Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
SH-3052

SH-3052

Sensata Technologies – Cynergy3

1.5 NPT FLOATSWITCH SS

0

RSF66A25B100P

RSF66A25B100P

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 127MM TOTAL L

0

RSF158HFP

RSF158HFP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA SPNO

5

PLS-020A-3PPI

PLS-020A-3PPI

PIC GmbH

WORLD'S SMALLEST MAGNETIC LEVEL

313

LR2050

LR2050

ifm Efector

ELECTRONIC LEVEL SENSOR; PNP/NPN

0

OLS710D324-003

OLS710D324-003

Sensata Technologies – Cynergy3

OPT LIQ LVL SENS 1/4 NPT MNT HI

22

RSF166B50B150P

RSF166B50B150P

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 177MM TOTAL L

5

RSF48YFP

RSF48YFP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NO/NC PP

0

TSF46Y100DF

TSF46Y100DF

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH PPS .6A

0

RSF56H100RC

RSF56H100RC

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 1A NO/NC PPS

4

RSF106HNP

RSF106HNP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA PPS

0

PLS-041B-6PAI

PLS-041B-6PAI

PIC GmbH

POWER LEVEL SENSOR

489

RSF107YNP

RSF107YNP

Sensata Technologies – Cynergy3

LEVEL SENSOR HI TEMP PVDF 25VA N

0

BCS001F

BCS001F

Balluff

SENSOR LEVEL MINI FLAT CAPAC

5

SH-7052RH

SH-7052RH

Sensata Technologies – Cynergy3

SQ FLGE MNT FLTSW REED

0

FFSMC10AW

FFSMC10AW

Sensata Technologies – Cynergy3

CABLE FLOAT HORZ SPST-NO 10A

0

RSF26Y100RF

RSF26Y100RF

Sensata Technologies – Cynergy3

FLOATSWITCH 25VA N/C HORZ PPS

0

LLF48H100RF

LLF48H100RF

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PP(UL) 1M PVC

0

RSF166A25B150

RSF166A25B150

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 177MM TOTAL L

5

LLC200D3SH

LLC200D3SH

SST Sensing

LIQUID LEVEL SENSOR

166

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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