Tenmars ST-502, Руководство пользователя

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10
Step 7. ABC Auto-correct function

Press the button to enter this item setting
operation.

Press the or button to select on/off.

Press the button to exit this item setting
operation.

Once the ABC function is turned on, it uses
400ppm as the standard and will have
adjusted approximately 30ppm over an
accumulated time of 180 hours; therefore it is
recommended to place it at a well-ventilated
place once the function is enabled.
5.7 Ventilation Formula

CFM/P(inch/minute/person)

CFM/P = 10600/(Cs-Co)

Cs = CO
2
read value, Co = CO
2
outdoor read
value.

L/P/S(liter/second/person)

L/P/S=(CFM/P)*28.32/60