Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
RSF83YP

RSF83YP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NYLON

25

SSF212XPM12

SSF212XPM12

Sensata Technologies – Cynergy3

HORIZ SS FLOATSW 1/2 EXT MNT

9

ILSEU-GI240-D

ILSEU-GI240-D

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-240WG 0.5-4.5V

0

OLS710D3L24-003

OLS710D3L24-003

Sensata Technologies – Cynergy3

OPT LIQ LVL SENS 1/4 NPT MNT LW

23

TSF84Y100D

TSF84Y100D

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWTCH PP .6A

0

ILSU-GI720-025

ILSU-GI720-025

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-720WG 4-20MA

0

SSF67A25B225

SSF67A25B225

Sensata Technologies – Cynergy3

DL SW PNT FLOATSW 200MM TOTAL L

0

RSF53Y100R1/8

RSF53Y100R1/8

Sensata Technologies – Cynergy3

FLOATSWITCH VERT .6A NO/NC NYL

18

SSF67B50B200

SSF67B50B200

Sensata Technologies – Cynergy3

2 LEVEL SWITCH IN SS 316 25VA P

0

RSF73Y100RN

RSF73Y100RN

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NO/NC NYLON

20

RSF73YNP

RSF73YNP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A NO/NC NYLON

8

SSF67A50A150

SSF67A50A150

Sensata Technologies – Cynergy3

DL LVL FLOATSW 177MM TOTAL L

0

RSF57H100G1/8

RSF57H100G1/8

Sensata Technologies – Cynergy3

LEVEL SENSOR VERT SPNO 100VA PVD

0

RSF66A25B75

RSF66A25B75

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA SGL 120MM

43

RSF83HP

RSF83HP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ 1A NO/NC NYLON

0

ILS-G0250-005

ILS-G0250-005

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-2.5MWG 4-20MA

0

LM10A

LM10A

Sensata Technologies – Cynergy3

FLOATSWITCH CABLE END N/O 10A

5

TSF73H100DN

TSF73H100DN

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH NYLON 1A

0

RSF106Y100JV

RSF106Y100JV

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA PPS

0

RSF84YP

RSF84YP

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ .6A POLYPROP

7

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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