How is CO (carbon monoxide) rate calculated for TARPS?

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Multiple Choice

How is CO (carbon monoxide) rate calculated for TARPS?

Explanation:
The rate of CO in TARPS is found by combining how much CO is in the air with how much air is moving, and then converting that to a volume per unit time. Specifically, you multiply the CO concentration in parts per million by the ventilation flow in cubic metres per second, and then convert to litres per minute. The correct conversion factor is 0.06, because: - 1 m3 of air = 1000 L - 1 minute = 60 seconds - 1 ppm means 1 part per 1,000,000, so you divide by 1,000,000 So CO rate (L/min) = CO ppm × Vent (m3/s) × (1000 × 60) / 1,000,000 = CO ppm × Vent (m3/s) × 0.06. The other numerical factors don’t match this unit conversion, so they give incorrect rates.

The rate of CO in TARPS is found by combining how much CO is in the air with how much air is moving, and then converting that to a volume per unit time. Specifically, you multiply the CO concentration in parts per million by the ventilation flow in cubic metres per second, and then convert to litres per minute. The correct conversion factor is 0.06, because:

  • 1 m3 of air = 1000 L

  • 1 minute = 60 seconds

  • 1 ppm means 1 part per 1,000,000, so you divide by 1,000,000

So CO rate (L/min) = CO ppm × Vent (m3/s) × (1000 × 60) / 1,000,000 = CO ppm × Vent (m3/s) × 0.06.

The other numerical factors don’t match this unit conversion, so they give incorrect rates.

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