7.2. Environmental Specifications¶
Appliance environmental specifications are listed in the following tables.
Store temperature | -40°C to 85°C (-40°F to 185°F) |
Store temperature gradient | 20°C (68°F) per hour |
Operating temperature | 10°C to 35°C (50°F to -95°F) |
Operating temperature gradient | 20°C (68°F) per hour |
Relative humidity percentage range for storage | 10% ~ 95% (non-condensing) |
Relative humidity percentage range for operating | 10% ~ 85% (non-condensing) |
Vibration for storage | 1.87 Grms (10-500 Hz) |
Vibration for operating | 0.26 Grms (5-350 Hz) |
Shock for storage | 65G for 2ms |
Shock for operating | 5G |
Altitude for storage | 12,000m (39,370 ft) |
Altitude for operating | 3,048m (10,000 ft) |
7.2.1. Air Quality Requirements¶
The air must be free of:
- Corrosive dust and/or corrosive contaminants;
- Conductive dust or conductive particles (such as zinc whiskers).
Airborne residual dust must have a deliquescent point* less than 60% relative humidity. (*The relative humidity at which crystalline materials begin adsorbing large quantities of water from the atmosphere.)
Gaseous corrosion level in terms of (in Angstrom) as per ISA:
- Copper reactivity rate must be less than 300 Å/month, class G1(ANSI/ISA71.04-1985).
- Silver reactivity rate must be less than 200 Å/month (AHSRAE TC9.9).
Mar 21, 2019