Level Transmitter Types
3000.00 USD

Описание продавца

A level sensor (hydrostatic level gauge/level transmitter/level sensor/water level sensor) is a pressure sensor that measures a level. Static input type liquid level transmitter (gauge) is based on the measured hydrostatic principle of proportional to the height of the liquid, USES the overseas advanced isolation diffusion silicon sensing element or sensitive ceramic capacitance pressure sensor, the static pressure is converted to electrical signals, after temperature compensation and the linear correction, converted into a standard electrical signals (usually 4 ~ 20 ma / 1 ~ 5 VDC). Divided into two kinds: one kind is contact, including single/double flange static pressure flange differential pressure transmitter, liquid level ball float liquid level transmitter, magnetic liquid level transmitter, the inputting type liquid level transmitter, electric ball float liquid level transmitter, electric float liquid level transmitter, capacitive liquid level transmitter, magnetostrictive liquid level transmitter, servo liquid level transmitter, etc. The second type is non-contact type, divided into ultrasonic level transmitter, radar level transmitter and so on. Hydrostatic INPUT LEVEL transmitter (liquid level meter) is suitable for petrochemical industry, metallurgy, electric power, pharmaceutical, water supply and drainage, environmental protection and other systems and industries of all kinds of medium level measurement. The delicate structure, simple adjustment and flexible installation provide convenience for users to use easily. 4~20mA, 0~ 5V, 0~10mA and other standard signal output methods can be selected by users according to their needs. The input liquid level transmitter uses hydrostatic principle to measure liquid level, which is an important application of pressure sensor. Special cable with ventilation catheter in the middle and special sealing technology are used to ensure the watertightness of the sensor, and make the reference pressure chamber communicated with the ambient pressure, so as to ensure the high precision and high stability of the measurement. The liquid level switch is a controller that keeps the water level constant by opening the water discharge or inlet valve according to the signal output of the liquid level sensor. It can also be said that the output of the liquid level switch is a switch signal. The liquid level switch should first determine the height of the liquid level and output the switch signal according to this height. The liquid level sensor converts the height of the liquid level into the form of electrical signals for output. We can process electrical signals such as PLC, data collector or professional display connected to output liquid level height. There is a liquid level switch and level sensor although the principle is the same. But the liquid level switch is the switch control circuit, and the liquid level sensor is equivalent to the voltage change, change the current with the circuit element. There are five types of sensors: 1. Pontoon level sensor The buoy type liquid level transmitter is a magnetic floating ball into a buoy, and the liquid level sensor is designed according to the principle of Archimedes buoyancy. The pontoon level transmitter uses the tiny metal film strain sensing technology to measure the liquid level, boundary or density. It can be set up by pressing the button on the spot when working. 2, floating ball type liquid level sensor Ball float liquid level transmitter ducts, the signal is measured by the magnetic floating ball, unit, the electronic unit, junction box and install a composition, the proportion of general magnetic float is less than 0.5, can float on the surface and move up and down along the measuring tube, intraductal equipped with measuring element, it can will be under outer magnetic liquid level measurement signal into the resistance of the signal is proportional to liquid level change, And the electronic unit is converted into 4~20mA or other standard signal output. The liquid level sensor is a modular circuit, which has the advantages of acid resistance, moisture resistance, shock resistance, corrosion resistance, etc. The circuit contains constant current feedback circuit and internal protection circuit, which can make the output maximum current not more than 28mA, so it can reliably protect the power supply and make the secondary instrument is not damaged. 3, static pressure type liquid level sensor The transmitter uses the liquid static pressure measurement principle to work, it generally uses silicon pressure transducer to measure the pressure into electrical signal, and then through the amplifier circuit amplification and compensation circuit compensation, and finally output with 4~20mA or 0~10mA current. Main technical parameters: Process: diffuse silicon ceramic capacitor sapphire capacitor optional. Split integral optional, range :0-- 0.5-- 200 meters, output: 4-- 20mA (2 wire system) Power supply: 7.5-- 36VDC recommended 24VDCBM-2100 /CBM-2700 input hydrostatic level meter is a reliable anticorrosion probe with ceramic measuring unit for level measurement of clean water, sewage and salt water. GY500 input split type liquid level transmitter adopts diffused silicon piezoresistive core,316 stainless steel structure, shell adopts isolation and explosion-proof design, the input level gauge is mainly suitable for river, underground water level, reservoir, water tower and container level measurement and control. Circuit using signal isolation amplification, frequency interception interference design (anti-interference ability, anti-lightning) overvoltage protection, current protection, impact resistance, anti-corrosion design. Main technical parameters: Measuring medium: water, oil, and other liquid pressure type: gauge pressure, absolute pressure (no default gauge pressure required) Measuring range: 0~300m intermediate measuring range optional comprehensive accuracy: 0.1%FS output signal: 4~20mA(two-line system), 0~5V, 1~5V, 0~10V(three-line system) Supply voltage: 12~36VDC medium temperature: -30~60℃ ambient temperature: -40~85℃ zero point temperature drift: ≤±0.05%FS℃ range temperature drift: ≤±0.05%FS℃ compensation temperature: 0~70℃ Safety overload: 150%FS Limit overload: 200%FS Sampling frequency: ≤2ms Load capacity :(current type)250~ 1425ω (voltage type)≥ 2kω Seal Grade: IP68 long-term stability: 0.1%FS/ year vibration impact: within the mechanical vibration frequency of 20Hz~1000Hz, the output change is less than 0.1%FS mechanical connection (threaded interface): input type (submersible type)] Functional features: good stability, full degree, zero long-term stability up to 0.1%FS/ year. In the compensation temperature range of 0 ~ 70 ℃, the temperature drift is lower than 0.1%FS, and it is lower than 0.3%FS in the whole allowable operating temperature range. With reverse protection, current limiting protection circuit, in the installation of positive and negative polarity reverse connection will not damage the transmitter, abnormal transmitter will automatically limit the current within 35MA. Solid structure, no moving parts, high reliability, long service life. Convenient installation, simple structure, economic and durable.