Float, Level Sensors

Image Part Number Description / PDF Quantity Rfq
ILSE-G0250-D

ILSE-G0250-D

Sensata Technologies – Cynergy3

SENSOR PRESSURE 0-2.5MWG .5-4.5V

0

TSF44H100DF

TSF44H100DF

Sensata Technologies – Cynergy3

THERMISTOR FLOAT SWITCH PP 1A

0

SSF67A25B75PM12

SSF67A25B75PM12

Sensata Technologies – Cynergy3

DL LVL FLOATSW 102MM TOTAL L

0

RSF76H100RN

RSF76H100RN

Sensata Technologies – Cynergy3

FLOATSWITCH HORZ 1A NO/NC PPS

15

SSF67B50B250PM12

SSF67B50B250PM12

Sensata Technologies – Cynergy3

DL LVL FLOATSW 277MM TOTAL L

0

MC05B

MC05B

Sensata Technologies – Cynergy3

FLOAT SENS LIQ SPST-NC .25A

0

FFSMC10AU

FFSMC10AU

Sensata Technologies – Cynergy3

CABLE FLOAT HORZ SPST-NO 10A

0

RSF157YGP

RSF157YGP

Sensata Technologies – Cynergy3

LEVEL SENSOR HI TEMP VERT SPST 2

0

MC05A

MC05A

Sensata Technologies – Cynergy3

FLOAT SENS LIQ SPST-NO .25A

0

RSF86Y050T

RSF86Y050T

Sensata Technologies – Cynergy3

FLOATSWITCH 25VA EXT PPS N/O

12

RSF108Y100JN

RSF108Y100JN

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA PP

0

RSF16H100RF

RSF16H100RF

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 1A NO/NC PPS

0

SSF25XPM12

SSF25XPM12

Sensata Technologies – Cynergy3

FLOATSW M16 WITH M12 CONN

0

RSF26Y050TG

RSF26Y050TG

Sensata Technologies – Cynergy3

DROP FLOAT, SPNC 25VA, PPS, 50 C

0

RSF66A25B125

RSF66A25B125

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA SGL 152MM

23

OLS210D324-003

OLS210D324-003

Sensata Technologies – Cynergy3

OPT LIQUID SENSOR M12 EXT MT HI

3

LLF47H100GF

LLF47H100GF

Sensata Technologies – Cynergy3

FLOAT SWITCH 25VA PVDF 1M PTFE 7

0

RSF66A25B100

RSF66A25B100

Sensata Technologies – Cynergy3

FLOATSWITCH VERT 25VA SGL 127MM

12

OLS700D3SH

OLS700D3SH

Sensata Technologies – Cynergy3

OPT LIQ LVL SENS 1/4 NPT MNT HI

981

SSF67A25B100

SSF67A25B100

Sensata Technologies – Cynergy3

SWITCH 2 LEVEL SS NO/NC .6A

3

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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