Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
LLF78Y100RN

LLF78Y100RN

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PP(UL) 1M PVC

0

LLF77YNP

LLF77YNP

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PVDF NITRILE

0

LLF76HNP

LLF76HNP

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PPS NITRILE

0

LLF74Y100RN

LLF74Y100RN

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PP 1M PVC NITR

0

LLF77Y100GN

LLF77Y100GN

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PVDF 1M PTFE

0

RSF57Y100X1/8

RSF57Y100X1/8

Sensata Technologies – Cynergy3

FLOATSWITCH VERT .6A NO/NC PPS

0

RSF106H100JV

RSF106H100JV

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA PPS

0

LLF76H100RN

LLF76H100RN

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PPS 1M PVC NI

0

LLF77HNP

LLF77HNP

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PVDF NITRILE

0

LLF73Y100RN

LLF73Y100RN

Sensata Technologies – Cynergy3

FLOAT SWITCH NYLON 1M PVC

0

LLF77HVP

LLF77HVP

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PVDF VITON

0

LLF73Y100RM

LLF73Y100RM

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA NYLON 1M PVC S

0

LLF77Y100GV

LLF77Y100GV

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PVDF 1M PTFE

0

LLF76Y100RN

LLF76Y100RN

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PPS 1M PVC NIT

0

LLF78HNP

LLF78HNP

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PP NITRILE

0

SSF216XPL

SSF216XPL

Sensata Technologies – Cynergy3

FLOAT SENS LIQ SPST-NC/NO .5A

1

LLF74YNP

LLF74YNP

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PP NITRILE

0

LLF73H100RN

LLF73H100RN

Sensata Technologies – Cynergy3

FLOAT SWITCH NYLON 1M PVC

0

RSF76HNP

RSF76HNP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ 1A NO/NC PPS

0

RSF16YFP

RSF16YFP

Sensata Technologies – Cynergy3

SENSOR LEVEL VERTICAL POLYPROP

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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