： Implementation standards :
GBZ / T 159-2004 "Sampling Code for Monitoring of Hazardous Substances in the Air of Workplaces"
： Scope of application :
。 The instrument is an ideal instrument for air monitoring and sampling at workplaces at all levels of safety supervision, disease prevention and control centers, colleges and universities, scientific research institutions, industrial and mining enterprises and environmental monitoring stations .
The sampler consists of an imported vacuum pump, a microcomputer controller, a multifunctional liquid crystal display, a sealed battery pack with repeated charge, discharge, overcurrent and short circuit protection, and a digital flow module. 。 The shell of this series of instruments is injection molded, which has flame retardant, moisture-proof and anti-static properties .
： Main features :
1. The working process of the sampler is completed by the computer software and hardware, and the degree of intelligence is high;
2 , the man-machine interface adopts ultra-low power LCD and two-button design, which can be completed with one hand;
3. The sampler is equipped with a vacuum pump imported from abroad. The pump has a small volume, low heat generation during long-term operation, reliable operation, low power consumption, high vacuum, and long life.
50mL/min 、 100 mL/min 、 200mL/min ）； 4 , using digital flowmeter, can quickly switch the set flow value (fixed to 50mL / min , 100mL / min , 200mL / min );
5 小时； 5 , the instrument uses a lithium battery pack, specially designed short-circuit current protection device, no battery memory effect, large capacity, long life, charging time is not greater than 5 hours;
6. The instrument can be automatically locked during operation to prevent accidental reset of parameters during sampling and manual unlocking;
200mL/min 流量采样时，正常负载条件下（约 4.5KPa ），连续采样时长大于 8 小时； 7 , when the instrument is sampling at 200mL / min flow rate, under normal load conditions (about 4.5KPa ), the continuous sampling time is longer than 8 hours;
。 8. Use method: Sampling is carried out by a person who is working in the workplace with a waist pack .
： The main parameters :