The 804 laser particle counter can measure particles greater than or equal to 0.3, 0.5, 0.7, 1.0, 2.5, 5.0, and 10 microns in total of 7 particle sizes. Users can select 4 of them to measure and display simultaneously. The built-in air pump draws air in and uses laser scattering to calculate the particle size and number. The calculation result is displayed on the instrument's LCD display screen. The measurement results can be stored in the instrument or output to a PC.
This manual provides step‑by‑step instructions for operating the Model 804 air particle counter, including how to select measurement channels, set sample time, and navigate the LCD interface. Safety warnings and calibration procedures are also covered.
Technical details such as particle size range, accuracy, flow rate, memory capacity and power specifications are listed, along with warranty information and service contacts. This manual is written in Chinese.
| Particle size range | 0.3 µm – 10 µm |
|---|---|
| Measurement channels | 0.3, 0.5, 0.7, 1.0, 2.5, 3.0, 10 µm |
| Measurement accuracy | ±1096 |
| Maximum count rate | 3,000,000 particles/ft³ |
| Flow rate | 0.1 ft³/min (2.83 L/min) |
| Sample time | 3 – 60 seconds |
| LCD display | 2 lines × 16 characters |
| Laser source | 3 mW, 780 nm |
| Power supply | 110‑240 VAC, 8.4 VDC |
| Dimensions (H×W×D) | 13.9 cm × 9.22 cm × 5.08 cm |
It measures particles from 0.3 µm up to 10 µm.
A fully charged unit operates for about 2.5 hours.
Sample time can be set between 3 and 60 seconds.
It offers seven channels: 0.3, 0.5, 0.7, 1.0, 2.5, 3.0 and 10 µm.