Technical manual for the BBD5 dust monitoring alarm by Gao Yuan, covering operation, installation, specifications and maintenance.
The BBD5 dust monitoring alarm from Gao Yuan uses electrostatic charge sensing to detect dust particles passing a fixed probe. The system converts the charge into a relay‑switch control signal that triggers an alarm when dust emissions exceed preset limits. It is designed for online monitoring of dust emissions in various industrial dust‑removal systems such as power plants, cement factories and mining operations.
The manual provides a detailed overview of the device, a full parts and selection list, technical specifications, control‑panel description, instrument settings, probe maintenance procedures and recommended installation practices. This manual is written in Chinese.
| Operating temperature (electronics) | -20 °C ~ 60 °C |
|---|---|
| Operating humidity | 0 % – 90 % (non‑condensing) |
| Protection rating | IP66 / NEMA4 |
| Power supply | DC 18‑32 V, AC 90‑240 V 50/60 Hz |
| Signal cable | 4‑core shielded RS485 |
| Maximum duct pressure | 100 kPa (15 psi) |
| Measurement accuracy | 0.2 mg/m³ |
| Maximum cleaning air pressure | 400 kPa (60 psi) |
The BBD5 provides only a relay‑switch alarm signal; it does not output a continuous analog signal.
The signal cable between the probe and the control box should not exceed 50 meters.
Clean the probe with periodic compressed‑air blowing at up to 400 kPa (60 psi) through the built‑in air‑connection.