Gas detector DEX-4K/N ammonia, 5/15% LEL, F4-C design, catalytic sensor, brass housing

Gas detectors DEX/F – reliable protection against hazards

The DEX/F series gas detectors are devices designed for continuous monitoring of dangerous concentrations of gases or vapors in enclosed spaces. They signal exceeding two alarm thresholds, ensuring a quick response in emergency situations. The explosion-proof design and a wide range of available sensors make these detectors applicable in many industries and public facilities.

Application and functionality

DEX/F detectors work with various GAZEX control modules (MD-1, MD-2, MD-4, MDP-1, MDP-4, MDP-8, MDP-16, MDD-1), allowing for the construction of complex gas detection systems. These devices are particularly useful in places where there is a risk of explosion, poisoning, or fire caused by the presence of hazardous substances. Thanks to ATEX certification, the detectors can be used in explosion-hazard zones (IIA, IIB, IIC) with different temperature classes (T1-T6).

DEX-4K/N model specifics

The specific model DEX-4K/N is designed to detect ammonia (NH3) in the concentration range of 5/15% LEL. It is equipped with a catalytic sensor characterized by high sensitivity and selectivity. The housing made of brass ensures durability and corrosion resistance. The F4-C version indicates a specific housing design adapted to specific working conditions. The catalytic sensor allows it to react more slowly to short current surges, therefore it tolerates starting devices with an engine well. It protects the circuit against overload and short circuit - like most circuit breakers in this class.

Key features and benefits

• Versatility: The ability to cooperate with various GAZEX control modules allows you to tailor the system to individual needs.
• Safety: ATEX certification guarantees safe use in potentially explosive atmospheres.
• Durability: Made of high-quality materials ensures long-lasting and reliable operation of the device.
• Precision: The catalytic sensor provides an accurate measurement of ammonia concentration.
• Ease of use: Replaceable sensor modules facilitate maintenance and calibration of the device.
• High quality workmanship: Detectors are calibrated in their own GAZEX Calibrating Laboratory accredited according to PN-EN ISO/IEC 17025.
• Modularity: Simple construction and the possibility of replacing components facilitate assembly and servicing.
• Wide range of applications: Ideal for monitoring ammonia concentrations in industrial plants, cold stores, sewage treatment plants and other facilities where there is a risk of this gas emission.

Additional information

It is important to remember the correct placement of the detector – for gases lighter than air (like ammonia) it is recommended to mount it in the upper part of the room, and for heavier gases – close to the ground. Regular calibration of the detector is crucial to ensure its proper operation and measurement reliability. In case of doubts regarding installation or configuration of the device, please consult a specialist or refer to the operating instructions provided by the manufacturer.