Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
SSF67A50A200PM12

SSF67A50A200PM12

Sensata Technologies – Cynergy3

DL LVL FLOATSW 227MM TOTAL L

1

RSF66A50A100

RSF66A50A100

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA DUAL 134MM

0

RSF54H100RC

RSF54H100RC

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 1A NO/NC POLY

0

SSF215XPM12

SSF215XPM12

Sensata Technologies – Cynergy3

LONG REACH 1/2 EXT MNT SS FS

19

SSV66A35B85SM16

SSV66A35B85SM16

Sensata Technologies – Cynergy3

SD MNT DUAL SW PNT FLTSW M22

0

OLS500D3L

OLS500D3L

Sensata Technologies – Cynergy3

OPT LIQUID LVL SENSOR M10 MNT LW

20

RSF158YFP

RSF158YFP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA SPNO

20

LLF77YVP

LLF77YVP

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PVDF VITON

0

SSF29X100

SSF29X100

Sensata Technologies – Cynergy3

FLOATSWITCH 50VA NC/NO VERT SS

0

RSF14YFP

RSF14YFP

Sensata Technologies – Cynergy3

SENSOR LEVEL VERT 25VA SPNC PP

0

TSF48H100DF

TSF48H100DF

Sensata Technologies – Cynergy3

COMP INT MNT TEMP SEN LVL SW

0

SSF67A25B250PM12

SSF67A25B250PM12

Sensata Technologies – Cynergy3

DL LVL FLOATSW 277MM TOTAL L

4

RSF34W100RF

RSF34W100RF

Sensata Technologies – Cynergy3

FLOAT SWITCH HORZ SPST-NO

17

SSF212X100H

SSF212X100H

Sensata Technologies – Cynergy3

HORIZ SS FLOATSW 1/2 EXT MNT

0

OLS210D3L24-003

OLS210D3L24-003

Sensata Technologies – Cynergy3

OPT LIQUID SENSOR M12 EXT MT LOW

13

TSF86Y100D

TSF86Y100D

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH PPS .6A

0

RSF103H100JN

RSF103H100JN

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA NYLON

0

LM10B

LM10B

Sensata Technologies – Cynergy3

FLOATSWITCH CABLE END N/C 10A

0

SSF67A50A250PM12

SSF67A50A250PM12

Sensata Technologies – Cynergy3

DL LVL FLOATSW 277MM TOTAL L

0

ILTSU-GI048-003

ILTSU-GI048-003

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-48WG 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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