The oil-water interface meter is an instrument used for measuring the oil-water interface between two liquids. It is an instrument that can be used to continuously measure changes in the oil-water interface. Using the principle of specific gravity of substances, a substance that floats in water and sinks in oil is selected to make the oil-water interface meter. It has the advantages of stable and reliable long-term operation, high sensitivity, good linearity, high temperature resistance, and high pressure resistance.

　　According to the different measurement principles of interface instruments, they can be roughly divided into several types: magnetic, radio frequency admittance, shortwave absorption, capacitive, servo, etc. Among them, magnetic interface instruments are divided into: reed type magnetic control interface instruments, magnetostrictive interface instruments, and other forms.

　　The oil-water interface instrument product adopts the principle of microwave oil-water measurement. The interface instrument does not have mechanical movable parts during operation, and the overall instrument has a rigid structure with high measurement resolution, stable and reliable operation, good repeatability of measurement values, and maintenance free operation. The advantages of the two liquid interface measurement technology are obvious, and it surpasses and surpasses the differential pressure buoyancy instrument in terms of oil-water interface measurement accuracy and medium applicability.

　　In oilfield production, oil-water separation is an extremely important link in crude oil processing. After the crude oil enters the combined station, it needs to go through processes such as sedimentation and electrostatic separation, and the control of the oil-water interface is the key to the separation effect. Nowadays, specialized oil-water interface devices are commonly used in various oil fields to monitor the processing process and achieve the goal of automated control.

　　What is a tuning fork level switch?

　　A tuning fork is a new type of level control switch, which mainly relies on the principle of vibration of the tuning fork to measure the height of the level. The detection circuit judges the change in frequency and outputs a switch signal. The unique fork body design and inherent vibration characteristics of the tuning fork level switch can ensure the automatic clearing function of the tuning fork and prevent material hanging to a greater extent.

　　The tuning fork switch is designed based on the damping effect and piezoelectric effect of the medium on the vibration of the tuning fork. The sensing part for detecting the material (liquid) level is composed of the tuning fork, which has a fixed vibration frequency and amplitude. When the tuning fork is subjected to the damping effect of the medium, the vibration stops and the control circuit drives the relay to send a switch signal.

　　The amplitude of the tuning fork level switch is adjustable, making it easy to measure materials of different states and densities. It is suitable for fixed-point detection, alarm or control of solid material levels in various silos and liquid levels in various containers. The tuning fork level switch has strong adaptability and density does not affect measurement.

　　The tuning fork level switch has the advantages of long service life, stable performance, safety and reliability, as well as strong adaptability (different electrical parameters and densities of the measured medium do not affect measurement), no need for calibration (no matter what medium is measured, on-site calibration is not required), and maintenance free. It is widely used in the process control of level in industries such as metallurgy, building materials, chemical, light industry, and grain.

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