14 Appendix A
Power Requirements:
Four AA-size batteries (included) or AC adapter (optional) 9 VDC, 300 mA,
4-18 watts (input voltage and frequency vary depending on which adapter is
used)
1
Overpressure range = 7 psi (190 in. H
2
O, 360 mmHg, 48 kPa).
2
Pressure velocity measurements are not recommended below 1,000 ft/min (5 m/s) and are best
suited to velocities over 2000 ft/min. Range can vary depending on barometric pressure.
3
Accuracy is a function of converting pressure to velocity. Conversion accuracy improves when
actual pressure values increase.
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