Melted salt, reaching temperatures of around 460°C, creates a complex tank environment, especially when mixed with steam. Most level transmitters fail to operate under these harsh conditions.

Challenges of Measuring Melted Salt Levels:

• High Temperatures: Melted salt can reach up to 460°C, making it hard for standard devices to operate reliably.
• Steam Interference: The presence of steam in the tank creates a complex environment, which can interfere with measurement signals.
• Tank Conditions: The frequent temperature fluctuations and regular start-ups can affect the accuracy of level measurements.
• Material Properties: The molten state of salt presents a challenge, different from measuring solid or regular liquid states.
• Equipment Durability: Many devices aren’t built to withstand the extreme conditions inside a melted salt tank over extended periods.
• Accuracy: Precise measurements are crucial, but many transmitters can’t maintain consistent accuracy under these conditions.
• Safety Concerns: Due to the high temperatures and nature of melted salt, there’s a heightened need for safe measurement methods.
• External Factors: Outside atmospheric conditions, like pressure and humidity, can also influence measurement reliability.

In such a demanding setting, it’s vital to have equipment specially designed to overcome these challenges, ensuring safe and accurate level measurements.

Sino-Inst’s Solution:

After extensive site inspections and numerous tests, Sino-Inst introduced a customized high-temperature radar level transmitter. This new device can measure liquid levels in temperatures from 300°C to over 1000°C, even in tough environments. It’s a big advancement in level measurement technology.

Working Conditions and Environment:

• Ambient temperature range: -35℃ to 80℃
• Relative humidity: ≤95%
• Atmospheric pressure: 86～108KPa
• Medium temperature: 400-595℃
• Medium: Molten Salt

Performance Indicators:

1. Measurement accuracy within the full range: <±0.1%, display resolution: ±1mm
2. Protection level of the transmitter: IP67
3. Response time under 200ms, tracking rapid changes in tank levels.
4. Resistant to design pressure 1.5 times during a water pressure test.

Considering the environmental and working conditions of the solar molten salt tower-type thermal power molten salt tank, Sino-Inst selected the best products for precise, stable measurements. The 80G high-frequency high-temperature radar level gauge was chosen with specific features:

• Enhanced with a cooling system and heat dissipator to ensure stable operation.
• Equipped with a convex lens to prevent adhesion, ensuring measurement accuracy.
• Radial measures that are narrow, facilitating easy installation and stability.

Key Advantages:

1. Unaffected by atmospheric precipitation
2. Measures boiling liquid levels
3. Installation outside storage tanks
4. Internal antenna with fluoroplastic lens heating protection
5. Accurate level measurement not limited by internal temperatures
6. Evaporation and dust don’t affect measurement
7. Operates in ambient temperatures from -60°C to 70°C and process temperatures up to 1200°C
8. Corrosive liquid level measurement without contact, ensuring stable measurements.

Technical Principle:

The radar level transmitter operates on the principle of time travel. It emits high-frequency pulses at the speed of light, which, upon striking the surface of the material, are reflected back and received by an internal receiver. This distance signal is then converted into a level signal.

Read more about: Radar Level Measurement: Measuring Principle

Applications:

More Featured Radar Level Meters

More Level Measurement Solutions

If the temperature of the medium you happen to measure is relatively high, you cannot find a suitable liquid level gauge. Or you feel that the measurement accuracy of the liquid level gauge you are using is not accurate. Welcome to choose our high temperature radar level meter, you will be satisfied.

We Sino-Inst is the manufacturer of radar level meter. We offer over 30 Radar level transmitters for level measurement. About 50% of these are 80G Radar level meters.

Sino-Inst, with our vast experience as a manufacturer and supplier, is at the forefront of introducing innovative solutions for complex challenges.

For reliable and advanced high-temperature radar level transmitter solutions, choose Sino-Inst – Your trusted partner in precision and innovation. Contact us now for customized solutions!

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Ultrasonic level transmitter working principle and frequency range

Ultrasonic level transmitter is a cost-effective liquid level measuring instrument. It is mainly composed of three parts: transducer, electronic module and housing. The transducer is one of the core components, and the working frequency of the transducer is one of the important parameters.

Ultrasonic pulses are emitted by sensors (transducers) during the measurement. The sound waves are reflected by the liquid surface and picked up by the same sensor. Converted into electrical signals by piezoelectric crystals. And the distance between the sensor and the surface of the liquid to be measured is calculated by the time between the emission and reception of the sound wave.

The selection of the operating frequency of the ultrasonic transducer is a very important parameter. It is not only directly related to the frequency characteristics and directional characteristics of the transducer. It also affects important performance indicators such as the transmitting power and transmitting efficiency of the transducer. In general, the working frequency of the ultrasonic level gauge is consistent with the working frequency of the ultrasonic transducer.

Working frequency is an important parameter of ultrasonic liquid level gauge. During the production of each ultrasonic sensor of Sino-Inst, the working frequency and impedance characteristics of the transducer are strictly measured and recorded to ensure product quality.

Featured Ultrasonic Level Transmitters

Principles of Ultrasonic Level Transmitter installation

When you’re installing an Ultrasonic Level Transmitter, in addition to meeting the installation requirements, there are certain principles to consider:

• The distance from the probe’s emission surface to the low liquid level should be less than the range of the purchased transmitter.
• The distance from the probe’s emission surface to the high liquid level should be greater than the blind zone of the purchased transmitter.
• The probe’s emission surface should remain parallel to the liquid surface.
• The location of the probe’s installation should ideally avoid areas directly below inlets and outlets where the liquid surface experiences significant fluctuations.
• If the pool or tank wall is not smooth, the transmitter’s installation location should be more than 0.3m away from the wall.
• If the distance from the probe’s emission surface to the high liquid level is less than the blind zone of the purchased transmitter, an extension tube should be installed. The extension tube should have a diameter greater than 120mm, and a length between 0.35m and 0.50m. It should be installed vertically, have a smooth inner wall, and the opening in the tank should be larger than the extension tube’s inner diameter. Alternatively, the tube can extend to the bottom of the tank and should have a diameter greater than 80mm. Holes should be left at the bottom of the tube to keep the internal liquid level of the extension tube at the same height as inside the tank.

Basic Requirements for Ultrasonic Level Transmitter Installation

Before installing an ultrasonic level transmitter, make sure the instrument model meets the environmental requirements of the site, such as process pressure, process temperature, and chemical properties of the medium. This will ensure normal operation after installation.

Ultrasonic level transmitters have a certain emission angle when transmitting ultrasonic pulses. There should be no obstacles within the radiating area of the emitted ultrasonic beam from the lower edge of the ultrasonic transducer to the surface of the medium being measured. This requires avoiding internal facilities such as ladders, heating equipment, and limit switch brackets during installation.

Moreover, note the following when installing an integrated ultrasonic level transmitter:

• Because of the sound beam angle, the ultrasonic beam should not intersect with the feed flow. Therefore, do not install the integrated ultrasonic level transmitter above the feed flow to ensure measurement of the medium surface and not the feed flow. Make sure the highest material level does not enter the measurement blind zone during installation.
• The integrated ultrasonic level transmitter must maintain a certain distance from the tank wall.
• The installation of the integrated ultrasonic level transmitter should aim to keep the transducer vertical to the liquid surface.
• When installing the instrument outdoors, sunshade and rain protection measures should be adopted to avoid direct sunlight and reduce measurement errors caused by temperature changes.
• The integrated ultrasonic level transmitter installed in hazardous areas must comply with national explosion-proof hazardous area installation regulations. In places where explosion-proof requirements are needed, the ultrasonic level transmitter must be grounded.

Other Requirements for Ultrasonic Level Transmitter Installation

• Installation location: Keep the integrated ultrasonic level transmitter at least 200mm away from the tank wall. For a conical container with a flat tank top, install the instrument at the central position of the container top. This ensures measurement to the bottom of the container. For an arch-shaped tank, install it at 1/2 or 2/3 of the tank top radius. For trenches, take into account the load-bearing capacity of the bracket when installing. The probe emission angle should not exceed the A point boundary. The installation height must be within the range.
• Moisture proofing: If the instrument is installed outdoors, in a humid indoor environment, or on the top of a refrigeration or heating tank, the environment is humid. Rainwater and condensation can flow down. To prevent moisture, before connecting the cable, please bend the cable and lead it downwards to prevent water or moisture from entering the instrument. Tighten the cable sealing sleeve.
• Stirring effects: If there is stirring in the tank, the integrated ultrasonic level transmitter should be away from the stirrer to eliminate the false echo effect caused by the stirring blades. If foam is generated due to stirring or waves are turned up, use the guide wave tube installation method.
• Foam effects: During feeding, stirring, or other treatments in the container, foam can form on the surface of some media, causing the ultrasonic level transmitter signal to attenuate. To avoid measurement errors caused by foam, install the sensor in the guide tube or use a guided wave radar level gauge. The guided wave radar level gauge is not affected by foam and is an ideal choice for this type of application.
• Airflow effects: If there is a strong airflow or air vortex in the container, or it is installed outdoors and the wind is strong, install the sensor in the guide tube or use a guided wave radar level gauge.

Ultrasonic Level Transmitter Installation method:

In open environments, installation is generally achieved using a bracket, securing the device with the included locknut. Alternatively, you can drill a circular hole with a diameter of 60mm at the desired installation spot on the top of the tank or lid, and place the device in it. Then, tighten the locknut from underneath.

It is crucial to ensure that the face of the transmitter’s probe is parallel to the liquid surface being measured.

As illustrated, the probe of the device emits waves that reflect back upon hitting the liquid level. The probe calculates the time taken from emission to reception of these waves to determine the measured empty distance, H.

Subtracting the measured empty distance H from the installed height TH gives you the current liquid level, L. The transmitter’s range is the distance it can measure, and the installed height TH should be less than this range.

The device’s blind zone is the area near the probe that cannot be measured. The distance between the highest liquid level and the probe should be greater than the blind zone. For instance, if the blind zone is 0.5m, the distance between the highest liquid level and the probe must be more than 0.5m.

For example: If the range is 6 meters, the blind zone is 0.45 meters, the actual maximum measurable liquid level is between 0 to 5.5 meters. The emission of waves from the probe is a diffusion process, meaning it has a directional angle. Pay attention during installation to avoid hitting protrusions on the pool wall or the edge of the channel.

More Level Measurement Solutions

Ultrasonic Level Transmitter is a widely used level meter. When installing, pay attention to meet the installation requirements, including the environmental requirements of the site, avoiding the facilities in the tank, ensuring that the highest material level does not enter the measurement blind area, and the requirements of the installation location.

When installing an ultrasonic level gauge, installation principles must also be considered. The emitting surface of the probe should be kept parallel to the liquid surface, and the installation position of the probe should avoid the position where the liquid level fluctuates violently, etc.

Sino-Inst is a professional supplier of Ultrasonic Level Transmitter. Our Ultrasonic Level Transmitter is exported to various countries around the world. If you have any questions about Ultrasonic Level Transmitter Installation, please feel free to contact our Sino-Inst technical engineers.

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What is Liquid Level Sensor Probe?

We can understand that a level meter is composed of a probe and a transmitter. Liquid Level Sensor Probes detect the amount of liquid in a specific space, like a tank or a bottle. They’re vital because they help monitor and control the amount of liquid, making sure there’s not too much or too little. This control keeps systems running smoothly and safely, saving both time and money.

For example, Capacitance sensing probe devices for measuring liquid level and converting it to an electrical signal to send to other instrumentation.

You may also have seen straight rod probes, cable probes, and coaxial probes. Or PTFE non-contact probe. Then, according to our many years of experience, Liquid Level Sensor Probes can be classified from several aspects. That is: working principle and material.

From the material point of view, it is easy to understand. It only needs to be compatible with the measured liquid. For example, to measure sulfuric acid, the probe is generally made of anti-corrosion material, such as PTFE. Therefore, when we select enough level meters, we only need to inform the manufacturer of the compatible materials of the measured medium.

Next, let’s look at different types of Liquid Level Sensor Probes from the working principle.

Types of Liquid Level Sensor Probes

Float Level Sensor Probes

Float Level Sensors are widely used in applications where accurate liquid level measurements are needed. Common scenarios include water tanks, where they help in maintaining the desired water level; fuel systems, to monitor fuel storage; sump pumps, to prevent flooding.

Their simplicity and reliability make them suitable for many liquid monitoring tasks.

Capacitive Liquid Level Sensor Probes

Capacitive Liquid Level Sensor Probes work on the principle of detecting changes in electrical capacitance caused by the presence of a liquid. The sensor probe forms one plate of a capacitor, and the liquid acts as a dielectric material. Changes in the level of the liquid alter the capacitance, providing a measure of the liquid’s level.

Typical applications include the food and beverage industry, pharmaceuticals, and chemical processing, where non-contact, versatile liquid level sensing is needed, particularly with non-conductive or high-temperature fluids.

Ultrasonic Level Sensor Probes

Ultrasonic Level Sensor Probes function by emitting sound waves at ultrasonic frequencies. These waves bounce off the surface of the liquid and are detected by the sensor. By calculating the time taken for the sound waves to return, the distance to the liquid surface, and hence the level, is determined.

Ultrasonic sensors are commonly used in wastewater treatment, oil and gas industries, and irrigation systems, where non-contact measurement is preferred. Their capability to work with dirty or corrosive liquids makes them valuable in such applications.

Radar Level Sensor Probes

Radar Level Sensor Probes operate using radio waves. A radar pulse is transmitted, which reflects off the surface of the liquid and returns to the sensor. By measuring the time it takes for the pulse to travel to the liquid and back, the distance, and therefore the level, is calculated.

Radar sensors are highly accurate and can work in extreme conditions, making them suitable for the chemical industry, large industrial tanks, and marine applications. Their adaptability allows for usage with various liquids, even in challenging environments.

Magnetostrictive Level Sensor Probes

Magnetostrictive Level Sensor Probes operate by detecting changes in the magnetic alignment within a sensing element. A current pulse generates a magnetic field, interacting with a magnetic float, causing a torsional strain wave. The time taken for this wave to travel is measured, determining the liquid level.

Known for high precision and robust design, these sensors are typically used in petrochemical industries, pharmaceutical manufacturing, and cryogenic applications. Their ability to function in hazardous environments adds to their appeal in these specialized areas.

Hydrostatic Level Sensor Probes

Hydrostatic Level Sensor Probes work by measuring the pressure exerted by the liquid at a specific depth, which corresponds to the liquid’s level. The weight of the liquid creates pressure, which the sensor translates into a level reading.

These probes are often utilized in water treatment facilities, sewage systems, deep wells, and fuel tanks.

Their straightforward principle and reliability make them suitable for environments where liquid density is consistent, and there might be slurry or muddy substances, as they can handle such conditions effectively.

How to Select the Right Liquid Level Sensor Probe

Selecting the right Liquid Level Sensor Probe is essential for accurate and reliable measurements. Here’s a simple guide to help you choose the best option for your needs:

Understanding Your Needs:

• Liquid Type: Identify if the liquid is conductive, non-conductive, sticky, or corrosive.
• Measuring Range: Determine the maximum and minimum levels that need to be monitored.
• Environmental Conditions: Consider factors like temperature, pressure, humidity, etc., that may affect the sensor.

Evaluating Different Types:

• Material Requirements: Choose materials that are compatible with the liquid being measured, considering factors like corrosion resistance.
• Installation Size: Check the dimensions of the sensor to make sure it fits within the available space.
• Installation Space: Consider the physical layout of the area where the sensor will be installed.
• Signal Output and Signal Control: Determine the type of output needed (analog, digital) and if any specific control features are required, like alarms.

Consideration for Installation and Maintenance:

• Ease of Installation: Look for sensors that can be installed without specialized tools or expertise.
• Maintenance Needs: Understand the cleaning and servicing needs, as some sensors might require more regular maintenance.

By taking these factors into consideration, you can find a Liquid Level Sensor Probe that meets your specific requirements and provides consistent, accurate performance. Remember to consult with experts or refer to detailed product specifications for the best results.

Client Case: Measuring Sulfuric Acid Tanks

We were approached by a customer looking to measure the liquid level in open concrete tanks containing bath acid sulfuric acid. The specific parameters provided were:

• Measured Medium: Bath acid sulfuric acid
• Tank Measurement Range: 2 meters
• Temperature and Pressure: Ambient; maximum atmospheric temperature 30°C
• Mounting Dimensions: 1 1/2″ NPT

After understanding the requirements, we configured the following solution for accurate and reliable measurements:

Radar Level Meters – 80G:

• Application: Measuring the liquid level in sulfuric acid tanks
• Antenna Material: PTFE, for excellent resistance to acid
• Temperature Resistance: -40 to 80℃, suitable for ambient conditions
• Pressure: -0.1 to 0.3MPa, aligning with atmospheric pressure
• Mounting Dimensions: 1 1/2″ NPT PTFE Coated, matching customer’s specifications
• Display: Digital, with measurement and programming capabilities
• Power Supply: 24VDC
• Output: 4-20mA (two wires) + HART
• Electrical Connection: 1/2″ NPT head

This configuration met the customer’s specific needs for measuring sulfuric acid, providing a solution that is both reliable and tailored to their application. The client was satisfied with the performance, praising the gauge’s accuracy and ease of use.

More Liquid level measurement Guides

Selecting the right Liquid Level Sensor Probe is a critical task, and the various types mentioned offer unique advantages and considerations. Understanding your specific needs and working with an experienced manufacturer can ensure the best solution for your application.

At Sino-Inst, we pride ourselves on being not only an experienced manufacturer but a knowledgeable supplier as well. With years of expertise in the field, we provide tailored solutions to meet your unique needs, even offering customization to align perfectly with your requirements.

If you’re in need of a Liquid Level Sensor Probe, don’t hesitate to reach out to us. Our team is here to assist you in selecting the right product, ensuring efficiency, reliability, and satisfaction. Contact us today and let us be your trusted partner in your liquid level measurement needs.

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Portable Ultrasonic Level Indicator

Our Portable Ultrasonic Liquid Level Indicator for tank is designed to determine the presence or absence of the liquid at a certain height in a container or in pipeline. The liquid containers to be measured can be made of various kinds of materials such as metal, glass or un-foamed plastics.

Under ordinary conditions, the maximum wall thickness of measured containers is 30mm. The indicator can be used to detect various types of liquids (without crystallization or other particulate matter). Because of the innovative non-contact detection methods, this liquid level indicator is an ideal choice for the detecting dangerous toxic or corrosive liquids.

Features

• No physical contact with medium
• Suitable for toxic, corrosive, or invasive media
• No need for drilling or welding on tank wall
• Simple and convenient to operate and maintain
• Ultrasonic adaptive detection algorithm.
• High-contrast OLED color display, suitable for outdoor use under strong light
• Intuitive user interface design
• Comprehensive software displays measurements simply and clearly

Applicable CO2 Tanks/Cylinders/Bottles

CO2 Tank with any of the following diameter ranges:

210mm-230mm, 265mm-285mm, 340mm-360mm, 390mm-410mm

Common Tank: 

All tanks outside the above tank diameter ranges can be considered as common type.
vertical tank / horizontal tank / spherical tank(diameter <3M)
The indicator has no requirement towards medium, height and pressure.

Parameters

Measurement accuracy	< 5mm
Measurable range of wall thickness	3~30 mm
Measurable tank material	Steel, stainless steel, glass, unformed plastics
Measurable medium	Pure liquid, milky liquid, suspension liquid
Ambient temperature	-20℃〜60℃ (-4℉〜+140℉)
Ambient humidity	15% ~ 85% RH
Power supply	Two lithium batteries (supplied by customers)
Current	100 mAh (on average)

Ultrasonic CO2 Level Indicator CO2 Tank Measurement

CO2 cylinder specifications (external diameter division):

The CO2 cylinders measured by this meter are divided into the following 4 specifications:

215mm-225mm diameter cylinders,
270mm-280mm diameter cylinders,
345mm-355mm diameter cylinders,
395mm-405mm diameter cylinders.

There are no excessive requirements for the height of the medium and the tank.

CO2 cylinder measurement operation:

• Select “co2 cylinder”-“Choose a suitable cylinder diameter” through the menu and enter the measurement interface.
• Hold the probe vertically and tightly on the tank, and press the button to measure.
• Measurement results are based on measurement parameters and level indicator lights (red is “no liquid”, green is “with liquid”)
• Generally, the measurement is started from the bottom of the storage tank (measurement with liquid position). If the measurement parameter is> = 2, the current level is considered to be a liquid-free position, and <2 is considered to be a liquid level; if it is floatingaround 2, It is considered that the liquid level of the horizontal plane is approaching the liquid surface (usually about 5 cm).
• Take multiple points on the same horizontal plane for measurement, and take the result with the highest probability as the final result (avoid the interference of welds and unknown factors).
• Find the liquid level position step by step through theapproximation measurement.

CO2 cylinder measurement Note:
Due to the irregular air outlet and a large number of welding kits at the top of the co2 cylinder, the measurement results at the bottom and top are invalid. (The top is generally empty in the case of a full tank).

Please refer to the video below to understand the operation tutorial and case of Ultrasonic CO2 Level Indicator.

In addition to Ultrasonic CO2 Level Indicator, we have more applications of ultrasonic technology.

More Ultrasonic Prodcuts

Our Sino-inst Ultrasonic CO2 Level Indicator stands as a symbol of safety, precision, and efficiency in industrial applications. This superior device excels in assessing fire extinguishing systems, accurately measuring storage capacity with its non-contact det ection technology. It is versatile, handling various agents like Proto-Indo-European, halo-alkane, and CO2.

The safety advantages of this tool are unmatched, as it ensures no direct contact with toxic or corrosive liquids. Industries that prioritize safety, accuracy, and reliability find enormous value in our Ultrasonic CO2 Level Indicator. Whether for regular monitoring or spot checks, it provides dependable data, ensuring operations run smoothly and safely. Trust the Ultrasonic CO2 Level Indicator – it’s your partner in precision.

Our Ultrasonic CO2 Level Indicator is widely sold to various countries in the world. As an excellent and portable CO2 Bottle Level Measuring Device, it provides convenience for various industries such as fire protection. If you need, please feel free to contact Sino-Inst!

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Featured Radar Level Gauge Selection

Radar Level Gauges Measurement Technology

The general principle of the FM continuous wave radar level gauge is that the radar emits electromagnetic waves on the top of the tank, and the electromagnetic waves are received by the radar after being reflected by the medium.

The frequency difference δf between the received signal and the transmitted signal is proportional to the distance R from the surface of the medium: R=C (speed)*δf (frequency difference)/2/K (frequency modulation slope).

Because the speed of light C and the frequency modulation slope K are known, the frequency difference δf can be estimated to obtain the distance R from the radar installation position to the material surface. And then through the known total height of the tank, subtract the spatial distance from the radar to the material surface (referred to as Empty height) to get the height of the material level.

Advantages of Using Radar Level Gauges

1. Millimeter-wave radar, with a measurement accuracy of up to ±1mm, and a minimum blind area of 0.1m.
2. The smaller antenna size satisfies the measurement of more working conditions.
3. A variety of lens antennas, smaller launch angle, more concentrated energy, stronger echo signal, under the same industrial and mining conditions, compared to
   Other radar products have higher reliability.
4. With stronger penetrability, it can be used normally even if there is adhesion and condensation.
5. The dynamic signal range is larger, and the measurement of low dielectric constant medium is more stable.
6. 6. A variety of measurement modes, the radar reaction time in the fast measurement mode is less than 1S.

Applications of Radar Level Gauges Across Industries

Selection List

When choosing a radar level gauge, several factors need careful consideration to ensure that the gauge suits your specific requirements. Here’s a list to guide your selection process:

Selecting the right radar sensor requires careful evaluation of your specific needs based on the sensor’s capabilities. Here we take the selection data of one of the radar level gauges FMW21/21s as an example.

21/21s

ID：

License

P    Standard  (Non-explosion-proof) I     Intrinsically safe（Exia IIC T6 Ga） D    Flameproof（Ex db IIC T6 Gb）

Process Connection / Material

1     Flange≥DN80               X     Special customization

Antenna Type / Material

A  76mm Lens antenna / With purge port / PE B  76mm Lens antenna / With purge port / PTFE

Sealing / process temperature

A    FKM/（-40-80℃） B    FKM/（-40-150℃） C    FKM/(-40-200℃)                               Y     Special customization

he  Electronic Unit

1  （4~20）mA/HART protocol 24VDC   2-wire  2  （4~20）mA/HART protocol 220VAC   4-wire    3  （4~20）mA+RS485/Modbus protocol 12- 24VDC   6-wire

Shell material/protection grade

A   Cast aluminum / Single chamber / IP67 B   Cast aluminum / Double chamber / IP67 C   Cast aluminum / Double cavity side view / IP67 D   Plastic ABS / Single chamber / IP65 E   Stainless steel 304 / Single chamber / IP67 F    Stainless steel 304 / Double chamber / IP67

Cable Line

M   M20×l. 5 N    ½″ NPTX     Special customization

Display programming

A    Programming with display B    With display programming/ Bluetooth communication C    Without

Flange option / material

Specification / Code / Material	PP Universal	PTFE Universal	Stainless steel304 Universal	Stainless steel316L Universal
DN80	P4	F4	G4	S4
DN100	P5	F5	G5	S5
DN125	P6	F6	G6	S6
DN150	P7	F7	G7	S7
DN200	P8	F8	G8	S8

More Featured Radar Level Meters

In conclusion, radar level gauges are a sophisticated and highly reliable tool for non-contact level measurement across diverse industries.

At Sino-Inst, we understand the vital role that accurate level measurement plays in your operations. We’re an experienced manufacturer and supplier of radar level gauges.

Whether you’re looking for standard options or require customized solutions to meet unique requirements, our team is ready to assist. We’re committed to delivering high-quality products that contribute to the efficiency and success of your business.

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The Basics of Fluid Level Measurement

Let’s take a step back and delve into what fluid level measurement truly entails. The fluid can be anything – water in a reservoir, oil in a barrel, or a beverage in a production line. And the ‘tool’ we’re referring to? That’s the method of measurement.

Selecting the right method isn’t a random choice but requires careful consideration of both the fluid (target medium) and the container (vessel). Why? Because different fluids and containers can impact the measurement’s accuracy. Think about it this way – measuring the level of water in a glass is a much simpler task than assessing oil quantity in a massive industrial tank. The right method ensures the measurements are not only accurate but precise.

Now, let’s briefly introduce the main methods used for this purpose. There are six principal techniques, each boasting its unique strengths and limitations:

• Continuous Float Level Transmitters: Utilizes a float that moves with the fluid level, providing continuous measurement.
• Differential Pressure Transmitters: Measures the pressure difference at two points in the fluid, correlating it with the fluid level.
• Load Cells: Uses force measurement to deduce the fluid level.
• Radar Level Transmitters: Leverages radio wave technology to determine the fluid’s distance from the sensor, thus the fluid level.
• Radio Frequency (RF) Capacitive Level Transmitters: Employs the change in capacitance caused by the change in fluid level to provide measurement.
• Ultrasonic Level Transmitter: Sends ultrasonic pulses towards the fluid surface and calculates the fluid level based on the time it takes for the pulses to return.

With the basics covered, let’s delve deeper into these methods, their applications, and how to decide which one is the ‘perfect tool’ for your ‘task’. Stay tuned!

Traditional Methods of Fluid Level Measurement

Before we journey into the modern age of fluid level measurement, it’s worth taking a moment to appreciate the tried-and-true traditional methods that have served various industries for decades. Two of the most common methods include sight glass and hydrostatic pressure measurements.

Sight Glass Measurement

The sight glass method is a simple yet effective method for fluid level measurement. Picture a transparent tube attached to a tank, with the fluid level in the tube reflecting the fluid level in the tank. By observing the fluid in the sight glass, operators can visually estimate the fluid level in the tank.

The pros of this method are its simplicity and directness. There’s no need for complex calculations or advanced technology, making it both reliable and cost-effective. It’s especially useful for tanks containing multiple liquids of different densities, as the distinct separation layers can be easily seen.

However, the sight glass method also has its cons. Its simplicity can be a limitation in situations where precise measurement is necessary. Furthermore, it can be challenging to use in high-pressure tanks or with opaque or highly viscous fluids. Also, the physical wear and tear on the sight glass can lead to reading inaccuracies over time.

Hydrostatic Pressure Measurement

Hydrostatic pressure measurement operates on the principle that the pressure at any point in a fluid is directly proportional to its height. Thus, by measuring the pressure at the bottom of a tank, we can calculate the fluid’s height.

One of the key advantages of this method is its versatility. It can measure fluid levels in both open and closed tanks and handle various fluid types, from water to oil. Additionally, it offers consistent readings and can handle extreme temperatures and pressures.

Nevertheless, the hydrostatic method is not without its drawbacks. Changes in the fluid density can affect the accuracy of readings. Moreover, it requires regular maintenance and calibration to ensure accurate measurements, especially when dealing with corrosive or high-temperature fluids.

These traditional methods have laid a strong foundation for fluid level measurement. However, as with any technology, advancements were inevitable and necessary. Next, we’ll look at more sophisticated methods that leverage technological progress to improve accuracy and versatility in fluid level measurement. Stay with us!

Advanced Techniques in Fluid Level Measurement

Technological advancements have gifted the world of fluid level measurement with high-precision tools like ultrasonic sensors, radar measurement devices, and capacitive level transmitters. These tools elevate our ability to track fluid levels accurately and efficiently. Let’s learn more about them.

Ultrasonic Level Measurement

Ultrasonic level measurement capitalizes on sound wave technology. An ultrasonic sensor, located at the top of a tank, sends sound waves downward. When these waves hit the fluid surface, they bounce back to the sensor. The sensor then calculates the time taken for this round trip, which directly relates to the fluid level.

Pros: Ultrasonic sensors are non-contact devices, making them perfect for hazardous or corrosive fluids. These sensors are highly accurate and work well under various environmental conditions.

Cons: However, factors like a foamy fluid surface, intense turbulence, or heavy vapors can hamper the accuracy of ultrasonic measurements. Also, ultrasonic sensors are generally more expensive than traditional measurement methods.

Radar Level Measurement

Radar level measurement also uses the principle of echo, but instead of sound waves, it employs radio waves. These waves are released by a radar sensor, bounce off the fluid surface, and return to the sensor. The duration of this round trip helps calculate the fluid level.

Pros: Radar sensors are extremely accurate and can operate under a wide range of temperatures and pressures. They offer non-contact measurement, which is advantageous when dealing with dangerous or corrosive fluids.

Cons: While highly reliable, radar sensors are complex and more costly to install and maintain. They may also encounter difficulties in tanks with heavy internal structures due to signal interference.

Capacitive Level Measurement

Capacitive level measurement works by detecting changes in an electric field. A probe inserted into a tank forms one plate of a capacitor, with the tank wall (or a reference probe) serving as the other plate. As the fluid level changes, the dielectric constant changes, leading to a change in capacitance which can be measured and related to the fluid level.

Pros: Capacitive level transmitters are versatile, able to measure the levels of a wide range of fluids, including those that are corrosive, viscous, or have a low dielectric constant. They also function well in high-pressure or high-temperature environments.

Cons: However, they can be influenced by buildup on the probe or changes in the fluid’s dielectric constant. They also require regular calibration for maintaining their accuracy.

With these advanced techniques at our disposal, the landscape of fluid level measurement has broadened, offering more precision and flexibility than ever before. However, choosing the right method always depends on your specific requirements. In the following section, we’ll help guide you in making this choice. Stay tuned!

Choosing the Right Method for Fluid Level Measurement

In the world of fluid level measurement, some factors will influence the selection.

Type of Fluid: Different fluids have different properties that can affect the measurement accuracy. For instance, ultrasonic sensors may not be the best choice for highly viscous or foamy fluids due to signal dispersion. For such fluids, capacitive level transmitters might offer more reliable results.

Size of the Container: The size and shape of the container can also influence the choice of measurement method. For example, sight glass measurement might be perfect for small tanks, while radar or ultrasonic measurements could be better suited for large industrial tanks.

Environmental Conditions: The measurement method must also take into account environmental conditions. If the tank is in a high-temperature or high-pressure environment, robust methods like hydrostatic pressure or capacitive level measurement would be advantageous.

Industry Requirements: Lastly, industry-specific needs play a role. For instance, in the food and beverage industry, non-contact methods are often preferred to prevent contamination. While in the oil and gas industry, methods capable of withstanding corrosive materials are necessary.

More Level Measurement Solutions

In conclusion, there’s no one-size-fits-all solution in fluid level measurement. It’s a careful selection process that requires a deep understanding of the application, environment, and industry needs. By considering these factors and weighing the pros and cons of each method, you can make an informed decision that ensures accurate, reliable, and efficient fluid level measurement.

The world of fluid level measurement is both vast and varied. From traditional methods like sight glass and hydrostatic pressure to modern techniques employing ultrasonic, radar, and capacitive technologies, the tools at our disposal are as diverse as they are dynamic.

With Sino-Inst by your side, you get more than just a product – you get a commitment to quality, a dedication to precision, and most importantly, a partner who understands and respects the importance of your work.

Ready to take the next step in your fluid level measurement journey? Get in touch with us today. Let’s explore the possibilities together and unlock the full potential of fluid level measurement for your operations.

Contact Sino-Inst: Your trusted partner in fluid level measurement.

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The Challenges of Grain Storage

Grain storage, especially in large-scale silos for processing, presents a number of challenges:

• Maintaining Optimal Storage Conditions: This is crucial for preserving grain quality and preventing spoilage.
• Monitoring Levels: Ensuring bins are neither overfilled nor underfilled is necessary to avoid waste and maintain operational efficiency.
• Managing Large Quantities: Industrial silos often contain vast quantities of grain, making it difficult to monitor levels accurately.
• Ensuring Safety: Overfilled or underfilled bins can lead to safety issues, like structural damage to the silos or poor grain circulation leading to spoilage.
• Protecting Profits: All of these challenges, if not managed effectively, could lead to inefficiencies, increased costs, and reduced profits.

The Grain Bin Level Indicator offers a solution to these issues, helping to improve the grain storage and processing system.

Grain Bin Level Indicator: A Game-Changer in Grain Storage

The Grain Bin Level Indicator is a technological marvel in grain storage management. This device provides real-time level monitoring, sending alerts when the grain reaches a specified level. No more guesswork, no more wasting hours manually checking levels.

Not convinced yet? Let’s dig a little deeper into the workings and benefits of this amazing product.

Grain Bin Level Indicators, also known as level sensors, come in different varieties to suit various applications. Here’s an overview of some common types and their working principles:

Type of Sensor	Working Principle	Advantages	Limitations
Capacitance Level Sensors	Measures changes in an electrical field to determine grain level	Reliable and accurate, suited to a variety of grains	May require calibration for different types of grain
Rotary Level Indicators	Uses a rotating paddle that, when obstructed by grain, stops and sends a level signal	Simple and cost-effective	Mechanical parts may wear out over time
Ultrasonic Level Sensors	Uses sound waves; the time for a pulse to bounce back indicates the grain level	Accurate, no moving parts, suitable for large bins	Can be affected by dust and other atmospheric conditions
Radar Level Sensors	Uses radio waves; like ultrasonic sensors, measures the time for a pulse to return	Very accurate, not as affected by atmospheric conditions as ultrasonic sensors	Can be more expensive than other options
Vibrating Rod Level Sensors	Vibrates at a certain frequency; when grain dampens the vibration, it sends a level signal	Reliable and accurate, simple to install and use	May not be suitable for extremely light or fluffy grains

It’s important to note that different types of grain bin level indicators are suited to different applications and types of grains. Choosing the right one depends on your specific needs and circumstances. For more details about these indicators, their advantages, and how they can be integrated into your grain storage system, feel free to contact our team at Sino-Inst.

Unveiling the Power of Grain Bin Level Indicators

To appreciate the power of grain bin level indicators, consider this: A study by Purdue University revealed that grain spoilage and mishandling account for over $2.5 billion in losses annually in the US alone. This is where grain bin level indicators can make a real difference.

By providing accurate, real-time level data, these devices can prevent overfilling, reduce spoilage, and ultimately increase profitability. Moreover, grain bin level indicators are versatile, easy to install, and can be integrated into existing storage management systems.

Remote Level monitoring

It is necessary to realize the remote transmission display of the granary material level. There are three possible ways.

1. Add a split monitor. General level meter as for a local display. But a monitor can be added if desired. Level meter mounted on top of tank with local display. A second display is mounted on the bottom of the tank. It is convenient for the staff to check the level and debug.
2. Signal output. A general level meter can support 4-20mA or RS485 signal output. The output signal can be wired to the control room. Monitoring software for connection to PLC, DCS or user.
3. Wireless IoT. With the addition of accessories such as a wireless gateway, the level meter can output the level signal through a wireless signal for a long distance. Such as GPRS, 4G, LoRA, etc.

More Tank Level Measurement Solutions

In conclusion, grain bin level indicators are the missing piece in your grain storage solution. These devices, though small and simple, can revolutionize the way you manage your grain storage, saving you time, money, and unnecessary stress.

At Sino-Inst, we are a trusted manufacturer and supplier with years of experience in providing solutions to farming challenges. Our grain bin level indicators are customizable to suit your specific needs. Contact us today to discover how our products can transform your farming operations.

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Radar Liquid Level Sensors Products

Understanding Radar Liquid Level Sensors

Read more : Advantages Of Radar Water Level Meters

Related Level Measurement Solutions

More Liquid level measurement products

Extended Reading: Case: High Temperature Radar Level Transmitter for Melted Salt-Solar Photovoltaic Power Station

Related Tools

Converter Tools used to convert and calculate liquid level values or for calculations that require liquid level measurement to obtain other measurement parameters. Help users choose suitable Level sensors and transmitters!

Liquid Level Transmitter 4-20mA Current Output Calculator	Liquid Depth/Level to Hydrostatic Pressure Calculator	Pressure to Liquid Level Calculator
Specific Gravity Calculator	Horizontal Cylindrical Storage Tank Contents/Volume Calculator	Rectangular Shaped Tank Liquid Volume/Contents Calculator
Vertical Cylindrical Tank Volume/Contents Calculator	Depth/Level Unit Converter	Volume Unit Converter

Radar liquid level sensors play a crucial role in many industries. By choosing a reliable manufacturer and the right type of sensor, you can significantly improve your liquid level measurement and control processes.

At Sino-Inst, we’re a leading manufacturer and supplier of radar liquid level sensors. We offer a wide range of products to meet various industry needs and provide exceptional customer service. For more information or to purchase, please contact us.

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Featured Radar Level Meters

Types of Radar Antennas

Radar level meters are tools that we use to measure the level of liquids, slurries, or granules without touching them. They’re pretty versatile and work well in places where temperatures and pressures change a lot, or where there are gases that don’t react to chemicals or things that can evaporate easily. They work using pulses of microwave radiation and can function in the range of usual industrial frequencies. Plus, they’re safe to use as they don’t emit a lot of energy and can be placed in all sorts of containers or pipes, whether they’re metal or not, without causing harm to people or the environment.

Now, there are a few types of antennas that these radar level meters can use:

1. Rod Antennas: These are good for measuring things that can corrode over time. They can handle pressures up to 1.6MPa and temperatures up to 20°C. They have a wide angle of emission, around 30 degrees, which means their signal isn’t that strong and they’re not as accurate. But they’re easy to clean and often used in good conditions, for larger measures, and small ranges, like tanks and corrosive substances.
2. Horn Antennas: These antennas have a large opening, which means they can receive and send signals well. They’re suitable for most measurements and can work under pressures up to 6.4MPa and high temperatures up to 350°C. They focus signals better and have a smaller angle of emission than rod antennas. So, if it’s a high-frequency radar level meter, the emission angle is even smaller, and the accuracy is higher. Many buffer tanks, storage tanks, and reaction tanks use this type of antenna. But they’re not good for corrosive substances.
3. Parabolic Antennas: These are newer antennas often used in high-frequency radar. They have a very small emission angle, only 3.5 degrees, which makes them great for precise measurements and working around obstacles.
4. Guided Wave Radar: This uses metal or cable to send and receive electromagnetic waves. It’s a contact measurement method, which means it touches what it’s measuring. It’s not much affected by dust, steam, or sticking to the waveguide rod, so it’s used a lot in solid level and small dielectric constant measurements.
5. Waveguide Antennas: These should be chosen when the dielectric constant is small (1.6~3) or when there are continuous whirlpools on the liquid surface or false reflections caused by devices inside the container. They focus the radar waves and are installed in the waveguide or bypass pipe. The size of the waveguide’s inner diameter affects the time it takes for the radar waves to travel, so it should be set in the parameters to compensate for the travel time. This type of antenna requires the substance being measured to flow well and not to stick to the material.

How to Choose the Right Radar Antenna

Choosing the right radar antenna for a radar level meter might seem a bit tricky, but it can be a breeze if you know what to look for. Let’s go through the factors you need to think about:

• Size of the Tank: Bigger tanks need antennas that can handle longer distances. For example, horn antennas are great for bigger tanks because they have a large opening, so they can send and receive signals well.
• Substance Being Measured: Different substances need different types of antennas. If you’re measuring something corrosive, a rod antenna might be your best bet because it can handle corrosive substances. But, if you’re measuring something solid, you might want to go for a guided wave radar, as it’s not much affected by dust or sticking to the waveguide rod.
• Process Conditions: If the conditions in which you’re working have high pressures or temperatures, or if there are gases that don’t react to chemicals, you might need a more durable antenna, like a horn antenna. These can work under pressures up to 6.4MPa and high temperatures up to 350°C.

Extended Reading: Case: High Temperature Radar Level Transmitter for Melted Salt-Solar Photovoltaic Power Station

More Level Measurement Solutions

So, there you have it! All you need to know about radar level meters and radar antennas. It’s important to choose the right antenna for your radar level meter, and we hope this guide has made that process a bit easier for you.

Remember, here at Sino-Inst, we’re not just experts, we’re also manufacturers and suppliers. We know our stuff, and we make quality products. And the best part? We offer customization to suit your specific needs. So why wait? Contact us today and get the perfect radar level meter for your needs.

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Powder level sensors are specialized devices designed to measure the level of powdered substances within a storage unit, such as a silo or hopper. They play an integral role in many industries – from food and beverage to pharmaceuticals, chemicals, and construction. These sensors ensure the smooth operation of industrial processes, minimize waste, and maximize efficiency.

Top Powder Level Sensors for Sale

Challenges of powder level measurement

Measuring the level of powdery substances can be quite challenging. Here are a few reasons why:

• Dust Creation: Powders can create a lot of dust. This dust can interfere with the sensor’s ability to accurately measure the level of the material.
• Uneven Surface: Powders don’t always settle evenly. This can create an uneven surface, making it difficult for some sensors to get a good reading.
• Material Characteristics: The characteristics of the powder, like its density or whether it tends to clump together, can also affect the accuracy of the measurement.
• Static Electricity: Powdery substances can generate static electricity, which can interfere with the operation of some types of sensors.
• Changes in Material Properties: Factors such as humidity, temperature, and pressure can change the properties of the powder, which can affect the accuracy of the level measurement.

Understanding these challenges can help in choosing the right sensor that can accurately measure powder levels despite these difficulties.

Different Types of Powder Level Sensors

Powder level sensors are essential tools for real-time and continuous detection of the height changes of solid materials in containers. They typically output standard signals that connect with display devices or computer systems. Here are some common types:

1. Mechanical sensors: These tools feel changes in solid stuff. They work well but can get dirty and need cleaning often.
2. Capacitive sensors: They use electricity to notice changes in stuff inside a container. They’re easy to use but can mess up if stuff sticks to them.
3. Rotary paddle sensors: These tools spin a small part inside the container. If stuff blocks the spin, they send a signal. They’re simple and cheap but don’t work well in hot places.
4. Radiation sensors: These tools use special rays to detect stuff. They work well in different spots, but they can make things dirty with radiation.
5. Ultrasonic sensors: These tools use sound waves to measure how far away stuff is. They’re easy to use and reliable but can mess up if the air is hot, has pressure, steam, or dust.
6. Radar sensors: These tools use special waves to measure how far away stuff is. They work well in different situations but can mess up when used with solid stuff.
7. Guided wave radar sensors: These tools work like radar sensors but have a guide for the waves. They’re very reliable but can mess up if stuff gets in the way or sticks to them.

Each tool has good and bad parts. It’s important to pick the right one for what you need.

More Level Measurement Solutions

Measuring levels of powders right is important for good work in factories. In this guide, we talked about why Powder Level Sensors are important, different types, and what to think about when picking the best one. It’s key to think about what you need for your job when choosing a sensor.

As a company that makes and sells things, Sino-Inst is here to help you pick the best sensor for your job. We have many types of sensors for different jobs. Plus, we can change them to fit your specific needs. Contact us today to learn more and make your work better with our high-quality Powder Level Sensors.

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