Flow & Float Switches

Flow & Float Switches

Wide range of flow detection switches and float switches from leading UK manufacturer Cynergy3, well known for excellent quality and reliability. Utilising Cynergy3's own reed switch technology, the flow switch range includes inline and paddle options as well as non-invasive ultrasonic flow meters, available in vertical and horizontal configurations, as well as a cable-end option. They are available in a variety of materials in order to accommodate compatibility with majority of liquid media. Heavy duty and ATEX certified float switches are available, too.

Can't find what you're looking for? Majority of the models offered can be customised to your requirements - talk to our technical sales team: Contact us

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Cynergy3 FS15 Flow Switch Series

The FS15 series of normally open flow switches by Cynergy3 utilises a fixed reed switch and a moving magnet to enable accurate flow detection, while ensuring minimal fluid flow restriction. These inline switches are designed for operation in liquid flow systems with pressure of up to 10 bar (not suitable for systems containing significant amount of solid particles) and come in 15mm tube size with a low-flow version available. The FS15 series flow switches can be operated in temperatures of up to 85°C and are WRAS approved for use in cold and hot water up to 60°C.

  • Normally open, inline flow detection switches
  • 15mm tube size
  • Low flow version available
  • Maximum operating pressure of 10 bar
  • Operating temperature range of -20°C to 85°C (WRAS approved to 60°C)
  • Maximum switching voltage of 240V AC and 120V DC
  • Can be mounted with horizontal or vertical (upward) flow direction

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for each resistor model available including the Cynergy3 FS15 series:

Cynergy3 FS15 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 FS22 Flow Switch Series

The FS22 series of normally open flow switches by Cynergy3 utilises a fixed reed switch and a moving magnet to enable accurate flow detection, while ensuring minimal fluid flow restriction. These inline switches are designed for operation in liquid flow systems with pressure of up to 10 bar (not suitable for systems containing significant amount of solid particles) and come in 22mm tube size with a low-flow version available. The FS15 series flow switches can be operated in temperatures of up to 85°C and are WRAS approved for use in cold and hot water up to 60°C.

  • Normally open, inline flow detection switches
  • 22mm tube size
  • Low flow version available
  • Maximum operating pressure of 10 bar
  • Operating temperature range of -20°C to 85°C (WRAS approved to 60°C)
  • Maximum switching voltage of 240V AC and 120V DC
  • Can be mounted with horizontal or vertical (upward) flow direction

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for each resistor model available including the Cynergy3 FS22 series:

Cynergy3 FS15 series specifications

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Cynergy3 LITTLE-EX Float Switch Series

The LITTLE-EX series of cable end float switches by Cynergy3 utilises a self-cleaning switching element to enable switching insensitive to humidity or condensation and hence use in widely fluctuating temperatures. These float switches are ATEX Ex II 1 G Ex ia IIC T6 certified and designed for use in hazardous areas. The switch is housed within a high density polyethylene floating body (please refer to the Chemical compatibility chart in Technical library) with centre of gravity carefully positioned near the cable entry. The LITTLE-EX series is supplied with 5m, 10m or 20m length of cable and can be operated in temperatures between -20°C and +40°C.

  • ATEX certified cable end float switch
  • Supplied with 5m, 10m or 20m cable
  • Self-cleaning design prevents buildup of solids
  • Switching element not affected by rapid temperature changes, humidity or condensation
  • Operating temperature range of -20°C to 40°C
  • It is necessary to use an Exia barrier with these switches
  • Contact form: C/O

Typical applications for the Cynergy3 LITTLE-EX float switches include:

  • Water tanks
  • Industrial waste water
  • Sewage

The below table gives the full specifications for each resistor model available including the Cynergy3 LITTLE-EX series:

Cynergy3 LITTLE-EX series specifications

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Cynergy3 MS Float Switch Series

The MS series of cable end float switches by Cynergy3 utilises a microswitch element activated by a moving stainless steel ball with lifetime of 200,000 operations. The switch is hermetically sealed within a HDPE casing filled with non-hygroscopic closed-cell polyurethane, enabling it to work as much as 100m deep in water. The MS series features a selection of contact forms (n/o, n/c and c/o), direct switching power and protective earth conductor included as standard (except for c/o versions). The switching element is UL, VDE and CENELEC approved. The switches are supplied with 5m length of PVC or PUR (suitable for use in fuel oils) cable with and can be operated in temperatures between 0°C and +45°C.

  • Cable end float switch
  • Microswitch switching element is UL, VDE and CENELEC approved
  • Maximum switching voltage of 250Vac and 24Vdc
  • Selection of normally-open, normally-closed and changeover contact forms
  • Operating temperature range of 0°C to 45°C
  • Selection of standard PVC cable or PUR cable suitable for use in fuel oils
  • Direct power switching
  • Cable mounting
  • 100m depth capability

Typical applications for the Cynergy3 MS series of float switches include:

  • Large tanks, cisterns and reservoirs
  • Direct installation on submersible pumps

The below table gives the full specifications for each resistor model available including the Cynergy3 MS series:

Cynergy3 MS series specifications

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Cynergy3 MS Float Switch Series (WRAS Approved)

The MS series of cable end float switches by Cynergy3 utilises a microswitch element activated by a moving stainless steel ball with lifetime of 200,000 operations. The switch is hermetically sealed within a HDPE casing filled with non-hygroscopic closed-cell polyurethane, enabling it to work as much as 100m deep in water. The MS series features a selection of contact forms (n/o, n/c and c/o), direct switching power and protective earth conductor included as standard (except for c/o versions). The switching element is UL, VDE and CENELEC approved. The switches are supplied with 5m length of WRAS approved cable with and can be operated in temperatures between 0°C and +45°C (WRAS approved to +23°C).

  • WRAS Approved Cable end float switch
  • Microswitch switching element is UL, VDE and CENELEC approved
  • Maximum switching voltage of 250Vac and 24Vdc
  • Selection of normally-open, normally-closed and changeover contact forms
  • Operating temperature range of 0°C to 45°C (WRAS approved to 23°C)
  • WRAS approved cable
  • Direct power switching
  • Cable mounting
  • 100m depth capability

Typical applications for the Cynergy3 MS series of float switches include:

  • Large tanks, cisterns and reservoirs
  • Direct installation on submersible pumps

The below table gives the full specifications for each resistor model available including the Cynergy3 MS series:

Cynergy3 MS series specifications

£0.00 Ex Tax: £0.00

Cynergy3 OLS2 Optical Liquid Level Sensor Series

The OLS2 series of low cost optical float switch liquid level sensors offers high reliability, single point liquid level detection utilising infra-red emitter and detector aligned accurately within a cone to give good optical coupling when the sensor is positioned in the air. In presence of liquid this coupling is disrupted triggering the sensor. Transistor output enables configuration for various applications. The OLS2 series is resistant to false triggering due to foaming, and is available as high or low output version and in standard (-25° to +80°C) or extended (-40°C to +125°C) temperature range.

  • Optical float switch liquid level sensor
  • Low cost sensor for general, single-point, liquid level detection
  • Highly reliable, resistant to false triggering due to foaming
  • Selection of high or low output 
  • Selection of voltage or open drain output
  • Standard (-25° to +80°C) or extended (-40°C to +125°C) temperature range
  • External mount via M12x1 thread

Typical applications for the Cynergy3 OLS2 liquid level sensor series include:

  • Tanks - side or bottom mounting
  • Any liquid media compatible with Polysulfone (please refer to the compatibility chart available in the Technical Library)

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 OLS2 series:

Cynergy3 OLS2 series specifications

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Cynergy3 RSF43 Nylon Compact Internal Fitting Float Switch Series

The RSF43 internal fitting nylon float switches are part of the RSF40 series offering compact design and a number of options including choice of maximum power (25VA or 100VA) and mounting (flying leads or M12 connector). Mounting of these switches requires access to the inside of the tank. The RSF43 switch action may be reversed by rotating the switch by 180° (make on rise - N/O or make on fall - N/C). The RSF43 float switches come with nitrile gasket as standard, are WRAS approved and can be operated in temperature range between -20°C and +75°C.

  • Compact Internal Fitting Float Switches
  • Black nylon body, supplied with nitrile gasket (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Switching action reversible by rotating the device
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -20°C and +75°C
  • Selection of flying leads or M12 electrical connection

Typical applications for the Cynergy3 RSF40 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Commercial washing machines
  • Evaporator units

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF40 series including the RSF43 switches:

Cynergy3 RSF40 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 RSF44 Polypropylene Compact Internal Fitting Float Switch Series

The RSF44 internal fitting polypropylene (PP) float switches are part of the RSF40 series offering compact design and a number of options including choice of maximum power (25VA or 100VA) and mounting (flying leads or M12 connector). Mounting of these switches requires access to the inside of the tank. The RSF44 switch action may be reversed by rotating the switch by 180° (make on rise - N/O or make on fall - N/C). The RSF44 float switches come with nitrile gasket as standard, are WRAS and NSF approved and can be operated in temperature range between -20°C and +100°C.

  • Compact Internal Fitting Float Switches
  • Opaque polypropylene body, supplied with nitrile gasket (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Switching action reversible by rotating the device
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -20°C and +100°C
  • Selection of flying leads or M12 electrical connection

Typical applications for the Cynergy3 RSF40 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Commercial washing machines
  • Evaporator units

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF40 series including the RSF44 switches:

Cynergy3 RSF40 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 RSF46 Polyphenylene Sulphide Compact Internal Fitting Float Switch Series

The RSF46 internal fitting Polyphenylene Sulphide (PPS) float switches are part of the RSF40 series offering compact design and a number of options including choice of maximum power (25VA or 100VA) and mounting (flying leads or M12 connector). Mounting of these switches requires access to the inside of the tank. The RSF46 switch action may be reversed by rotating the switch by 180°(make on rise - N/O or make on fall - N/C). The RSF46 float switches come with nitrile gasket as standard, are UL and NSF approved (and WRAS approved when used with Nitrile gasket) and can be operated in temperature range between -10°C and +120°C.

  • Compact Internal Fitting Float Switches
  • Grey Polyphenylene Sulphide (PPS) body, supplied with nitrile or viton gasket (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Switching action reversible by rotating the device
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -10°C and +120°C
  • Selection of flying leads or M12 electrical connection

Typical applications for the Cynergy3 RSF40 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Commercial washing machines
  • Evaporator units

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF40 series including the RSF46 switches:

Cynergy3 RSF40 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 RSF47 PVDF Compact Internal Fitting Float Switch Series

The RSF47 Polyvinylidene Fluoride (PVDF) float switches are part of the RSF40 series of compact internal fittings. It offers a number of options including choice of maximum power (25VA or 100VA) and option of flying leads or M12 connector. The switch action may be reversed by rotating the switch by 180°. The RSF47 float switches come with nitrile gasket as standard, are UL and NSF approved and can be operated in temperature range between -10°C and +105°C.

  • Compact Internal Fitting Float Switches
  • Green Polyvinylidene Fluoride (PVDF) body, supplied with nitrile or viton gasket (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Switching action reversible by rotating the device
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -10°C and +105°C
  • Selection of flying leads or M12 electrical connection

Typical applications for the Cynergy3 RSF40 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Commercial washing machines
  • Evaporator units

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF40 series including the RSF47 switches:

Cynergy3 RSF40 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 RSF48 Polypropylene Compact Internal Fitting Float Switch Series

The RSF48 internal fitting Polypropylene (PP) float switches are part of the RSF40 series offering compact design and a number of options including choice of maximum power (25VA or 100VA) and mounting (flying leads or M12 connector). Mounting of these switches requires access to the inside of the tank. The RSF48 switch action may be reversed by rotating the switch by 180° (make on rise - N/O or make on fall - N/C). The RSF48 float switches come with nitrile gasket as standard, are UL approved and can be operated in temperature range between -20°C and +100°C.

  • Compact Internal Fitting Float Switches
  • White polypropylene body, supplied with nitrile gasket (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Switching action reversible by rotating the device
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -20°C and +100°C
  • Selection of flying leads or M12 electrical connection

Typical applications for the Cynergy3 RSF40 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Commercial washing machines
  • Evaporator units

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF40 series including the RSF48 switches:

Cynergy3 RSF40 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 RSF53 Nylon Compact Internal Fitting Float Switch Series

The RSF53 internal fitting nylon float switches are part of the RSF50 series offering compact design and a number of options including choice of maximum power (25VA or 100VA) and mounting (1/8" mounting thread or M12 connector with nitrile gasket). The RSF53 switches can be mounted either from the bottom or from the top of the tank and therefore access to the inside of the tank is required. The switch action may be reversed by removing the float, inverting it and refitting to the stem. The RSF53 float switches are WRAS approved and can be operated in temperature range between -20°C and +75°C.

  • Compact Internal Fitting Float Switches
  • Black nylon body, M12 version supplied with with nitrile gasket  (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Supplied with 100cm PVC 16/0.2 leadouts
  • Switching action reversible by inverting the float
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -20°C and +75°C
  • Selection of 1/8" NPT mounting thread or M12x1.75 electrical connection

Typical applications for the Cynergy3 RSF50 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Printing machines
  • Chemical dosing equipment

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF50 series including the RSF53 switches:

Cynergy3 RSF50 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 RSF54 Polypropylene Compact Internal Fitting Float Switch Series

The RSF54 internal fitting Polypropylene (PP) float switches are part of the RSF50 series offering compact design and a number of options including choice of maximum power (25VA or 100VA) and mounting (1/8" mounting thread or M12 connector with nitrile gasket). The RSF54 switches can be mounted either from the bottom or from the top of the tank and therefore access to the inside of the tank is required. The switch action may be reversed by removing the float, inverting it and refitting to the stem. The RSF54 float switches are WRAS and NSF approved and can be operated in temperature range between -20°C and +100°C.

  • Compact Internal Fitting Float Switches
  • Opaque polypropylene body, M12 version supplied with with nitrile gasket  (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Supplied with 100cm PVC 16/0.2 leadouts
  • Switching action reversible by inverting the float
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -20°C and +100°C
  • Selection of 1/8" NPT mounting thread or M12x1.75 electrical connection

Typical applications for the Cynergy3 RSF50 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Printing machines
  • Chemical dosing equipment

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF50 series including the RSF54 switches:

Cynergy3 RSF50 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 RSF56 PPS Compact Internal Fitting Float Switch Series

The RSF56 internal fitting Polyphenylene Sulphide (PPS) float switches are part of the RSF50 series offering compact design and a number of options including choice of maximum power (25VA or 100VA), mounting (1/8" mounting thread or M12 connector), viton or nitrile gaskets and ETFE or PVC leadouts. The RSF56 switches can be mounted either from the bottom or from the top of the tank and therefore access to the inside of the tank is required. The switch action may be reversed by removing the float, inverting it and refitting to the stem. The RSF56 float switches are WRAS (with PVC leadouts only), NSF and UL approved and can be operated in temperature range up to -10°C to +120°C (with ETFE leadout option).

  • Compact Internal Fitting Float Switches
  • Grey PPS body (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Supplied with PVC 16/0.2 or ETFE 19/0.2 leadouts
  • Switching action reversible by inverting the float
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -10°C and +105°C (+120° for ETFE leadout option)
  • Selection of 1/8" NPT mounting thread or M12x1.75 electrical connection
  • Options with M12 connector are supplied with suitable gasket depending on the leadout type (nitrile for PVC, viton for ETFE leadouts)

Typical applications for the Cynergy3 RSF50 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Printing machines
  • Chemical dosing equipment

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF50 series including the RSF56 switches:

Cynergy3 RSF50 series specifications

£0.00 Ex Tax: £0.00

Cynergy3 RSF57 PVFD Compact Internal Fitting Float Switch Series

The RSF57 internal fitting Polyvinylidene Fluoride (PVDF) float switches are part of the RSF50 series offering compact design and a number of options including choice of maximum power (25VA or 100VA), mounting (1/8" mounting thread or M12 connector) and viton or nitrile gaskets. The RSF57 switches can be mounted either from the bottom or from the top of the tank and therefore access to the inside of the tank is required. The switch action may be reversed by removing the float, inverting it and refitting to the stem. The RSF57 float switches are NSF and UL approved and can be operated in temperature range between -10°C and +105°C.

  • Compact Internal Fitting Float Switches
  • Green PVDF body (see Chemical Compatibility sheet in Technical library for suitability with liquid media)
  • Supplied with 100cm PTFE 7/0.2 leadouts
  • Switching action reversible by inverting the float
  • Selection of maximum power rating - 25VA or 100VA
  • Temperature range between -10°C and +105°C
  • Selection of 1/8" NPT mounting thread or M12x1.75 electrincal connection
  • Options with M12 connector are offered with a selection of nitrile or viton gaskets

Typical applications for the Cynergy3 RSF50 series of float switches include:

  • Size sensitive applications
  • Vending machines
  • Printing machines
  • Chemical dosing equipment

Customisation is available on this product - speak to our technical sales team to discuss your requirement.

The below table gives the full specifications for the Cynergy3 RSF50 series including the RSF57 switches:

Cynergy3 RSF50 series specifications

£0.00 Ex Tax: £0.00