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Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
TSF88H100D

TSF88H100D

Sensata Technologies – Cynergy3

1/2NPT MNT TEMP SEN FLOATSW

0
RSF156HFP

RSF156HFP

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 100VA SPNO

3
RSF106Y050TV

RSF106Y050TV

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA PPS

14
RSF86H050T

RSF86H050T

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ 1A NO/NC PPS

0
LLF48Y100RF

LLF48Y100RF

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PP(UL) 1M PVC

0
FFSMC10CU

FFSMC10CU

Sensata Technologies – Cynergy3

CABLE FLOAT HORZ SPST-NC 10A

0
SSV66A35B235SPM12

SSV66A35B235SPM12

Sensata Technologies – Cynergy3

SD MNT DUAL SW PNT FLTSW M12

0
ILLSU-GI480-D-016

ILLSU-GI480-D-016

Sensata Technologies – Cynergy3

SENSOR PRES 0-480MWG 0.5-4.5V 16

0
RSF73HNP

RSF73HNP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ 1A NO/NC NYLON

0
ILSEU-GI048-D

ILSEU-GI048-D

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-48WG 0.5-4.5V

0
LLF44Y100RF

LLF44Y100RF

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PP 1M PVC 16/0

0
TSF76H100DN

TSF76H100DN

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH PPS 1A

24
RSF124Y030KC

RSF124Y030KC

Sensata Technologies – Cynergy3

MIN HORIZONTAL FLOAT SWITCH M12

4
RSF54Y100R1/8

RSF54Y100R1/8

Sensata Technologies – Cynergy3

FLOATSWITCH VERT .6A NO/NC POLY

39
TSF86H100D

TSF86H100D

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH PPS 1A

0
RSF166A25B100

RSF166A25B100

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 127MM TOTAL L

5
RSF66B50B100

RSF66B50B100

Sensata Technologies – Cynergy3

FLOATSWITCH 25VA DUAL VERT 127MM

0
LLF44YFP

LLF44YFP

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PP NITRILE

28
SSV66A100E1GP

SSV66A100E1GP

Sensata Technologies – Cynergy3

SWITCH VERT SS G1 MNT

0
SSF212X100-14G

SSF212X100-14G

Sensata Technologies – Cynergy3

HORIZ SS FLOATSW 1/2 EXT MNT

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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