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Fluid Sensors & Floats | Introduction

Standex Electronics fluid sensors provide more than just an on/off signal. Our fluid sensor solutions use a wide range of switching technologies - from magnetic reed switch technology to conductive and hall effect technology. A single PCB with many reed switches can provide multi-level measurements. But that's not all. We're experts in delivering smarter solutions to the most demanding fluid level sensing applications. These include basic fluid sensors driven by external electronics to turnkey sensor systems with discreet voltage outputs. Our fluid sensor designs include single, multi, or continuous level output. They can include custom packaging and header designs as well as integrated hermetic connectors. Send our experts a design request.

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Compact single level vertical mount LS01 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors.

Compact single level vertical mount LS02 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. IP68 only up to screw in thread.

Compact stainless steel single level vertical mount LS02 (S) Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 120°C. IP68 only up to screw in thread.

Compact single level horizontal mount LS03 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 150°C.

LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

CLS Series Capacitive Level Sensor

The CLS Series Capacitive Level Sensor (CLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The CLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing full scale accuracy. Our patent pending & revolutionary designs can be configured in a custom length aluminum or stainless-steel housing with an aluminum, stainless-steel, PP, or PA header, and Viton seals. Compatible with fuel, oil, water, ethanol blends, diesel, urea, etc. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

HLS Series Hall Effect Level Sensor

The HLS Series Hall Effect Level Sensor (HLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The HLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing high-resolution and accuracy. Available in a variety of rugged packages with temperature compensated solid-state sensing elements. Our patent pending & revolutionary designs can be configured in either plastic or stainless-steel housings with PP, PA, NBR, and stainless floats as well as multiple mounting options. Compatible with fuel, oil, water, ethanol blends, diesel & other liquids. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

FPS-B Series (HVAC/R) Liquid Level Sensor

FPS-B Series (HVAC/R) Liquid Level Sensor bracket model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary or auxiliary condensate drain pans. This model includes a custom bracket that clips onto primary or auxiliary drain pans. UL508, NEC and IMC compliant.

FPS-L Series (HVAC/R) Liquid Level Sensor

FPS-L Series (HVAC/R) Liquid Level Sensor elbow model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary or auxiliary condensate drain plugs. This model includes a custom elbow pipe fitting to accommodate easy installation to primary or auxiliary drain plugs. UL508, NEC and IMC compliant.

FPS-T Series (HVAC/R) Liquid Level Sensor

FPS-T Series (HVAC/R) Liquid Level Sensor tee model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary condensate drains vertical and horizontal, including a close coupled plugged or vertical drain option. Our most versatile plug-n-play model includes two “Do-It-All” custom tee pipe fittings for easy and flexible installation options. UL508, NEC and IMC compliant.

R12072 Series Liquid Level Sensor

Vertical top mount R12072 Series Liquid Level Sensor snap-in design is ideal in blow or injection molded bottles. Adjustable sensing point up to 18 inches from top of bottle. Standard termination-0.25 inch open spade.

R11774 Series Liquid Level Sensor

Snap lock mount R11774 Series Liquid Level Sensor design with integrated connector is ideal in blow or injection molded bottles. Compatible with B12450 Series Magnetic Float (sold separate).

R12180 Series Liquid Level Sensor

Snap lock mount R12180 Series Liquid Level Sensor design with integrated connector is ideal in blow or injection molded bottles. Compatible with B12450 Series Magnetic Float (sold separate).

R12468 Series Liquid Level Sensor

Vertical bottom mount R12468 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Integrated o-ring seal. Float sold separate. Mates with Packard P/N 12052641.

R12406 Series Liquid Level Sensor

Vertical bottom mount R12406 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

R12481 Series Liquid Level Sensor

Vertical bottom mount R12481 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Integrated o-ring seal. Compatible with B12482 Series Magnetic Float (sold separate). Mates with Packard P/N 12052641.

R12421 Series Liquid Level Sensor

Vertical bottom mount R12421 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

R12347 Series Liquid Level Sensor

Vertical bottom mount R12347 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Mates with Ford P/N E57B14A464AA.

R12372 Series Liquid Level Sensor

Vertical bottom mount R12372 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

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Advanced Fluid Level Sensor

Standex Electronics advanced fluid level sensors are custom design solutions utilizing Hall Effect or Capacitive sensing technologies for continuous liquid level monitoring. They offer long term solid state reliability over a wide temperature range as well as custom programable outputs with many packaging and mounting options.
CLS Series Capacitive Level Sensor

The CLS Series Capacitive Level Sensor (CLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The CLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing full scale accuracy. Our patent pending & revolutionary designs can be configured in a custom length aluminum or stainless-steel housing with an aluminum, stainless-steel, PP, or PA header, and Viton seals. Compatible with fuel, oil, water, ethanol blends, diesel, urea, etc. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

HLS Series Hall Effect Level Sensor

The HLS Series Hall Effect Level Sensor (HLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The HLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing high-resolution and accuracy. Available in a variety of rugged packages with temperature compensated solid-state sensing elements. Our patent pending & revolutionary designs can be configured in either plastic or stainless-steel housings with PP, PA, NBR, and stainless floats as well as multiple mounting options. Compatible with fuel, oil, water, ethanol blends, diesel & other liquids. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

All Liquid Level & Flow Sensors

Our liquid level sensors with integrated magnetic floats and cable terminals are used to detect low fluid levels or multiple fluid points. Choose from vertical or horizontal mount options and a range of switching options. They are simple, dependable, versatile, and low cost. Easily customizable and simple to install, magnetic level sensors are low power devices that don’t require electronics, making them very appealing for most applications. Reed liquid level sensors are fast becoming the level sensing technology of the future. What is driving this is its key reed sensor characteristics. They draw zero voltage and current – no power until they are energized. They can sit for years never drawing any power. This attribute alone allows them to be designed-in, in many applications where power is scarce. This includes many battery driven applications.

Compact single level vertical mount LS01 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors.

Compact single level vertical mount LS02 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. IP68 only up to screw in thread.

Compact stainless steel single level vertical mount LS02 (S) Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 120°C. IP68 only up to screw in thread.

Compact single level horizontal mount LS03 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 150°C.

LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

CLS Series Capacitive Level Sensor

The CLS Series Capacitive Level Sensor (CLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The CLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing full scale accuracy. Our patent pending & revolutionary designs can be configured in a custom length aluminum or stainless-steel housing with an aluminum, stainless-steel, PP, or PA header, and Viton seals. Compatible with fuel, oil, water, ethanol blends, diesel, urea, etc. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

HLS Series Hall Effect Level Sensor

The HLS Series Hall Effect Level Sensor (HLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The HLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing high-resolution and accuracy. Available in a variety of rugged packages with temperature compensated solid-state sensing elements. Our patent pending & revolutionary designs can be configured in either plastic or stainless-steel housings with PP, PA, NBR, and stainless floats as well as multiple mounting options. Compatible with fuel, oil, water, ethanol blends, diesel & other liquids. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

FPS-B Series (HVAC/R) Liquid Level Sensor

FPS-B Series (HVAC/R) Liquid Level Sensor bracket model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary or auxiliary condensate drain pans. This model includes a custom bracket that clips onto primary or auxiliary drain pans. UL508, NEC and IMC compliant.

FPS-L Series (HVAC/R) Liquid Level Sensor

FPS-L Series (HVAC/R) Liquid Level Sensor elbow model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary or auxiliary condensate drain plugs. This model includes a custom elbow pipe fitting to accommodate easy installation to primary or auxiliary drain plugs. UL508, NEC and IMC compliant.

FPS-T Series (HVAC/R) Liquid Level Sensor

FPS-T Series (HVAC/R) Liquid Level Sensor tee model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary condensate drains vertical and horizontal, including a close coupled plugged or vertical drain option. Our most versatile plug-n-play model includes two “Do-It-All” custom tee pipe fittings for easy and flexible installation options. UL508, NEC and IMC compliant.

R12072 Series Liquid Level Sensor

Vertical top mount R12072 Series Liquid Level Sensor snap-in design is ideal in blow or injection molded bottles. Adjustable sensing point up to 18 inches from top of bottle. Standard termination-0.25 inch open spade.

R11774 Series Liquid Level Sensor

Snap lock mount R11774 Series Liquid Level Sensor design with integrated connector is ideal in blow or injection molded bottles. Compatible with B12450 Series Magnetic Float (sold separate).

R12180 Series Liquid Level Sensor

Snap lock mount R12180 Series Liquid Level Sensor design with integrated connector is ideal in blow or injection molded bottles. Compatible with B12450 Series Magnetic Float (sold separate).

R12468 Series Liquid Level Sensor

Vertical bottom mount R12468 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Integrated o-ring seal. Float sold separate. Mates with Packard P/N 12052641.

R12406 Series Liquid Level Sensor

Vertical bottom mount R12406 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

R12481 Series Liquid Level Sensor

Vertical bottom mount R12481 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Integrated o-ring seal. Compatible with B12482 Series Magnetic Float (sold separate). Mates with Packard P/N 12052641.

R12421 Series Liquid Level Sensor

Vertical bottom mount R12421 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

R12347 Series Liquid Level Sensor

Vertical bottom mount R12347 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Mates with Ford P/N E57B14A464AA.

R12372 Series Liquid Level Sensor

Vertical bottom mount R12372 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

R12349 Series Liquid Level Sensor

Vertical bottom mount R12349 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Mates with Ford P/N E57B14A464AA.

R12431 Series Liquid Level Sensor

Horizontal mount R12431 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Connector meets requirements of Packard P/N 12162289.

R12456 Series Liquid Level Sensor

Horizontal mount R12456 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Mates with Yazaki P/N 7283-6434-40.

Horizontal Mount Liquid Level Sensor

Horizontal Mount Liquid Level Sensor products can be mounted on the side of the liquid reservoir or vessel using their hardware either internally or externally.

Compact single level horizontal mount LS03 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 150°C.

R12431 Series Liquid Level Sensor

Horizontal mount R12431 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Connector meets requirements of Packard P/N 12162289.

R12456 Series Liquid Level Sensor

Horizontal mount R12456 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Mates with Yazaki P/N 7283-6434-40.

HVAC/R Liquid Level Sensor

Standex Electronics Flood Prevention Switches (FPS) HVAC/R series are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Utilizing proven expert magnetic reed switch technology that feature Low voltage switching and reliable “no-stick” float design so switch operates smoothly every time. Quick and hassle free install and service features include: simple switch access, precision, no adjust switch install / removal, automatic switch reset, one spliced connection, flexible red or yellow wire connection, installation on primary and auxiliary drain pans and outlets, and high performance in low 1" drain pans.
FPS-B Series (HVAC/R) Liquid Level Sensor

FPS-B Series (HVAC/R) Liquid Level Sensor bracket model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary or auxiliary condensate drain pans. This model includes a custom bracket that clips onto primary or auxiliary drain pans. UL508, NEC and IMC compliant.

FPS-L Series (HVAC/R) Liquid Level Sensor

FPS-L Series (HVAC/R) Liquid Level Sensor elbow model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary or auxiliary condensate drain plugs. This model includes a custom elbow pipe fitting to accommodate easy installation to primary or auxiliary drain plugs. UL508, NEC and IMC compliant.

FPS-T Series (HVAC/R) Liquid Level Sensor

FPS-T Series (HVAC/R) Liquid Level Sensor tee model flood prevention switches are simple to install, easy to service and extremely reliable. As water level in the auxiliary or main drain pipe rises (due to a clogged air conditioning condensate drain) the switch shuts off the system, thus preventing water from overflowing, causing damage to floors, walls and ceilings. Ideal in commercial or residential installation to primary condensate drains vertical and horizontal, including a close coupled plugged or vertical drain option. Our most versatile plug-n-play model includes two “Do-It-All” custom tee pipe fittings for easy and flexible installation options. UL508, NEC and IMC compliant.

Magnetic Floats

Magnetic Float NBR or Nitrile Butadiene Rubber floats have excellent resistance to petroleum-derived liquids such as oil and gasoline and can be used in high temperature applications as well. Magnetic Float PA or Polyamide floats are made of nylon, have a very high strength-to-weight ratio making them shock and abrasion resistant, enduring a pressure of 5 bar (73 PSI or 0.5 MPa). Magnetic Float PP (polypropylene) are rugged, highly resistant to many chemical solvents, bases and acids and have a water absorption of only 0.1%. V2A Floats are made of rust-proof stainless steel and are resistant to high temperatures making them ideal for the Food & Beverage industry among others.

The B12450 Series Magnetic Float located in bottle assembly, operates with fluid specific gravity at 0.79 min. Compatible with Liquid Level Sensor series R11774, R12180.

B12469 Series Magnetic Float

The B12469 Series Magnetic Float located in bottle assembly, specific gravity per application. Compatible with Liquid Level Sensor series R12468.

B12482 Series Magnetic Float

The B12482 Series Magnetic Float located in bottle assembly, specific gravity per application. Compatible with Liquid Level Sensor series R12481.

Magnetic Float MS01-PA Series

The MS01-PA Series Magnetic Float ring actuator magnet (excentric) are made of nylon, have a very high strength-to-weight ratio making them shock and abrasion resistant as well as capable of enduring a 5 bar pressure (73 PSI or 0.5 MPa). Additionally, PA floats have a high resistance to many chemicals and are therefore an ideal solution in fuel tanks, oil containers or brake fluid reservoirs. Suitable for stems with an outer diameter up to 7.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02-S, LS05.

Magnetic Float MS02-PA Series

The MS02-PA Series Magnetic Float ring actuator magnet (excentric) are made of nylon, have a very high strength-to-weight ratio making them shock and abrasion resistant as well as capable of enduring a 5 bar pressure (73 PSI or 0.5 MPa). Additionally, PA floats have a high resistance to many chemicals and are therefore an ideal solution in fuel tanks, oil containers or brake fluid reservoirs. Suitable for stems with an outer diameter up to 8.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02-S, LS05.

Magnetic Float MS01-PP Series

The MS01-PP Series Magnetic Float ring actuator magnet (excentric) have excellent buoyancy with water absorption of only 0.1%. They are also highly resistant to chemical solvents, bases and acids making them an excellent choice for water-level sensors, automotive applications and producers of manufacturing and plant equipment. Suitable for stems with an outer diameter up to 7.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02, LS02-S, LS04, LS05.

Magnetic Float MS02-PP Series

The MS02-PP Series Magnetic Float ring actuator magnet (excentric) have excellent buoyancy with water absorption of only 0.1%. They are also highly resistant to chemical solvents, bases and acids making them an excellent choice for water-level sensors, automotive applications and producers of manufacturing and plant equipment. Suitable for stems with an outer diameter up to 8.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02, LS02-S, LS04, LS05.

Magnetic Float MS03-PP Series

The MS03-PP Series Magnetic Float ring actuator magnet (centric) have excellent buoyancy with water absorption of only 0.1%. They are also highly resistant to chemical solvents, bases and acids making them an excellent choice for water-level sensors, automotive applications and producers of manufacturing and plant equipment. Suitable for stems with an outer diameter up to 10.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02, LS02-S, LS04, LS05.

Magnetic Float MS04-PP Series

The MS04-PP Series Magnetic Float ring actuator magnet (centric) have excellent buoyancy with water absorption of only 0.1%. They are also highly resistant to chemical solvents, bases and acids making them an excellent choice for water-level sensors, automotive applications and producers of manufacturing and plant equipment. Suitable for stems with an outer diameter up to 9.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02, LS02-S, LS04, LS05.

Magnetic Float MS06-PP Series

The MS06-PP Series Magnetic Float (MS06/1-PP, MS06/2-PP, MS06/5-PP, MS06/6-PP) ring actuator magnet (centric) are made of nylon, have a very high strength-to-weight ratio making them shock and abrasion resistant as well as capable of enduring a 5 bar pressure (73 PSI or 0.5 MPa). This float has no mounting hole therefore movement of the float for actuation requires the use of a guide tube within the fluid reservoir. Float is FDA approved and especially suitable for food & beverage applications. Actuator magnet is fully contained within the float therefore protected from all liquids. Float is suitable for removable tanks that require periodic refills such as is coffee makers or other beverage equipment; float is foam. Compatible with all Reed Sensor series.

Magnetic Float MS07-PA Series

The MS07-PA Series Magnetic Float ring actuator magnet (excentric) are made of nylon, have a very high strength-to-weight ratio making them shock and abrasion resistant as well as capable of enduring a 5 bar pressure (73 PSI or 0.5 MPa). Additionally, PA floats have a high resistance to many chemicals and are therefore an ideal solution in fuel tanks, oil containers or brake fluid reservoirs. Suitable for stems with an outer diameter up to 15.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02-S, LS05.

Magnetic Float MS08-PP Series

The MS08-PP Series Magnetic Float ring actuator magnet (excentric) are made of nylon, have a very high strength-to-weight ratio making them shock and abrasion resistant as well as capable of enduring a 5 bar pressure (73 PSI or 0.5 MPa). Additionally, PA floats have a high resistance to many chemicals and are therefore an ideal solution in fuel tanks, oil containers or brake fluid reservoirs. Suitable for stems with an outer diameter up to 8.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02, LS02-S, LS04, LS05.

Magnetic Float MS01-NBR Series

The MS01-NBR Series Magnetic Float ring actuator magnet (excentric) have excellent resistance to petroleum-derived liquids such as oil and gasoline and can be used in high temperature applications as well. Suited for stems with an outer diameter up to 7.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02, LS02-S, LS04, LS05.

Magnetic Float MS02-NBR Series

The MS02-NBR Series Magnetic Float ring actuator magnet (excentric) have excellent resistance to petroleum-derived liquids such as oil and gasoline and can be used in high temperature applications as well. Suited for stems with an outer diameter up to 8.5mm; float is foam. Actuator magnet is contained within the float though partially exposed to the liquid material. Compatible with Liquid Level Sensor series LS01, LS02, LS02-S, LS04, LS05.

Magnetic Float MS09-S Series

The MS09-S Series Magnetic Float ring actuator magnet (excentric) are resistant to high temperatures up to 350°C (660°F) and ideal for food and beverage industry and high pressure applications. Suitable for stems with an outer diameter up to 9mm; hollow float. Actuator magnet is contained within the float therefore fully protected from the liquid material. Compatible with Liquid Level Sensor series LS02-S, LS05.

Magnetic Float MS10-S Series

The MS10-S Series Magnetic Float ring actuator magnet (excentric) are resistant to high temperatures up to 350°C (660°F) and ideal for food and beverage industry and high pressure applications. Suitable for stems with an outer diameter up to 9mm; hollow float. Actuator magnet is contained within the float therefore fully protected from the liquid material. Compatible with Liquid Level Sensor series LS02-S, LS05.

Multiple or Continuous Level

In multiple or continuous level sensor products, 100's of sensing points are possible. Information can be signaled with simple magnetic reed switches by mounting many reed switches to a PCB to give multiple liquid level point measurements. In this application resistors can be placed in circuit to provide discreet voltage outputs that will indicate one of many possible level points along the travel path of a magnetic float for continuous liquid monitoring.
LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

CLS Series Capacitive Level Sensor

The CLS Series Capacitive Level Sensor (CLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The CLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing full scale accuracy. Our patent pending & revolutionary designs can be configured in a custom length aluminum or stainless-steel housing with an aluminum, stainless-steel, PP, or PA header, and Viton seals. Compatible with fuel, oil, water, ethanol blends, diesel, urea, etc. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

HLS Series Hall Effect Level Sensor

The HLS Series Hall Effect Level Sensor (HLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The HLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing high-resolution and accuracy. Available in a variety of rugged packages with temperature compensated solid-state sensing elements. Our patent pending & revolutionary designs can be configured in either plastic or stainless-steel housings with PP, PA, NBR, and stainless floats as well as multiple mounting options. Compatible with fuel, oil, water, ethanol blends, diesel & other liquids. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

Single Level

A single level fluid sensor has a single magnetic float that moves with the changing level of a fluid and measures either a critical low level of fluid or other single fluid level.

Compact single level vertical mount LS01 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors.

Compact single level vertical mount LS02 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. IP68 only up to screw in thread.

Compact stainless steel single level vertical mount LS02 (S) Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 120°C. IP68 only up to screw in thread.

Compact single level horizontal mount LS03 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 150°C.

LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

SPDT Changeover (1 Form C)

SPDT changeover reed switch products are a single (Form C) reed switch which is essentially a single pole double throw SPDT reed switch.  It is hermetically sealed with 3 leads: a common lead, a normally open lead, and a normally closed reed switch lead. When operated the common contact will swing from the normally closed contact to the normally open contact. This is caused by the magnetic field produced by a coil or the magnetic field from a magnet.  When the magnetic field is removed the changeover reed switches common contact will revert back and come to rest on the normally closed contact. Check out our Magnet Interaction page to see animated examples of how reed switches are used in a sensing environment.

Compact single level vertical mount LS01 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors.

Compact single level vertical mount LS02 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. IP68 only up to screw in thread.

Compact stainless steel single level vertical mount LS02 (S) Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 120°C. IP68 only up to screw in thread.

Compact single level horizontal mount LS03 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 150°C.

LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

SPST-N.C. (1 Form B)

A Form B Fluid Sensor contains a single pole single throw, normally closed (SPST-N.C.) reed switch.  It's contacts are the normally closed (Form B) position before any magnetic field is applied.  Fluid sensors and floats can be configured to function as a normally closed or Form B reed switch.  A Form B fluid sensor containing a normally open reed switch that uses it's floating magnet to keep it in the closed position, as with our horizontal mount LS03 series Liquid Level Sensor. Check out these animated Magnet Interaction examples showing the reed switches in their sensing environment.

Compact single level vertical mount LS01 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors.

Compact single level vertical mount LS02 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. IP68 only up to screw in thread.

Compact stainless steel single level vertical mount LS02 (S) Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 120°C. IP68 only up to screw in thread.

Compact single level horizontal mount LS03 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 150°C.

LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

SPST-N.O. (1 Form A)

A SPST-N.O. (1 Form A) reed switch has it's contacts in the open state before any magnetic field is applied, drawing no power.

Compact single level vertical mount LS01 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors.

Compact single level vertical mount LS02 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. IP68 only up to screw in thread.

Compact stainless steel single level vertical mount LS02 (S) Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 120°C. IP68 only up to screw in thread.

Compact single level horizontal mount LS03 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 150°C.

LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

Vertical Mount Liquid Level Sensor

A vertical mount liquid level sensor has one or more floats and can be mounted vertically to the top or bottom of liquid tank or reservoir.

Compact single level vertical mount LS01 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors.

Compact single level vertical mount LS02 Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. IP68 only up to screw in thread.

Compact stainless steel single level vertical mount LS02 (S) Series Liquid Level Sensor used in level control, detection and monitoring. High power switch option, other cables and connectors. High temperature resistance up to 120°C. IP68 only up to screw in thread.

LS04 Series Liquid Level Sensor

Versatile LS04 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring. Reservoir, tank, bottle or other container mounting configurations. Up to 6 floats, 1W-100W rated power, other cables, connectors.

Versatile stainless steel LS05 Series Liquid Level Sensor for single, multi and continuous level control, detection and monitoring capable of high temperature resistance up to 200°C (SS) and pressure up to 12 bar. Multiple floats with minimum 1.5” spacing, 1W-100W rated power, other cables, connectors. UL Approved.

CLS Series Capacitive Level Sensor

The CLS Series Capacitive Level Sensor (CLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The CLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing full scale accuracy. Our patent pending & revolutionary designs can be configured in a custom length aluminum or stainless-steel housing with an aluminum, stainless-steel, PP, or PA header, and Viton seals. Compatible with fuel, oil, water, ethanol blends, diesel, urea, etc. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

HLS Series Hall Effect Level Sensor

The HLS Series Hall Effect Level Sensor (HLS) are custom designed solutions for continuous fluid level monitoring over a wide temperature range, with calibrated and custom programmable outputs for various tank geometries.  The HLS Series is a smart sensor with onboard microcontroller designed for long-term solid-state reliability in harsh environments, providing high-resolution and accuracy. Available in a variety of rugged packages with temperature compensated solid-state sensing elements. Our patent pending & revolutionary designs can be configured in either plastic or stainless-steel housings with PP, PA, NBR, and stainless floats as well as multiple mounting options. Compatible with fuel, oil, water, ethanol blends, diesel & other liquids. Can meet IP67 requirements.

Thought Leadership: Hall Effect & Capacitive Level Sensors

R12072 Series Liquid Level Sensor

Vertical top mount R12072 Series Liquid Level Sensor snap-in design is ideal in blow or injection molded bottles. Adjustable sensing point up to 18 inches from top of bottle. Standard termination-0.25 inch open spade.

R11774 Series Liquid Level Sensor

Snap lock mount R11774 Series Liquid Level Sensor design with integrated connector is ideal in blow or injection molded bottles. Compatible with B12450 Series Magnetic Float (sold separate).

R12468 Series Liquid Level Sensor

Vertical bottom mount R12468 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Integrated o-ring seal. Float sold separate. Mates with Packard P/N 12052641.

R12406 Series Liquid Level Sensor

Vertical bottom mount R12406 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

R12481 Series Liquid Level Sensor

Vertical bottom mount R12481 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Integrated o-ring seal. Compatible with B12482 Series Magnetic Float (sold separate). Mates with Packard P/N 12052641.

R12421 Series Liquid Level Sensor

Vertical bottom mount R12421 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

R12347 Series Liquid Level Sensor

Vertical bottom mount R12347 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Mates with Ford P/N E57B14A464AA.

R12372 Series Liquid Level Sensor

Vertical bottom mount R12372 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Indication delay feature.

R12349 Series Liquid Level Sensor

Vertical bottom mount R12349 Series Liquid Level Sensor design is ideal in blow or injection molded bottles. Uses separate seal grommet and contains and internal snubber resistor. Mates with Ford P/N E57B14A464AA.

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