Shanghai manufacturer of capacitive level gauge

Shanghai manufacturer of capacitive level gauge

★ Overview

Its good structure and installation method can be applied to high temperature, high pressure, strong corrosion, easy crystallization, anti blocking, anti freezing, and solid powder and granular materials.

It can measure the liquid level of highly corrosive media, high-temperature media, and sealed containers, regardless of the viscosity, density, and working pressure of the media.

The SC-700 capacitive level gauge fundamentally solves the influence of factors such as temperature, humidity, pressure, and material conductivity on the measurement process, thus possessing excellent anti-interference and reliability. Capable of measuring highly corrosive liquids such as acids, bases, salts, wastewater, etc. Capable of measuring high temperature and high pressure media; Process temperature -40~600 ℃; The individual intelligent integrated capacitance level gauge with a process pressure of -0.1 to 4.0 MPa has a two-point on-site calibration technology that provides convenience for users to easily use the product. The probe and transmitter are divided into two parts, and the shielded cable connecting the two can reach a length of up to 1 kilometer. It can be installed in extremely harsh environments, especially suitable for high temperature, vibration, corrosion, danger, and situations that require remote setting. Transmit the liquid level change to the on-site indicator to indicate the actual height of the liquid level. And equipped with liquid level alarm and liquid level remote transmission device. The liquid level alarm can achieve control of the upper and lower limit values of the liquid level, limit alarm, and accident interlocking. The liquid remote transmission device can linearly convert liquid level changes into DC 4-20mADC current signals, achieving remote liquid level indication and control recording. The liquid level gauge has explosion-proof and intrinsic safety protection performance. The whole machine is made of wear-resistant materials. Therefore, it has corrosion resistance function.

Shanghai manufacturer of capacitive level gauge

★ principle

The SC-700 capacitive liquid level gauge measures the height of the liquid level by measuring the change in capacitance. It is a metal rod inserted into a liquid container, with the metal rod serving as one pole of the capacitor and the container wall serving as the other pole of the capacitor. The medium between the two electrodes is liquid and the gas above it. Due to the difference between the dielectric constant ε 1 of the liquid and the dielectric constant ε 2 on the liquid surface, such as ε 1>ε 2, when the liquid level rises, the total dielectric constant value between the two electrodes of the capacitive level gauge increases, resulting in an increase in capacitance. On the contrary, when the liquid level drops, the value of ε decreases and the capacitance also decreases. So, a capacitive level gauge can measure the level of liquid by the change in capacitance between two electrodes. The sensitivity of a capacitive liquid level gauge mainly depends on the difference between two dielectric constants, and only constant values of ε 1 and ε 2 can ensure accurate liquid level measurement. Due to the conductivity of the measured medium, the metal rod electrode is covered with an insulation layer. Capacitive level gauges have a small volume, are easy to achieve remote transmission and adjustment, and are suitable for measuring liquid levels in corrosive and high-pressure media.