ACD CAL-101 Manuale di istruzioni - Pagina 11

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VI. CORRECTIONS TO VOLUMETRIC FLOW

Changes in altitude and temperature can cause changes in air density,

thus affecting the output of the CAL-101. The output of the CAL-101 was

calibrated to STP (standard temperature and pressure) of sea level and

20°C. To compensate for differences in altitude or temperature from STP,

the following tables should be utilized:

Note: Altitude and Temperature are cumulative, i.e., you must correct

for both factors to obtain the most accurate calibration.

Altitude Correction Table

Altitude

1000

2000

3000

4000

5000

6000

Example:

At 3200 feet with a temperature of 29°C. The corrected volumetric flow

rate is

.5 LPM x 1.116 x 1.034 = .577 LPM (volumetric)

Corrected Out-

put (multiply by)

1.000

1.038

1.076

1.116

1.158

1.202

1.248

Temperature Correction Table

Temperature

Corrected (multiply by)

(°C)

-30

-20

-10

Page 9

0.829

0.863

0.898

0.932

0.966

1.000

1.034

1.068

1.102