Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
RSF104H100JN

RSF104H100JN

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA PP

0

SSF67A25B150PM12

SSF67A25B150PM12

Sensata Technologies – Cynergy3

DL LVL FLOATSW 177MM TOTAL L

0

RSF47Y100GF

RSF47Y100GF

Sensata Technologies – Cynergy3

FLOAT SENS LIQ SPST-NC/NO .6A

138

MC05AH

MC05AH

Sensata Technologies – Cynergy3

FLOAT SENS LIQ SPST-NO .25A

1

SSF212XPL

SSF212XPL

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ 50VA NC/NO SS

7

RSF166B50B150

RSF166B50B150

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 177MM TOTAL L

4

SLP4AP15

SLP4AP15

Sensata Technologies – Cynergy3

PROBE SUBMERSIBLE 25VA 15M CABLE

2

RSF157YFP

RSF157YFP

Sensata Technologies – Cynergy3

LEVEL SENSOR HI TEMP VERT SPST 2

0

RSF154HFP

RSF154HFP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA SPNO

0

OLS210D3SH

OLS210D3SH

Sensata Technologies – Cynergy3

FLOAT SENS LIQ PUSH-PULL 2.5MA

28

RSF83Y100R

RSF83Y100R

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NYLON

37

RSF106H100JN

RSF106H100JN

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA PPS

0

RSF18Y100RF

RSF18Y100RF

Sensata Technologies – Cynergy3

FLOATSWITCH VERT .6A NO/NC PP

0

RSF107YVP

RSF107YVP

Sensata Technologies – Cynergy3

LEVEL SENSOR HI TEMP VERT EXT PV

0

RSF26H050TG

RSF26H050TG

Sensata Technologies – Cynergy3

FLOATSWITCH HORIZ 1A N/C PPS

0

LLF77H100GV

LLF77H100GV

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PVDF 1M PTFE V

0

RSF14HFP

RSF14HFP

Sensata Technologies – Cynergy3

SENSOR LEVEL VERT 100VA SPNC PP

0

RSF166A50A150

RSF166A50A150

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 184MM TOTAL L

4

LLF47Y100GG

LLF47Y100GG

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PVDF 1M PTFE

0

TSF74Y100DN

TSF74Y100DN

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH PP .6A

0

Float, Level Sensors

1. Overview

Float level sensors are electromechanical devices that measure liquid levels using buoyancy principles. They consist of a floating element mechanically linked to a sensing component, providing continuous or point-level detection. These sensors play a critical role in industrial automation, ensuring process efficiency, safety, and resource optimization across sectors like water treatment, energy, and manufacturing.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Magnetic Float SwitchesHermetically sealed contacts activated by float movementWater tanks, fuel storage
Mechanical Lever ArmPhysical linkage translating float motion to potentiometerIndustrial boilers, hydraulic systems
Guided Tube FloatFloat moves along a vertical tube, triggering reed switchesChemical processing, corrosive environments
Optical Float SensorsCombines float mechanism with infrared detectionMedical equipment, cleanrooms

3. Structure and Components

A typical float level sensor comprises: - Float Element: Hollow cylinder made of stainless steel, plastic, or titanium - Guide Mechanism: Rigid rod or cable for vertical movement guidance - Sensing Assembly: Reed switches, potentiometers, or Hall-effect sensors - Enclosure: IP65-rated housing with process connections (NPT, flanges) - Electrical Interface: Terminal block or industrial connectors (M12, etc.) The design ensures reliable operation in media with specific gravity 0.5 and temperatures up to 200 C.

4. Key Technical Specifications

ParameterDescriptionImportance
Measurement Range0.1 10 metersDetermines application suitability
Accuracy 1 3% FSProcess control reliability
Output Signal4 20 mA, 0 10V, SPSTSystem integration capability
Environmental Temp.-40 C to +85 COperational stability
Process Connection1/2" 4" NPT, DINInstallation compatibility
Material CompatibilityPVDF, SS316, EPDMChemical resistance

5. Application Fields

  • Water/Wastewater Treatment: Reservoir level monitoring
  • Oil & Gas: Crude oil storage tank level detection
  • Pharmaceuticals: Reactor vessel fill control
  • Power Generation: Cooling tower water level management
  • Food & Beverage: Syrup level detection in processing tanks

6. Leading Manufacturers and Products

ManufacturerKey ProductFeatures
SiemensFloat Switch Series 8MEATEX-certified, 0.1% repeatability
HoneywellLM Series Level Switches316SS construction, SIL2 rated
TE ConnectivityMini-Level SwitchCompact 6mm diameter design
Endress+HauserProsonic M Float SwitchDual-limit detection with IO-Link

7. Selection Recommendations

Key considerations include: - Media properties (corrosiveness, viscosity, density) - Required measurement range and resolution - Electrical requirements (analog/digital output) - Environmental conditions (vibration, ambient temperature) - Hazardous area classification (ATEX, IECEx) - Maintenance accessibility and calibration frequency

8. Industry Trends

Emerging developments include: - Integration with wireless communication protocols (WirelessHART) - Multiparameter sensors combining level, temperature, and pressure - Self-powered IoT-enabled devices using energy harvesting - Advanced materials for extreme pH environments - Smart diagnostics with predictive maintenance capabilities

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