1. Product introduction

DDY-8 personal explosion-proof dust and poison dual-purpose sampler (mine-used individual atmospheric sampler, mine-used individual dust sampler), the instrument strictly complies with the "National Labor Hygiene and Workshop Air Monitoring Standards" and HBC 2- 2001 "Ambient Air Sampler" JJG 956-2000 "Atmospheric Sampler" and "MT162-95 General Technical Conditions for Dust Sampler in Workplace", Exibl level explosion-proof design standard in GB3846.4-2000 standard and research and development and production, is the measurement work It is a special necessary instrument for the average concentration of toxic and harmful gases in the day. It has the characteristics of small sampling airflow pulsation, large load capacity, stable flow, simple operation, safe and reliable, and easy to carry. Equipped with a miniature impact pre-collector, the respirable dust pre-collector can separate the respiratory dust and coarse powder dust that are harmful to the human body, and its separation efficiency conforms to the internationally recognized "BMRC" curve standard. It is especially suitable for use in underground coal mines and other workplaces containing explosive dangerous gases.
It is widely used in health monitoring and evaluation of disease prevention, environmental monitoring, labor protection, safety supervision, military, scientific research and teaching, mining, metallurgy, petrochemical, railway, building materials and other departments, especially suitable for underground coal mines and other dangerous gases containing explosions It can be used in the workplace environment, and can also be used in conjunction with related instruments. The instrument is driven by an imported low-energy-consumption micro-pump speed-regulating motor, which automatically keeps the flow constant. It has novel design, advanced technology, compact structure and stable performance. factory.

2. Product parameters

1. Flow range: 20-500 ml/min, 0.1-1 L/min, 0.1-1.5 L/min, 0.1-3 L/min (optional)
2. Sampling flow: L = 2 L /min (separation efficiency conforms to the internationally recognized "BMRC" curve standard)
3. Load capacity: 2.5 L/min [4.5 Kpa load]
4. Sampling range: dust, poison
5. Constant current accuracy: <±1.5%
6. Filter Diameter of membrane: Φ25 mm (TSP)
7. Flow meter accuracy: <2.5 class
8. Flow stability: <±5% within 30 minutes
9. Ambient atmospheric pressure: 80 KPa～110 Kpa
10. Sampling time error: no more than 1S within 5 minutes
11. Air tightness of sampling head: 1000 Pa pressure without air leakage
12. Display module: four-digit LCD liquid crystal display
13. Timing range: 99 h 59 min (single-chip intelligent control)
14. Timing error: ≤±0.1‰
15. Working status: intermittent or continuous work
16. Continuous time: >600 min
17. Working conditions: -20～45℃
18. Relative humidity: <85%
19. Storage temperature: -30℃～55℃
20. Working noise: <50 dB(A)
21. Working power: DC 6V/1.6An / Ni-MH
22. Charging current: 180 mA (standard type)
23. Dimensions: 128×88×45 (mm3)
24. Instrument mass: 0.5 kg (including battery pack)
25. Explosion-proof mark: Exia II CT4
26. Explosion-proof form: intrinsically safe

3. Product features

1. Intelligent digital display window type reading, menu setting, constant voltage and constant current, touch switch, with power, resistance, flow compensation and other functions.
2. Accurate measurement and timing, high precision, compact structure and stable performance. It can be used for fixed-point sampling or portable sampling.
3. Equipped with Φ25mm miniature pre-catcher to collect respirable dust in the air, which conforms to the internationally recognized "BMRC" curve standard.
4. It can be used with various air sample collectors, activated carbon sampling tubes, silica gel sampling tubes, gas collection bags and various solid detection tubes.
5. Intrinsically safe Exia II CT4, the battery pack is connected in series with 6 current limiting resistors of 0.51Ω/3W and potted with epoxy resin.
6. Imported explosion-proof and low-energy-consumption miniature motor, using three diodes in reverse parallel with the motor to form a protective element, which is both safe and reliable.
7. DC power supply, the built-in battery adopts a non-memory high-capacity battery pack, which can be replenished at any time when going out for sampling, undervoltage and charging prompts.
8. Note: It is strictly forbidden to disassemble the instrument and charge it in an explosive gas environment.