Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
RSF44Y100RF

RSF44Y100RF

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A POLYPROP

24

TSF46H100DF

TSF46H100DF

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH PPS 1A

0

SSH66TE34N100S

SSH66TE34N100S

Sensata Technologies – Cynergy3

SHORT FLOAT HORIZ SS .1A EXT MNT

0

SSV66A35B110SPM12

SSV66A35B110SPM12

Sensata Technologies – Cynergy3

SD MNT DUAL SW PNT FLTSW M12

0

RSF107HNP

RSF107HNP

Sensata Technologies – Cynergy3

LEVEL SENSOR HI TEMP VERT EXT PV

0

SSF67A25B250

SSF67A25B250

Sensata Technologies – Cynergy3

DL LVL FLOATSW 277MM TOTAL L

0

LLF59Y100JC004

LLF59Y100JC004

Sensata Technologies – Cynergy3

FLOATSWITCH VERT .6A NC/NO NYLON

0

ILTSU-GI360-015

ILTSU-GI360-015

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-360WG 4-20MA

0

RSF64EXS

RSF64EXS

Sensata Technologies – Cynergy3

FLOATSWITCH VERT .6A NO ADJ

0

LLF73YNP

LLF73YNP

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA NYLON NITRILE

0

TSF73Y100DN

TSF73Y100DN

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH NYL .6A

0

RSF156YFP

RSF156YFP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA SPNO

4

RSF66A25B150

RSF66A25B150

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA SGL 177MM

0

SSF67V70S500

SSF67V70S500

Sensata Technologies – Cynergy3

SENSOR LEVEL 70-500MM 4-20MA

0

RSF86YP

RSF86YP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NO/NC PPS

10

TSF43H100DF

TSF43H100DF

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SW NYLON 1A

0

LITTLE-EX-5M

LITTLE-EX-5M

Sensata Technologies – Cynergy3

FLT SW FOR HAZARD AREA 5M CABLE

1

MS20CU

MS20CU

Sensata Technologies – Cynergy3

CABLE FLOAT SPDT 20A PVC

0

RSF166A25B150P

RSF166A25B150P

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 177MM TOTAL L

5

ILSE-G0100-5

ILSE-G0100-5

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-1MWG 4-20MA

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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