MS-15/N GAZEX Sensory Module Propane-Butane

Overview

The MS‑15/N sensor module is designed for detecting propane‑butane (LPG) mixtures in gas detection systems. Equipped with a semiconductor sensor and an integrated processor, the device monitors gas concentration and generates two threshold alarm signals (10 % and 30 % LEL). This solution is suitable for both industrial installations and public facilities where a rapid response to LPG leaks is critical for safety.

Features and Benefits

• Replaceable sensor unit – the entire module can be removed and replaced or calibrated without dismantling the detector from the installation. Installers save time and service costs, while end users do not need to interrupt system operation.
• Built-in microprocessor records operational history: number of alarms, duration of alarm states, and number of threshold exceedances. This enables easy assessment of how frequently hazardous situations occur and supports decisions regarding potential setting adjustments.
• Threshold binary outputs – two independent signals (10 % and 30 % LEL) allow connection of both simple indicator lamps and more advanced control systems (e.g., valve closure).
• Optical indication – built-in LEDs indicate the sensor status without requiring additional wiring.
• Compatibility with existing detectors – the module is compatible with the DEX‑15/N, DEX‑A15/N, and DG‑15/N/MR series, enabling modernization of older systems without replacing the entire installation.
• Flexibility when changing substances – in case of a change in the monitored gas type, only the sensor module needs to be replaced with one suitable for the new medium, significantly accelerating system adaptation to new production requirements.

Application and Installation

The module is surface-mounted at a selected location on the detector, using standard DC control voltage. Thanks to its compact dimensions (approx. 75 × 120 × 170 mm), it occupies minimal space and can be easily integrated into existing control panels. Ideal for:

• industrial plants processing LPG,
• warehouses and fuel stations,
• public facilities with gas installations,
• distributed systems requiring rapid sensor replacement during changes in technological processes.

Thanks to the ability for self-calibration and storage of operational data, both installers and system operators gain full control over safety status without the need for costly downtime.