Capacitor to detect liquid concentration

In this study, a capacitance-based detection system for measuring the concentration of transparent liquids was successfully designed and implemented.

Industry
Dec 06, 2025

Electrical Measurements to Detect Liquid Concentration

Quantity detection principle of known liquid in distilled water is based on immerging the interdigital capacitor in distilled water and observing changes of its capacity with quantity increment of

Industry
Apr 04, 2026

Capacitive Sensor : Working, Types, Circuit, Interfacing & It Uses

''A'' is the overlapping region of two capacitor plates. concentration difference & material selection as compared to other applications. Analog Type. High-Temperature Type. This is an electronic device used to detect solid (or) liquid targets exclusive of physical contact. Thus, for detecting these targets, this sensor emits an

Industry
Aug 20, 2025

A Capacitive Transparent Liquid Concentration Detecting

This system effectively meets the demands for transparent liquid concentration detection. Keywords: Concentration Detection, Capacitive Sensor, FDC2214, Transparent Liquid. 1.

Industry
Apr 08, 2026

(PDF) A portable and low-cost parallel-plate capacitor sensor for

A portable and low-cost design of parallel-plate capacitor sensor is proposed and investigated for detection of heavy and alkali metal ions concentration in liquid solution. The application of a thin and long-sided parallel PCB plate allows one to

Industry
May 17, 2026

Minimal microfluidic metamaterial sensor for concentration detection

The sensor was built on an FR4 substrate and incorporates an interdigital capacitor along with complementary split-ring resonators in a tank circuit configuration. The single-port sensor operates by canceling the reflection signal from the open end of the circuit using the input signal. Reports on the detection of liquid concentration have

Industry
Oct 16, 2025

The Liquid Concentration Measuring Instrument Based on

In order to accurately detect the concentration of brine, a new sensing technology based on capacitance sensing is adopted. Because the change of salt water concentration will cause the change of capacitance capacity, the circuit is designed to detect the change of capacitance capacity, and then the data is converted into 28 bit binary number and

Industry
Sep 16, 2025

The Liquid Concentration Measuring Instrument Based on

At the same time, through the ultrasonic and electronic scale to detect the liquid level and weight, using the method of multi-sensor fusion for comprehensive processing, the accurate brine

Industry
Feb 17, 2026

Electrical Measurements to Detect Liquid Concentration

Abstract: A special container is made to detect the liquid contents used in the semiconductor manufacturing process by electrical measurements in both static and dynamic

Industry
Jan 16, 2026

Design of an Instrument for Liquid Level Measurement and Concentration

Design and development of semicylindrical capacitor for measurement of liquid level is reported in . In Echo from the liquid surface and wire immersed in the liquid are analysed to detect changes in propagation speed. A similar analysis is carried out for the variation in liquid concentration by the addition of 10%, 20%, and 30% of the

Industry
Aug 24, 2025

Liquid Level Detection System Based on MSP430FR2512

Liquid Level Detection System Based on MSP430 CapTIvate Technology Joe Wang, Sal Ye ABSTRACT This application note introduces a system solution for liquid level detection using a capacitive touch MCU. It introduces the basic principles of capacitive touch to detect liquid level. Then it uses MSP430FR2533 capacitive

Industry
Oct 07, 2025

Wireless Capacitive Liquid-Level Detection Sensor

In this paper, a new method for the wireless detection of liquid level is proposed by integrating a capacitive IDC-sensing element with a passive three-port RFID-sensing architecture. The sensing element transduces

Industry
Sep 17, 2025

3D model of interdigital capacitor – exploded view. | Download

Download scientific diagram | 3D model of interdigital capacitor – exploded view. from publication: Capacitive sensor for quantity detection of known liquid present in distilled water | In this

Industry
May 30, 2026

Understanding Liquid Level Sensors: What is a Liquid Level

A liquid level sensor detects the level of liquid within a container. These sensors help monitor and control liquid levels accurately, which is crucial for preventing overflows, maintaining process efficiency. Thus, ensuring safety in various industries. In this context, one might ask, “What is a liquid level sensor?”.

Industry
Feb 20, 2026

Capacitive sensor for quantity detection of known

Quantity detection principle of known liquid in distilled water is based on immerging the interdigital capacitor in distilled water and observing changes of its capacity with quantity...

Industry
Mar 21, 2026

Wireless Capacitive Liquid-Level Detection Sensor Based on

In this paper, a new method for the wireless detection of liquid level is proposed by integrating a capacitive IDC-sensing element with a passive three-port RFID-sensing architecture. The sensing element transduces changes in the liquid level to corresponding fringe-capacitance variations, which alters the phase of the RFID backscattered signal. Variation in

Industry
Jun 20, 2026

Dual-sensing and dual-frequency microwave SRR sensor for liquid

The measurement of electromagnetic properties is widely used to determine of chemical and biological material , and microwave sensors are one of the devices used in this field.The measurement of samples dielectric characteristics is attractive due to fast testing, simple operation and possibility of transmitting the data to phone or computer wirelessly , .

Industry
Nov 29, 2025

The Liquid Concentration Measuring Instrument Based on

Fdc2214 is a common liquid level monitoring sensor, fdc2214 is a capacitive sensor, which changes the monitored liquid level, concentration and medium into the change of

Industry
Mar 26, 2026

Microwave gas sensing with a microstrip interDigital capacitor

This work presents new developments in the microwave transduction and its application to gas sensors. Microwave measurements were extended to reflection/transmission coefficients through the use of a microstrip interdigital capacitor design. A sensitive layer composed of commercial TiO2 nanoparticles was deposited on the sensor surface, in order to detect the ammonia target

Industry
Nov 03, 2025

A novel helical electrode type capacitance level sensor for liquid

Generally CLS works on forming capacitors in parallel with respect to liquid and air in a tank. Fig. 13 shows fabricated helical electrodes and Fig. 14 illustrates the detection of liquid level ''h'' by novel electrodes immersed Design of an instrument for liquid level measurement and concentration analysis using multisensor data

Industry
Sep 07, 2025

High Precision Liquid Level and Leak Detection Based on

Abstract: This paper reports on a miniaturized liquid level sensor, that is sensitive to very small changes in the liquid level, and thus can also be exploited for leak detection particularly for small-volume fluid reservoirs, where sensor size and detection precision are crucial factors. The sensing principle is based on measuring the time of flight of the ultrasound signal to and from liquid

Industry
Nov 11, 2025

Design of Liquid Level Sensor Based on Capacitance Detection

There are a lot of application requirements for liquid level measurement in engineering. At present, the formula of regular or uniform field is used in the calculation of the corresponding relationship between capacitance and liquid level of the capacitance liquid level sensor, which ignores the influence of the dispersion field on the capacitance distribution. There are some

Industry
Aug 28, 2025

Design of an Instrument for Liquid Level Measurement

Santhosh et al. used a capacitive sensor, an ultrasonic sensor, and a pressure sensor to measure the liquid level and variation in liquid concentration. A multisensor data fusion framework

Industry
Feb 09, 2026

Dual-sensing and dual-frequency microwave SRR sensor for liquid

The considered sensor advantages are including ɛ'' detection of liquid samples, high Q-factor, high sensitivity and compact. High-sensitivity microwave sensor based on an interdigital-capacitor-shaped defected ground structure for permittivity characterization real-time and non-intrusive detection of concentration and growth of

Industry
Dec 18, 2025

Detection challenges in quantitative polymer analysis

Keywords: detection, liquid chromatography, polymers, quantification. Article Related Abbreviations APCI. atmospheric pressure chemical ionization. While both detectors can be quantitative, meaning that their response is related to

Industry
Jun 06, 2026

Design, development and application of a real-time

For this purpose, a multisensor model comprising a capacitive level sensor (CLS), ultrasonic level sensor (ULS), and capacitance pressure sensor is used to acquire information of the liquid.

Industry
May 28, 2026

Microwave gas sensing with a Microstrip InterDigital Capacitor

In , Bailly et al. used a microstrip interdigital capacitor surrounded by a sensing layer of titanium dioxide (TiO 2 ) nanoparticles for the detection of ammonia concentration in the range from

Industry
Jun 07, 2026

portable and low-cost parallel-plate capacitor sensor for alkali

ions concentration in liquid solution. The application of a thin and long-sided parallel PCB plate allows one to measure the capacitors that can detect certain elements such as alkali and heavy metals ions, identifying variations of concentration, as well as finding the frequency characteristics of these ele-ments. The samples used in this

Industry
May 22, 2026

Capacitive and Non-Contact Liquid Level Detection Sensor

Electronics 2024, 13, 2228 3 of 17 This study proposes a novel design method for a non-contact capacitive liquid level sensor based on flexible IDT electrodes to further increase the sensitivity.

Industry
Apr 23, 2026

Non-contact Sensor for Measurement of Liquid Concentration based

An out-of-plane electric field distribution from a planar sensing capacitor (SC) is used for the noncontact sensor measurement of liquid concentration on a spacer.

Industry
Jun 20, 2026

Capacitive and Non-Contact Liquid Level Detection

Achieving accurate and high-sensitivity liquid level detection in medical instruments has always been a knotty task. In this paper, a high-precision, non-contact, flexible capacitive liquid level sensor is proposed,

Industry
May 23, 2026

Capacitive Sensor Working Principle | E. E. Eng.

Typically, a capacitor sensor is a kind of proximity sensor that uses the electrical field it creates to detect items close nearby. Although being limited to short ranges, usually less than 1 cm, a basic capacitive sensor has been commercially available for

Industry
Mar 13, 2026

(PDF) Low-Cost Capacitor Sensor for Detecting Metal

A portable and low-cost design of parallel-plate capacitor sensor is proposed and investigated for detection of heavy and alkali metal ions concentration in liquid solution. The application of a thin and long-sided parallel PCB plate allows one

Industry
Jun 13, 2026

Mechanically damaged capacitor leaked liquid

$begingroup$ In case somebody ever has to deal with such a mess in ancient or military surplus equipment: a) There seem to have been a few (very few) types of electrolytic capacitors in the 70s and earlier that had polychlorinated biphenyls added (far more common in non electrolytics!) b) so called wet slug tantalum types (uncommon in non-military/aerospace

Industry
Mar 16, 2026

Capacitive Sensors | Detection Method and Function

The use of a capacitive sensor is recommended if the object being detected is made from plastic, mineral, glass, wood, or paper, or is an oily or aqueous liquid, or a granulate or a powder, and the required detection distance is within a range of a few millimeters. Capacitive sensors detect both metallic and non-metallic target objects

Industry
Jul 18, 2025

Capacitive Sensor Explained | Different Types and Applications

A capacitive sensor is an electronic device that can detect solid or liquid targets without physical contact. To detect these targets, capacitive sensors emit an electrical field from the sensing end of the sensor. Any target that can disrupt this electrical field can be detected by a capacitive sensor.

Industry
Jun 18, 2026

Capacitive and Non-Contact Liquid Level Detection Sensor

Achieving accurate and high-sensitivity liquid level detection in medical instruments has always been a knotty task. In this paper, a high-precision, non-contact, flexible capacitive liquid level sensor is proposed, aiming to apply capacitive sensors in test tube liquid level measurement and improving the sensitivity of real-time liquid level sensors. The

Industry
Oct 27, 2025

Electrical double layer-based iontronic sensor for detection of

In recent years, chemical sensors, as a new kind of sensor, have the ability of concentration detection and electrolytes identification of special compounds and have gained huge attention for application in detection of the salinity , biological ionic liquid, and assistance for disabled people who lose their sense of taste, etc. Different from the spectrometry analysis

Industry
Feb 14, 2026

Design of Liquid Level Sensor Based on Capacitance Detection

There are a lot of application requirements for liquid level measurement in engineering. At present, the formula of regular or uniform field is used in the calc.

6 Frequently Asked Questions about “Capacitor to detect liquid concentration”

Can a capacitive sensor measure liquid level by immersion?

In the present study a real-time capacitive sensor based on a capacitance step method is designed, developed and applied on measuring the liquid level by immersion. The capacitive sensor consists of two electrodes from copper plated phenolite plates separated by a gap distance and mounted inside a non-conductive storage tank.

How does a capacitive sensor work?

The principle of sensor operation is based on the overall block diagram of the real-time capacitive sensor system shown in Fig. 5. During the measurement, when the sensor electrodes are immersed in the liquid, the liquid level is linearly converted to the corresponding capacitance signal at the same time.

Can a capacitive sensor detect water level?

Chetpattananondh et al. developed a low-cost interdigital capacitive sensor for water level measurement. The experimental results confirm that the sensor has high sensitivity of linear character. Qurthobi et al. manufactured a high impedance capacitive sensor for detecting the water level.

Which formula is used to calculate the relationship between capacitance and liquid level?

At present, the formula of regular or uniform field is used in the calculation of the corresponding relationship between capacitance and liquid level of the capacitance liquid level sensor, which ignores the influence of the dispersion field on the capacitance distribution.

How does capacitive sensor calibration work?

The capacitive sensor calibration was realized from the voltage values obtained at different liquid levels, thus identifying the curve that best corresponds to the behavior of the results, and their respective behavioral equation (Eq. 4), where x represents the height of the liquid level on real-time, and V is the output voltage.

What is a capacitive level sensor?

Muskett L (2013) Capacitive level sensor: for non-contact detection of challenging fluids (sensors). Des News 68 (6):562 Jin B, Zhang Z, Zhang H (2015) Structure design and performance analysis of a coaxial cylindrical capacitive sensor for liquid-level measurement.

Smart Energy & Digital Insights

Ready to Transform Your Energy?

Contact our team for a free feasibility study and custom quote for your smart energy or digitalization project.