Brj-502 Manual [work] -
Flashes aggressively when combustible gas levels surpass the designated safe threshold.
The BRJ-502 is a , designed primarily for home use. It works by continuously monitoring the air for the presence of flammable gases such as natural gas (methane), liquefied petroleum gas (LPG, propane/butane), and coal gas . When the concentration of gas in the air reaches a preset dangerous level, the device triggers both a loud audible alarm and a flashing visual alert, immediately warning you of a potential leak.
For Relay Output models: Connect your external heating/cooling contactor circuit across the normally open (NO) contacts.
Ensure your sensor and heater are wired correctly and powered on. Set your desired target temperature (). Brj-502 Manual
Lubricate the joints and rails using a manufacturer-approved lubricant.
The BRJ-502 series of gas detectors are an affordable and simple method to add a crucial layer of defense to your home environment. As you've learned from this guide, this device serves as a silent, vigilant guardian, designed to operate seamlessly in the background of your daily life. By understanding its simple installation process, its status indicators, and the basics of testing and maintenance, you're taking a proactive step toward ensuring the safety of your household against the silent threat of a gas leak.
Areas subject to extreme moisture, steam, or water splashing. Maintenance & Safety Precautions Flashes aggressively when combustible gas levels surpass the
Installing your BRJ‑502 gas detector is straightforward, but proper placement is critical for it to work correctly.
No matter which specific model you have, the core functionality and safety principles remain the same.
Thermocouples (K, J, E, T, S) and RTDs (Pt100, Cu50) When the concentration of gas in the air
Shows the current real-time temperature (Process Value).
: Once gas levels reach a preset threshold (typically around 3% LEL), a loud siren (≥85dB) sounds to alert residents. Setup and Installation
Install the detector 1–3.3 feet (0.3–1.0 meters) below the ceiling , within a 5-foot (1.5-meter) radius of the gas source (e.g., stove, heater).
Displays current gas concentration and device status.
uses a numerical scale (typically 1–9) to represent gas concentration levels : Alarm Action No alarm; green power light stays on. 1 – 2 No audible alarm; standard monitoring. 3 – 5 Low Leakage Slow "Di... Di..." sound; STATE/ALARM lights flash red. 6 – 9 High Leakage Rapid "DiDiDi..." sound; STATE/ALARM lights flash quickly. A Dangerous Leak Over 9% LEL; fastest alarm sound and light flashing. 4. Emergency Procedures If the alarm sounds (levels 3 or higher):