| |
OVERLAY |
| |
Accuracy |
Responsiveness |
Impact
Resistance
|
Wear
Resistance |
Gloves |
Dusty
Environments
|
Washdown
Environments
|
Hazardous
Areas
|
Polyester
Overlay/Glass |
Lexan |
Glass |
| Resistive |
Best |
Best |
Good |
Good |
Best |
Best |
Better |
Class
1
Div 2
|
• |
|
|
| Infrared |
Good |
Better |
Best |
Better |
Best |
Poor |
Good |
Class
1
Div 1&2
|
|
• |
|
| SAW |
Good |
Good |
Good |
Best |
Better |
Good |
Poor |
Class
1
Div 2 |
|
|
• |
Projected
Capacitive |
Good |
Good |
Better |
Better |
Good |
Better |
Best |
Class
1
Div 1&2
|
• |
|
|
Hazardous Area Notes:
All touchscreens are Class I Div 2 non-incendive UL certified when used with
Strongarm 17" & 19" displays. (21.3" & 22" WS
certification pending.)
Projected
Capacitive is considered safest for Div 1 or purge (with Infrared as an
acceptable alternative), without barrier or isolator.
|