High-Precision Sensor – Nearly 50% Better Than Standard  

Particle sizes 0.3、0.5、1、3、5、10 μm; concentration error ≤20%

Smart Touchscreen – Easy On‑Site Maintenance  

4.3″touchscreen: address setting, local/online use, easy replacement

Stable, Durable, Long-Life Design  

10-year laser source & 3-year vacuum source, low vibration & noise, 24/7 operation

Multi-Level Alarms & Safety Protection  

1 CFM flow monitoring&self-adjustment; >85dB alarm; over‑limit alert,Protective gas sheath prevents contamination& corrosion for stable long-term measurement

Multi-Protocol Communication & Strong Expandability  

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

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

2、Integrated design for easy installation

3、4.3-inch intelligent touch screen with fast response, human-computer interaction, and real-time display of monitoring data

4、28.3L/min high-flow sampling improves both sampling accuracy and efficiency

5、Internal vacuum source with 3-year long service life, low vibration, low noise and stable performance, ensuring counting accuracy

6、Supports 7×24 hours of uninterrupted continuous operation with stable and reliable operation

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

8、Can be started and stopped locally independently, serving as both a standalone and online device

9、Device communication address can be set through the touch screen for convenient on-site replacement

10、Calibration expiration reminder to prompt customers for measurement/calibration

11、Equipped with screen alarm function to display abnormal data in real time; with a flow sensor to monitor flow in real time and adjust flow automatically in real time, ensuring flow stability and counting accuracy

12、Equipped with protective gas jacket function, which wraps the sampling gas with coaxial clean gas flow to prevent optical cavity pollution, condensation and corrosion, ensuring long-term stable measurement

13、Imported semiconductor laser diode with 10-year long service life (needs annual calibration)

14、Supports RS485 + Ethernet dual communication methods, adopts standard Modbus protocol, and can customize exclusive communication protocols on demand to adapt to various industrial control scenarios

15、Intelligent IoT, supporting remote start and stop

16、Real-time monitoring of particle quantities with particle sizes of 0.3µm, 0.5µm, 1.0µm, 3.0µm, 5.0µm and 10.0µm

17、The counter is equipped with an acoustic and optical alarm light, >80db

18、The counter can be equipped with a wireless antenna to upgrade to wireless transmission mode (optional)

19、Expandable, with analog interface, which can be connected to external temperature and humidity sensors/wind speed sensors/differential pressure sensors, etc. (optional)

Model：KQET-5108LJ / KQET-5108LMJ

Particle Size Range：0.3µm~10.0µm

Standard Particle Size Channels：0.3，0.5，1.0，3.0，5.0，10.0μm

Maximum Sampling Concentration：35000 particles/L, concentration over-limit protection, and prompts instrument self-cleaning

Repeatability Error：±5%FS

Self-Cleaning Time：≤5min

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

Sampling Cycle：1-9999s, adjustable

Continuous Operation：Supports 24-hour uninterrupted stable operation

Laser Light Source：Imported semiconductor laser diode with 10-year service life

Vacuum：Internal vacuum source with 3-year service life

Display：4.3-inch touch screen

Power Supply：DC24V/4A

Data Storage：20000 entries

Communication Method：Supports RS485+TCP dual communication, Modbus protocol

Calibration Standard：JJF1190-2008, ISO21501-4

Shell：Stainless Steel

Dimensions (mm)：Width 300 * Depth 132 * Height 250

Weight：4.9kg

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

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