SFD series sound and light alarm devices can be used with SFD-600 (BAK) series combustible gas detectors, which are widely used in various places that are easy to cause dangerous gas leaks. It can detect the concentration of combustible gas in the environment in real time and send out an alarm when the concentration exceeds a certain value, which can prevent the occurrence of fire, explosion and other accidents.
This manual describes the SFD-600 (BAK) series combustible gas detector and sound‑light alarm unit, which is designed for continuous monitoring of flammable gases in high‑temperature industrial environments. It explains how the detector transmits signals to the alarm unit and how the alarm alerts users when gas concentrations exceed preset limits.
The document covers system specifications, installation guidelines, operating procedures, regular maintenance, calibration methods, and troubleshooting steps, ensuring safe and reliable operation in hazardous areas. This manual is written in Chinese.
| Measurement range | 0-100% LEL |
|---|---|
| Alarm response time | <7 s |
| Alarm setting range | 10–30% LEL |
| Operating temperature | -10 °C to 45 °C |
| Input voltage | AC 220 V ±10%, 50/60 Hz |
| Output voltage | DC 24 V |
The alarm points are preset at OUT1 = 10% LEL and OUT2 = 30% LEL, but they can be adjusted to any value within the 10–30% LEL range.