Multiple Selectable Particle Sizes (World’s First)  

5, 10, 20, 30, 50, 100 μm

Smart Touchscreen-Easy On-Site Maintenance  

 4.3″touchscreen: address setting, easy replacement

Stable, Durable, Long-Life Design  

10-year laser source, 24/7 operation

Multi-Level Alarms & Safety Protection  

>85 dB alarm; over‑limit alert

Multi-Protocol Communication & Strong Expandability  

RS485/TCP/WiFi/4G, customizable protocol, local data storage, external sensors

1、High-precision sensor, accurate counting, excellent performance

2、Compact size for convenient installation

3、4.3-inch intelligent touchscreen, rapid response, human-machine interaction, real-time display of monitoring data.

4、More professional industrial design, ensuring complete functional interfaces while maintaining aesthetics

5、Can set its own instrument address directly on the screen for easy on-site replacement

6、Calibration due alert to remind customers of metering/calibration

7、Screen data alarm and real-time flow monitoring. When connected to an independent pump, it automatically adjusts the flow rate in real-time to ensure flow stability and counting accuracy.

8、10-year service life imported semiconductor laser diode (calibration required annually)

9、RS485 communication, supports Modbus RTU protocol, and customized communication protocols

10、Intelligent IoT capabilities allow for remote start/stop, more accurate cleanliness level management, and enhanced monitoring quality

11、USB data export functionality, effective local data storage for over a month to prevent data loss (optional)

12、Real-time monitoring of particle quantities with particle sizes of 5μm, 10μm, 20μm, 30μm, 50μm, and 100μm

13、Built-in audio-visual alarm light, >85db

14、Counter can be equipped with a wireless antenna, upgraded to wireless transmission mode (optional)

15、Expandable analog input hardware interfaces, allowing for external connections to temperature and humidity sensors, airspeed sensors, pressure differential sensors, etc. (optional)

Model：KQET-5128A

Particle Size Range：5μm~100μm

Particle Size Channels：5μm, 10μm, 20μm, 30μm, 50μm, 100μm

Counting Efficiency：50%±10% @ 5μm; 100%±10% ＞ 7.5μm

Maximum Sampling Concentration：17000 particles/L, Concentration over-limit protection with self-purification reminder

Repeatability Error：±5%FS

Self-Purification Time：≤5min

Sampling Flow Rate：28.3L±5%, real-time monitoring, over-limit alarm

Laser Source：10-year long service life imported semiconductor laser diode

Vacuum Source：External vacuum source, 3-year service life

Display：4.3-inch touchscreen

Power Supply：DC24V/1A

Communication Mode：RS485 @ Modbus RTU

Enclosure：304 stainless steel

Dimensions (mm)：Width 213 * Depth 137 * Height 71

Operating Environment：Temperature 0~40°C, Humidity 10%~90% (no condensation)

Storage Environment：Temperature -10~50°C, Humidity 0~90% (no condensation)