Float, Level Sensors

Image	Part Number	Description / PDF	Quantity	Rfq
	943F4Y2D1DO300E Honeywell Sensing and Productivity Solutions	ULTRASONIC LEVEL SENSOR	0
	POS187413 Honeywell Sensing and Productivity Solutions	POS LIQUID LEVEL SENSOR	0
	943-T4Y-2D001-130E Honeywell Sensing and Productivity Solutions	ULTRASONIC LEVEL SENSOR	0
	LRNV51S42 Honeywell Sensing and Productivity Solutions	LNR FLOAT SWITCH	0
	LRNH30S12 Honeywell Sensing and Productivity Solutions	LNR FLOAT SWITCH	0
	LRNR51N01 Honeywell Sensing and Productivity Solutions	LNR FLOAT SWITCH	0
	943F4V2D1C0330E Honeywell Sensing and Productivity Solutions	ULTRASONIC LEVEL SENSOR	0
	FRN21112 Honeywell Sensing and Productivity Solutions	LIQUID LEVEL SENSOR	0
	LLN865182-2 Honeywell Sensing and Productivity Solutions	LLN LIQUID LEVEL SENSOR	0
	LRNR31S41 Honeywell Sensing and Productivity Solutions	LNR FLOAT SWITCH	0
	943T4Y2D1D0130E Honeywell Sensing and Productivity Solutions	ULTRASONIC LEVEL SENSOR	0
	943F4Y2D1C0330E Honeywell Sensing and Productivity Solutions	ULTRASONIC LEVEL SENSOR	0
	FRN22212 Honeywell Sensing and Productivity Solutions	LIQUID LEVEL SENSOR	0
	POS287412 Honeywell Sensing and Productivity Solutions	POS LIQUID LEVEL SENSOR	0
	LRNV30N41 Honeywell Sensing and Productivity Solutions	LNR FLOAT SW VERTICAL NYLON	0
	943F4Y2D1D0330E Honeywell Sensing and Productivity Solutions	ULTRASONIC LEVEL SENSOR	0
	POS187411 Honeywell Sensing and Productivity Solutions	POS LIQUID LEVEL SENSOR	0
	POS287312 Honeywell Sensing and Productivity Solutions	POS LIQUID LEVEL SENSOR	0
	943F4Y2D1C0300E Honeywell Sensing and Productivity Solutions	ULTRASONIC LEVEL SENSOR	0
	LRNR31N01 Honeywell Sensing and Productivity Solutions	LNR FLOAT SWITCH	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

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

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

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

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

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

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