
EM15-221 High-Sensitivity Mercury Cable Float Level Switch
High-sensitivity mercury float level controller
Automatic liquid level adjustment and pump control
Stable mercury switch with reliable conductivity
Suitable for sewage, oil, and weak chemical liquids
Easy installation with maintenance-free operation
Multiple cable lengths available for customization

Application

Sewage & Wastewater Systems

Water Tanks & Reservoirs

Oil & Chemical Liquid Containers

Pump Control Systems

Industrial Storage Tanks
Description

The EM15-221 Mercury Cable Float Level Controller is a high-sensitivity float switch designed for automatic liquid level control in tanks, pits, wells, sewage systems, and industrial liquid containers. Equipped with a mercury switch structure, it provides stable switching performance, reliable conductivity, and smooth operation for automatic pump and level control applications.
Featuring automatic adjustment, easy installation, and maintenance-free operation, the EM15-221 is built with a durable polypropylene float body that offers excellent corrosion resistance and stable buoyancy. The robust cable design ensures reliable performance in sewage, oil, weak acid, and weak alkali liquid environments.
Multiple controllers can be connected for advanced applications, including dry-run pump protection, dual-pump control, and multi-point liquid level management systems, making it ideal for long-term industrial operation.
Features




Technical Details
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Accessories
What type of switch does this product use?
What are the advantages of a mercury switch?
What environments is this product suitable for?
Can it automatically control water pumps?
Can multiple float switches be used together?
Is installation complicated?
Is the cable length customizable?
Can it be used in corrosive liquid environments?
What is the recommended liquid level difference?
Does it require a contactor?
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