Thermo Scientific 1500 A2 Series Operating Manual page 77

Section 8
Certification Testing
Testing Information
(continued)
8-4 1500 Series A2
Inflow Area:
• 4ft Models (10" window opening work position) 1584,1574: Front
opening 3.28 sq ft
• 6ft Models (10" window opening work position) 1589,1579: Front
opening 4.92 sq ft
Calculation:
• Inflow Velocity (V1) = Inflow Air Volume (V2)/Actual Inflow Area (A2)
Acceptance:
• 100 – 110 FPM
Inflow Velocity – Constricted Window Method (Secondary)
Description:
• Inflow velocity measured at several points through a constricted window.
Equipment:
• Thermal Anemometer, or equivalent (hotwire)
• Anemometer Probe Holder, part number 1911325
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