Hello
We are working on a circuit that will monitor certain parameters in an industrial setting at ambient temperature and humidity. We need to display multiple kinds of information. We are considering using a 2.4" TFT display. We plan to mount the TDT display on the PCB and house this PCB with TFT inside a ABS box with clear polycarbonate lid. The ABS box shall then be screwed on the wall (indoors) in the industrial warehouse. Is this a workable option? What issues can we expect with the 2.4" TFT display used thus?
1 Like
Hi,
If you are using the touch facility of the screen in an industrial application, then I would use an industrial TFT display.
Touch screens in most hobby displays will not take to lightly to a humid, possibly dirty environment. and heavy handed repeated treatment of industry.
Believe me, even in "clean" environments you still get debris getting in, just its a lot finer.
If you are not using the touch facility, then proper sealing from the environment might work, just have a spare display on hand.
Tom.. 
3 Likes
Double check your worse case temperatures to be sure the display and electronics ratings are not exceeded. Also be sure you use clean power.
I would prefer a NEMA 12 metal enclosure with a window for the display, but that is not required.
1 Like
Ambient just means "what conditions are currently about". It does not specify anything. So what are the temperature and humidity ranges that can be ambient in your factory?
Ambient Temperature : +2C to +47C
Ambient Humidity : 25% to 95%
Must environmental conditions such as shock and vibration also be taken into account?
Thank you. This is helpful information. Especially the recommendation for a NEAM12 rated enclosure. Why do you specify metal though?
No. Shock and Vibration are not a concern, as this is a warehouse.
o-o-o... ambient? 
I like the NEMA 12 because it is good for most but not all industrial locations, it is dust tight and when properly grounded also helps to shield the electronics from EMI coming in or out. In any case it appears you are checking that out.
You stated it is an "industrial setting", that can be a plastic plant, a foundry, no clue so I just suggest what it is rated for that general environment. Inside/outside I do not know as nothing was specified.
Since it is a wall generally vibration is not a big problem but again you know better then I. Also you are doing a PCB which is a great move on your part as it will be a lot more rugged.
The only problem I see with the display is readability, the print will be small. They also make industrial buttons etc for NEMA 12 enclosures that will keep the integrity of the enclosure. If you use them unless rated for dry contacts keep at least 1 mA through the contacts when making or breaking, this will help keep them 'clean'.
Spelling correctors are great and a pain all at one time. Sometimes it takes 10 to 15 seconds to find a problem, other times immediately, From this I am assuming the corrections are done on the Arduino end, and not my resident spelling checker. Thanks for the catch. They could put 1600 uA through the contact that would be good as well:-)
1 Like
Is this a typo?
One mile is the same as 1609 meters!
1 Like
This topic was automatically closed 180 days after the last reply. New replies are no longer allowed.