| Image | Part Number | Description / PDF | Quantity | Rfq |
|---|---|---|---|---|
 |
Carlo Gavazzi |
LVL SNSR COND 2 PROBE PTFE |
0 |
|
|
Parallax, Inc. |
MINI LIQUID LEVEL SENSOR |
10 |
|
|
Carlo Gavazzi |
LVL SNSR OPTICAL POLYS PNP QDC |
0 |
|
|
Sensata Technologies – Cynergy3 |
FLOAT SWITCH 100VA NYLON NITRILE |
0 |
|
|
Carlo Gavazzi |
SEN LVL OPTICAL PNP NO |
0 |
|
|
SST Sensing |
LIQUID LEVEL SENSOR |
0 |
|
|
Carlo Gavazzi |
LVL SNR OPT POLY NIBR PNP CBL |
0 |
|
|
Carlo Gavazzi |
SEN LVL COND 3 PROBE PTFE |
0 |
|
|
Carlo Gavazzi |
SEN LVL COND 3 PROBE 1IN PP |
0 |
|
|
Wickmann / Littelfuse |
REED SENSOR W/INTEGRAL FLOAT |
0 |
|
|
Standex Electronics |
SENSOR LEVEL FLOAT SPST-NO |
0 |
|
|
Carlo Gavazzi |
SEN LVL OPTICAL MOD NPN NO |
0 |
|
|
TE Connectivity Measurement Specialties |
VCS-01 LIQUID LEVEL SENSOR |
0 |
|
|
Carlo Gavazzi |
LVL SNSR COND 1 PROBE NYLON |
0 |
|
|
Sensata Technologies – Cynergy3 |
FLOAT SWITCH 25VA NYLON NITRILE |
0 |
|
|
SST Sensing |
LIQUID LEVEL SENSOR |
19 |
|
|
Carlo Gavazzi |
SEN LVL OPTICAL GLASS NPN |
0 |
|
|
Sensata Technologies – Cynergy3 |
FLOATSWITCH HORIZ 1A N/C PPS |
0 |
|
|
TE Connectivity Measurement Specialties |
LDS309-11N LIQUID LEVEL SENSOR |
0 |
|
|
Carlo Gavazzi |
LVL SNSR CAP NYLON 1 5 IN THD |
0 |
|
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.
| Type | Functional Characteristics | Application Examples |
|---|---|---|
| Magnetic Float Switches | Hermetically sealed contacts activated by float movement | Water tanks, fuel storage |
| Mechanical Lever Arm | Physical linkage translating float motion to potentiometer | Industrial boilers, hydraulic systems |
| Guided Tube Float | Float moves along a vertical tube, triggering reed switches | Chemical processing, corrosive environments |
| Optical Float Sensors | Combines float mechanism with infrared detection | Medical equipment, cleanrooms |
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.
| Parameter | Description | Importance |
|---|---|---|
| Measurement Range | 0.1 10 meters | Determines application suitability |
| Accuracy | 1 3% FS | Process control reliability |
| Output Signal | 4 20 mA, 0 10V, SPST | System integration capability |
| Environmental Temp. | -40 C to +85 C | Operational stability |
| Process Connection | 1/2" 4" NPT, DIN | Installation compatibility |
| Material Compatibility | PVDF, SS316, EPDM | Chemical resistance |
| Manufacturer | Key Product | Features |
|---|---|---|
| Siemens | Float Switch Series 8ME | ATEX-certified, 0.1% repeatability |
| Honeywell | LM Series Level Switches | 316SS construction, SIL2 rated |
| TE Connectivity | Mini-Level Switch | Compact 6mm diameter design |
| Endress+Hauser | Prosonic M Float Switch | Dual-limit detection with IO-Link |
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
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