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+86 189 8978 2810

EFQS-HM180 High Temperature Cable Float Switch(Mercury Switch Type)

Retail Price $80.00
Case Quantity
Minimum : 0 Maximum : Unlimited

Mercury switch type (no mechanical wear)

High temperature resistance up to 180°C

Stainless steel float and housing

Silicone cable (heat resistant)

Suitable for harsh environments

Switching angle ±10° for more sensitivity

Long service life

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Application

180°C High-Temperature Liquid Tanks

Boilers & Heating Applications

Industrial Liquid Level Control Systems

Oil & Chemical Storage Applications

Water Supply & Wastewater Treatment

Description

Description Background

The EFQS-HM180 automatic float level switch is a high-temperature resistant liquid level controller designed for reliable operation in demanding environments. Compared with standard micro switch versions, it adopts a mercury switch that withstands temperatures up to 180°C while maintaining excellent stability and switching accuracy. The device features a 304 stainless steel housing and high-temperature resistant silicone cable, ensuring reliable performance under extreme heat, humidity, and corrosive conditions.

With its built-in mercury contact design, the EFQS-HM180 provides precise switching operation without mechanical wear, supporting long-term continuous use. It is widely used in tanks, wells, and industrial liquid control systems for water, oil, and weak chemical liquids, making it especially suitable for high-temperature applications such as boilers, heating systems, and other demanding industrial environments.

Features

01RELIABLE
Built with high-quality silicone cable and 0.75 mm² conductors, the float switch offers excellent flexibility, heat resistance, and durability. The larger conductor cross-section helps ensure stable current transmission and reliable electrical performance during long-term operation.
High-Quality Silicone Cable with 0.75 mm² Conductors
High-Quality Silicone Cable with 0.75 mm² Conductors
02PRECISE SWITCHING
The high-sensitivity mercury switch provides responsive switching for automatic liquid level control. Its stable switching action supports reliable level detection and consistent operation in demanding applications.
Mercury Switch for Automatic Level Control
Mercury switch for automatic liquid level control
03HIGH-TEMPERATURE RESISTANCE
Designed for temperatures up to 180°C, the high-temperature-resistant cable helps maintain stable performance under demanding thermal conditions. It is suitable for applications requiring reliable liquid level control in high-temperature environments.
High-Temperature Resistant Design
High-Temperature Resistant Float Level Switch Design
04LONG SERVICE LIFE
Made with high-quality components and a durable construction, the float switch is designed for long-term operation and consistent liquid level control. Its robust design helps maintain reliable performance in demanding working environments.
Durable Construction for Long Service Life
Durable Construction for Long Service Life

Technical Details

Product Type:

Cable Float Switch

Product Model:

EFQS-HM180

Material:

304/316 Stainless Steel (housing & float), Silicone cable

Size:

See attached drawing

Float Switch Type:

Mercury Switch Type

Operating Temperature:

0°C to +180°C

Working Voltage:

0~24V

Control Range:

Liquid level difference >30cm

Contact Switch:

Mercury Switch

Float Ball Density:

0.69g/cm³

Lead Length:

2m / 3m / 4m / 5m / 10m (customizable)

Core Material:

Tin-plated Copper

Wire Diameter Specification:

0.75mm²

Installation Type:

Cable Suspended Type

Accessories

We reserve the right to make technical alterations without prior notice.
EFQS-HM180-A10 High-Temperature Cable Float Switch (Mercury-Type) Instruction Manual
Dimensions

What makes EFQS-H different from a standard float switch?

EFQS-H uses a 304 stainless steel housing combined with a sealed industrial-grade structure, offering better durability and suitability for both household and industrial liquid level control compared to basic plastic float switches.

Can this float switch work in dirty or sewage water?

Yes. The sealed structure and corrosion-resistant materials allow stable operation in sewage, wastewater, and slightly contaminated liquids.

How is the switching signal generated?

The internal switch is mechanically triggered by the float movement. As the liquid level rises or falls, the float tilts and activates the internal contact to switch the circuit.

What role does the counterweight play?

The stainless steel counterweight helps stabilize the cable position and ensures the float operates at a fixed switching point for more accurate level control.

Is the cable suitable for outdoor or humid environments?

Yes. The silicone cable is flexible, anti-aging, and resistant to moisture and chemical exposure, making it suitable for harsh environments.

What installation conditions should be considered?

The switch should be installed vertically or with free swing space to ensure the float can move naturally without obstruction.

Can it control both filling and draining systems?

Yes. It can be used for both filling control and drainage control systems, depending on the wiring configuration.

What type of maintenance does it require?

It is a low-maintenance device. Regular inspection for cable condition and float movement is usually sufficient.

Is it suitable for small tanks or limited space installations?

Yes. Its compact structure allows installation in small tanks and narrow spaces where traditional level switches may not fit.

What is the expected service life in real use?

Thanks to the mercury switch design without mechanical wear, it offers longer service life and stable performance in high-temperature environments.

How to choose between micro switch and mercury switch?

The micro switch type is suitable for general applications, while the mercury switch type is ideal for high-temperature environments and more stable switching performance.

Is installation complicated?

No, the installation is simple. The float switch can be installed directly using the cable and counterweight for positioning.

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