Bacharach Comfort Chek 400 Especificações descarregar pdf (Página 19)

Comfort Chek



400 Operation Manual

1509-9000 Rev 4 13

6. CO

LEVELS AND GUIDELINES

The following are excerpts from ANSI/ASHRAE addendum standard 62.1 – 2004.

Refer to section 1.4 for general CO

guidelines.

6.1. Enforceable and/or Regulatory Levels

• OSHA: 5000 ppm (The Occupational Safety and Health Administration)

• MAK: 5000 ppm or 10,000 ppm (1 hour) (German Institution)

6.2. Non-Enforced Guidelines and Reference Levels

• Canadian: 3500 ppm (long term)

• NIOSH: 5000 ppm or 30,000 ppm (15 minutes) (The US National Institutes of

Health)

• ACGIH: 5000 ppm or 30,000 ppm (15 minutes) (The American Conference of

Governmental Industrial Hygienists)

7. NOTES

• TWA (Time Weighted Average) value represents the average carbon dioxide

level exposure during 8 hours (working day).

• STEL (Short Term Exposure Limit) value shows the last 15 minutes’ CO

• ASHRAE: Standard 62-1989, Sec.6.1.3: Comfort (odor) criteria are likely to be

satisfied if the ventilation rate is set so that 1000 ppm of CO

is not exceeded.

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