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 05, 2020