It detects – the three most common household combustible gases.
Thermocouples (K, J, E, T, S) and RTDs (Pt100, Cu50)
| LED / Display | Meaning | | :--- | :--- | | | Steady on = Normal AC power is present. | | Yellow LED (STATE) | On or flashing = Sensor is warming up (normal after power‑up). Off = Sensor is ready. Flashing slowly = Normal monitoring mode. | | Red LED (ALARM) | Flashing rapidly = Gas leak detected! | | Digital display | Shows current gas concentration as a percentage of LEL (Lower Explosive Limit). Normal readings should be “0” or a very low number. | Brj-502 Manual
Solution: Check power across your heating element circuit. Ensure the OUT light on the controller matches the physical state of your relay.
For Relay Output models: Connect your external heating/cooling contactor circuit across the normally open (NO) contacts. It detects – the three most common household
Go to Out.Y (Output type). Choose 4-20 for linear analog output. The manual advises that if your actuator expects 0-10V, select 0-10 instead. Then set Out.L = 4.0 mA (valve closed) and Out.H = 20.0 mA (valve fully open).
High-pitched alarm, digital LED display indicating gas concentration, plug-in design for easy installation, and energy-efficient operation. Off = Sensor is ready
The provides essential operating, safety, and placement guidelines for the BRJ-502 and BRJ-502D Digital Gas Leak Detectors distributed by brands like Eksahol , Firlarm , and CPVan . This device is a high-sensitivity, plug-in safety monitor designed to protect households and commercial spaces from explosive and toxic gas leaks by providing an 85 dB audible siren coupled with visual LED warnings.
It detects – the three most common household combustible gases.
Thermocouples (K, J, E, T, S) and RTDs (Pt100, Cu50)
| LED / Display | Meaning | | :--- | :--- | | | Steady on = Normal AC power is present. | | Yellow LED (STATE) | On or flashing = Sensor is warming up (normal after power‑up). Off = Sensor is ready. Flashing slowly = Normal monitoring mode. | | Red LED (ALARM) | Flashing rapidly = Gas leak detected! | | Digital display | Shows current gas concentration as a percentage of LEL (Lower Explosive Limit). Normal readings should be “0” or a very low number. |
Solution: Check power across your heating element circuit. Ensure the OUT light on the controller matches the physical state of your relay.
For Relay Output models: Connect your external heating/cooling contactor circuit across the normally open (NO) contacts.
Go to Out.Y (Output type). Choose 4-20 for linear analog output. The manual advises that if your actuator expects 0-10V, select 0-10 instead. Then set Out.L = 4.0 mA (valve closed) and Out.H = 20.0 mA (valve fully open).
High-pitched alarm, digital LED display indicating gas concentration, plug-in design for easy installation, and energy-efficient operation.
The provides essential operating, safety, and placement guidelines for the BRJ-502 and BRJ-502D Digital Gas Leak Detectors distributed by brands like Eksahol , Firlarm , and CPVan . This device is a high-sensitivity, plug-in safety monitor designed to protect households and commercial spaces from explosive and toxic gas leaks by providing an 85 dB audible siren coupled with visual LED warnings.
