Table of Contents
What is water degree sensor?
How does the water stage sensor work?
Where to make use of water stage sensors?
What are the advantages of water degree sensors?
What are the types of water stage sensors?
Magnetic flap degree gauge
Optical water level sensor
Capacitance liquid level sensor
Hydrostatic degree transmitter
Tuning fork degree sensor
Diaphragm liquid level sensor
Float water degree sensor
Ultrasonic liquid stage sensor
Radar degree gauge
Conclusion
What is water stage sensor?
Water level sensor is a device that measures the excessive or low level of a liquid in a exhausting and fast vessel. According to the tactic of liquid level measurement, there are two kinds of contact and non-contact. What we call enter water level transmitter is a contact measurement, which converts the peak of liquid level into electrical sign output. It is a broadly used water level transmitter at current.
Various degree sensors
How does the water degree sensor work?
The working precept of the water stage sensor is that when it is placed into the liquid to be measured at a certain depth, the pressure on the entrance floor of the sensor is transformed into the liquid level height. The calculation method is Ρ=ρ.g.H+Po, the place P is the sensor floor stress, ρ is the density of the liquid to be measured, g is the native acceleration of gravity, Po is the atmospheric strain on the floor 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 stage sensors embody the next purposes.
Water degree measurement in swimming pools and tanks
Water degree measurement in rivers and lakes
Marine water stage measurement
Level measurement of acid and alkaline liquids
Oil level measurement of oil vans and mailboxes
Swimming pool water degree control
Tsunami warning and sea degree monitoring
Cooling tower water degree control
Sewage pump water stage control
Liquid degree remote monitoring
What are the benefits of water degree sensors?
Simple construction: no movable or elastic parts, extraordinarily reliable, no regular maintenance throughout use. Simple and simple to operate.
Easy installation: When utilizing, first connect one finish of the wire accurately, then put the opposite end of the water stage probe into the answer to be measured.
Range elective: It can measure the water stage throughout the vary of 1-200 meters, and different measurement ranges can also be customized.
Wide vary of software: It is appropriate for liquid stage measurement of excessive temperature and pressure, strong corrosion, excessive pollution and other media.
Wide range of measuring medium: from water, oil to excessive viscosity paste could be measured with high accuracy, and the temperature compensation range is broad, not affected by the blistering, deposition and electrical characteristics of the measured medium.
Long service life: basic liquid stage sensor can be utilized in a standard environment for 4-5 years, in a harsh setting can be used for 2-3 years.
Powerful: may be immediately related to the digital show desk real-time show values, can be related to a variety of controllers to set the higher and decrease limits to control the amount of water within the container.
Accurate measurement: built-in high-quality sensors, high sensitivity, quick response time, precisely reflect the subtle adjustments in the flow or static liquid degree, excessive measurement accuracy.
Various types: The liquid stage sensor has numerous structure designs such as enter kind, straight rod type, flange sort, threaded kind, induction type, screw-in sort, float type, etc. It can meet the measurement wants of varied locations.
What are the forms of water level sensors?
Here are 9 forms of liquid degree sensors for your reference.
Display of assorted liquid level sensors
Magnetic flap degree gauge
Magnetic flip level gauge (also often recognized as magnetic float degree gauge) based on the buoyancy principle and magnetic coupling developed. When the liquid level within the measured container rises and falls, the magnetic float within the physique tube of the extent gauge additionally rises and falls. The everlasting 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 degree rises, the flip column changes from white to purple, and when the liquid degree drops, the flip column adjustments from purple to white. The red and white junction of the indicator is the actual peak of the liquid level contained in the container, so as to realize a transparent indication of the liquid degree.
Magnetic flap stage gauge picture
Characteristics:
Wide vary of software, installation of assorted forms, appropriate for any medium degree, interface measurement.
The measured medium is totally isolated from the indicating construction, with good sealing efficiency, leakproof, and excessive reliability for liquid level measurement underneath excessive strain, high temperature and corrosion situations.
Set subject indication, remote transmission, alarm control about one and could be adjusted freely, totally useful dual-color indication with luminous, steady and intuitive, eye-catching, large measurement vary, observation course can be arbitrarily modified.
Good vibration resistance, can adapt to the situation of liquid stage fluctuation simple construction, convenient set up, low upkeep price.
With fantastic magnetic metal 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 almost 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 conditions where modifications in situation should be recorded quickly and reliably, and where they will function reliably for long durations with out maintenance.
Optical water stage sensor picture
Advantages: non-contact measurement, excessive accuracy, quick response time.
Disadvantages: Do not use in direct sunlight, water vapor will have an result on the measurement accuracy.
Capacitance liquid stage 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 in the liquid, it completes the circuit.
Capacitance liquid degree sensor image
Advantages: It can be used to find out the rise or fall of liquid in a container. By making the electrodes and the container the same peak, the capacitance between the electrodes can be measured. No capacitance means no liquid. A full capacitance represents a full vessel. The “empty” and “full” measurements must be recorded, and the extent is then displayed using 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 based on the precept that the static stress of the measured liquid is proportional to the height of that liquid, and uses an isolated diffusion silicon sensitive element or ceramic capacitive strain sensitive sensor with glorious performance to transform the static strain into an electrical sign, which is then converted into a standard 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 much as zero.1%FS/ yr. The temperature drift is lower than zero.1%FS in the compensation temperature vary from zero ℃ to 70 ℃ and less than 0.3%FS in the whole allowable operating temperature range.
With reverse protection, present limiting safety circuit, in the installation of constructive and adverse polarity connection will not damage the transmitter, irregular transmitter will routinely restrict the present within 35MA.
Solid construction, no moving elements, excessive reliability, long service life.
Easy to put in, easy structure, economic and sturdy.
Tuning fork level sensor
The tuning fork stage meter is a liquid point level switching tool designed using the tuning fork precept. The working precept of the change is to trigger 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 said to the dimensions, mass, form, and force of the item. เครื่องมือตรวจวัดความดันเลือดเรียกว่า of the resonant frequency of an object is: the identical glass is repeatedly full of water of different heights and tapped to perform instrumental music.
Advantages: could be really impartial of move, bubbles, kind of liquid, etc. No calibration is required.
Disadvantage: cannot be used for viscous media.
Diaphragm liquid level sensor
Diaphragm or pneumatic stage switches rely on air pressure to push the diaphragm, which engages a microswitch contained in the physique of the system. As the level increases, the stress within the detection tube will increase till the microswitch is activated. As the extent drops, the air strain also drops and the change opens.
Diaphragm liquid level sensor image
Advantages: The tank doesn’t require electrical energy, can be used with a selection of liquids, and the change doesn’t come into contact with the liquid.
Disadvantages: maintenance is required over time as a end result of it’s a mechanical device.
Float water level sensor
Float degree switches are the unique level sensors. They are mechanical units. A hollow float is connected to the arm. As the float rises and falls in the liquid, the arm might be pushed up and down. The arm may 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 value efficient method to measure water ranges in basement pumping pits.
Float water degree sensor picture
Advantages: Float switches can measure any sort of liquid and may be designed to operate without any power supply.
Disadvantages: They are larger than other kinds of switches, and since they are mechanical, they should be used more frequently than different level switches.
Ultrasonic liquid degree sensor
The ultrasonic stage meter is a digital level meter managed by a microprocessor. In the measurement, ultrasonic pulses are emitted by a transducer (transducer). The sound waves are reflected by the liquid degree 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 space to the liquid floor.
Ultrasonic liquid degree sensor image
Ultrasonic water stage sensor works on the precept that the ultrasonic transducer (probe) emits high-frequency pulse sound waves when it encounters the measured stage (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 space of the sound wave to the surface of the item. Sound wave propagation distance S with the velocity of sound C and sound propagation time T can be expressed in the method: S = C × T / 2.
Advantages: non-contact measurement, the measured medium is almost limitless, and could be broadly used to measure the height of various liquids and strong supplies.
Disadvantages: the measurement accuracy is affected by the current ambient temperature and mud.
Radar degree gauge
Radar level gauge is a degree measurement instrument based mostly on the time travel principle. The radar wave travels on the speed of sunshine and the journey time can be converted right into a degree signal by electronic elements. The probe emits high frequency pulses touring on the pace of sunshine in space. When the pulses encounter the floor of the material, they’re mirrored and received by the receiver inside the instrument, converting the gap signal into a stage signal.
Radar stage gauge image
Advantages: wide range of application, unaffected by temperature, mud, steam, and so forth.
Disadvantages: straightforward to generate interference echoes, affecting the measurement accuracy.
Conclusion
In many industrial applications, one of the essential components of process management is figuring out how a lot fuel or liquid is present in a given vessel. There is a necessity to guarantee that the fill degree of a given substance does not overflow. Therefore, degree measurement transmitters play an necessary 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 make use of water degree sensors?
What are the benefits of water level sensors?
What are the forms of water degree sensors?
Magnetic flap degree gauge
Optical water level sensor
Capacitance liquid stage sensor
Hydrostatic stage transmitter
Tuning fork degree sensor
Diaphragm liquid level sensor
Float water level sensor
Ultrasonic liquid degree sensor
Radar level gauge
Conclusion
What is water stage sensor?
Water degree sensor is a tool that measures the high or low degree of a liquid in a set vessel. According to the tactic of liquid stage measurement, there are two types of contact and non-contact. What we call enter water stage transmitter is a contact measurement, which converts the peak of liquid level into electrical signal output. It is a widely used water degree transmitter at present.
Various degree sensors
How does the water degree 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 pressure on the entrance surface of the sensor is transformed into the liquid stage peak. The calculation formula is Ρ=ρ.g.H+Po, the place P is the sensor floor 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 stage sensors?
Uses of water level sensors embrace the next applications.
Water level measurement in pools and tanks
Water level measurement in rivers and lakes
Marine water level 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 degree control
Sewage pump water stage management
Liquid degree distant monitoring
What are the benefits of water stage sensors?
Simple structure: no movable or elastic components, extremely reliable, no common maintenance throughout use. Simple and straightforward to operate.
Easy set up: When utilizing, first join one end of the wire accurately, then put the other end of the water level probe into the answer to be measured.
Range optional: It can measure the water stage throughout the range of 1-200 meters, and other measurement ranges can be custom-made.
Wide vary of application: It is suitable for liquid degree measurement of high temperature and strain, strong corrosion, excessive pollution and different media.
Wide range of measuring medium: from water, oil to excessive viscosity paste can be measured with excessive accuracy, and the temperature compensation range is extensive, not affected by the blistering, deposition and electrical traits of the measured medium.
Long service life: general liquid level sensor can be utilized in a standard surroundings for 4-5 years, in a harsh surroundings can be used for 2-3 years.
Powerful: could be directly linked to the digital display desk real-time display values, may additionally be linked to a variety of controllers to set the upper and decrease limits to manage the amount of water within the container.
Accurate measurement: built-in high-quality sensors, high sensitivity, quick response time, accurately replicate the delicate modifications in the circulate or static liquid stage, excessive measurement accuracy.
Various varieties: The liquid stage sensor has numerous construction designs such as input kind, straight rod kind, flange sort, threaded kind, induction sort, screw-in sort, float kind, and so on. It can meet the measurement wants of various locations.
What are the types of water level sensors?
Here are 9 kinds of liquid degree sensors on your reference.
Display of various liquid level sensors
Magnetic flap degree gauge
Magnetic flip level gauge (also generally recognized as magnetic float level gauge) primarily based on the buoyancy precept and magnetic coupling developed. When the liquid level in the measured container rises and falls, the magnetic float in the body tube of the extent 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 purple and white flip column to show 180°. When the liquid stage rises, the flip column adjustments from white to red, and when the liquid stage drops, the flip column changes from pink to white. The pink and white junction of the indicator is the actual peak of the liquid stage inside the container, in order to realize a clear indication of the liquid stage.
Magnetic flap level gauge image
Characteristics:
Wide vary of utility, set up of assorted types, suitable for any medium stage, interface measurement.
The measured medium is totally isolated from the indicating structure, with good sealing performance, leakproof, and excessive reliability for liquid stage measurement underneath excessive strain, high temperature and corrosion circumstances.
Set area indication, remote transmission, alarm control about one and can be adjusted freely, fully useful dual-color indication with luminous, continuous and intuitive, eye-catching, giant measurement vary, statement direction could be arbitrarily modified.
Good vibration resistance, can adapt to the scenario of liquid level fluctuation simple construction, convenient set up, low maintenance value.
With fine magnetic metal 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 in the air. When the sensing head is immersed in a liquid, the infrared mild escapes, inflicting the output to vary. These sensors can detect the presence or absence of almost 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 changes in condition have to be recorded rapidly and reliably, and where they will function reliably for lengthy intervals without 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 affect the measurement accuracy.
Capacitance liquid level sensor
Capacitive degree switches use 2 conductive electrodes (usually made of metal) in a circuit with a short distance between them. When the electrodes are immersed in the liquid, it completes the circuit.
Capacitance liquid degree sensor image
Advantages: It can be used to discover out the rise or fall of liquid in a container. By making the electrodes and the container the same peak, the capacitance between the electrodes can 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 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 stage 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 pressure sensitive sensor with glorious efficiency to transform 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 degree transmitter picture
Characteristics
Good stability, full diploma, zero long-term stability as much as zero.1%FS/ 12 months. The temperature drift is lower than zero.1%FS in the compensation temperature vary from zero ℃ to 70 ℃ and less than zero.3%FS in the whole allowable operating temperature vary.
With reverse protection, current limiting safety circuit, within the set up of optimistic and negative polarity connection won’t harm the transmitter, abnormal transmitter will mechanically limit the current within 35MA.
Solid construction, no shifting components, high reliability, lengthy service life.
Easy to install, simple construction, financial and sturdy.
Tuning fork stage sensor
The tuning fork degree meter is a liquid level degree switching tool designed utilizing the tuning fork principle. The working principle of the swap 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 said to the dimensions, mass, shape, and force of the item. A typical example of the resonant frequency of an object is: the identical glass is continuously crammed with water of different heights and tapped to carry out instrumental music.
Advantages: may be really unbiased of move, bubbles, sort of liquid, and so on. No calibration is required.
Disadvantage: can’t be used for viscous media.
Diaphragm liquid stage sensor
Diaphragm or pneumatic stage switches depend on air stress to push the diaphragm, which engages a microswitch contained in the body of the system. As the extent increases, the strain in the detection tube will increase until the microswitch is activated. As the extent drops, the air strain also drops and the change opens.
Diaphragm liquid stage sensor picture
Advantages: The tank does not require electricity, can be used with quite so much 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 level sensor
Float degree switches are the unique degree sensors. They are mechanical gadgets. A hollow float is connected to the arm. As the float rises and falls within the liquid, the arm shall be pushed up and down. The arm can be linked 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 method to measure water levels in basement pumping pits.
Float water degree sensor image
Advantages: Float switches can measure any sort of liquid and can be designed to function with none energy supply.
Disadvantages: They are larger than other forms of switches, and because they’re mechanical, they should be used extra regularly than different stage switches.
Ultrasonic liquid level sensor
The ultrasonic level meter is a digital level meter managed by a microprocessor. In the measurement, ultrasonic pulses are emitted by a transducer (transducer). The sound waves are mirrored by the liquid degree and received by the same 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 space to the liquid floor.
Ultrasonic liquid degree sensor image
Ultrasonic water degree sensor works on the precept that the ultrasonic transducer (probe) emits high-frequency pulse sound waves when it encounters the measured degree (object) surface, 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 surface of the item. 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 type of limitless, and could be broadly used to measure the height of various liquids and stable materials.
Disadvantages: the measurement accuracy is affected by the current ambient temperature and mud.
Radar level gauge
Radar degree gauge is a degree measurement instrument based on the time travel principle. The radar wave travels at the speed of sunshine and the travel time can be converted into a degree signal by digital elements. The probe emits excessive frequency pulses touring at the velocity of sunshine in house. When the pulses encounter the surface of the material, they’re mirrored and obtained by the receiver contained in the instrument, changing the gap sign right into a stage signal.
Radar level gauge picture
Advantages: wide range of software, unaffected by temperature, mud, steam, and so on.
Disadvantages: easy to generate interference echoes, affecting the measurement accuracy.
Conclusion
In many industrial applications, one of many important elements of process control is understanding how much gasoline or liquid is current in a given vessel. There is a necessity to make certain that the fill stage of a given substance does not overflow. Therefore, stage measurement transmitters play an necessary role in monitoring the liquid stage of a vessel, container or tank. For further questions or necessities please contact our skilled engineers..