Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
LLF78YNP

LLF78YNP

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PP NITRILE

0

RSF76Y100TV

RSF76Y100TV

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NO/NC PPS

0

RSF14Y100RF

RSF14Y100RF

Sensata Technologies – Cynergy3

SENSOR LEVEL VERTICAL POLYPROP

0

RSF78Y100RM

RSF78Y100RM

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NO/NC NYLON

204

SSV66A35B135SPM12

SSV66A35B135SPM12

Sensata Technologies – Cynergy3

SD MNT DUAL SW PNT FLTSW M12

0

SH-5653

SH-5653

Sensata Technologies – Cynergy3

3 FLGE MNT FLOATSWITCH

0

RSF104Y100JN

RSF104Y100JN

Sensata Technologies – Cynergy3

VERTICAL, EXT MOUNT, N/O, 25VA

11

SSF67A25B175

SSF67A25B175

Sensata Technologies – Cynergy3

SWITCH 2 LEVEL SS NO/NC .6A

0

RSF166A25B125

RSF166A25B125

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 152MM TOTAL L

10

ILLS-G0750-D-010

ILLS-G0750-D-010

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-7.5MWG 0.5-4.5

0

RSF46H050TG

RSF46H050TG

Sensata Technologies – Cynergy3

FLOATSWITCH HORIZ 1A NO/NC PPS

0

TSF84H100D

TSF84H100D

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWTCH PP 1A

0

RSF56H050TB

RSF56H050TB

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 1A NO/NC PPS

0

SSF214X100

SSF214X100

Sensata Technologies – Cynergy3

FLOATSWITCH 1VA NC/NO HORZ SS

0

SSV66A813E34N183

SSV66A813E34N183

Sensata Technologies – Cynergy3

VERTICAL FLTSW SS 3/4NPT MNT

0

RSF84HP

RSF84HP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ 1A NO/NC POLY

0

FFSMC10A

FFSMC10A

Sensata Technologies – Cynergy3

CABLE FLOAT HORZ SPST-NO 10A

0

RSF166A25B175P

RSF166A25B175P

Sensata Technologies – Cynergy3

DL PNT FLOATSWITCH 202MM TOTAL L

5

TSF48Y100DF

TSF48Y100DF

Sensata Technologies – Cynergy3

COMP INT MNT TEMP SEN LVL SW

15

ILLSU-GI120-D-005

ILLSU-GI120-D-005

Sensata Technologies – Cynergy3

SENSOR PRES 0-120"WG 0.5-4.5V 5M

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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