Internal Top Mount Multi-Level Vertical Operated Level Switch

A. Product Overview

The Internal Top Mount Multi-Level Vertical Operated Series is a top mounted float level switch used for monitoring and controlling liquid levels inside tanks and vessels. It is designed with a vertical stem and multiple floats, allowing it to detect different level points from a single top entry connection.

This level switch is available in SS304, SS316, SS316L, Nylon and Polypropylene material options depending on the liquid media and application requirement. It can be supplied with stainless steel or polypropylene floats and is suitable for different industrial and process applications.

The switch is compact, durable and easy to install. Its standard mounting is quarter inch BSP and it can also be customized as per application requirement. The switching action can be reversed by removing the float, inverting it and refitting it on the stem.

It is mainly used for multi-level indication, pump control, overflow protection, dry run prevention and liquid level automation.

B. Working Principle

The Internal Top Mount Multi-Level Vertical Operated Series works on a magnetic float and reed switch principle.

A float moves up and down along the vertical stem as the liquid level rises or falls. Inside the float, a magnet is fitted. Reed switches are placed at defined switching points inside the stem. When the float reaches a set level, the magnet activates the reed switch and gives an electrical signal.

This signal can be used to control pumps, alarms, panels, indicators or automation systems. Multiple floats can be used on one stem to provide different level signals such as low level, high level and intermediate level points.

The switching action can be configured as per requirement, making the device suitable for different tank control applications.

C. Why It Is Used

The Internal Top Mount Multi-Level Vertical Operated Series is used where more than one level point needs to be detected inside a tank from a single top mounting position.

It helps in:

• Detecting high, low and multiple liquid levels
• Preventing tank overflow
• Protecting pumps from dry running
• Automating filling and emptying operations
• Reducing manual level checking
• Sending level signals to control panels and alarms
• Improving process safety and tank operation
• Monitoring liquids in compact or restricted installation areas

This switch is useful where side mounting is not possible and where the level switch needs to be inserted from the top of the tank.

D. Suitable Buyers

This product is suitable for:

• Tank manufacturers
• Process automation companies
• Panel builders
• Machine manufacturers
• Water treatment plant manufacturers
• Chemical process industries
• Fuel storage system manufacturers
• Industrial cleaning unit manufacturers
• OEM equipment manufacturers
• Maintenance and utility departments
• Pump automation system suppliers
• Industrial project contractors
• Instrumentation and control system integrators

Applications

• Underground tanks
• Industrial cleaning units
• Water reservoir tanks
• Liquid level sensing
• Fuel tanks
• Process tanks
• Chemical tanks
• Oil tanks
• Storage tanks
• Water and wastewater tanks

FAQ

1. What is an Internal Top Mount Multi-Level Vertical Operated Level Switch?
An Internal Top Mount Multi-Level Vertical Operated Level Switch is a float type level switch installed from the top of a tank to detect multiple liquid level points using floats and reed switches.

2. Where is this level switch installed?
It is installed from the top side of the tank. The vertical stem goes inside the tank and the floats move with the liquid level.

3. What is the main use of this level switch?
It is used for liquid level detection, high level alarm, low level alarm, pump control, overflow protection and tank automation.

4. Can this switch detect multiple levels?
Yes. This switch can detect multiple levels using multiple floats and switching points. It can be designed for four switching points and can also be customized based on application needs.

5. What materials are available for this level switch?
The level switch is available in SS304, SS316, SS316L, Nylon and Polypropylene material options. The selection depends on the liquid type, temperature and chemical compatibility.

6. What type of switching is used in this product?
It uses SPST switching with magnetic reed switch operation. Higher ratings and customized switching options can also be provided based on requirement.

7. Can the switching action be changed?
Yes. The switching action can be reversed by removing the float, inverting it and refitting it on the stem.

8. Is this level switch suitable for fuel tanks?
Yes. It can be used in fuel tanks, water tanks, underground tanks and industrial liquid storage tanks, depending on material compatibility and application conditions.

9. What is the temperature range of this level switch?
The stainless steel version is suitable for temperatures from minus 40 degree Celsius to 135 degree Celsius. The polypropylene version is suitable for temperatures from minus 40 degree Celsius to 100 degree Celsius.

10. What is the pressure rating of this level switch?
The stainless steel version can handle pressure up to 4 bar, while the polypropylene version is suitable for atmospheric pressure applications.

11. Can the float size and fitting size be customized?
Yes. Float size, fitting size and process connection can be customized as per application requirement.

12. Which industries commonly use this level switch?
It is commonly used in water treatment, chemical processing, fuel storage, industrial cleaning, process automation, pump control and tank manufacturing applications.