Derating Of The Display Brightness; Surface Resistance - B&R Power Panel T80 User Manual

Device description

4.3.5 Derating of the display brightness

Display brightness of 15.6" variants
Operating the display at the maximum ambient temperature and maximum display brightness results in impairments
in the display. The following derating of the display brightness must therefore be observed:
T [°C]
10
9
8
7
6
5
4
3
2
1
0
0
DB [%] Display brightness (DB) in percent
Information:
The display brightness can be derated in two ways:
1) Reducing the display brightness according to the max. ambient temperature.
2) Observing the maximum permissible ambient temperature for the selected display brightness.
In addition to this derating, a further derating must be observed depending on the installation condi-
tions (see "Derating the ambient temperature" on page

4.3.6 Surface resistance

Chemical resistance of the front glass per ASTM D 1308-02 and ASTM F 1598-95 for an exposure time of 24
hours without visible changes:
•
Acetone
•
Alkaline cleaning agents
•
Ammonia 5%
• Gasoline (unleaded)
• Beer
• Brake fluid
• Chlorine-alkaline cleaning and disin-
fecting agents (pH value min. 11) 1.5%
•
Hydrogen chloride 6%
•
Coca-Cola
• Diesel
• Diesel oil
• Dimethylbenzene
16
10 20 30 40
Diagram legend
•
Vinegar
•
Ethanol
•
Grease
• Ammonia-based glass cleaners
• Sidolin glass cleaner
• Graphite
• Hydraulic fluid (Skydrol)
• Isopropanol
•
Coffee
•
Ink
•
Lysol
• Methylbenzene
• Methyl ethyl ketone
50 60 70 80
T [°C] Derating in °C
15).
•
•
•
•
•
•
•
•
•
•
•
•
•
90 100 DB [%]
Naphtha
Caustic soda 5%
Nitric acid 70%
Hydrochloric acid 5%
Lubricants
Sulphuric acid 40%
Suntan oil and UV radiation
Cooking oil
Stamping ink
Tea
Turpentine
Turpentine oil replacement (thinner)
Trichloroethylene
Power Panel T80 User's manual V1.03