Table of Contents
What is water stage sensor?
How does the water level sensor work?
Where to make use of water stage sensors?
What are the benefits of water stage sensors?
What are the types of water stage sensors?
Magnetic flap stage gauge
Optical water stage sensor
Capacitance liquid level sensor
Hydrostatic level transmitter
Tuning fork degree sensor
Diaphragm liquid level sensor
Float water level sensor
Ultrasonic liquid stage sensor
Radar stage gauge
Conclusion
What is water level sensor?
Water degree sensor is a device that measures the excessive or low level of a liquid in a set vessel. According to the tactic of liquid stage measurement, there are two forms of contact and non-contact. What we call enter water stage transmitter is a contact measurement, which converts the height of liquid level into electrical signal output. It is a extensively used water level transmitter at current.
Various degree sensors
How does the water level sensor work?
The working principle of the water stage sensor is that when it’s positioned into the liquid to be measured at a certain depth, the strain on the entrance floor of the sensor is transformed into the liquid stage top. The calculation formula is Ρ=ρ.g.H+Po, the place 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 stress on the surface 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 degree sensors include the following applications.
Water stage measurement in swimming pools and tanks
Water stage measurement in rivers and lakes
Marine water degree measurement
Level measurement of acid and alkaline liquids
Oil degree measurement of oil vans and mailboxes
Swimming pool water degree control
Tsunami warning and sea level monitoring
Cooling tower water degree management
Sewage pump water degree management
Liquid stage distant monitoring
What are the advantages of water level sensors?
Simple construction: no movable or elastic parts, extraordinarily dependable, no common upkeep throughout use. Simple and straightforward to function.
Easy installation: When utilizing, first connect one finish of the wire appropriately, then put the opposite finish of the water stage probe into the answer to be measured.
เพรสเชอร์เกจnuovafima : It can measure the water degree inside the range of 1-200 meters, and other measurement ranges can also be customized.
Wide range of application: It is suitable for liquid stage measurement of high temperature and strain, strong corrosion, high air pollution and different 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 extensive, not affected by the blistering, deposition and electrical characteristics of the measured medium.
Long service life: common liquid degree sensor can be used in a traditional setting for 4-5 years, in a harsh environment can additionally be used for 2-3 years.
Powerful: can be directly linked to the digital show desk real-time display values, can be connected to a selection 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, accurately reflect the subtle changes in the move or static liquid stage, high measurement accuracy.
Various types: The liquid level sensor has numerous structure designs corresponding to input sort, straight rod type, flange type, threaded type, induction kind, screw-in sort, float type, and so forth. It can meet the measurement wants of assorted locations.
What are the kinds of water stage sensors?
Here are 9 types of liquid degree sensors on your reference.
Display of various liquid degree sensors
Magnetic flap level gauge
Magnetic flip stage gauge (also often identified as magnetic float level 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 physique tube of the extent gauge additionally rises and falls. The permanent magnetic metal within the float is transferred to the magnetic flip column indicator by way of magnetic coupling, driving the pink and white flip column to show 180°. When the liquid degree rises, the flip column changes from white to red, and when the liquid stage drops, the flip column changes from purple to white. The purple and white junction of the indicator is the actual top of the liquid degree inside the container, so as to understand a clear indication of the liquid degree.
Magnetic flap stage gauge picture
Characteristics:
Wide range of utility, 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 degree measurement under high strain, high temperature and corrosion situations.
Set subject indication, remote transmission, alarm control about one and can be adjusted freely, absolutely useful dual-color indication with luminous, continuous and intuitive, eye-catching, giant measurement range, remark course may be arbitrarily modified.
Good vibration resistance, can adapt to the situation of liquid stage fluctuation simple construction, handy installation, low upkeep price.
With fine magnetic metal corrector, on-site adjustment of technical parameters.
Optical water stage 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 change. 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 useful in conditions the place adjustments in condition have to be recorded shortly and reliably, and the place they’ll operate reliably for long durations with out maintenance.
Optical water degree sensor picture
Advantages: non-contact measurement, excessive accuracy, quick response time.
Disadvantages: Do not use in direct daylight, water vapor will affect 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 stage 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 same top, 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 should be recorded, and the level is then displayed using 0% and 100 percent 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 relies on the precept that the static strain of the measured liquid is proportional to the height of that liquid, and uses an isolated diffusion silicon sensitive element or ceramic capacitive pressure delicate sensor with wonderful efficiency to convert the static stress into an electrical signal, which is then converted 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 as much as zero.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 whole allowable working temperature vary.
With reverse protection, current limiting protection circuit, within the installation of optimistic and adverse polarity connection won’t harm the transmitter, irregular transmitter will automatically limit the current within 35MA.
Solid construction, no moving elements, excessive reliability, lengthy service life.
Easy to install, easy construction, financial and durable.
Tuning fork stage sensor
The tuning fork level meter is a liquid level level switching software designed using the tuning fork principle. The working principle of the swap 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 expounded to the size, mass, shape, and drive of the object. 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: could 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 stage switches depend on air pressure to push the diaphragm, which engages a microswitch contained in the body of the system. As the extent will increase, the stress in the detection tube will increase till the microswitch is activated. As the level drops, the air stress additionally drops and the swap opens.
Diaphragm liquid level sensor picture
Advantages: The tank does not require electrical energy, can be used with a variety of liquids, and the swap does not come into contact with the liquid.
Disadvantages: upkeep is required over time as a result of it is a mechanical system.
Float water level sensor
Float level switches are the unique level sensors. They are mechanical units. A hollow float is hooked up to the arm. As the float rises and falls in the liquid, the arm shall be pushed up and down. The arm may be connected to a magnetic or mechanical change to discover out 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 effective method to measure water ranges in basement pumping pits.
Float water stage sensor picture
Advantages: Float switches can measure any type of liquid and may be designed to operate with none energy supply.
Disadvantages: They are bigger than different types of switches, and since they are mechanical, they must be used more regularly than other stage switches.
Ultrasonic liquid stage sensor
The ultrasonic stage meter is a digital stage meter managed by a microprocessor. In the measurement, ultrasonic pulses are emitted by a transducer (transducer). The sound waves are mirrored by the liquid stage and received by the same 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 gap to the liquid surface.
Ultrasonic liquid level sensor image
Ultrasonic water level 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 acquired by the sensor. Transducer and converted into an electrical sign. The propagation time of the sound wave. It is proportional to the gap of the sound wave to the floor of the thing. Sound wave propagation distance S with the velocity of sound C and sound propagation time T can be expressed within the formulation: S = C × T / 2.
Advantages: non-contact measurement, the measured medium is almost unlimited, 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 degree gauge is a degree measurement instrument based mostly on the time travel precept. The radar wave travels at the speed of light and the travel time can be converted right into a stage sign by electronic components. The probe emits excessive frequency pulses traveling at the pace of light in space. When the pulses encounter the floor of the fabric, they are mirrored and obtained by the receiver inside the instrument, changing the space signal right into a stage sign.
Radar level gauge picture
Advantages: wide range of application, unaffected by temperature, mud, steam, and so on.
Disadvantages: simple to generate interference echoes, affecting the measurement accuracy.
Conclusion
In many industrial applications, one of the essential parts of process control is understanding how a lot gas or liquid is present in a given vessel. There is a need to make certain that the fill degree of a given substance doesn’t overflow. Therefore, stage measurement transmitters play an essential role in monitoring the liquid level of a vessel, container or tank. For further questions or necessities please contact our skilled engineers..
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Table of Contents
What is water stage sensor?
How does the water level sensor work?
Where to use water degree sensors?
What are the benefits of water level sensors?
What are the kinds of water stage sensors?
Magnetic flap stage gauge
Optical water stage sensor
Capacitance liquid stage sensor
Hydrostatic level transmitter
Tuning fork degree sensor
Diaphragm liquid level sensor
Float water degree sensor
Ultrasonic liquid level sensor
Radar level gauge
Conclusion
What is water stage sensor?
Water stage sensor is a tool that measures the excessive or low level of a liquid in a hard and fast vessel. According to the method of liquid level measurement, there are two kinds of contact and non-contact. What we call enter water stage transmitter is a contact measurement, which converts the peak of liquid stage into electrical sign output. It is a broadly used water degree transmitter at current.
Various degree sensors
How does the water stage sensor work?
The working precept of the water level sensor is that when it is placed into the liquid to be measured at a sure depth, the pressure on the front surface of the sensor is transformed into the liquid degree peak. 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 native 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 use water level sensors?
Uses of water stage sensors embody the following purposes.
Water stage measurement in pools and tanks
Water stage measurement in rivers and lakes
Marine water stage measurement
Level measurement of acid and alkaline liquids
Oil stage measurement of oil trucks and mailboxes
Swimming pool water stage management
Tsunami warning and sea stage monitoring
Cooling tower water level control
Sewage pump water stage control
Liquid stage distant monitoring
What are the benefits of water stage sensors?
Simple structure: no movable or elastic elements, extremely reliable, no common upkeep during use. Simple and easy 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 solution to be measured.
Range optionally available: It can measure the water degree throughout the range of 1-200 meters, and other measurement ranges can be custom-made.
Wide vary of application: It is appropriate for liquid degree measurement of high temperature and strain, strong corrosion, excessive pollution and other media.
Wide vary of measuring medium: from water, oil to high 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 used in a standard surroundings for 4-5 years, in a harsh setting can also be used for 2-3 years.
Powerful: can be directly related to the digital display desk real-time show values, can be connected to quite a lot of controllers to set the higher and decrease limits to control the amount of water in the container.
Accurate measurement: built-in high-quality sensors, high sensitivity, quick response time, accurately reflect the subtle changes in the flow or static liquid level, excessive measurement accuracy.
Various varieties: The liquid stage sensor has numerous construction designs such as enter kind, straight rod type, flange sort, threaded type, induction sort, screw-in sort, float kind, etc. It can meet the measurement needs of various locations.
What are the forms of water degree sensors?
Here are 9 types of liquid stage sensors in your reference.
Display of varied liquid level sensors
Magnetic flap level gauge
Magnetic flip degree gauge (also known as magnetic float degree gauge) based mostly on the buoyancy precept and magnetic coupling developed. When the liquid stage within the measured container rises and falls, the magnetic float within the physique 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 degree rises, the flip column changes from white to pink, and when the liquid stage drops, the flip column changes from red to white. The red and white junction of the indicator is the actual peak of the liquid degree inside the container, so as to understand a transparent indication of the liquid level.
Magnetic flap stage gauge image
Characteristics:
Wide range of utility, set up of varied varieties, appropriate for any medium degree, interface measurement.
The measured medium is completely isolated from the indicating structure, with good sealing performance, leakproof, and high reliability for liquid stage measurement beneath high stress, excessive temperature and corrosion circumstances.
Set field indication, distant transmission, alarm control about one and may be adjusted freely, fully useful dual-color indication with luminous, continuous and intuitive, eye-catching, large measurement vary, statement direction could be arbitrarily modified.
Good vibration resistance, can adapt to the situation of liquid stage fluctuation simple construction, handy installation, low upkeep value.
With nice magnetic steel corrector, on-site adjustment of technical parameters.
Optical water level 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 mild escapes, causing 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 situations where adjustments in condition have to be recorded quickly and reliably, and where they’ll operate reliably for lengthy intervals without 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 stage 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 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 height, 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 have to be recorded, and the level is then displayed utilizing 0% and 100 percent 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 precept that the static pressure 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 strain delicate sensor with excellent efficiency to convert the static pressure into an electrical signal, which is then transformed into a standard electrical signal (generally 4-20mA/1-5VDC) after temperature compensation and linearity correction.
Hydrostatic degree transmitter picture
Characteristics
Good stability, full degree, zero long-term stability up to zero.1%FS/ yr. The temperature drift is lower than zero.1%FS in the compensation temperature vary from zero ℃ to 70 ℃ and fewer than zero.3%FS in the entire allowable working temperature range.
With reverse safety, present limiting protection circuit, within the set up of positive and adverse polarity connection will not harm the transmitter, irregular transmitter will automatically restrict the present inside 35MA.
Solid structure, no shifting parts, high reliability, long service life.
Easy to install, easy construction, economic and sturdy.
Tuning fork level sensor
The tuning fork level meter is a liquid point level switching device designed using the tuning fork precept. The working principle 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 expounded to the dimensions, mass, shape, and drive of the thing. A typical instance of the resonant frequency of an object is: the identical glass is repeatedly full of water of various heights and tapped to perform instrumental music.
Advantages: may be actually independent of flow, bubbles, kind of liquid, and so forth. No calibration is required.
Disadvantage: can’t be used for viscous media.
Diaphragm liquid degree sensor
Diaphragm or pneumatic level switches depend on air stress to push the diaphragm, which engages a microswitch inside the physique of the system. As the extent increases, the pressure in the detection tube increases until the microswitch is activated. As the extent drops, the air pressure also drops and the switch opens.
Diaphragm liquid stage sensor picture
Advantages: The tank doesn’t require electrical energy, can be used with a selection of liquids, and the switch 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 stage sensor
Float degree switches are the unique level sensors. They are mechanical units. A hollow float is attached to the arm. As the float rises and falls in the liquid, the arm will be pushed up and down. The arm may be related to a magnetic or mechanical swap to find out on/off, or to a level gauge that will go from full to empty as the level drops.
Float switches for water pumps are a price effective way to measure water ranges in basement pumping pits.
Float water degree sensor image
Advantages: Float switches can measure any sort of liquid and can be designed to operate without any energy source.
Disadvantages: They are bigger than other types of switches, and because they are mechanical, they must be used extra regularly than other stage switches.
Ultrasonic liquid stage sensor
The ultrasonic stage meter is a digital stage meter managed by a microprocessor. In the measurement, ultrasonic pulses are emitted by a transducer (transducer). The sound waves are mirrored by the liquid stage and received 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 gap to the liquid surface.
Ultrasonic liquid degree sensor image
Ultrasonic water level sensor works on the principle that the ultrasonic transducer (probe) emits high-frequency pulse sound waves when it encounters the measured degree (object) floor, is mirrored, and the reflected 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 gap of the sound wave to the floor of the thing. Sound wave propagation distance S with the speed of sound C and sound propagation time T could be expressed in the method: S = C × T / 2.
Advantages: non-contact measurement, the measured medium is nearly unlimited, and could be broadly used to measure the peak of varied liquids and stable materials.
Disadvantages: the measurement accuracy is affected by the present ambient temperature and mud.
Radar stage gauge
Radar degree gauge is a level measurement instrument based on the time travel principle. The radar wave travels on the pace of light and the travel time could be converted into a level signal by electronic elements. The probe emits high frequency pulses touring on the velocity of sunshine in area. When the pulses encounter the surface of the fabric, they’re mirrored and received by the receiver contained in the instrument, converting the gap signal right into a degree signal.
Radar level 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 purposes, one of the necessary components of process management is understanding how a lot fuel or liquid is current in a given vessel. There is a need to ensure 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 further questions or necessities please contact our skilled engineers..