Dell FM120x4 owner manual Battery, Environmental Expanded operating temperature, Temperature

Battery

System battery CR 2477N 3.0 V Lithium coin cell

Environmental

NOTE: For additional information about environmental measurements for specific system configurations, see dell.com/environmental_datasheets.

Expanded operating temperature

NOTE: When operating in the expanded temperature range, system performance may be impacted.

NOTE: When operating in the expanded temperature range, ambient temperature warnings may be reported in the System Event Log.

≤ 10% of annual operating hours	5 °C to 10 °C (41 °F to 50 °F), and 35 °C to 40 °C (95 °F to
	104 °F) at 5% to 85% RH with 29 °C (84.2 °F) dew point.
	NOTE: Outside the standard operating temperature
	(10 °C to 35 °C), the system can operate down to 5
	°C or up to 40 °C for a maximum of 10% of its annual
	operating hours.
	For temperatures between 35 °C and 40 °C, de-rate
	maximum allowable dry bulb temperature by 1 °C per 175
	m above 950 m (1 °F per 319 ft).
≤ 1% of annual operating hours	–5 °C to 5 °C (23 °F to 41 °F), and 40 °C to 45 °C (104 °F to
	113 °F) at 5% to 90% RH with 29 °C (84.2 °F) dew point.

Expanded operating temperature restrictions

Temperature

Maximum Temperature Gradient (Operating and Storage)

Storage Temperature Limits

Temperature (Continuous Operation)

Temperature Ranges (for altitude less than 950 m or 3117 ft)

Humidity Percentage Range

Relative Humidity

NOTE: Outside the standard operating temperature (10 °C to 35 °C), the system can operate down to –5 °C or up to 45 °C for a maximum of 1% of its annual operating hours.

For temperatures between 40 °C and 45 °C, de-rate maximum allowable dry bulb temperature by 1 °C per 125 m above 950 m (1 °F per 228 ft).

Do not perform a cold startup below 5 °C.

20 °C/h (36 °F/h)

–40 °C to 65 °C (–40 °F to 149 °F)

10 °C to 40 °C (50 °F to 104 °F) with no direct sunlight on the equipment.

10% to 80% Relative Humidity with 29 °C (84.2 °F) maximum dew point.

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