material adhesion and generate false error signals
Strong adaptability
It can detect solid and liquid materials in situations of high temperature, high pressure, large dust, and high viscosity, without being affected by the dielectric constant of the tested medium
One click calibration
Due to the use of digital circuits, users can complete calibration at once in an empty warehouse state
Easy installation and debugging
The fully sealed integrated installation structure has no mechanical movable parts, high reliability, and is basically maintenance free. Once installed, there is no need for multiple debugging.

 

Product Details

M25 * 1.5 explosion-proof electrical interface
High quality aluminum alloy shell surface sprayed with plastic, with a protection level of IP67
PTFE anti-corrosion material
Dual wire transmission 4-20m output

 

Product Classification

Threaded type

Installation method: G1 "thread

Measuring rod material: stainless steel/stainless steel+PTFE

Flange high-temperature type

Installation method: DN25 DN50 flange measuring rod Material: stainless steel/stainless steel+PTFE

Stainless steel cable type

Soft pole can measure up to 20 meters

Measuring rod material: stainless steel/stainless steel+PTFE

 

Product Application

Widely used

Not affected by the dielectric constant and temperature of the tested medium

Chemical raw materials (liquid) Chemical raw materials (solid) Plastic particles

Petroleum pulp medicine

 

Capacitive level gauges are widely used in various fields such as petroleum, chemical industry, metallurgy, power, papermaking, pharmaceuticals, etc. Chemical factories detect the level of chemical raw materials such as polyester, spandex, acid, alkali, etc; Environmental protection: detection of sewage level; Boiler factory: detect the liquid level of the medium in the pressure vessel; Hydraulic machinery: detection of lubricating oil level; Grain department: testing the level of edible oil; Oilfield: Testing finished oil

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