Table of Contents
What is water stage sensor?
How does the water degree sensor work?
Where to make use of water level sensors?
What are the advantages of water stage sensors?
What are the types of water degree sensors?
Magnetic flap degree gauge
Optical water degree sensor
Capacitance liquid level sensor
Hydrostatic degree transmitter
Tuning fork level sensor
Diaphragm liquid stage sensor
Float water level sensor
Ultrasonic liquid degree sensor
Radar level gauge
Conclusion
What is water degree sensor?
Water degree sensor is a device that measures the excessive or low level of a liquid in a fixed vessel. According to the strategy of liquid degree measurement, there are two types of contact and non-contact. What we call enter water degree transmitter is a contact measurement, which converts the height of liquid degree into electrical sign output. It is a widely used water degree transmitter at current.
Various stage sensors
How does the water level sensor work?
The working principle of the water degree sensor is that when it is positioned into the liquid to be measured at a sure depth, the stress on the front surface of the sensor is converted into the liquid degree top. The calculation method is Ρ=ρ.g.H+Po, where P is the sensor floor pressure, ρ is the density of the liquid to be measured, g is the native acceleration of gravity, Po is the atmospheric stress on the floor of the liquid, and H is the depth of the sensor dropped into the liquid.
Where to make use of water stage sensors?
Uses of water level sensors embrace the following purposes.
Water degree measurement in swimming pools and tanks
Water degree measurement in rivers and lakes
Marine water level measurement
Level measurement of acid and alkaline liquids
Oil degree measurement of oil trucks and mailboxes
Swimming pool water degree management
Tsunami warning and sea degree monitoring
Cooling tower water level management
Sewage pump water level control
Liquid degree remote monitoring
What are the advantages of water degree sensors?
Simple construction: no movable or elastic elements, extremely dependable, no regular maintenance throughout use. Simple and straightforward to operate.
Easy set up: When utilizing, first join one finish of the wire appropriately, then put the other end of the water level probe into the solution to be measured.
Range optionally available: It can measure the water degree within the vary of 1-200 meters, and other measurement ranges can be customized.
Wide vary of software: It is appropriate for liquid degree measurement of excessive temperature and strain, sturdy corrosion, high air pollution and other media.
Wide vary of measuring medium: from water, oil to excessive viscosity paste can be measured with high accuracy, and the temperature compensation vary is wide, not affected by the blistering, deposition and electrical traits of the measured medium.
Long service life: basic liquid level sensor can be used in a traditional surroundings for 4-5 years, in a harsh setting can be used for 2-3 years.
Powerful: could be instantly connected to the digital show desk real-time show values, may additionally be connected to quite lots of controllers to set the higher and lower limits to manage the amount of water in the container.
Accurate measurement: built-in high-quality sensors, high sensitivity, quick response time, precisely reflect the refined adjustments in the flow or static liquid stage, high measurement accuracy.
Various varieties: The liquid level sensor has numerous structure designs similar to enter type, straight rod type, flange type, threaded kind, induction kind, screw-in type, float sort, etc. It can meet the measurement needs of various places.
What are the types of water degree sensors?
Here are 9 types of liquid level sensors on your reference.
Display of varied liquid stage sensors
Magnetic flap degree gauge
Magnetic flip level gauge (also known as magnetic float degree gauge) based mostly on the buoyancy precept and magnetic coupling developed. When the liquid degree in the measured container rises and falls, the magnetic float within the physique tube of the extent gauge additionally rises and falls. The everlasting magnetic steel in the float is transferred to the magnetic flip column indicator through magnetic coupling, driving the pink and white flip column to show 180°. When the liquid level rises, the flip column adjustments from white to red, and when the liquid level drops, the flip column changes from red to white. The red and white junction of the indicator is the precise peak of the liquid stage contained in the container, in order to comprehend a clear indication of the liquid degree.
Magnetic flap stage gauge image
Characteristics:
Wide range of utility, set up of varied varieties, suitable for any medium degree, interface measurement.
The measured medium is completely isolated from the indicating construction, with good sealing performance, leakproof, and high reliability for liquid level measurement underneath high stress, excessive temperature and corrosion situations.
Set field indication, remote transmission, alarm management about one and can be adjusted freely, fully useful dual-color indication with luminous, continuous and intuitive, eye-catching, giant measurement vary, remark direction could be arbitrarily changed.
Good vibration resistance, can adapt to the scenario of liquid degree fluctuation simple structure, handy set up, low maintenance cost.
With nice magnetic metal corrector, on-site adjustment of technical parameters.
Optical water stage sensor
Optical sensors are solid-state. They use infrared LEDs and phototransistors, that are optically coupled when the sensor is within the air. When the sensing head is immersed in a liquid, the infrared light escapes, inflicting the output to change. These sensors can detect the presence or absence of virtually any liquid. They are insensitive to ambient light, unaffected by bubbles in air, and unaffected by small air bubbles in liquids. This makes them helpful in situations the place modifications in condition should be recorded rapidly and reliably, and where they will operate reliably for lengthy periods with out maintenance.
Optical water degree sensor image
Advantages: non-contact measurement, excessive accuracy, fast response time.
Disadvantages: Do not use in direct sunlight, water vapor will have an effect on the measurement accuracy.
Capacitance liquid degree sensor
Capacitive level switches use 2 conductive electrodes (usually manufactured from metal) in a circuit with a brief distance between them. When the electrodes are immersed within the liquid, it completes the circuit.
Capacitance liquid stage sensor picture
Advantages: It can be utilized to find out the rise or fall of liquid in a container. By making the electrodes and the container the identical peak, the capacitance between the electrodes could be measured. No capacitance means no liquid. A full capacitance represents a full vessel. The “empty” and “full” measurements must be recorded, and the level is then displayed utilizing 0% and one hundred pc calibration meters.
Disadvantage: Corrosion of the electrodes will change the capacitance of the electrodes and require cleansing or recalibration.
Hydrostatic stage transmitter
Hydrostatic level meter relies on the principle that the static strain of the measured liquid is proportional to the height of that liquid, and makes use of an isolated diffusion silicon delicate component or ceramic capacitive pressure delicate sensor with wonderful performance to convert the static strain into an electrical signal, which is then transformed into a standard electrical sign (generally 4-20mA/1-5VDC) after temperature compensation and linearity correction.
Hydrostatic stage transmitter picture
Characteristics
Good stability, full degree, zero long-term stability up to zero.1%FS/ 12 months. The temperature drift is less than zero.1%FS in the compensation temperature range from zero ℃ to 70 ℃ and less than 0.3%FS in the entire allowable working temperature vary.
With reverse safety, present limiting safety circuit, within the installation of optimistic and adverse polarity connection is not going to damage the transmitter, irregular transmitter will routinely restrict the present within 35MA.
Solid structure, no transferring components, excessive reliability, long service life.
Easy to put in, easy structure, financial and sturdy.
Tuning fork stage sensor
The tuning fork degree meter is a liquid level level switching software designed using the tuning fork precept. The working precept of the switch is to cause its vibration by the resonance of a piezoelectric crystal.
Tuning fork level sensor picture
Every object has its resonant frequency. The resonant frequency of an object is related to the size, mass, form, and pressure of the item. A typical example of the resonant frequency of an object is: the same glass is continuously crammed with water of various heights and tapped to perform instrumental music.
Advantages: may be actually impartial of flow, bubbles, type of liquid, and so forth. No calibration is required.
Disadvantage: can’t be used for viscous media.
Diaphragm liquid degree sensor
Diaphragm or pneumatic stage switches rely on air strain to push the diaphragm, which engages a microswitch inside the body of the device. As the extent increases, the stress within the detection tube increases until the microswitch is activated. As the extent drops, the air strain also drops and the swap opens.
Diaphragm liquid stage sensor picture
Advantages: The tank does not require electricity, can be utilized with a selection of liquids, and the change doesn’t come into contact with the liquid.
Disadvantages: upkeep is required over time because it’s a mechanical gadget.
Float water level sensor
Float degree switches are the unique level sensors. They are mechanical gadgets. A hollow float is hooked up to the arm. As the float rises and falls in the liquid, the arm might be pushed up and down. The arm may be related to a magnetic or mechanical switch to find out on/off, or to a level gauge that may go from full to empty as the extent drops.
Float switches for water pumps are a value effective way to measure water ranges in basement pumping pits.
Float water stage sensor image
Advantages: Float switches can measure any type of liquid and could be designed to function without any power source.
Disadvantages: They are larger than different kinds of switches, and because they are mechanical, they must be used more regularly than other stage switches.
Ultrasonic liquid degree sensor
The ultrasonic level meter is a digital level meter controlled by a microprocessor. In the measurement, ultrasonic pulses are emitted by a transducer (transducer). The sound waves are mirrored by the liquid level and acquired by the identical transducer. It is transformed into an electrical signal by a piezoelectric crystal. The time between the emission and reception of the acoustic wave is used to calculate a measure of the space to the liquid floor.
Ultrasonic liquid level sensor image
Ultrasonic water stage sensor works on the principle that the ultrasonic transducer (probe) emits high-frequency pulse sound waves when it encounters the measured stage (object) floor, is mirrored, and the reflected echo is acquired by the sensor. Transducer and transformed into an electrical sign. The propagation time of the sound wave. It is proportional to the gap of the sound wave to the surface of the thing. Sound wave propagation distance S with the pace of sound C and sound propagation time T could be expressed in the formulation: S = C × T / 2.
Advantages: non-contact measurement, the measured medium is sort of unlimited, and could be extensively used to measure the peak of various liquids and stable materials.
Disadvantages: the measurement accuracy is affected by the current ambient temperature and dirt.
Radar degree gauge
Radar degree gauge is a level measurement instrument based mostly on the time journey principle. The radar wave travels on the velocity of light and the journey time can be transformed right into a stage sign by electronic elements. The probe emits excessive frequency pulses touring on the velocity of light in house. When the pulses encounter the floor of the material, they’re mirrored and received by the receiver inside the instrument, converting the space signal right into a stage sign.
Radar level gauge picture
Advantages: wide range of application, unaffected by temperature, mud, steam, etc.
Disadvantages: simple to generate interference echoes, affecting the measurement accuracy.
Conclusion
In many industrial purposes, one of many essential components of process management is figuring out how a lot fuel or liquid is present in a given vessel. There is a need to make sure that the fill degree of a given substance doesn’t overflow. Therefore, stage measurement transmitters play an important role in monitoring the liquid level of a vessel, container or tank. For additional questions or necessities please contact our professional engineers..
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Table of Contents
What is water degree sensor?
How does the water stage sensor work?
Where to use water level sensors?
What are the advantages of water level sensors?
What are the types of water stage sensors?
Magnetic flap degree gauge
Optical water degree sensor
Capacitance liquid level sensor
Hydrostatic stage transmitter
Tuning fork stage sensor
Diaphragm liquid level sensor
Float water stage sensor
Ultrasonic liquid level sensor
Radar level gauge
Conclusion
What is water degree sensor?
Water degree sensor is a device that measures the excessive or low stage of a liquid in a onerous and fast vessel. According to the tactic of liquid degree measurement, there are two forms of contact and non-contact. What we call input water level transmitter is a contact measurement, which converts the peak of liquid stage into electrical sign output. It is a extensively used water degree transmitter at current.
Various level sensors
How does the water level sensor work?
The working precept of the water level sensor is that when it’s placed into the liquid to be measured at a certain depth, the strain on the front floor of the sensor is converted into the liquid stage top. The calculation formula is Ρ=ρ.g.H+Po, the place P is the sensor floor pressure, ρ is the density of the liquid to be measured, g is the local acceleration of gravity, Po is the atmospheric pressure on the floor of the liquid, and H is the depth of the sensor dropped into the liquid.
Where to make use of water stage sensors?
Uses of water level sensors include the next purposes.
Water degree measurement in pools and tanks
Water level measurement in rivers and lakes
Marine water level measurement
Level measurement of acid and alkaline liquids
Oil stage measurement of oil vehicles and mailboxes
Swimming pool water degree management
Tsunami warning and sea level monitoring
Cooling tower water level control
Sewage pump water stage management
Liquid degree distant monitoring
What are the benefits of water degree sensors?
Simple construction: no movable or elastic components, extremely reliable, no common upkeep throughout use. Simple and simple to operate.
Easy installation: When using, first connect one finish of the wire correctly, then put the other finish of the water degree probe into the answer to be measured.
Range optional: It can measure the water stage inside the range of 1-200 meters, and other measurement ranges can be customized.
Wide range of utility: It is suitable for liquid degree measurement of high temperature and strain, strong corrosion, high air pollution and other media.
Wide range of measuring medium: from water, oil to excessive viscosity paste may be measured with high accuracy, and the temperature compensation range is wide, not affected by the blistering, deposition and electrical characteristics of the measured medium.
Long service life: basic liquid degree sensor can be utilized in a normal setting for 4-5 years, in a harsh setting may additionally be used for 2-3 years.
Powerful: may be instantly linked to the digital display desk real-time show values, can additionally be connected to quite so much of controllers to set the higher and lower limits to control the amount of water in the container.
Accurate measurement: built-in high-quality sensors, high sensitivity, quick response time, precisely reflect the subtle modifications within the circulate or static liquid level, excessive measurement accuracy.
Various types: The liquid degree sensor has various construction designs similar to enter type, straight rod kind, flange type, threaded type, induction sort, screw-in type, float kind, and so forth. It can meet the measurement wants of various locations.
What are the forms of water level sensors?
Here are 9 forms of liquid level sensors on your reference.
Display of various liquid degree sensors
Magnetic flap stage gauge
Magnetic flip stage gauge (also generally recognized as magnetic float stage gauge) based on the buoyancy precept and magnetic coupling developed. When the liquid degree in the measured container rises and falls, the magnetic float in the body tube of the level gauge additionally rises and falls. The everlasting magnetic metal within the float is transferred to the magnetic flip column indicator by way of magnetic coupling, driving the purple and white flip column to show 180°. When the liquid degree rises, the flip column changes from white to purple, and when the liquid level drops, the flip column modifications from pink to white. The purple and white junction of the indicator is the actual peak of the liquid degree inside the container, in order to understand a transparent indication of the liquid degree.
Magnetic flap degree gauge picture
Characteristics:
Wide vary of application, installation of varied varieties, appropriate for any medium level, interface measurement.
The measured medium is totally isolated from the indicating construction, with good sealing performance, leakproof, and excessive reliability for liquid level measurement underneath high pressure, high temperature and corrosion situations.
Set area indication, remote transmission, alarm management about one and can be adjusted freely, totally functional dual-color indication with luminous, continuous and intuitive, eye-catching, massive measurement range, remark direction may be arbitrarily modified.
Good vibration resistance, can adapt to the state of affairs of liquid degree fluctuation simple structure, convenient installation, low upkeep value.
With nice magnetic steel corrector, on-site adjustment of technical parameters.
Optical water degree sensor
Optical sensors are solid-state. เกจวัดแรงดันน้ำประปาราคา use infrared LEDs and phototransistors, which are optically coupled when the sensor is in the air. When the sensing head is immersed in a liquid, the infrared mild escapes, causing the output to change. These sensors can detect the presence or absence of just about any liquid. They are insensitive to ambient mild, unaffected by bubbles in air, and unaffected by small air bubbles in liquids. This makes them helpful in conditions where modifications in situation should be recorded rapidly and reliably, and the place they will operate reliably for lengthy intervals with out upkeep.
Optical water stage sensor picture
Advantages: non-contact measurement, excessive accuracy, fast response time.
Disadvantages: Do not use in direct sunlight, water vapor will have an effect on the measurement accuracy.
Capacitance liquid stage sensor
Capacitive level switches use 2 conductive electrodes (usually made from metal) in a circuit with a brief distance between them. When the electrodes are immersed within the liquid, it completes the circuit.
Capacitance liquid degree sensor image
Advantages: It can be used to determine the rise or fall of liquid in a container. By making the electrodes and the container the identical peak, the capacitance between the electrodes may be measured. No capacitance means no liquid. A full capacitance represents a full vessel. The “empty” and “full” measurements should be recorded, and the extent is then displayed using 0% and one hundred pc calibration meters.
Disadvantage: Corrosion of the electrodes will change the capacitance of the electrodes and require cleansing or recalibration.
Hydrostatic stage transmitter
Hydrostatic degree meter is based on the principle that the static stress of the measured liquid is proportional to the height of that liquid, and uses an isolated diffusion silicon sensitive component or ceramic capacitive pressure sensitive sensor with excellent performance to convert the static stress into an electrical signal, which is then converted into a normal electrical signal (generally 4-20mA/1-5VDC) after temperature compensation and linearity correction.
Hydrostatic degree transmitter picture
Characteristics
Good stability, full diploma, zero long-term stability up to 0.1%FS/ year. The temperature drift is lower than zero.1%FS within the compensation temperature vary from zero ℃ to 70 ℃ and less than zero.3%FS in the whole allowable working temperature vary.
With reverse safety, present limiting protection circuit, within the set up of positive and negative polarity connection will not harm the transmitter, abnormal transmitter will routinely limit the current inside 35MA.
Solid construction, no shifting elements, excessive reliability, long service life.
Easy to put in, easy construction, economic and sturdy.
Tuning fork level sensor
The tuning fork level meter is a liquid level stage switching tool designed utilizing the tuning fork precept. The working precept of the switch is to trigger its vibration by the resonance of a piezoelectric crystal.
Tuning fork level sensor image
Every object has its resonant frequency. The resonant frequency of an object is related to the dimensions, mass, shape, and drive of the item. A typical instance of the resonant frequency of an object is: the same glass is constantly crammed with water of various heights and tapped to perform instrumental music.
Advantages: can be really impartial of circulate, bubbles, type of liquid, etc. No calibration is required.
Disadvantage: cannot be used for viscous media.
Diaphragm liquid level sensor
Diaphragm or pneumatic level switches depend on air stress to push the diaphragm, which engages a microswitch contained in the physique of the system. As the extent increases, the strain in the detection tube increases till the microswitch is activated. As the extent drops, the air stress additionally drops and the swap opens.
Diaphragm liquid level sensor picture
Advantages: The tank doesn’t require electricity, can be utilized with a big selection of liquids, and the swap does not come into contact with the liquid.
Disadvantages: maintenance is required over time as a end result of it is a mechanical system.
Float water level sensor
Float stage switches are the unique level sensors. They are mechanical units. A hole float is connected to the arm. As the float rises and falls in the liquid, the arm shall be pushed up and down. The arm could be linked to a magnetic or mechanical change to determine on/off, or to a degree gauge that may go from full to empty as the extent drops.
Float switches for water pumps are a cost efficient way to measure water ranges in basement pumping pits.
Float water stage sensor picture
Advantages: Float switches can measure any sort of liquid and can be designed to function without any power source.
Disadvantages: They are larger than different types of switches, and because they are mechanical, they must be used extra frequently than other level switches.
Ultrasonic liquid degree sensor
The ultrasonic level meter is a digital stage meter controlled by a microprocessor. In the measurement, ultrasonic pulses are emitted by a transducer (transducer). The sound waves are mirrored by the liquid degree and obtained by the same transducer. It is converted into an electrical signal by a piezoelectric crystal. The time between the emission and reception of the acoustic wave is used to calculate a measure of the space to the liquid floor.
Ultrasonic liquid degree sensor image
Ultrasonic water stage sensor works on the principle that the ultrasonic transducer (probe) emits high-frequency pulse sound waves when it encounters the measured level (object) floor, is mirrored, and the mirrored echo is received by the sensor. Transducer and transformed into an electrical signal. The propagation time of the sound wave. It is proportional to the distance of the sound wave to the floor of the thing. Sound wave propagation distance S with the pace of sound C and sound propagation time T may be expressed within the formulation: S = C × T / 2.
Advantages: non-contact measurement, the measured medium is nearly unlimited, and could be widely used to measure the height of varied liquids and strong materials.
Disadvantages: the measurement accuracy is affected by the current ambient temperature and dust.
Radar degree gauge
Radar degree gauge is a stage measurement instrument primarily based on the time travel principle. The radar wave travels on the velocity of light and the journey time can be converted into a level sign by digital components. The probe emits excessive frequency pulses traveling on the speed of light in house. When the pulses encounter the surface of the fabric, they are mirrored and obtained by the receiver contained in the instrument, changing the distance signal into a stage signal.
Radar level gauge image
Advantages: big selection of software, unaffected by temperature, mud, steam, and so on.
Disadvantages: simple to generate interference echoes, affecting the measurement accuracy.
Conclusion
In many industrial functions, one of many important parts of process management is figuring out how a lot gas or liquid is present in a given vessel. There is a need to make sure that the fill level of a given substance does not overflow. Therefore, level measurement transmitters play an necessary role in monitoring the liquid degree of a vessel, container or tank. For additional questions or necessities please contact our professional engineers..