Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
LLF47YFP

LLF47YFP

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PVDF NITRILE

0

SSV66A35B160SPM12

SSV66A35B160SPM12

Sensata Technologies – Cynergy3

SD MNT DUAL SW PNT FLTSW M12

0

RSF66A25B175

RSF66A25B175

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA SGL 202MM

0

LLF46YFP

LLF46YFP

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PPS NITRILE

0

TSF76Y100DN

TSF76Y100DN

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH PPS .6A

0

SSF67B50B150PM12

SSF67B50B150PM12

Sensata Technologies – Cynergy3

DL LVL FLOATSW 177MM TOTAL L

1

RSF66A50A150

RSF66A50A150

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA DUAL 184MM

0

ILSE-G0700-5

ILSE-G0700-5

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-7MWG 4-20MA

0

LLF74H100RN

LLF74H100RN

Sensata Technologies – Cynergy3

FLOAT SWITCH 100VA PP 1M PVC NIT

0

RSF157HGP

RSF157HGP

Sensata Technologies – Cynergy3

LEVEL SENSOR HI TEMP VERT SPST 1

0

SH-5151RH

SH-5151RH

Sensata Technologies – Cynergy3

2 FLGE MNT FLOATSWITCH REED

0

TSF88Y100D

TSF88Y100D

Sensata Technologies – Cynergy3

1/2NPT MNT TEMP SEN FLOATSW

1

SSH66TE34NPS

SSH66TE34NPS

Sensata Technologies – Cynergy3

SHORT FLOAT HORIZ SS .1A EXT MNT

1

RSF43Y100RF

RSF43Y100RF

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NYLON

30

ILSEU-GI360-D

ILSEU-GI360-D

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-360WG 0.5-4.5V

0

MP1C-3

MP1C-3

Sensata Technologies – Cynergy3

AUTOCLAVE LEVEL SWITCH 3M

0

ILSEU-GI480-D

ILSEU-GI480-D

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-480WG 0.5-4.5V

0

SSH66XE34NP

SSH66XE34NP

Sensata Technologies – Cynergy3

SWITCH HORIZ SS .5A NO/NC

7

ILLS-G0750-5-010

ILLS-G0750-5-010

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-7.5MWG 4-20MA

0

RSF77YNP

RSF77YNP

Sensata Technologies – Cynergy3

HORIZ SPNO 25VA PVDF NITRILE M12

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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