Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
RSF46HFP

RSF46HFP

Sensata Technologies – Cynergy3

FLOATSWITCH HORIZ 1A NO/NC PPS

0

FM10-SMD03-NONO

FM10-SMD03-NONO

SMD Sensors

DUAL SWITCH 6" LONG 1/2" NPT,INT

23

RSF26H100RF

RSF26H100RF

Sensata Technologies – Cynergy3

FLOATSWITCH HORIZ 1A N/C PPS

0

RSF153HFP

RSF153HFP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA SPNO

0

PLS-041B-3PAI

PLS-041B-3PAI

PIC GmbH

STANDARD LEVEL SENSOR

462

ILS-G1000-015

ILS-G1000-015

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-10MWG 4-20MA

0

SSF67B50B200PM12

SSF67B50B200PM12

Sensata Technologies – Cynergy3

DL LVL FLOATSW 227MM TOTAL L

0

RSF84Y100R

RSF84Y100R

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A POLYPROP

46

RSF166B50B100

RSF166B50B100

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 127MM TOTAL L

5

PLS-041B-6PPI

PLS-041B-6PPI

PIC GmbH

POWER LEVEL SENSOR

497

RSF56H100R1/8

RSF56H100R1/8

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 1A NO/NC PPS

0

80649-000

80649-000

TE Connectivity Measurement Specialties

LS809-32 LIQUID LEVEL SENSOR

0

VNYI4

VNYI4

Carlo Gavazzi

SEN LVL COND 4 PROBE NYLON

0

VPC105

VPC105

Carlo Gavazzi

LVL SNR COND 1 PROBE 0 5IN PVC

0

LLC610D3L24-003

LLC610D3L24-003

SST Sensing

LIQUID LEVEL SENSOR

0

VPP110

VPP110

Carlo Gavazzi

LVL SNSR COND 1 PROBE 1IN PP

0

81501-000

81501-000

TE Connectivity Measurement Specialties

VS801-51 VERTICAL LEVEL SENSOR

0

20017785-00

20017785-00

TE Connectivity Measurement Specialties

LS309-52 LIQUID LEVEL SENSOR

0

RSF106HVP

RSF106HVP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA PPS

0

RSF16HFP

RSF16HFP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 1A NO/NC PPS

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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