ค่ามาตรฐานของก๊าซคาร์บอนมอนนอกไซด์ ในบรรยากาศของการทำงาน ควรมีค่าไม่เกิน 50 ppm
อ้างอิงจาก ประกาศกระทรวงมหาดไทย เรื่อง ความปลอดภัยในการทำงานเกี่ยวกับสภาวะแวดล้อม http://www.oshthai.org/cmslite/download/pdf/3environchem.pdf
ที่มาข้อมูล : http://oshthai.labour.go.th/legisra_labour.aspx
AZ 7701 CO meter was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.
CO range | 0~999 ppm |
Resolution | 1 ppm |
Accuracy
(at 20+5 C, 50+20%RH)
|
±20% at 0~100ppm;
±15% at 100~500ppm
Others range are not specified
|
Response time | within 60 seconds |
LCD size (mm, HxW) | 11x26 |
Operating condition | 0~50°C , 5~95% RH (avoid condensation) |
Storage condition | -20~ 50°C,0~95%RH(avoid condensation) |
Power supply | 3pcs. AAA batteries |
Meter size ( LxWxH ) | 175mm x 47mm x 28mm |
Weight | 120g |
ppm | Symptoms and applicable standard | ppm | Symptoms and applicable standard | |
0-1
|
Normal background levels
|
|
100
|
Remove employees from enclosed
space if the CO concentration exceeds 100ppm per OSHA exposure limit |
9
|
Maximum indoor air quality level:
Maximum allowable concentration per ASHRAE Residential standards 62-1989 for living area. |
|
200
|
Mild headache, fatigue, nausea and
dizziness w/i 2-3 hrs. |
25
|
Maximum limit 8 hrs of continuous
exposure per California OSHA workplace standards. |
|
400
|
Frontal headache, life threatening
after 3hrs. Maximum concentration in flue gas per the US EPA and AGA standards. |
35
|
Maximum 8 hrs average exposure
level per US OSHA workplace standards. |
|
800
|
Dizziness, nausea, convulsions, death
w/i 2-3 hrs. |
50
|
Maximum concentration for continuous
exposure in any 8 hrs average level per OSHA standards. |
|
1600
|
Nausea w/i 20 min.,death w/i 2-3 hrs
|
Applications:
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