Diesel fuel tank level gauges for industrial oil storage tanks are very important, for level monitoring. Can be divided into mechanical and electronic.

Featured Diesel fuel tank level gauges for Sale

Read more about 7 Level Senors for Tank Level Measurement

Mechanical diesel fuel tank level gauge

Mechanical level gauges are currently used in petroleum, chemical, electric power, metallurgy, light industry, textile, national defense, and other industries. They are used to directly or indirectly measure the liquid level position of atmospheric oil and other media.

Float level gauges, magnetic flap level gauges, etc. are all based on this measuring principle.

1. Simple structure, intuitive reading and convenient installation.
2. The float is made of stainless steel with good anti-corrosion performance.
3. The float has a large cross-section and a certain cylinder height, so it is highly sensitive and has a wide application range for liquid specific gravity.
4. The guide wheel box is made of cast aluminum, and the friction coefficient of the inner guide wheel is small, which improves the measurement accuracy.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Electronic Fuel Tank Level Gauge

Generally speaking, the power supply is basically electronic. Float, capacitive, radar, ultrasonic, remote magnetic flap including liquid level transmitter and so on.

It is simple to distinguish them. No matter it is the internal power supply or an external power supply. Whether it is 24V or 220V. In short, the electronic type must be powered to work.

Different from the mechanical type, the working principle of the electronic level gauge is varied.

For example, the radar level gauge uses microwaves, the magnetostrictive level gauge uses current pulses, the static pressure type uses the pressure generated at the bottom of the measured medium, and the ultrasonic level gauge uses ultrasound to measure the liquid level.

High precision, easy to install, adapt to a variety of installation environments. These are the characteristics of electronic liquid level display instruments. Compared with the mechanical type, their technical level is higher. But at the same time, the price is much higher than that of the mechanical type.

Extended reading: Industrial Tank level indicators and Tank Level Gauges

Fuel tank level monitor

Ultrasonic externally attached oil level sensor uses the principle of ultrasonic echo ranging. The sensor is installed outside the bottom of the fuel tank and sends out an ultrasonic signal from the bottom, which is reflected by the oil surface, and then calculates the height of the liquid level according to time and speed.

At the same time, combined with digital signal processing technology, it overcomes the influence of the container wall and realizes high-precision non-contact measurement of the liquid level in the container, which can meet the requirements of industrial applications in terms of application.

Extended reading: Radar Oil Tank Level Sensor

https://www.drurylandetheatre.com/wp-content/uploads/2020/11/Externally-attached-ultrasonic-oil-level-sensor.mp4

Extended reading: What is a capacitive liquid level sensor?

External fuel tank level sensor

The oil level sensor is very important for monitoring the level of the oil tank/fuel tank. Ultrasonic Oil Level Sensor is mainly used for monitoring the level of truck oil tank. Oil level displays and transmit.

Ultrasonic oil level sensor uses the principle of ultrasonic detection to detect the fuel level of the fuel tank. The fuel volume data is transmitted to the background monitoring system to achieve real-time monitoring of vehicle fuel consumption. Ultrasonic oil level sensor is mainly used in the field of Internet of Vehicles to monitor the change of fuel level in the fuel tank in real-time to achieve fuel level detection. It can be used to prevent fuel stealing, optimize operating costs, optimize driver driving behavior, and assist statistical decision-making. At the same time, this product can also be used in chemical, water conservancy, storage tanks, and other fields that require level detection.

Read more: Ultrasonic Oil Level Sensor-External Paste-Truck Fuel Tank

Diesel fuel tank level monitoring system

There are actually two types of Diesel fuel tank level monitoring systems. One type is large industrial diesel storage tanks; the other type is small diesel tanks, such as truck fleets.

Oil tank liquid level monitoring/oil storage tank liquid level online monitoring system

Oil storage tanks are important equipment for oil extraction and refining companies to store oil. Accurate measurement of oil tank level and temperature is of great significance to the company’s inventory and safety management.

Oil tank level monitoring (on-line monitoring system for oil tank level and temperature) has changed the traditional methods of manual inspection and analysis. Realize the real-time dynamic monitoring of oil. Provide accurate data basis for production operation and management decision-making. Greatly avoid the occurrence of safety accidents.

If you need to measure high temperature and high pressure (-0.1MPa-32MPa) oil storage tanks, then learn about New Choice for Heating Oil Tank Level Sensor.

The oil tank level monitoring system uses a collection and communication integrated machine that integrates data collection and wireless transmission functions as the core equipment of the monitoring site. Automatically collect 4-20mA or RS485, RS232 output signals of level gauges and temperature transmitters and transmit them to the monitoring center in real-time via GPRS/CDMA/4G network.

The monitoring center receives monitoring data sent back from each site through monitoring software. And the liquid level and temperature information of each oil storage tank can be checked at any time on the software interface. And once the liquid level and temperature data of a certain oil tank exceed the upper or lower limit. The system will automatically alarm.

This system has played an important role in ensuring the safety of oil storage tanks and oil.

Extended Reading: Low Cost Float Level Sensor for Tank Liquid Volume Monitoring

Extended reading: ultrasonic level sensor price

Automobile fuel monitoring system

Using the fuel monitoring system, you can know:

• Where, when, how much gas was added, and how much did it cost to refuel?
• Where, when, how much oil was stolen, and how much oil was stolen?
• Where do you drive, how many kilometers, and how much gas did you use?
• Where is idling, how long is idling, and how much fuel is consumed?

The way to realize the oil quantity monitoring system:

1. Real-time oil level consumption and abnormal oil level change alarm
2. Refueling or abnormal consumption query
3. Oil level curve analysis report

Extended Reading: Guide and Selection for Diesel Fuel Flow Meters

You may like:

Sino-Inst offers over 10 Diesel fuel tank level gauges & Indicators for level measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Diesel fuel tank level gauges & Indicators options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Diesel fuel tank level gauges & Indicators instrumentation, located in China.

Liquid level float switch is a commonly used liquid level controller. For water Tank & Pump alarm and level control. Can be divided into Continuous Float Level Sensor and Point Level Float Switch.

Featured Liquid level float switches for sale

Know more about Liquid Level Switch

Liquid level switch, also known as water level switch, liquid level sensor. As the name implies, it is a switch used to control the liquid level.

In terms of form, it is mainly divided into contact type and non-contact type.

Commonly used non-contact switches include capacitive liquid level switches, and contact float-type liquid level switches are the most widely used. Electrode liquid level switches, electronic liquid level switches, and capacitive liquid level switches can also be realized by contacting methods.

Continuous Float Level Sensor

The floating ball continuous level gauge uses the floating ball to move up and down with the liquid to trigger or release the reed switch in the tube, and output 4-20mA or other different standard models through circuit processing.

With multi-interface measurement, easy to install, and corrosion-resistant, it can meet most measurement needs. Suitable for various tanks and tank level measurement, optional on-site display.

Point Level Float Switch

The float level switch uses a magnetic float to rise or fall with the liquid level. The sensor detects the reed switch chip at the set position in the tube, and sends out a contact opening (closing) conversion signal.

One or more dry reed pipes are installed in the closed non-magnetic pipe. Then the pipe passes through one or more hollow floats with ring magnets inside. The rise or fall of the liquid will drive the floating ball to move up and down together. Then the reed tube in the non-magnetic tube will pull on or off, and then output a switch signal.

According to needs, one or more liquid level switch points can be set.

Whether it is Continuous Float Level Sensor or Point Level Float Switch, they all need to be in contact with the medium.

However, in some cases, we need to measure and control the liquid level without contacting the medium. Then we can consider the following liquid level sensors.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Read more about: 7 Level Senors for Tank Level Measurement

FAQ

Sino-Inst offers over 10 Liquid level float switches – Single and Multipoints for level measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Liquid level float switches – Single and Multipoints options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Liquid level float switches – Single and Multipoint instrumentation, located in China.

Tank level indicators are level gauges that can measure and display the level of industrial liquid storage tanks. Liquid level refers to the level of liquid in a sealed container (for example oil/fuel tank) or an open container (water tank).

Featured Tank Level Indicators and Gauges

Read more about: 7 Level Senors for Tank Level Measurement

Tank level indicators for common tanks

Water tank level indicator

Water tank level monitoring is the most common application of Tank level indicators.

Common water, purified water, application water, etc. Less impurities. If the tank is not sealed. It can be applied to the hydrostatic input level gauge. The lowest cost. The easiest to use.

Of course, if the tank is sealed. Or there are impurities in the water. A diaphragm seal differential pressure level transmitter can be used.

According to your actual measurement installation situation, you can also choose other applicable Tank level indicators and Tank Level Gauges.

Read more about: Water Tank Level Sensors for Level monitoring and Auto-control

Propane tank level indicator

Propane is a gas that can be liquefied. Chemical formula CHCHCH, colorless, liquefiable gas. Slightly soluble in water, soluble in ethanol and ether.

Common Industrial Propane Tank Level Indicators for Industrial Tank Level Measurement include: radar level sensor; magnetostrictive level sensor; float level gauge; magnetic flap level gauge; ultrasonic level gauge.

What kind of level gauge is used for Industrial propane level measurement?

Please refer to:

5 Industrial Propane Tank Level Indicators

See more

Fuel & oil tank level indicator

Measure the level of oil storage tanks. We recommend the use of a magnetostrictive level gauge or an externally attached ultrasonic level sensor.

Advantages of magnetostrictive level gauge for measuring oil tank level:

• The magnetostrictive liquid level gauge can simultaneously measure multiple parameters such as liquid level, interface level, and temperature.
• The measurement range is large, and the maximum measurement range can be 20m.
• Measurement grade products, high measurement accuracy, can reach up to ±1mm.
• Using pure electronic technology to measure, so there is no wear, safe and reliable, and long service life
• The measurement accuracy is not affected by factors such as the shape of the container and the steam in the container.
• No need for regular calibration, easy installation and maintenance without tank cleaning.
• Multiple signal output, easy to realize the monitoring function of the system.
• The product design meets the requirements of explosion-proof standards, and achieves explosion-proof and intrinsically safe certification.

Extended reading: Capacitance level sensor advantages and disadvantages

Advantages of Ultrasonic Tank Level Sensor-External Mounted

• Non-contact measurement function ——– Ultrasonic sensor probe is external. No need to open a hole in the container to be tested.
• Auto-calibration function——–With self-calibration function. It overcomes the problem of reduced accuracy after long-term use of traditional liquid level gauges.
• Infrared online debugging function——–Applicable to occasions where it is not suitable to open the cover for testing in dangerous situations. At the same time, it reduces the difficulty of debugging.
• Self-diagnosis function——–It has its own working status diagnosis function. It also has hardware diagnosis function. It enhances the reliability and stability of the level gauge.
• One-key recovery function——–When the external measuring level gauge works abnormally, it can be restored to the normal state with one key through the debugger.
• Local display and remote transmission function——–The level gauge can not only display the level value on the spot in time. But also remotely transmit it to the control room through the signal line.

Extended reading: GWR Corrosive Liquid Chemical Level Sensor

large water tank level indicator

In industrial production, water tanks are widely used. In many production equipment, the measurement and control of the water tank level is directly related to the normal operation of the process production process. At present, there are many methods for measuring and controlling the liquid level of the water tank, each with its own strengths.

1. If the site is an open tank, it needs to have a remote transmission function. If there is no requirement for a scale, it is recommended to use a submersible level gauge. The cost is low. The principle of cable-type diffusion silicon. Simple and easy to use. , 24V power supply.
2. If the site needs to have a scale and a remote transmission function. That is to use a magnetic float level gauge with a remote transmission function. That is, the liquid level can be displayed on site. And the liquid level can be transmitted to the control room or PLC for display.
3. Pressure type liquid level transmitter. This is also the simplest principle of using pressure to display the liquid level height. It is installed at the bottom of the side-loading tank. 24V power supply.
4. Ultrasonic level gauge. When the ultrasonic level gauge is used, there should be no foam on site. Otherwise, the display will be inaccurate. The clean water pool can be used.

These are all very simple level gauges. But in fact, they still need to be selected according to the working conditions. Before purchasing, it is best to ask the manufacturer.

Read more about: Types of water level controller

You may like:

Extended reading: Types of Fuel-Diesel Level Sensors

If you need to measure the tank level. But you still don’t know how to choose suitable Tank level indicators and Tank Level Gauges, please contact Sino-Inst sales engineer.

Sino-Inst offers over 30 Tank level indicators and Tank Level Gauges for level measurement. About 50% of these are Radar level meters, 40% is the magnetic level sensor.

A wide variety of Tank level indicators and Tank Level Gauges for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Tank Level measurement instrumentation, located in China.

Propane tank level indicator is also called propane tank gauge level indicator, or propane tank level gauge. What kind of level gauge is used for Industrial propane level measurement?

Featured Propane Tank Level Indicators

Read more about 7 Level Senors for Tank Level Measurement

Maybe you also need to measure the propane tank flow. Then you can refer to: Industrial LPG/Propane flow meter.

Read more about: Ultrasonic Tank Level Sensors for Tank Level Monitoring

Sino-Inst offers over 10 Propane Tank Level Indicators for level measurement. About 50% of these are Radar level meters, 40% is the magnetic level sensor.

A wide variety of Propane Tank Level Indicators for level measurement options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Propane Tank Level measurement instrumentation, located in China.

Radar Level Measurement System for High-Temperature Blast Furnace. This article is a case introduction for a customized radar level system.

What is a blast furnace?

The blast furnace uses a steel plate as the furnace shell, and the shell is lined with refractory bricks. The blast furnace body is divided into five parts from top to bottom: throat, body, waist, belly and hearth. Due to the advantages of good technical and economic indicators of blast furnace ironmaking, simple process, large production volume, high labor production efficiency and low energy consumption, the iron produced by this method accounts for the vast majority of the world’s total iron output.

During blast furnace production, iron ore, coke, and slag-forming flux (limestone) are charged from the top of the furnace, and preheated air is blown from the tuyere located at the lower part of the furnace along the furnace circumference.

At high temperature, the carbon in the coke (some blast furnaces also inject auxiliary fuels such as pulverized coal, heavy oil, natural gas, etc.) and the oxygen in the air are combusted to generate carbon monoxide and hydrogen. Oxygen, thereby reducing to obtain iron.

The smelted molten iron is released from the iron mouth. Unreduced impurities in iron ore and fluxes such as limestone combine to form slag, which is discharged from the slag port.

The generated gas is discharged from the top of the furnace, and after dust removal, it is used as fuel for hot blast stoves, heating furnaces, coke ovens, boilers, etc.

The main product of blast furnace smelting is pig iron, as well as by-product blast furnace slag and blast furnace gas.

Read more about: Common Types Of Heating Oil Tank Level Sensors

Difficulties in Level Measurement of Blast Furnace Silo

The level detection and control of blast furnace silo is very important to ensure the continuous production of blast furnace. However, due to the particularity of its working conditions, the material level measurement has the following difficulties:

1. The temperature is too high.
   The temperature of the blast furnace silo is high. Its working temperature range is generally between 200 and 300 ℃.
2. The dust is large.
   The dried raw materials in the blast furnace silo. Such as carbon, lime, ores, etc., will emit a large amount of dust suspended in the air during the feeding and production process.
3. Strong impact and wear.
   The height of the blast furnace silo is much higher than that of ordinary containers. The solid material such as block material inside it will have a large downward gravitational impact on the measuring instrument during the feeding process. And each time it causes different degrees of wear and tear to the measuring instrument.
4. The dielectric constant varies greatly.
   Since the material ratio will change and the mixing is not uniform, it may also be affected by a small amount of steam. Therefore, the dielectric constant of the medium changes greatly. At the same time, more dust in the blast furnace will also interfere with the dielectric constant.

Extended Reading: Dielectric constant for radar level transmitter

What kind of level meter can be used for blast furnace level measurement, can radar level meter be used?

To solve the problem of blast furnace level measurement, it is possible to use a radar level gauge to measure it. The radar level gauge is a continuous level measuring instrument with a measurement accuracy of up to ±1mm. The temperature can meet the measurement conditions of 1200 degrees, and fully meet the blast furnace material level measurement conditions.

In the blast furnace level measurement process, the most important thing is the selection of the level meter. Only when the on-site measurement conditions are met, can the work efficiency be effectively improved. The selection of radar level gauge can be based on three parameters of measuring medium, temperature and pressure. The second is its installation method and output signal. In this way, the difficult problem of blast furnace level measurement can be easily solved.

Extended Reading: Featured Silo Level Sensors

Introduction of Radar Level Measurement System for High-Temperature Blast Furnace

In the picture:

1. Dryer: The function of the dryer is to dry compressed air. The compressed air used for the radar purging device must be dewatered and dry compressed air. In order to ensure the service life and function of the radar device.

Air-conditioning gun: It can cool down the compressed air. After the compressed air processed by the cold air gun reaches the radar purge device, it has a cooling effect. Can protect radar.

If the dryer and the air-conditioning gun are configured at the same time, there is basically no maintenance problem after installation. It can be used normally for a long time.

The dryer and air-conditioning gun can also be configured with only one choice. Radar can also work very well. However, maintenance may occasionally be required.

The configuration of the dryer and air-conditioning gun is up to you according to your budget.

2. Solenoid valve + time relay control, their function is to control the purge frequency and time. Save energy costs.

We will make a small explosion-proof control cabinet.

After installation, you only need to set the purge frequency and time. The purge frequency and time need to be set according to the dust situation in your furnace.

3. Purge device. Use compressed air to purge the dust in the furnace while cooling down.

4.120GHz FM continuous radar level meter

5. Compressed air pipeline. The distance between the dryer and the radar must not be longer than 30 meters. That is, 5. The total length of the compressed air pipeline cannot exceed 30 meters.

6. Compressed air outlet

7.4-20mA or 485 output line. Choose according to your needs.

8. Air compressor. For supplying compressed air. Configure according to customer requirements. Customers can also purchase locally. Or, configure it in our factory.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Introduction of 120GHz FM continuous Radar Level Meter

The following table is a customized parameter list:

Code	Description
0 Not explosion-proof	Explosion-proof requirements
1 Explosion-proof
1 liquid	Measuring medium
2 solid particles
3 solid powder
A 24VDC	power supply
B 220VAC
1 Guided wave hard rod type	Antenna type
2 Guided wave flexible cable type
3 Stainless steel bell mouth
4 rod antenna
5 Flat
6 Drop type
7 lens type
8 UHF 120GHz
9 Special custom
C Normal temperature type (-40～80)℃	Process temperature
H High temperature type (-40～200)℃ plus heat sink
G Ultra-high temperature type (-40～350)℃ high temperature material + heat sink
S Special high temperature (-40～1200)℃
F1 1.0MPa	Pressure Level
F2 1.6MPa
F3 2.5MPa
F4 4.0MPa
S special
L1 threaded connection (order note)	Process connection
D50 DN50 flange
D80 DN80 flange
D100 DN100 flange
S other
1 PP	Flange material
2 Tetrafluoro
3 stainless steel
4 special
A 4-20mA	output signal
B 4-20mA+HART
C RS485
C with purge	Whether with purge
N without purge
L 0～70000mm optional	Range

Therefore, according to your measurement requirements, our selection is

Ultra high frequency 120G radar level gauge, model: 03A8SF21003AC

[Blast furnace installation, temperature: 400 degrees, pressure: 1.6MPA, dust inside, range: 30 meters, power supply: 24VDC, output signal: 4-20MA, two-wire system, installation size: DN100PN16 flange, with purge interface]

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

Necessity and feasibility of using radar level meter for blast furnace molten iron

The replacement of each product has its necessity and feasibility. It is also necessary and feasible to use radar level gauges to replace manual visual inspection in ironworks.

Before the radar level meter entered the ironmaking plant, many factories used manual visual inspection to measure the liquid level in the blast furnace. This method has many advantages and many limitations.

First of all, the molten iron temperature in the blast furnace is very high, sometimes as high as 1490 ℃, and even exceeds this temperature. Manual visual inspection requires close observation, which is very dangerous for employees who are visually inspecting.

Other seasons are fine. In winter, the visibility is low, the fog is heavy, the degree of danger is self-evident, and the accuracy of the measurement is also very poor.

Secondly, factors such as man-made or weather can easily cause the molten iron cans to be canned or overflowed, resulting in production accidents.

From the above two limitations of manual visual inspection, it is very necessary for ironworks to use meters. At least the safety of employees is guaranteed, and production accidents caused by molten iron overflow can be avoided.

Purge Device

The purging device uses the dynamic pressure compensation method of hydrodynamics to truly reflect the pressure value of each measuring point online. The purging pressure is greater than the measured pressure, which completely solves the blockage and burning of the pressure measurement pipeline under the condition of dusty and high temperature. The use of pressure regulators can stabilize the gas source provided by the power plant to ensure that the flow rate output by the flow controller is stable and runs reliably for a long time.

In the following conditions, a purging device needs to be added to the blast furnace liquid level measurement system:

First, when the measured powder concentration is relatively large, it is necessary to purge;
Second, the concentration of vapor in the measurement medium is relatively large, and condensation is easy to form on the surface of the sensor, which must be purged.
Third, when the temperature is too high, purging and cooling can also be increased.

Quotation for Radar Level Measurement System for High-Temperature Blast Furnace

Configuration	Description	Price/PC
120G radar level gauge	Model: 03A8SF21003AC	USD ?898.50
Dryer	Adsorption dryer	USD ?25.00
Air Conditioner		USD ?50.00
Solenoid valve control	Solenoid valve + time relay control	USD ?60.00
Air compressor	For supplying compressed air	USD ?05.00

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

Featured Radar Level Transmitters

Related Blogs

Sino-Inst offers over 10 Radar level transmitters for level measurement. About 50% of these are Radar level meters, 40% is the tank level sensor.

A wide variety of radar level meters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of radar level measurement instrumentation, located in China.

Request a Quote

Ultrasonic Water Level Sensor is also often called “Ultrasonic Level Sensor”, “Ultrasonic Level Detector”, “Ultrasonic Level Sensor 4-20ma” or “Ultrasonic Level Transmitter” “Ultrasonic liquid level sensor”

Featured Ultrasonic Water Level Sensors

Model	High-precision with small blind area	Universal ultrasonic level meter	Explosion-proof	Split type
Range	1m, 2m	5-60 m	0-15 m (large range can be customized);	5 -70 meters
Blind area	<0.06-0.15m	<0.4-1.5m	0.35 m~0.5 m	0.25m～0.6m
Accuracy	<±1mm	±0.25%F.S	±0.5%F.S	0.5%-1.0%
Output	4-20mA, RS485Switch output: three NPN	4-20mA, 4-20mA+HART, RS485 Switch output: NPN/relay	Analog output: 4~20 mA (optional 1-2 relay output); digital output: RS485(modbus) protocol;	Analog output: 2 4~20mA/5100 loads Relay output: 2 groups of AC250V/8A or DC30V/5A state programmable (optional)
Power supply	24VDC	24VDC, 220VAC	DC12V, DC24V/AC220V	220VAC+15%50Hz or 24VDC120mA
Installation	M30×1.5 or G11/2	M60×2	M60×2	according to range and probe selection

Read more about: 7 Level Senors for Tank Level Measurement

Related products

The specific ultrasonic water level sensor price needs to be selected and quoted according to your measurement parameters. Please contact Sino-Inst sales engineer!

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Extended reading: Water Tank Level Controller

Sino-Inst is a manufacturer of Ultrasonic Water Level Sensors.

Sino-Inst offers over 20 Ultrasonic Water Level Sensors at best price. About 50% of these are Pressure level Transducer, 40% are Differential Pressure transmitters, and 40% are Ultrasonic Water Level transmitters.
A wide variety of Ultrasonic Water Level Sensors options are available to you, such as free samples, paid samples. 

Sino-Inst is a globally recognized supplier and manufacturer of Ultrasonic Water Level Sensors, located in China. Sino-Inst sells through a mature distribution network that reaches all 50 states and 30 countries worldwide. Ultrasonic Water Level Sensors products are most popular in Domestic Market, Southeast Asia, and Mid East. 

You can ensure product safety by selecting from certified suppliers, with ISO9001, ISO14001 certification.

Float level switch, Float level sensor and Float level controller are commonly used liquid level monitoring instruments.

Users are consulting on float level timing, and often confuse it with float level switches and float level gauge controllers. But because they are not the same product, their functions and prices are quite different. So, what are the differences between the float level gauge, the float level switch and the float level controller?

Generally speaking, the main differences between float level gauge, float level switch and float level controller are as follows:

1.Float level sensor, Float level switch and Float level controller Structure difference

The reed switch is directly placed inside the float level controller, without the need to design a circuit board separately.

The structure of the float level switch is the simplest.

Float level sensor can also be used with paperless recorder.

Extended reading: Float Level Sensors – Single and Multipoint

2.Float level sensor, Float level switch and Float level controller Price difference

Because the structure of the float level gauge is more complicated, its price is relatively high. The price of float level controller is second, and the price of float level switch is the cheapest.

Extended Reading: GWR Level Sensor for High Temperature & High Pressure

3.Float level sensor, Float level switch and Float level controller Functional difference

Float Level Gauge A level gauge that can measure liquid level values. The float level controller cannot display the specific level value. Only one switch value alarm point signal is given.

The float level switch is especially suitable for use in small tanks, but you need to open the hole at the height you need. Then install one end of the float at the position where the alarm is needed. When the liquid level reaches the position, the floating ball will be lifted up and the contact point will be automatically disconnected to act as an alarm.

Extended reading: Magnetostrictive Hydraulic Cylinder Position Sensor

Featured Float level sensor, Float level switch and Float level controller

Extended reading: Radar Level Sensor Advantages and Disadvantages

The customer consults the float level gauge, and the salesperson asks for detailed parameters. The customer just said that it needs 8 on-off alarm points with a measuring length of 5 meters, and nothing else. Our sales staff made a quotation based on this parameter.

After the quotation. Suddenly, the customer asked for a 4-20mA remote signal with a secondary display meter. In this way, the price of the second quotation more than doubled. Customers began to question the price.

Customers think this is the same product. Why does one more parameter make people feel that they are completely two products? This requires customers to clearly understand the specific differences between the float level gauge, the float level controller, and the float level switch.

The float level gauge is used as a level gauge that can measure the liquid level value. Float level gauges are generally straight rod type. A maglev ball is set on the straight rod. Move the maglev ball up and down to attract the reed switch in the straight rod. The purpose of increasing the resistance value in series is achieved by attracting the reed switch.

Because the output 4-20mA remote signal is a current signal. In the case of a certain voltage, current and resistance are proportional. The greater the resistance, the greater the current. Therefore, the float level gauge has a series circuit board circuit inside the straight rod, so the price is relatively high.

And if there is no need to display the specific level value, then there is no need to output a 4-20mA signal to the secondary instrument in the straight rod of the float level gauge. It only needs to be able to give a switch alarm point signal. Then the reed switch can be placed directly inside the float level gauge, without the need to design the circuit board separately. This way the price will be different. Of course, the name becomes the float level controller. So the price is different.

Many customers will also say that it is the float level gauge that they are looking for when they buy it. In fact, to be more precise, this cannot be called a float level gauge. Because it no longer has the function of measuring liquid level value.

The float level switch is simpler than this, and the structure is simpler. Especially suitable for use in small tanks. The float level switch needs to make a hole at the required height by itself, and then install the float at the position where the alarm is needed. When the liquid level reaches the position, the floating ball will be lifted up and the contact point will be automatically disconnected to act as an alarm.

Extended reading: Ultrasonic level transmitter for Hazardous Liquids

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Sino-Inst offers over 10 Float level switches and transmitters for level measurement. About 50% of these are float liquid level meters, 40% is the level switches.

A wide variety of Float level switches and sensors options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Float level switches and sensors instrumentation, located in China.

The Non Contact Liquid Level Sensor is not in contact with the measured medium. The Non Contact Liquid Level Sensors provided by Sino-Inst is not Gravity Non-contact Liquid Level Sensors. It is the liquid level sensor used in industrial tanks, reservoirs, and open channels. There are mainly ultrasonic level sensors and radar level sensors.

Featured Non Contact Liquid Level Sensors

Read more about 7 Level Senors for Tank Level Measurement

All of the above are Non Contact Liquid Level measurement techniques. If you need to contact the medium to measure, you can consider using Liquid level float switches & sensors.

Extended reading: GWR Solid Level Sensor-Cement silo-Ash powder measure

Related Liquid Level Measurement Solutions

Sino-Inst offers over 20 Non Contact Liquid Level Sensors and transmitters for level measurement. About 50% of these are ultrasonic liquid level meters, 40% is the level switches.

A wide variety of Non Contact Liquid Level Sensors and transmitters options are available to you, such as free samples, paid samples.

Sino-Inst is a globally recognized supplier and manufacturer of Non Contact Liquid Level Sensors and transmitters instrumentation, located in China.