Selection and Installation of Instruments for Industrial Circulating Cooling Water Treatment Facilities

Abstract: The selection and installation information of instruments for industrial circulating cooling water treatment facilities are provided by excellent flowmeter and flowmeter manufacturers and quotation manufacturers. The industrial circulating cooling water treatment facility is like the lifeline of the main process production. The normal operation of the circulating water treatment facility plays a vital role in the normal production of the main process and the safety of the maintenance equipment. And every aspect of water treatment is always associated with the corresponding instrument. More flowmeter manufacturers select models and price quotations. You are welcome to inquire. The following are the details of the selection and installation of industrial circulating cooling water treatment facilities. The industrial circulating cooling water treatment facility is like the lifeline of the main process production. The normal operation of the circulating water treatment facility plays a vital role in the normal production of the main process and the safety of the maintenance equipment. Each link of water treatment is always related to the corresponding instrumentation and automatic control technology. The instrument can continuously detect the parameters of each water system, and perform manual or automatic control according to these parameters, and coordinate the relationship between supply and demand, between various components of the system, and between various water treatment processes, so as to make various equipment and facilities more fully , Reasonable use; at the same time, the value measured by the detection instrument can be continuously compared with the set value, and when deviation occurs, it is adjusted immediately to ensure the quality of water treatment. In addition, the instrument also has the functions of continuous detection and alarm when the limit is exceeded, which is convenient for timely handling of accidents and is also a prerequisite for computer control. Therefore, automatic instruments play a very important role in industrial circulating cooling water treatment facilities. Instruments commonly used in industrial circulating water treatment facilities include level gauges, flow meters, thermometers, pressure gauges, conductivity meters, etc. This paper analyzes and discusses the selection and installation of the above-mentioned instruments, which can be used as a reference for practical projects. 2 Selection of various commonly used instruments in circulating water treatment facilities 2.1 Liquid level gauges Commonly used liquid level gauges include connector type, float type, ultrasonic level gauge, radar level gauge, and magnetic flip level gauge. The principle, characteristics and application scope of the above liquid level gauge are as follows. (1) The principle of the connector type liquid level gauge: ordinary glass tube liquid level gauge. Features: simple structure, low price, intuitive, suitable for on-site use, but easy to break, easy to be contaminated with dirt on the inner surface, difficult to read, inconvenient for remote transmission and adjustment. (2) Principle of floating ball liquid level gauge: put a hollow floating ball in the liquid. When the liquid level changes, the floating ball will produce the same displacement as the liquid level change. Mechanical or electrical methods can be used to measure the floating ball. displacement of the ball. Features: Accuracy is±(1~2)%, its output has switch control and continuous output. It is simple in structure and low in price, and is not suitable for high viscosity liquids. (3) Principle of ultrasonic level gauge: The interface between two media is measured by using the different properties of ultrasonic wave attenuation, penetration ability and acoustic impedance in gas and liquid.±0.5%. This type of instrument has high precision, fast response, no mechanical moving parts, high reliability, simple and convenient installation, non-contact measurement, and is not affected by the viscosity and density of liquids, but it is costly and difficult to maintain. (4) Magnetic flip level gauge Principle: It consists of two parts: a magnetic indicator and a floating ball. The magnetic indicator is composed of red and white magnetic flip columns and guard plates equipped with small magnets. When the floating ball equipped with magnetic steel moves up and down with the liquid, the beam magnetic field of the * magnet in the floating ball will turn the magnetic flip column 180°, when the liquid level rises, the turning column turns from white to red, and when the liquid level drops, the turning column turns from red to white, thus indicating the height of the liquid level. When the output needs to be transmitted, install a reed switch parallel to the magnetic indicator, which can realize the remote transmission of 4-20mA or 0-10mA current signal; with the liquid level alarm switch, the liquid level can also be realized. upper and lower limit alarms. Features: In addition to on-site instructions, it can also be equipped with remote transmitters, alarm switches, and control switches, with complete detection functions. The indication is novel, the reading is intuitive and eye-catching. The indicating mechanism is completely isolated from the measured medium, so it has good sealing performance, high reliability and safe use. Simple structure, convenient installation and low maintenance cost. Corrosion-resistant, no power supply, explosion-proof. (5) The basic principle of radar level gauge is similar to that of ultrasonic level gauge. Features: high precision, high reliability, easy to use, but the price is slightly higher than the ultrasonic level gauge.

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