ESMFS Vertical Top-Mounted Hessman Stainless Steel Multi-Float Level Switch sensor for Industrial automation and liquid monitoring field
Working Principle
The stainless steel float switch mainly consists of a float, a float rod, a switch assembly, and a housing. The float is usually made of 316L stainless steel, hollow inside, and can float on the liquid surface. The float rod connects the float to the switch assembly. When the liquid level changes, the float drives the float rod to move up and down, causing the switch assembly to close or open, thereby controlling the circuit connection or disconnection.
Product Features
1. HARTMAN Connector Advantages
Standardized Interface: Uses M20×1.5mm standard threaded interface, highly compatible, convenient for connection with pressure transmitters, PLCs, and other devices.
High Protection Level: Protection rating reaches IP65 or above, effectively preventing ingress of moisture and dust, ensuring long-term stable operation.
Easy Installation: Rotating locking mechanism design supports quick installation and removal, reducing downtime.
2. Float Switch Features
Durable Material: Float is made of stainless steel (such as 304/316L) or engineering plastics, corrosion-resistant and rust-proof, suitable for harsh environments with acids, alkalis, and salt spray.
High Sensitivity: Embedded magnet in the float triggers reed switch action with liquid level changes, fast response, accuracy error ±2mm (in water).
Multi-Point Control: Supports single-point or multi-point liquid level detection, flexible control achieved by customizing the guide rod length and float position.
Explosion-Proof Design: Some models are explosion-proof certified (e.g., Ex d IIB T4), suitable for flammable and explosive areas.
Product detail


Technical Specifications
|
TYPES |
Low pressure |
high pressure |
|
Maximum power |
10W |
50W |
|
Maximum switching voltage |
100VDC |
220VDC |
|
Maximum switching current |
0.5A |
1.5A |
|
Minimum collapse voltage |
220VDC |
300VDC |
|
Maximum load current |
1A |
3A |
|
Maximum contact resistance |
100mΩ |
100mΩ |
|
temperature range |
-20~+80 |
-20~+80 |
|
Float material |
SUS304/316 |
SUS304/316 |
|
Card spring material |
SUS304/316 |
SUS304/316 |













