Flame Proof Air Curtain Sensor – Safe & Reliable Door Detection for Hazardous Areas

1L-AC-102 FLP Air Curtain Sensor

Flameproof Air Curtain Sensors are made to provide an accurate door position detection and automatic air curtain activation in hazardous environments where safety and explosion protection are important. Manufactured using a forged aluminium enclosure, these sensors provides exceptional mechanical strength, corrosion resistance, and long-term durability, making them an ideal for demanding industrial applications.

The sensor incorporates a flameproof aluminium-bodied magnetic reed switch, connected using flameproof Teflon-insulated wires and heavy-duty steel connectors to makes sure the reliable electrical performance even under high temperatures and hard operating conditions. Every component is carefully selected to provide them a stable operation while maintaining the integrity of the flameproof system.

This hard construction makes the sensor perfect for installation in oil & gas plants, chemical industries, pharmaceutical facilities, paint booths, solvent storage areas, and other hazardous or potentially explosive environments where conventional sensors cannot be used safely. By combining a forged aluminium body, aluminium magnetic reed switch, flameproof Teflon wiring, and steel connectors, the 1 LEAP Flameproof Air Curtain Sensor provides dependable automatic air curtain operation while helping industries meet stringent safety requirements in flame-prone and explosive atmospheres.

Flame Proof Air Curtain Sensor

Table 1: Electrical Specifications

Parameter

Value

Notes

Power Input

220V AC

To be attached to Magnetic Switch (NO) – Model: 1L-MSM-201 AL FLP

Power Output

220 V AC

Operating Temp

around 65° C

Load Capacity

20 Amp.

Table 2: Magnetic Switch Specifications

Parameter

Value

Part Number

1L-MSM-201 Al-FLP 

Type

Normally Open (NO, 1 Form A)

Contact Rating

10 W/VA

Switching Voltage (Max)

200 VDC

Switching Current (Max)

0.5 Amp

Product Overview

A Flameproof Air Curtain Sensor is a specially enclosed detection device that combines the accuracy of an Air Curtain Sensor with a flameproof forged aluminium housing rated for hazardous locations. The sensor uses a high-quality Magnetic Reed Sensor to detect door movement and instantly signal the air curtain control system to switch ON or OFF. The flameproof enclosure prevents any internal spark or heat from igniting surrounding flammable gases, vapours, or dust — making it ideal for oil & gas facilities, chemical plants, refineries, and other explosion-prone industrial environments due to its Flameproof Teflon wire.

By pairing dependable sensing performance with flameproof construction, this sensor allows industries to automate air curtain operation without compromising on safety compliance.

Key Features

  • Flameproof Enclosure: Rugged, sealed forged aluminium housing made to contain any internal spark and prevent ignition of surrounding hazardous atmospheres.
  • Reliable Magnetic Switch Operation: Uses an accurate Magnetic Switch mechanism for consistent, contact-based door position detection as it also made up of aluminium body.
  • Accurate Door Detection: The built-in Magnetic Reed Sensor makes sure the air curtain activates only when the door is actually open, avoiding energy wastage.
  • Fast, Dependable Response: Instantly signals the air curtain unit the moment door movement is detected.
  • Industrial-Grade Durability: Constructed to withstand harsh conditions, dust, moisture, and continuous operational cycles due to its forged aluminium housing.
  • Explosion-Safe Design: Perfect for use in Zone-classified hazardous areas as per standard flameproof safety requirements.
  • Easy Integration: Simple two-wire steel connector compatible with standard air curtain control systems and the wire is made up of Flameproof Teflon wire .
  • Long Service Life: Made using high-quality magnetic reed components rated for millions of operating cycles.

By pairing dependable sensing performance with flameproof construction, this sensor allows industries to automate air curtain operation without compromising on safety compliance.

How the Flame Proof Air Curtain Sensor Works

The Flameproof Air Curtain Sensor regularly monitors the door’s open/close position using its Magnetic Reed Sensor.

When the door opens:

The Magnetic Switch detects the change in magnetic field as the door moves away from the sensor.

A signal is instantly sent to the air curtain control unit.

The air curtain switches ON, forming a barrier against dust, insects, fumes, and temperature exchange — critical in dangerous industrial zones.

When the door closes:

The magnet realigns with the reed switch, restoring contact

The sensor signals the air curtain to switch OFF automatically.

This reduces unnecessary power consumption and extends the operational life of the air curtain motor.

Because the entire unit is housed in a forged aluminium body, this switching action takes place safely — without risk of spark exposure to the surrounding atmosphere.

Why a Flameproof Design Matters

In industries where flammable gases, vapours, or combustible dust are present, standard sensors pose a serious safety risk. A Flameproof Air Curtain Sensor is purpose-built to contain any potential internal ignition source within its enclosure, preventing it from triggering an explosion in the external environment. This makes it an important safety component for:

  • Oil & gas processing units
  • Chemical and petrochemical plants
  • Paint and solvent manufacturing units
  • Pharmaceutical production facilities
  • Fuel storage and dispensing areas
  • Gas bottling and LPG facilities
  • Hazardous industrial warehouses

Applications

  • Flameproof Zone Entry Points
  • Chemical Plant Doorways
  • Oil & Gas Facility Entrances
  • Industrial Roll-Up Doors in Hazardous Areas
  • Explosive Atmosphere Warehouses
  • Petrochemical Processing Units
  • Fuel & Gas Storage Facilities

Benefits of Using a Flameproof Air Curtain Sensor

  • Enables safe automation in explosion-prone areas
  • Reduces energy loss through accurate door detection
  • Minimizes manual intervention and human error
  • Increases the operational lifespan of the air curtain
  • Supports compliance with hazardous area safety standards
  • Delivers dependable, long-term performance in demanding conditions

Why Choose Us?

As a trusted manufacturer of Magnetic Switches, and Air Curtain Sensors, we bring the same accuracy and reliability to our Flameproof Air Curtain Sensor range. Every unit is factory tested for accuracy and durability before dispatch, makes sure the consistent performance even in the most demanding hazardous environments.

We support businesses all over process industries, oil & gas, chemical manufacturing, and industrial warehousing with sensors built for safety-critical automation. Whether you need a single unit or a bulk industrial order, our team provides complete technical guidance — from product selection to installation support.

We Also Provide Other variants of Air Curtain Sensor :-  1L-AC-101S, 1L-AC-101SB, 1L-PS11

Conclusion

A Flameproof Air Curtain Sensor is an important safety and automation component for industries operating in hazardous or explosive environments. By combining a flameproof enclosure with a dependable and Magnetic Reed Sensor, this sensor provides an accurate door detection and automated air curtain control without compromising on safety. As a trusted supplier of industrial sensing solutions, we are dedicated to providing reliable, and long-lasting Air Curtain Sensor technology customized according to your operational needs.