The principle and application scope of the externally mounted liquid level switch

The externally attached liquid level switch, also known as the externally attached ultrasonic liquid level switch, is a non-contact liquid level switch realized by ultrasonic technology. Non-contact detection instrument, the instrument measuring probe emits ultrasonic waves and detects its residual vibration signal in the container wall. When the liquid flows over the probe, the amplitude of the residual vibration signal will become smaller, and this change is detected by the instrument and outputs a switch signal. The externally mounted liquid level switch is a non-contact liquid level detection instrument combined with ultrasonic detection technology. With special probe design and non-contact detection, it is especially suitable for applications with hygienic requirements, high pressure, radioactivity, toxicity, corrosion and other special occasions. Its simple installation method and high protection level ensure that the whole machine can work in harsh environments for a long time. The instrument is easy to adjust and easy to operate. It is a very easy-to-use instrument. ↑The measurement diagram of the externally mounted liquid level switch The externally mounted liquid level switch adopts ultrasonic technology, and the measurement accuracy is not affected by the shape of the tank, the type of medium and the temperature of the medium, and it can still work stably in extreme environments. The product is installed outside the tank/pipe, only the metal sensor extends into the tank/pipe. Ultrasonic waves emitted by piezoelectric crystals are only transmitted within the metal sensor, which ensures the quality of ultrasonic signal transmission. When the liquid in the tank comes into contact with the sensor, the ultrasonic waves emitted by the piezoelectric crystal are suppressed. After the instrument processing unit detects this change, the output unit outputs an alarm signal. Since only the metal sensor is in the tank and there are no moving parts, the externally mounted liquid level switch requires little maintenance. The externally mounted liquid level switch can continuously monitor the liquid level. Equipped with multiple programmable relays for level switch or level control functions. Embedded level controllers reduce costs by replacing external control hardware. It is suitable for food cans, medical and hygienic cans and strong corrosive cans with strict hygiene requirements. The signal processing module adopts single chip control to effectively overcome the interference between high report, high and low report, and low report due to the simultaneous installation of one can. The interference caused by the explosion of condensed water in the tank and the flashing report caused by other electromagnetic interference. The externally attached liquid level switch can be widely used in the liquid level detection of various liquids. It is mainly used to monitor the height of the liquid level in the container and realize the high and low alarm function. Compared with the traditional liquid level switch, it does not contact the medium. This kind of measurement method not only has high measurement accuracy, but also does not need to open holes on the container wall, and does not need to be heated, so as to realize non-contact measurement control in the true sense. This measurement technology is not affected by medium density, dielectric constant, conductivity, reflection. Coefficient, pressure, temperature, precipitation and other factors. Externally mounted liquid level switches are irreplaceable especially in the measurement of toxic, highly corrosive, flammable and explosive liquids. Scope of application of Shaanxi Kaidi externally mounted liquid level switch Applicable factors require the container to be tested in spherical, vertical, horizontal and other shapes. The thickness of the container wall (the position of the measuring probe) is less than or equal to 60mm. The wall of the container (the position of the measuring probe) has no lining The tank wall of the layer or gas interlayer container (where the measuring probe is installed) is made of hard materials, such as carbon steel, 16MnR, 304, 316, glass fiber reinforced plastic, hard rubber, etc. Measured liquid The dynamic viscosity of the measured liquid medium is less than 90mPa s (cP) The temperature of the measured place is determined by the temperature of the tank wall at the bottom of the container (where the measuring probe is installed) and the temperature of the tank wall (where the measuring probe is installed). at (60℃～200℃). Ambient temperature The temperature at which the host is placed determines the selection of the instrument host, normal temperature type (-20℃～70℃), low temperature type (-40℃～70℃), ambient humidity (0%～95%) RH explosion-proof grade ExdIICT6 protection grade IP65, IP67 Shaanxi Kaidi Externally posted liquid level switch performance indicators Externally posted liquid level switch power supply DC 24V output signal Relay output (passive node) Relay capacity (DC 30V 6A), (AC 250V 6A) Repeatability error ±5mm measurable wall Thickness up to 60mm Container material Steel, stainless steel, glass, non-foaming plastic and other dense materials Can measure pure liquid, milky liquid, suspended liquid Ambient temperature -40℃～100℃, -60℃～200℃ Ambient humidity (0% ～95%) RH rated power 3W Electrical interface specification M20 x 1.5 Housing material Cast aluminum housing Protection class IP65, IP67 explosion-proof mark ExdIICT6 Weight 2 KG Dimensions Length 158mm x Width 112mm x Height 148mm Installation method
Guangdong Kaidi Energy Technology Co., Ltd. are maintaining a consistent bottom-line profit and that you've shown steady growth over the past few years.
Guangdong Kaidi Energy Technology Co., Ltd. attaches great importance to customers and assists them in achieving their demands.
While the productivity and efficiency benefits of automation are unequivocal for manufacturing level gauge, the need for skilled humans to operate, utilize and advance technologies is equally unmistakable.
It is essential to know the basic functioning of to help us understand the components and the part they play.
It is one of the best products available in the market today. level gauge is famous product in many oversees market.