(also sold as BRJ-502D) is a plug-in digital gas leak detector designed to monitor for flammable gases including Natural Gas (methane), (propane, butane), and Urban Coal Gas Key Specifications Sensor Type: Semiconductor gas sensor. Power Source: AC 100V – 240V, 50/60Hz. Warm-up Time: Approximately 3 minutes (180 seconds). Alarm Volume: Digital Display: Shows gas concentration levels from 0 to 9 or "A". Indicator Lights & Display The unit features three primary status indicators: POWER (Green): Stays on to indicate the unit is receiving power. STATE (Yellow/Green): Flashes during the warm-up period. ALARM (Red): Flashes when gas concentration reaches dangerous levels. Display Value Status Description Normal; no combustible gas detected. Low concentration; POWER light on, no audible alarm.
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- Remove the blue drain plug (bottom face). Drain accumulated condensate until clear air exits.
- Inspect exhaust muffler (Port R). If clogged, replace—do not clean with solvent.
Chapter 6: Maintenance and Firmware Updates
6.1 Routine Maintenance Schedule
The Brj-502 Manual recommends:
2. Device Overview
The BRJ-502 is a functional accessory used in conjunction with rail-mounted terminal blocks. Its primary function is to create electrical bridges between adjacent terminals, facilitating common potential distribution.
Inaccurate Readings