INSTOCK-GSOS

Hoods and Enclosures Powder Weighing Balance Enclosure

• Room air is drawn in across the front of the cabi- net with an average velocity of 100 fpm (0.5 m/s) • Air is drawn up through the cabinet's work zone and forced through the HEPA filter (>99.99% typi- cal efficiency for 0.3 micron sized particles) • The state-of-the-art baffle system ensures airflow uniformity throughout the cabinets main chamber • The HEPA filtered air then returns to the labora- tory stripped of all airborne contaminants or is vented through the optional exhaust collar to exhaust ducting for enhanced safety.

Blower Exhaust HEPA Filter

ULPA-filtered air Unfiltered/potentially contaminated air Room air/Inflow air

Nominal Size Part Number

3' (0.9 m) PW1-3A2

4' (1.2 m) PW1-4A2

33.1" x 27.6" x 44.3" (840 x 700 x 1125 mm) 32.3" x 25.6" x 32.6" (820 x 650 x 829 mm)

44.9" x 27.6" x 44.3" (1140 x 700 x 1125 mm) 44.1" x 25.6" x 33.4" (1120 x 650 x 848 mm)

External Dimensions (W x D x H) Internal Work Area Dimensions (W x D x H)

Standard Filtra- tion Elements

HEPA filter, typical efficiency of >99.99% at 0.3 microns, removes particles and aerosols

Main Filter

Control System Inflow Air Velocity Sound Emission

Sentinel TM Silver Microprocessor Controller Initial set point: average of 100 fpm (0.5 m/s)

<55 dBA at initial blower speed setting measured at typical operator work position 0.05" (1.2 mm) 18 gauge electro-galvanized steel with white oven-baked epoxy- polyester Isocide TM antimicrobial powder coated finish

Main Body

Back Wall Front Window

Cabinet Construction

0.2" (6 mm) Acrylic

Side Walls Work Top

Phenolic Resin

Sloped Front

13°

Sash Specification

Sash Type

Hinged

Net Weight

242.5 lbs (110 kg)

352.7 lbs (160 kg)

1

6

1. Blower 2. Electrical Panel 3. HEPA filter 4. Service fixture hole cover 5. Phenolic work top 6. Sensor box 7. Fluorescent light 8. Sentinel microprocessor control 9. Hinged access at 2 points for enclo- sure loading 10. Arm ports for access to balance or equipment

3 2

8

AirFlow 0.3m/s

ESCO

7

9

9

44.3” (112.5 cm)

4

10

10

5

25.6” (65 cm) 35.4” (70 cm)

33.1”/44.9” (84cm/114cm)

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