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 benefits of water stage sensors?
What are the types of water degree sensors?
Magnetic flap level gauge
Optical water degree sensor
Capacitance liquid stage sensor
Hydrostatic degree transmitter
Tuning fork level sensor
Diaphragm liquid degree sensor
Float water degree sensor
Ultrasonic liquid level sensor
Radar degree gauge
Conclusion
What is water level sensor?
Water degree sensor is a tool that measures the high or low level of a liquid in a fixed vessel. According to the strategy of liquid stage measurement, there are two types of contact and non-contact. What we name input water level transmitter is a contact measurement, which converts the peak of liquid level into electrical signal output. ไดอะแฟรม is a broadly used water level transmitter at present.
Various level sensors
How does the water degree sensor work?
The working principle of the water degree sensor is that when it is placed into the liquid to be measured at a sure depth, the pressure on the entrance surface of the sensor is converted into the liquid level top. The calculation formulation is Ρ=ρ.g.H+Po, the place P is the sensor surface strain, ρ is the density of the liquid to be measured, g is the local acceleration of gravity, Po is the atmospheric stress on the surface of the liquid, and H is the depth of the sensor dropped into the liquid.
Where to use water level sensors?
Uses of water level sensors embrace the following purposes.
Water stage measurement in swimming pools and tanks
Water stage measurement in rivers and lakes
Marine water level measurement
Level measurement of acid and alkaline liquids
Oil level measurement of oil vehicles and mailboxes
Swimming pool water stage management
Tsunami warning and sea degree monitoring
Cooling tower water degree management
Sewage pump water level management
Liquid degree distant monitoring
What are the advantages of water degree sensors?
Simple structure: no movable or elastic elements, extraordinarily dependable, no common maintenance throughout use. Simple and simple to function.
Easy set up: When using, first join one finish of the wire accurately, then put the opposite finish of the water degree probe into the answer to be measured.
Range optionally available: It can measure the water level throughout the range of 1-200 meters, and other measurement ranges can be customized.
Wide vary of software: It is appropriate for liquid level measurement of excessive temperature and strain, robust corrosion, excessive pollution and different media.
Wide vary of measuring medium: from water, oil to excessive viscosity paste can be measured with excessive accuracy, and the temperature compensation vary is extensive, not affected by the blistering, deposition and electrical traits of the measured medium.
Long service life: common liquid stage sensor can be utilized in a normal setting for 4-5 years, in a harsh environment may also be used for 2-3 years.
Powerful: could be instantly linked to the digital display desk real-time show values, can also be linked to quite a lot of controllers to set the upper and decrease limits to control the quantity of water within the container.
Accurate measurement: built-in high-quality sensors, excessive sensitivity, quick response time, precisely mirror the refined modifications within the move or static liquid level, high measurement accuracy.
Various types: The liquid level sensor has numerous construction designs similar to input type, straight rod kind, flange type, threaded type, induction sort, screw-in kind, float sort, and so forth. It can meet the measurement wants of assorted places.
What are the kinds of water stage sensors?
Here are 9 kinds of liquid level sensors for your reference.
Display of various liquid level sensors
Magnetic flap level gauge
Magnetic flip level gauge (also generally known as magnetic float degree gauge) primarily based on the buoyancy precept and magnetic coupling developed. When the liquid level within the measured container rises and falls, the magnetic float within the body tube of the level gauge additionally rises and falls. The permanent magnetic metal 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 stage rises, the flip column changes from white to purple, and when the liquid stage drops, the flip column adjustments from pink to white. The purple and white junction of the indicator is the precise peak of the liquid stage inside the container, so as to comprehend a clear indication of the liquid degree.
Magnetic flap level gauge picture
Characteristics:
Wide range of utility, set up of various types, 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 stage measurement beneath high strain, excessive temperature and corrosion situations.
Set area indication, remote transmission, alarm management about one and may be adjusted freely, fully functional dual-color indication with luminous, continuous and intuitive, eye-catching, giant measurement range, remark path can be arbitrarily modified.
Good vibration resistance, can adapt to the situation of liquid level fluctuation easy structure, handy installation, low upkeep cost.
With nice magnetic metal corrector, on-site adjustment of technical parameters.
Optical water degree 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 gentle escapes, inflicting the output to vary. These sensors can detect the presence or absence of simply 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 situations the place adjustments in condition must be recorded rapidly and reliably, and the place they’ll operate reliably for lengthy durations without maintenance.
Optical water stage sensor picture
Advantages: non-contact measurement, high accuracy, quick response time.
Disadvantages: Do not use in direct sunlight, water vapor will affect the measurement accuracy.
Capacitance liquid degree sensor
Capacitive stage switches use 2 conductive electrodes (usually manufactured from metal) in a circuit with a brief distance between them. When the electrodes are immersed in the liquid, it completes the circuit.
Capacitance liquid stage sensor image
Advantages: It can be utilized to determine the rise or fall of liquid in a container. By making the electrodes and the container the same 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 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 level transmitter
Hydrostatic degree meter is based on the principle that the static strain of the measured liquid is proportional to the peak of that liquid, and uses an isolated diffusion silicon sensitive factor or ceramic capacitive strain sensitive sensor with excellent performance to convert the static strain into an electrical sign, which is then transformed into a normal electrical sign (generally 4-20mA/1-5VDC) after temperature compensation and linearity correction.
Hydrostatic degree transmitter picture
Characteristics
Good stability, full degree, zero long-term stability as a lot as 0.1%FS/ 12 months. The temperature drift is less than 0.1%FS within the compensation temperature range from 0 ℃ to 70 ℃ and fewer than 0.3%FS in the entire allowable operating temperature vary.
With reverse protection, present limiting protection circuit, within the set up of constructive and unfavorable polarity connection is not going to injury the transmitter, abnormal transmitter will mechanically limit the present within 35MA.
Solid construction, no moving parts, high reliability, long service life.
Easy to install, easy construction, economic and sturdy.
Tuning fork degree sensor
The tuning fork degree meter is a liquid point level switching software designed utilizing 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 image
Every object has its resonant frequency. The resonant frequency of an object is related to the scale, mass, shape, and force of the thing. A typical example of the resonant frequency of an object is: the identical glass is constantly filled with water of different heights and tapped to perform instrumental music.
Advantages: may be really independent of move, bubbles, sort of liquid, and so on. No calibration is required.
Disadvantage: can’t be used for viscous media.
Diaphragm liquid level sensor
Diaphragm or pneumatic degree switches rely on air stress to push the diaphragm, which engages a microswitch contained in the body of the device. As the extent increases, the pressure in the detection tube increases until the microswitch is activated. As the extent drops, the air strain also drops and the swap opens.
Diaphragm liquid level sensor image
Advantages: The tank doesn’t require electricity, can be used with a selection of liquids, and the switch doesn’t come into contact with the liquid.
Disadvantages: maintenance is required over time as a result of it is a mechanical gadget.
Float water level sensor
Float stage switches are the unique stage 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 will be pushed up and down. The arm can be connected to a magnetic or mechanical change to determine on/off, or to a stage 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 level sensor picture
Advantages: Float switches can measure any sort of liquid and may be designed to function with none energy source.
Disadvantages: They are bigger than other forms of switches, and because they are mechanical, they should be used extra regularly than other level switches.
Ultrasonic liquid degree sensor
The ultrasonic degree 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 identical transducer. It is converted into an electrical sign by a piezoelectric crystal. The time between the emission and reception of the acoustic wave is used to calculate a measure of the distance to the liquid surface.
Ultrasonic liquid level sensor picture
Ultrasonic water level sensor works on the precept that the ultrasonic transducer (probe) emits high-frequency pulse sound waves when it encounters the measured stage (object) surface, is reflected, and the mirrored 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 distance of the sound wave to the floor of the object. Sound wave propagation distance S with the pace of sound C and sound propagation time T could be expressed within the formulation: S = C × T / 2.
Advantages: non-contact measurement, the measured medium is almost unlimited, and can be broadly used to measure the height of varied liquids and solid materials.
Disadvantages: the measurement accuracy is affected by the present ambient temperature and dust.
Radar degree gauge
Radar level gauge is a degree measurement instrument based mostly on the time journey principle. The radar wave travels at the speed of sunshine and the journey time may be converted right into a degree signal by digital parts. The probe emits excessive frequency pulses touring at the speed of light in space. When the pulses encounter the surface of the material, they’re mirrored and acquired by the receiver inside the instrument, changing the distance sign right into a degree signal.
Radar stage gauge image
Advantages: big selection of software, unaffected by temperature, mud, steam, and so forth.
Disadvantages: easy to generate interference echoes, affecting the measurement accuracy.
Conclusion
In many industrial purposes, one of many essential parts of course of management is understanding how a lot fuel or liquid is current in a given vessel. There is a necessity to guarantee that the fill level of a given substance doesn’t overflow. Therefore, stage measurement transmitters play an important role in monitoring the liquid degree 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 degree sensor work?
Where to use water level sensors?
What are the advantages of water level sensors?
What are the kinds of water degree sensors?
Magnetic flap stage gauge
Optical water level sensor
Capacitance liquid level sensor
Hydrostatic level transmitter
Tuning fork level sensor
Diaphragm liquid degree sensor
Float water stage sensor
Ultrasonic liquid degree sensor
Radar level gauge
Conclusion
What is water degree sensor?
Water degree sensor is a tool that measures the excessive or low stage of a liquid in a hard and fast vessel. According to the strategy of liquid level measurement, there are two types of contact and non-contact. What we name enter water stage transmitter is a contact measurement, which converts the height of liquid degree into electrical sign output. It is a extensively used water stage transmitter at present.
Various degree sensors
How does the water level sensor work?
The working precept of the water stage sensor is that when it is placed into the liquid to be measured at a sure depth, the stress on the entrance floor of the sensor is converted into the liquid level top. The calculation formula is Ρ=ρ.g.H+Po, where P is the sensor surface pressure, ρ is the density of the liquid to be measured, g is the local acceleration of gravity, Po is the atmospheric strain on the surface of the liquid, and H is the depth of the sensor dropped into the liquid.
Where to make use of water degree sensors?
Uses of water level sensors include the following functions.
Water degree measurement in pools and tanks
Water degree measurement in rivers and lakes
Marine water stage measurement
Level measurement of acid and alkaline liquids
Oil degree measurement of oil vehicles and mailboxes
Swimming pool water level management
Tsunami warning and sea stage monitoring
Cooling tower water level control
Sewage pump water level management
Liquid level distant monitoring
What are the benefits of water degree sensors?
Simple construction: no movable or elastic elements, extraordinarily dependable, no regular upkeep throughout use. Simple and simple to operate.
Easy set up: When utilizing, first connect one finish of the wire accurately, then put the opposite end of the water degree probe into the answer to be measured.
Range elective: It can measure the water stage throughout the range of 1-200 meters, and different measurement ranges can be personalized.
Wide range of utility: It is appropriate for liquid degree measurement of excessive temperature and stress, strong corrosion, high pollution and different 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 broad, not affected by the blistering, deposition and electrical traits of the measured medium.
Long service life: common liquid level sensor can be used in a traditional setting for 4-5 years, in a harsh environment may also be used for 2-3 years.
Powerful: could be directly related to the digital show table real-time display values, may additionally be connected to a wide selection of controllers to set the upper and decrease limits to regulate the amount of water within the container.
Accurate measurement: built-in high-quality sensors, excessive sensitivity, quick response time, accurately replicate the subtle changes in the circulate or static liquid level, high measurement accuracy.
Various sorts: The liquid stage sensor has various structure designs corresponding to input type, straight rod sort, flange kind, threaded kind, induction kind, screw-in type, float kind, etc. It can meet the measurement wants of various places.
What are the kinds of water stage sensors?
Here are 9 kinds of liquid level sensors for your reference.
Display of varied liquid stage sensors
Magnetic flap degree gauge
Magnetic flip stage gauge (also known as magnetic float degree gauge) based 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 level gauge also rises and falls. The permanent magnetic steel in the float is transferred to the magnetic flip column indicator via magnetic coupling, driving the purple and white flip column to turn 180°. When the liquid stage rises, the flip column changes from white to pink, and when the liquid level drops, the flip column modifications from red to white. The red and white junction of the indicator is the actual top of the liquid degree inside the container, in order to realize a clear indication of the liquid degree.
Magnetic flap stage gauge image
Characteristics:
Wide vary of software, set up of assorted forms, suitable for any medium level, interface measurement.
The measured medium is completely isolated from the indicating construction, with good sealing efficiency, leakproof, and excessive reliability for liquid degree measurement beneath excessive pressure, excessive temperature and corrosion situations.
Set subject indication, remote transmission, alarm management about one and can be adjusted freely, absolutely useful dual-color indication with luminous, continuous and intuitive, eye-catching, massive measurement range, observation path may be arbitrarily changed.
Good vibration resistance, can adapt to the situation of liquid stage fluctuation easy structure, convenient installation, low upkeep value.
With fantastic magnetic steel corrector, on-site adjustment of technical parameters.
Optical water level sensor
Optical sensors are solid-state. They use infrared LEDs and phototransistors, which 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 vary. These sensors can detect the presence or absence of virtually 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 the place modifications in condition have to be recorded quickly and reliably, and the place they’ll operate reliably for long intervals with out maintenance.
Optical water stage sensor image
Advantages: non-contact measurement, high accuracy, fast response time.
Disadvantages: Do not use in direct daylight, water vapor will affect the measurement accuracy.
Capacitance liquid degree sensor
Capacitive level switches use 2 conductive electrodes (usually made from metal) in a circuit with a short distance between them. When the electrodes are immersed within the liquid, it completes the circuit.
Capacitance liquid stage sensor picture
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 top, 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 have to be recorded, and the extent is then displayed utilizing 0% and 100% calibration meters.
Disadvantage: Corrosion of the electrodes will change the capacitance of the electrodes and require cleaning or recalibration.
Hydrostatic stage transmitter
Hydrostatic stage meter is predicated on the principle that the static strain of the measured liquid is proportional to the peak of that liquid, and uses an isolated diffusion silicon delicate component or ceramic capacitive strain sensitive sensor with wonderful performance to convert the static pressure into an electrical sign, which is then transformed into a normal 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 0.1%FS/ 12 months. The temperature drift is less than zero.1%FS within the compensation temperature vary from 0 ℃ to 70 ℃ and less than zero.3%FS in the whole allowable operating temperature vary.
With reverse safety, current limiting safety circuit, within the set up of constructive and unfavorable polarity connection will not harm the transmitter, abnormal transmitter will automatically limit the present within 35MA.
Solid construction, no moving elements, high reliability, lengthy service life.
Easy to install, simple construction, financial and sturdy.
Tuning fork degree sensor
The tuning fork level meter is a liquid point stage switching tool designed utilizing the tuning fork principle. The working principle of the switch is to trigger its vibration by the resonance of a piezoelectric crystal.
Tuning fork stage 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 object. A typical instance of the resonant frequency of an object is: the same glass is continuously full of water of different heights and tapped to perform instrumental music.
Advantages: may be actually unbiased of flow, bubbles, kind of liquid, and so forth. No calibration is required.
Disadvantage: cannot be used for viscous media.
Diaphragm liquid degree sensor
Diaphragm or pneumatic stage switches rely on air stress to push the diaphragm, which engages a microswitch inside the physique of the gadget. As the level increases, the pressure in the detection tube increases till the microswitch is activated. As the level drops, the air strain also drops and the switch opens.
Diaphragm liquid stage sensor image
Advantages: The tank doesn’t require electricity, can be used with a variety of liquids, and the swap doesn’t come into contact with the liquid.
Disadvantages: maintenance is required over time as a result of it is a mechanical gadget.
Float water stage sensor
Float stage switches are the original degree 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 related to a magnetic or mechanical change to find out on/off, or to a level gauge that can go from full to empty as the level drops.
Float switches for water pumps are a cost efficient approach to measure water levels in basement pumping pits.
Float water degree sensor image
Advantages: Float switches can measure any kind of liquid and may be designed to operate without any energy source.
Disadvantages: They are larger than other kinds of switches, and because they are mechanical, they should be used more regularly than other stage switches.
Ultrasonic liquid level sensor
The ultrasonic level meter is a digital degree meter controlled by a microprocessor. In the measurement, ultrasonic pulses are emitted by a transducer (transducer). The sound waves are reflected by the liquid level and received by the same transducer. It is transformed into an electrical sign by a piezoelectric crystal. The time between the emission and reception of the acoustic wave is used to calculate a measure of the distance to the liquid surface.
Ultrasonic liquid stage sensor picture
Ultrasonic water stage sensor works on the precept that the ultrasonic transducer (probe) emits high-frequency pulse sound waves when it encounters the measured level (object) surface, is reflected, and the reflected echo is obtained by the sensor. Transducer and converted into an electrical sign. The propagation time of the sound wave. It is proportional to the distance of the sound wave to the surface of the object. Sound wave propagation distance S with the pace of sound C and sound propagation time T can be expressed in the formulation: S = C × T / 2.
Advantages: non-contact measurement, the measured medium is nearly limitless, and may be widely used to measure the peak of varied liquids and solid supplies.
Disadvantages: the measurement accuracy is affected by the present ambient temperature and dirt.
Radar level gauge
Radar level gauge is a level measurement instrument based on the time travel precept. The radar wave travels at the speed of light and the journey time could be converted into a stage signal by electronic components. The probe emits excessive frequency pulses touring on the velocity of light in area. When the pulses encounter the floor of the fabric, they’re mirrored and acquired by the receiver inside the instrument, converting the space signal into a stage sign.
Radar level gauge picture
Advantages: wide range of software, unaffected by temperature, dust, steam, and so on.
Disadvantages: easy 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 much gasoline or liquid is present in a given vessel. There is a necessity to make certain that the fill degree of a given substance does not overflow. Therefore, stage measurement transmitters play an essential function in monitoring the liquid level of a vessel, container or tank. For further questions or requirements please contact our skilled engineers..