1. Introduction
The CPVan BRJ-502D is an independent combustible gas alarm designed to continuously monitor the concentration of indoor gas leakage. Utilizing advanced gas-sensitive sensing technology and a cost-effective microprocessor, this device provides reliable protection against potential hazards such as poisoning, explosions, and fires caused by gas leaks. When the leakage concentration reaches a preset alarm level, the detector activates a sound and light alarm. The device automatically returns to normal operation once the gas concentration falls below the alarm threshold, ensuring continuous safety for your home.
2. Important Safety Information
- Read all instructions carefully before installation and use.
- This device is designed for indoor use only.
- Do not install the detector in areas with high humidity, excessive dust, or direct exposure to steam or oil fumes, as this may affect its performance.
- Avoid placing the detector near ventilation openings, doors, or windows, which could dilute gas concentrations and delay detection.
- Do not paint the detector or block its ventilation holes.
- Regularly test the detector to ensure proper functioning.
- In case of an alarm, immediately ventilate the area, turn off gas sources, and contact emergency services if necessary.
3. Product Overview
The BRJ-502D gas detector features a compact design with an EU plug for direct wall socket installation. It includes an LCD display for real-time gas concentration, a loud alarm, and indicator lights for power, state, and alarm status.
Figure 1: Front view of the Gas Detector with EU Plug
Figure 2: Gas Detector indicating detection of Propane and Natural Gas
Figure 3: Detector's multi-gas detection capability
Figure 4: Product Dimensions
Indicator Lights:
- POWER (Green LED): Indicates the device is powered on.
- STATE (Yellow/Orange LED): Indicates normal operation or warm-up phase.
- ALARM (Red LED): Illuminates during a gas leak alarm.
Product Demonstration Video:
Video 1: Demonstration of the gas detector's physical features and plug type.
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | BRJ-502D |
| Material | ABS |
| Color | WHITE |
| Dimensions (L x W x H) | 120mm x 69mm x 55mm |
| Power Supply Voltage | AC100V~AC240V |
| Power Frequency | 50/60Hz |
| Rated Power | <2W |
| Detection Gas | Liquefied Petroleum Gas (LPG), Natural Gas, Artificial Gas (Coal Gas) |
| Alarm Concentration (LPG) | 0.1~0.5%LEL |
| Alarm Concentration (Natural Gas) | 0.1~0.3%LEL |
| Alarm Concentration (Coal Gas) | 0.1~0.5%LEL |
| Alarm Loudness | ≥85dB (at 3 meters) |
| Operating Temperature | -10℃~40℃ |
| Operating Humidity | <97%RH |
| Storage Temperature | -25℃~55℃ |
| Certification | CE |
5. Setup and Installation
- Unpack the Detector: Carefully remove the gas detector from its packaging.
- Choose an Installation Location:
- For natural gas (lighter than air): Install the detector 30cm below the ceiling, within 1.5 meters horizontally from the gas source.
- For LPG (heavier than air): Install the detector 30cm above the floor, within 1.5 meters horizontally from the gas source.
- Avoid areas near windows, doors, ventilation fans, or areas with high humidity or steam.
- Plug In the Detector: Insert the EU plug of the detector directly into a standard AC100V~AC240V wall socket.
- Initial Warm-up: Upon plugging in, the detector will enter a warm-up phase. The POWER (green) LED will illuminate, and the STATE (yellow/orange) LED may flash or remain steady. The LCD display might show a countdown or '0'. This phase typically lasts a few minutes.
- Ready for Operation: Once the warm-up is complete, the POWER (green) and STATE (yellow/orange) LEDs should be steady, and the LCD display should show '0' (indicating no gas detected). The detector is now operational.
6. Operating Instructions
Normal Operation:
During normal operation, the green POWER LED and yellow/orange STATE LED will be steadily lit. The LCD display will show '0', indicating that no combustible gas is detected in the environment.
Alarm Condition:
If the detector senses a combustible gas concentration reaching the alarm threshold:
- The red ALARM LED will flash.
- An audible alarm (≥85dB) will sound continuously.
- The LCD display will show the detected gas concentration level.
Action during Alarm:
- Immediately open all windows and doors to ventilate the area.
- Turn off all gas appliances and the main gas supply valve.
- Do not operate electrical switches, light matches, or create any ignition sources.
- If the alarm persists, evacuate the premises and contact your gas supplier or emergency services.
Self-Test Function:
The detector may have a self-test button (often the large circular button on the front). Press and hold this button briefly to initiate a self-test. The device should emit a test alarm sound and flash its LEDs to confirm functionality. Refer to the specific product for exact self-test procedures.
7. Maintenance
- Regular Cleaning: Gently wipe the exterior of the detector with a soft, damp cloth. Do not use harsh detergents, solvents, or abrasive cleaners. Ensure no liquid enters the ventilation holes.
- Avoid Obstructions: Ensure that the ventilation holes on the detector are not blocked by dust, dirt, or other objects.
- Periodic Testing: Test the detector at least once a month using the self-test function to ensure the alarm and indicators are working correctly.
- Sensor Longevity: Gas sensors have a limited lifespan. While this device uses a high-quality semiconductor sensor, it is recommended to replace gas detectors every 5-7 years for optimal performance.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Detector does not power on | No power to the socket; device malfunction. | Check the power supply to the socket. Try plugging into a different working socket. If still no power, the device may be faulty. |
| False alarms | Interference from strong odors (e.g., alcohol, cleaning agents, aerosols); detector placed too close to gas appliances. | Ventilate the area. Relocate the detector if it's too close to sources of strong fumes. Ensure proper installation location as per section 5. |
| Alarm sounds continuously without gas presence | Sensor contamination or end-of-life. | Clean the detector. If the issue persists after ventilation and cleaning, the sensor may be faulty or at the end of its operational life. Consider replacing the unit. |
| LCD display shows error code or abnormal reading | Internal fault or sensor issue. | Unplug the detector for 30 seconds and plug it back in. If the error persists, the device may require replacement. |
9. User Tips
- For optimal performance, ensure the detector is installed at the correct height relative to the type of gas you are monitoring (natural gas is lighter than air, LPG is heavier).
- Regularly check the power indicator to confirm the device is receiving power.
- Avoid placing the detector in direct sunlight or near heat sources, as this can affect sensor accuracy.
10. Frequently Asked Questions
- Q: Is this product compliant with CE legislation?
- A: Yes, the CPVan BRJ-502D Digital Natural Gas Detector is CE certified, indicating compliance with European safety, health, and environmental protection requirements.
11. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the seller's specific terms and conditions or contact the retailer where the product was purchased. Keep your proof of purchase for any warranty claims.
