Specifications include, but are not limited to: (a) Must be the most current Firmware Version (b) Must have the following Flow Range(s): • Constant flow 20 - 5,000 cc/min. without external adaptors • Constant pressure 1 - 5,000 cc/min without external adaptors (c) Must have constant Flow modes or High and Low Flow Constant Pressure (d) Must have the following Flow modes accuracy: • Flow Display ± 5% or 3 cc/min of set flow, whichever is larger • Constant Flow Control ± 5% or 3 cc/min of set flow, whichever is larger • Constant Pressure Control ± 10% of back-pressure (e) Must have the following Back Pressure Capability: • (8-hour runtime) 5000 cc/min. up to 12” H20 back pressure • 4000 cc/min. up to 20” H20 back pressure • 3000 cc/min. up to 30” H20 back pressure • 2000 cc/min. up to 30” H20 back pressure • 1000 cc/min. up to 35” H20 back pressure • 450 - 1000 cc/min. up to 40” H20 back pressure • 20 - 449 cc/min. up to 40” H20 back pressure (f) Must have an eight-hour minimum run time (g) Must have the following Flow Fault specifications: • If flow changes exceed 5% within back pressure specifications, fault notification appears. • If fault exceeds 30 seconds, pump shuts down. • Selectable automatic fault recovery which allows the pump to attempt restart every 3 minutes for up to 10 times or to hold until manual intervention. (h) Must run within the following temperature ranges: • Operating: 32°F to 113°F (0°C to 45°C) • Storage: -4°F to 113°F (-20°C to 45°C) • Charging: 41°F to 104°F (5°C to 40°C) (i) Must have the following Humidity ranges • Operating 5-95 %RH, non-condensing • Storage 5-98 %RH, non-condensing (j) Must display Flow rate, sample time, and sample volume in actual conditions (k) Must have Indicators with different colored LED’s to indicate when the unit is charging and when it is charged. (l) Dimensions per unit must be similar to 4.3 x 2.4 x 2.4 inches (10.9 x 6.1 x 6.1 centimeters) (m) Weight per unit must be similar to 20.5 ounce (581 grams) (n) Must have Motion Detection with the capability to detect and measure up to 3 levels of activity (active, stationary, inactive) of each worker, ensuring sample integrity