1、 Execution standards：

HJ/T374-2007 Technical Requirements and Testing Methods for Total Suspended Particle Samplers

HJ/T375-2007 "Technical Requirements and Testing Methods for Environmental Air Samplers"

GBZ/T 159-2017 Sampling Specification for Monitoring Hazardous Substances in Workplace Air

Scope of Application：

This instrument collects the captured inhalable dust particles through an impact filter membrane and weighs them for measurement. It is suitable for routine and emergency monitoring of gaseous substances and aerosols by various levels of occupational health testing institutions, industrial and mining enterprises, safety supervision, research institutes, education and other departments.

3、 Main features：

1. Adopting a specially designed scraper pump made of rare earth materials, with stable flow rate;

2. The sampling time can be set arbitrarily within 99 hours and 59 minutes;

3. The instrument adopts a multifunctional timing control module and a power-saving backlight design;

4. The instrument battery uses lithium batteries without battery memory effect, which do not need to be discharged before charging. The battery level of the instrument can be displayed graphically on the LCD screen, and a battery compartment has been added for easy battery replacement, ensuring normal daily sampling work;

5. Adopting quasi digital flow compensation technology to maintain constant flow during long-term sampling;

6. The instrument has a sampling pause function and three modes for users to choose from: immediate sampling, delayed sampling, and cyclic sampling;

7. Optional respiratory cutter, capable of collecting respiratory dust or total dust samples;

8. Single and dual channel dust sampling function (optional).

4、 Main parameters：