Cable Float Level Switch
Cable Float Level Switch is an efficient way of automatically controlling the level of fluids in storage vessels like tanks, reservoirs, and sumps. This switch will help regulate your pump and control the required level of fluid without running into the problem of overflow and dry running. The switch is made from a polypropylene float attached to a cable.
Overview
The Cable Float Level Switch is suspended within the tank by means of the flexible cable. With the changing liquid levels, the float moves, and the switch turns itself on automatically in order to control pumps or level alarms.
For automatic tank filling and emptying operations, a mercury-free microswitch is used to achieve dependable electrical switching action.
It is made of a polypropylene housing and therefore can be used for water, wastewater, sewage, and other applications.
The adjusting counterweight helps set the switching points at the desired operation level.
Features
- Magnetic reed switch operating principle.
- Compact and maintenance-free construction.
- Reliable high and low level switching.
- Suitable for corrosive and non-corrosive liquids.
- No external power required for switch operation.
- Multiple switching points available on a single stem.
- Rugged stainless steel and engineering plastic construction.
- Easy installation with threaded or flanged mounting.
- Suitable for tanks, vessels, and process equipment.
- Long service life with repeatable switching performance.
Specifications
| Wetted Part Material | SS304, SS316, PP, PVDF |
| Float Material | SS304, SS316, PP, PVDF |
| Process Connection | Screwed BSP / NPT, Flanged (ASA, BS, DIN) |
| Switch Type | Reed Switch |
| Switch Output | SPST / SPDT |
| Electrical Rating | 230 VAC, 24 VDC |
| Cable Entry | Weatherproof Housing |
Process Parameters
- Application: Water, Oils, Chemicals & Other Industrial Liquids
- Specific Gravity: Minimum 0.7
- Operating Temperature: Up to 150°C
- Operating Pressure: Up to 10 Kg/cm²
- Mounting: Vertical (Top Mounted)
Working Principle
Horizontal Mounting and Float Travel
The Side Mounted Magnetic Level Switch is mounted horizontally in the side of the tank/vessel, and the float within the chamber rises and falls depending on the change in the liquid level.
Float Arm Rotation
The float travel will make the arm rotate at its pivot point due to the rise and fall of the liquid level. In corrosive application conditions, the use of SS316 material may be required.
Transfer of Magnetic Action
Permanent magnets mounted on the float mechanism travel with the float. There is no physical contact of the liquid with the electronic parts because of the magnetic transfer through the sealed chamber wall.
Activation of Switch
If the float travels to the desired level, the magnetic field makes the switching mechanism operate; the microswitch shifts its contacts and creates the electrical signal.
Control Signals
Signals are generated for alarm (high/low level), pumps, valves, and other industrial purposes.
Available Options
Material of Construction (MOC)
- Float Body: Pure Polypropylene (PP)
- Internal Contact: Silver Alloy
Cable Insulation Configurations
- Standard Utility: PVC insulated copper cable
- Chemical / High Thermal Resistance: Silicon cable variant
Technical Switch Ratings
- Switch Mechanism: Microswitch Type, SPDT (Single Pole Double Throw)
- Contact Sequence Form: NO – C – NC (Normally Open – Common – Normally Closed)
- Current Operational Load: 10 Amp resistive, 250 VAC
- Maximum Inductive Load: 16 Amp capacity
- Supply Voltage Limits: 110V / 240V AC dual compatibility
Process Boundaries & Design Limits
- Maximum Temperature Threshold: Up to 100°C
- Maximum Hydrostatic Pressure: Up to 2 Kg/cm²
- Minimum Medium Density: 0.7 g/cm³
- Ingress Protection Level: IP68 hermetically sealed non-toxic enclosure
Installation & Mechanical Options
- Standard Cable Length: 2 meters (extendable via custom length requests)
- Switching Differential: Field-adjustable switching angle limits (45° ± 15°) utilizing an adjustable counterweight arrangement
- Medium Compatibility Calibration: Factory-configured variants optimized for clean water, chemical solvents, industrial effluent, sewage, and raw chemical wastewater applications
Why Cable Float Level Switch
Automatic Control of Pumps: The Cable Float Level Switch makes the control of fluid levels possible and thus serves well for filling up tanks, draining tanks and also for preventing overflow.
Durable Build: This type of switch is built using polypropylene housing and is made to suit water, wastewater, and compatible process fluids for industrial applications.
Adjustable Switching Level: The adjustable counterweight will make it easy to adjust the switching level to the needed level without any changes being made to the setup.
Switching Reliability: A mercury free microswitch is used in the switch to give reliable electrical signals for pumps and PLC controlled systems.
Frequently Asked Questions
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