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 and wastewater systems
Water tanks and reservoirs
Oil tanks and liquid containers
Weak acid and weak alkali liquid systems
Pump control systems
Industrial storage tanks
Water wells and underground tanks
Automatic liquid level control systems
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, the product provides stable switching performance, reliable conductivity, and smooth operation for automatic pump and liquid level control applications. It features automatic adjustment, easy installation, simple operation, and maintenance-free performance.
The polypropylene float body offers good corrosion resistance and stable buoyancy, making it suitable for sewage, oil, weak acid, and weak alkali liquid environments. The durable cable structure supports long-term industrial operation.
Two or more controllers can also be used together for dry-run protection and multi-point pump control systems.
Features
- High-sensitivity mercury switch structure
- Suitable for sewage, oil, weak acid, and weak alkali liquids
- Automatic liquid level adjustment
- Stable switching performance with reliable conductivity
- Easy installation and simple operation
- Maintenance-free long-term operation
- Corrosion-resistant polypropylene float body
- Supports multi-point pump control applications
Technical Details
Product Type:
Float Level Controller
Product Model:
EM15-221 Mercury Version
Material:
Polypropylene
Type:
Mercury Switch Type Float Level Controller
Operating Temperature:
0°C to +80°C
Working Voltage:
0~24V
Power Range:
<750W / 1500W
Control Range:
Liquid level difference >30cm
Contact Switch:
Mercury Switch
Float Ball Density:
0.69g/cm³
Lead Length:
5m / 10m / 20m (customizable)
Wire Diameter Specification:
0.5mm² / 1.0mm²
Installation Type:
Cable Suspended Type
Product Color:
Orange / Black (depending on model)
Applicable Liquids:
Sewage, oil, weak acid, weak alkali liquids
Accessories
What type of switch does this product use?
The product uses a high-sensitivity mercury switch structure with stable conductivity and reliable switching performance.
What are the advantages of a mercury switch?
Mercury switches offer: High sensitivity Smooth switching action Stable electrical conductivity Reliable long-term operation
What environments is this product suitable for?
It is suitable for: Sewage and wastewater systems Oil tanks and liquid containers Weak acid and weak alkali liquids Water tanks and reservoirs Industrial liquid level control systems
Can it automatically control water pumps?
Yes. The float switch can automatically start or stop pumps according to liquid level changes.
Can multiple float switches be used together?
Yes. Multiple controllers can be connected together for dry-run protection, multi-point liquid level control, and dual-pump systems.
Is installation complicated?
No. The cable suspended structure makes installation simple and convenient.
Is the cable length customizable?
Yes. Standard cable lengths include 5m, 10m, and 20m. Custom lengths are also available.
Can it be used in corrosive liquid environments?
Yes. The polypropylene float body provides good resistance to sewage, oil, weak acid, and weak alkali liquids.
What is the recommended liquid level difference?
The recommended liquid level difference is greater than 40cm for stable operation.
Does it require a contactor?
When the load exceeds 12W, a contactor is recommended to improve safety and extend service life.
Similar Products
The EDPS series differential pressure switch is a special type of control switch. It is a kind of switch that controls closing or opening based on the pressure difference between mutual components and relies on electrical signals for information transmission.
Floats are available in 1–4 pieces (optional,or more), and the rod length can be customized.
Notes:Float switches cannot directly control solenoid valves, high-power relays, AC contactors, etc. A small relay HH45P is required for transition.
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Small and exquisite
stable performance
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