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Level Sensors

Level sensors are devices used to determine the level of a liquid or solid material within a container or vessel. They are essential in many industrial and commercial processes where precise measurements of material levels are critical for safe and efficient operations. Level sensors come in various types, each with unique benefits, choosing criteria, and applications.

Types of Level Sensors

There are various types of level sensors, including:

  • Capacitive Level Sensors: Capacitive level sensors detect changes in capacitance caused by the presence or absence of a material within a container. They are suitable for measuring liquids and granular solids and are widely used in food and beverage industries.
  • Ultrasonic Level Sensors: Ultrasonic level sensors use sound waves to determine the level of a material within a container. They are commonly used in wastewater treatment plants, chemical processing plants, and other industrial applications.
  • Float Level Sensors: Float level sensors use a float attached to a lever arm that moves up and down with the changing level of the material in the container. These sensors are commonly used in water tanks and fuel tanks.
  • Radar Level Sensors: Radar level sensors use microwave signals to determine the material level in a container. They are commonly used in the petroleum and chemical industries.

Benefits of Level Sensors

Some of the benefits of level sensors include the following:

  • Improved Safety – Level sensors help prevent overflows, spills, and leaks, posing significant safety hazards to workers and the environment.
  • Increased Efficiency – Level sensors enable more accurate monitoring and control of material levels, which can improve process efficiency and reduce waste.
  • Cost Savings – By optimizing material usage and reducing waste, level sensors can help companies save money on materials, labor, and equipment.

Choosing Criteria for Level Sensors

  • Material: Consider the type of material being measured, whether it is liquid or solid, and the specific properties of the material, such as viscosity and conductivity.
  • Accuracy: Choose a level sensor that provides the required level of accuracy for the application.
  • Operating Environment: Consider the operating environment, including temperature, pressure, and corrosive or hazardous materials.

Applications of Level Sensors

  • Chemical Processing – Level sensors are widely used in the chemical processing industry to monitor and control the levels of chemicals and other materials in tanks and vessels.
  • Food and Beverage – Level sensors are used in the food and beverage industry to monitor and control the levels of liquids and granular materials, such as flour and sugar.
  • Water and Wastewater Treatment – Level sensors are used in water and wastewater treatment plants to monitor and control the levels of liquids and solids in various tanks and containers.
  • Petroleum and Gas – Level sensors are commonly used in the petroleum and gas industry to monitor the levels of crude oil, refined products, and other liquids.

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LU29-01, Flowline
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£ 1019.02
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DS14-01, Flowline
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£ 463.19
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84800013, Xylem
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£ 658.12
Telemecanique Sensors
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9038CG36LZ20, Telemecanique Sensors
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£ 284.28
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84800025, Xylem
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£ 751.61
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1SVR402902R0000 CM-HE, ABB
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£ 19.31
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£ 18.30
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LFP0400-A4NMB, SICK
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£ 399.27
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LFP2000-B4NMB, SICK
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£ 399.27
Endress+Hauser
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FTM50-AGG2K4A12AA, Endress+Hauser
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£ 675.13
Flowline
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LR81-0100, Flowline
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£ 670.23
Flowline
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LR83-0310, Flowline
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£ 743.92
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LR85-0300, Flowline
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PFT-FRBX25SF1OSSAMSSZ, Sick
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£ 350.36
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S01DB/F21/1, Delta-Mobrey
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LC92-1001, Flowline
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DL14-10, Flowline
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DL34-00, Flowline
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DX10-00-8FT, Flowline
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LC42-1001, Flowline
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WL10-NP-2, NIDEC COPAL ELECTRONICS GMBH
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WL10-PP-2, NIDEC COPAL ELECTRONICS GMBH
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266-0464, RS PRO
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266-0469, RS PRO
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FMU40-ARB1A2, Endress+Hauser
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FTC325-A2B31, Endress+Hauser
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010-3434, Gems Sensors

010-3434, Gems Sensors

Gems Sensors LS-240-3E Series
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2120D0AT1NAA0000, Emerson Process Management

2120D0AT1NAA0000, Emerson Process Management

Rosemount 2120 Vibrating Level Switch The 2120 is a popular choice for its simplicity, ease-of-use, and reliability, in high and low level alarm applications. When used as a low level alarm, the liquid in the tank or pipe drains down past the fork, causing a change of natural frequency that is detected by the electronics and switches the output state. When used as a high level alarm, the liquid rises in the tank or pipe, making contact with the fork which then causes the output state to switch. 8/16 mA (’Off’/’On’), Direct Load, PNP, Relay, or NAMUR switched output electronics (depending on version) Threaded process connection for side, top, or bottom mounting 2 off M20 conduit entries for supplied cable gland and blanking plug (cable not supplied) Easy selection of Dry ’On’ or Wet ’On’ Mode and Switching Delay Magnetic test point makes functional test easy Vibrating Liquid Level Switches
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ILLS-G0750-D-010, Cynergy3

ILLS-G0750-D-010, Cynergy3

ILLS Submersible Level Transmitter Submersible level sensors are a simple reliable way of measuring the level of liquids such as water, oils and fuel. Typical applications include Static tank level, rainwater harvesting, IBC tote or pallet tank, container and chamber level. Submersible level sensors provide stable, reliable and repeatable measurements in situations when other level sensing technologies are impractical or not accurate enough. These sensors use piezo-resistive technology and are contained within a stainless steel casing. Supplied with traceable serial number and calibration certificate. Accuracy 1mWG to 10mWG pressure range Stainless Steel Casing Reverse polarity protection
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2130LA2MS1NNBA00001NA, Delta-Mobrey

2130LA2MS1NNBA00001NA, Delta-Mobrey

Rosemount 2130 Vibrating Level Switch Rosemount’s 2130 vibrating level sensors work on the principle of a tuning fork to deliver accurate and reliable level measurement unaffected by turbulence, foam, vibration, solids content, coating products, and liquid properties. The switches forks are oscillated at their natural frequency using a piezo- electric crystal. When forks come into contact with a fluid the oscillating frequency change that occurs is detected by the 2130 level switch and causes a change in output state. The 2130 vibrating level sensor is simple to install and requires no calibration or maintenance. Internal diagnostics and LCD lights give a visual indication of the unit’s operational status and health and a magnetic test point allow for easy functionality checking. Features & Benefits Designed for operation in process temperatures from –40 to 180 °C Adjustable switching delay prevents false switching in turbulent or splashing applications ’Fast Drip’ fork design gives quicker response time when mounted horizontally, especially with viscous liquids Rapid wet-to-dry time for highly responsive switching Fork shape is optimized for hand polishing to meet hygienic requirements No moving parts or crevices for virtually no maintenance Built-in diagnostics continuously check electronic and mechanical health Fork conditions detected including internal and external damage, coated or blocked, and extreme corrosion Ideal for critical alarm duties Applications Overfill protection High and low level alarms Pump control or limit detection Run dry or pump protection Hygienic applications High temperature applications Vibrating Liquid Level Switches
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LU10-1305, Flowline

LU10-1305, Flowline

Flowline Switch-Tek LU10 Level Switch Premium range of CSA approved intrinsically safe ultrasonic level point switches from Flowline offer a reliable sensing solution within chemical, solvent, hydrocarbon & petroleum based liquids. Thanks to the universally mounting style of the Switch-Tek series they can be used in high level or low level alarm configurations Features and Benefits PFA Teflon or Polypropylene sensor suitable for use within hazardous environments Can be used as a redundant alarm within classified applications Highly suited for use with corrosive liquids Can be mounted both through the side or top wall of the tank NO/NC 60VA wiring polarity relay Note Suitable for use with Smart Trak & Switch Pak installation fittings Flowline Sensors
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232180, Gems Sensors

232180, Gems Sensors

Gems Sensors Level Switch- ELS-950M Series A compact brass bodied optical level sensor with excellent temperature and pressure capability. The ELS-950M features a water tight body, fused glass prism, and TPE insulated wiring and is ideal for harsh working conditions. Features and Benefits Compact size Suitable for harsh environments ± 1 mm repeatability IP66 rated 22 AWG wires Applications The ELS-950M optical level switches are suitable for use in a diverse range of installations including Coolant reservoir monitoring and warning Medical diagnostic, sterilizer, washers and dialysis equipment Low lubricant warning on machine tools, generator sets, on- or off-highway vehicles Low level warning in hydraulic reservoirs Plastic over flow bottles, plastic radiators Leak detection for drip pans
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DL34-01, Flowline

DL34-01, Flowline

Flowline EchoPod DL24/34 Ultrasonic Level Sensor Robust range of Ultrasonic level sensors provide the user with a non-contact continuous level solution. Thanks to the non-contact design, the Flowline EchoPod DL24/34 series is the ideal product for use within applications handling corrosive, sticky or dirty liquid. An embedded level controller within the DL14 series can reduce the price of installation, eliminating the cost of external hardware Features and Benefits Accurate measurement made possible thanks to automatic temperature compensation Continuous non-contact measurement up to 49.2" Optimised for small tank applications with a narrow 2" beam width and 2" short dead band PVDF transducer and 6P Polycarbonate enclosure construction makes the EchoPod DL24/34 series suitable for corrosive applications Quick & simple configuration via Flowline's Free WebCal Software & USB Adapter Note Compatible with Various Flowline product ranges such as DataLoop, DataView, DataPoint & Commander
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VC5510NNOP, Carlo Gavazzi

VC5510NNOP, Carlo Gavazzi

Capacitive Level Sensor CE marked in compliance with relevant European Directives Sensing range 2 to 10mm adjustable via a single turn potentiometer LED indication when activated Output: DC 100mA transistor Power ON delay; Max 40ms (No delay version), Max 5s (ON/OFF delay versions) Supply voltage; 5-30Vdc No load current; ≤10mA Operating temperature range 0 to + 50°C Housing material; grey ABS and polycarbonate Ingress protection to IP65 1.5 m, 3 x 0.3mm2 PVC cable Approvals UL Approvals UL
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LMT100, ifm electronic

LMT100, ifm electronic

Electronic Level Sensor, LMT Series Flush mounting, discrete level sensors for liquids, powders and oils. G 1/2 process fitting with 316 and PEEK wetted parts. 24 Vdc operation. G 1/2 process connection Gold-plated contacts 2 switching outputs DC PNP Electrical design Separate mounting adapter required Note Stock number 7406442 - Cannot be used for Oils and Grease. See stock number 7406446 the suitable Oils sensor Caution For health and safety reasons DO NOT use sensor in the incorrect media.
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LLC710D3L24-003, SSt Sensing Limited

LLC710D3L24-003, SSt Sensing Limited

Reverse polarity, ESD and transient over-voltage protected Wide supply voltage range Push-pull output, capable of sinking or sourcing up to 100mA, can directly drive small loads Optional fail-safe PWM output Standard and extended temperature ranges available Polysulfone or Trogamid housing material options Internal or external mounting options High pressure option available Solid state so no moving parts to cause unreliability Small in size so they can be installed in applications where space is limited Can detect tiny amounts of liquid when positioned correctly, ideal for leak detection Fast response time Repeatable switching point Built-in output delays available on request for applications where sloshing causes intermittent switching Very robust permitting use in a wide range of fluids and chemicals
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LLG210D324-004-D, SSt Sensing Limited

LLG210D324-004-D, SSt Sensing Limited

Reverse polarity, ESD, transient over-voltage and short circuit protected Wide supply voltage ranges N and P type output configurations, capable of sinking or sourcing up to 200mA, can directly drive small loads Standard and extended temperature ranges available Thread options for external mounting Stainless steel housing with simex glass sensing tip Very high operating pressure Built-in output delays available on request for applications where sloshing causes intermittent switching Solid state so no moving parts to cause unreliability Fast response time Repeatable switching point Very robust construction permitting use in a wide range of demanding applications Compatible with most fluids and chemicals SST Sensing’s highest operating temperature liquid level switch Small in size so they can be installed in applications where space is limited Can detect tiny amounts of liquid when positioned correctly, ideal for leak detection
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POS287412, SSt Sensing Limited

POS287412, SSt Sensing Limited

Designed for applications requiring a robust metal housing and a wide operating temperature range Reverse polarity, ESD, transient over-voltage and short circuit protected Wide supply voltage ranges N and P type output configurations, capable of sinking or sourcing up to 200mA, can directly drive small loads Standard and extended temperature ranges available Stainless steel housing with simex glass sensing tip Choice of terminations Very high operating pressure LED output indication Solid state so no moving parts to cause unreliability Fast response time Repeatable switching point Very robust construction permitting use in a wide range of demanding applications Compatible with most fluids and chemicals SST Sensing’s highest operating temperature liquid level switch
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