How do you calculate how many tons of steam vortex flowmeter?
The measurement of steam vortex flowmeter includes three important parameters: pressure, temperature and frequency.
View MoreAn explosion-proof electric heating liquid level meter is an instrument used to measure liquid level.
1. Overview of explosion-proof electric heating liquid level meter
An explosion-proof electric heating liquid level meter is an instrument used to measure liquid level. Its design complies with explosion-proof standards and is suitable for use in flammable and explosive places. It usually consists of sensors, displays, control units and related accessories, and can be used in various industrial applications, such as petrochemical, electric power, metallurgy, food, pharmaceutical and other industries. The principle of the electrothermal liquid level meter is to use the resistance change of the electric heating element to measure the liquid level. When an electric heating element is immersed in a liquid, its resistance changes in proportion to the liquid level. By measuring the change in resistance, the liquid level can be accurately measured.
2. Working principle of explosion-proof electric heating liquid level meter
The working principle of electric heating liquid level meter is based on the relationship between the resistance of the electric heating element and the temperature. When a heating element is immersed in a liquid, it absorbs heat and heats up, causing its resistance to increase. Due to the thermal conductivity of liquids, the temperature of an electric heating element immersed in a liquid will be affected by the temperature of the liquid. As the liquid level rises, the length of the heating element immersed in the liquid increases, and its resistance also increases. By measuring the resistance change of the electric heating element, the liquid level change can be deduced.
Explosion-proof electric heating liquid level gauges usually use a bridge circuit to measure the resistance change of the electric heating element. A bridge circuit contains four resistors, one of which is a heating element and the other three are resistors of known value. By measuring the output voltage of the bridge circuit, the value of the resistance change of the electric heating element can be obtained, thereby deducing the liquid level change.
3. Classification of explosion-proof electric heating liquid level gauges
Explosion-proof electric heating liquid level gauges can be divided into the following categories according to different parameters and characteristics:
By measurement Method classification:
Single-point liquid level meter: only measures the liquid level at one point, suitable for simple liquid level monitoring applications. Continuous liquid level meter: It can continuously measure changes in liquid level and is suitable for applications that require real-time monitoring of liquid level.
Classification by explosion-proof level:
Exd explosion-proof level: suitable for places with an explosion-proof level of Exd. Exia explosion-proof grade: suitable for places with Exia explosion-proof grade.
Classification by sensor material:
Stainless steel sensor: highly corrosion-resistant and suitable for most applications. Titanium alloy sensor: more resistant to high temperatures and corrosion, suitable for highly corrosive environments. Hastelloy sensor: resistant to high temperature, strong acid and alkali, suitable for extremely harsh environments.
Classification by output mode:
Analog output: output 4-20mA current signal or 0-5V voltage signal. Digital output: Output RS485, Modbus and other digital protocol signals. Switch output: output high and low level signals for controlling alarms or switches.
4. Price factors of explosion-proof electric heating liquid level gauge
The price of explosion-proof electric heating liquid level gauge is affected by many factors, mainly including:
Measurement range : The larger the measurement range, the higher the price. Accuracy: The higher the accuracy, the higher the price. DefendExplosion level: The higher the explosion-proof level, the higher the price. Sensor material: The higher the sensor material, the higher the price. Output method: The more complex the output method, the higher the price. Brand: Well-known brands of electric heating liquid level gauges usually have higher prices. Quantity: Prices are usually better when purchased in bulk.
Generally speaking, the price of entry-level explosion-proof electric heating liquid level gauges ranges from a few hundred yuan to a thousand yuan, while products with more complex functions, higher accuracy, and higher explosion-proof levels may cost several yuan. Thousands of dollars or even tens of thousands of dollars.
5. Purchasing guide for explosion-proof electric heating liquid level meter
When purchasing an explosion-proof electric heating liquid level meter, you need to consider the following factors:
Application scenario: According to the application The scene determines the required measurement range, accuracy, explosion-proof level and other parameters. Media type: Choose the appropriate sensor material according to the media type to avoid corrosion and damage. Ambient temperature: Select appropriate sensors and control units based on the ambient temperature. Installation method: Choose an electric heating liquid level gauge suitable for the installation method, such as flange installation, thread installation, etc. Output mode: Select the output mode suitable for receiving signals, such as analog output, digital output, switch output, etc. Brand reputation: Choose a reputable brand to ensure product quality and after-sales service.
6. Application of explosion-proof electric heating liquid level meter
Explosion-proof electric heating liquid level meter is used for liquid level measurement in flammable and explosive places, such as:
Petroleum Chemical industry: measuring liquid levels in storage tanks, reactors, separators and other equipment. Electric power industry: measuring liquid levels in transformer oil tanks, cooling pools and other equipment. Metallurgical industry: measuring liquid levels in blast furnaces, converters, electric furnaces and other equipment. Food industry: Measuring liquid levels in storage tanks, fermenters, filling equipment and other equipment. Pharmaceutical industry: measuring liquid levels in reactors, filter tanks, filling equipment and other equipment.
7. Maintenance of explosion-proof electric heating liquid level gauge
In order to ensure the normal operation of explosion-proof electric heating liquid level gauge, regular maintenance is required, which mainly includes:
Clean the sensor: Clean the dirt and impurities on the sensor regularly to avoid affecting the measurement accuracy. Check the connection cable: Check whether the connection cable is loose or damaged to avoid malfunction. Calibrate instruments: Calibrate instruments regularly to ensure measurement accuracy. Check the explosion-proof performance: Check the explosion-proof performance regularly to ensure safety and reliability.
The explosion-proof electric heating liquid level gauge is an important industrial instrument, which plays an irreplaceable role in many fields. Choosing a suitable explosion-proof electric heating liquid level gauge and performing regular maintenance can ensure its long-term stable and reliable operation and provide guarantee for production safety.
The magnetic inductive flowmeter industry, these are successful cases with comparable and reference value.
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View MoreHangzhou Economic Development Area,Hangzhou 310018,China