Environmental Specifications; Ambient Temperature; Temperature Gradient; Humidity - Seagate ST92011A - Momentus 20 GB Hard Drive Product Manual

2.10

Environmental specifications

2.10.1

Ambient temperature

Ambient temperature is defined as the temperature of the environment immediately surrounding the drive.
Actual drive case temperature should not exceed 60°C (140°F) within the operating ambient conditions.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.
Operating 5° to 55°C (41° to 131°F)
Nonoperating –40° to 65°C (–40° to 149°F)
2.10.2

Temperature gradient

Operating 20°C per hour (68°F per hour max), without condensation
Nonoperating 30°C per hour (86°F per hour max)
2.10.3

Humidity

2.10.3.1 Relative humidity
Operating 5% to 90% noncondensing (30% per hour max)
Nonoperating 5% to 95% noncondensing (30% per hour max)
2.10.3.2 Wet bulb temperature
Operating 33°C (91.4°F max)
Nonoperating 40°C (104°F max)
2.10.4

Altitude

Operating –198.12 m to 3,048 m (–650 ft to 10,000+ ft)
Nonoperating –304.8 to 12,192 m (–1,000 ft to 40,000+ ft)
Momentus 5400.1 Product Manual, Rev. F 11