High/Low Temp LED Display

? You mean just the display to connect to your chamber's thermocouple? Or the whole thermocouple / display thing? If it's the former, your temp cycle manufacturer should have something. If it's the later, get a meter from Fluke, or someone similar.

As an addendum to bhankiii, you might also check out Omega Engineering (omega.com). Good source for everything you need from the t/cs outward.

My company builds custom temp cycling chambers and thermal platforms. We build our own proprietary display units but also incorporate OEM controllers from outside vendors.

I am not sure if you want a complete controller but if you do here is one source we use : http://www.love-controls.com/index.htm .

These units work with RTD's and thermocouples and have DC voltage & current I/O. There are models with TTL I/O as well.

They are reasonably priced, versatile and reliable.

I see that I was not understand clearly, tho thanks for the feedback.

The LED's will be in the chamber on a test jug, the tech from time to time will be viewing through the glass on the door for error codes these LED will display about equip also in chamber. This has to be this way, and the setup that was in use is having problems with these double stack 8 digit Display going bad now. I was looking for a better replacement for temp range -40degC to +80degC

Thanks

e-mail
hshipley@wabtec.com

If you are just looking for the displays themselves, I would recommend Avago Technologies...http://www.avagotech.com/products/parametric-search.jsp?navId=H0,C1,C5231,C4941,C4963,C5094,C5148

The displays are rated to 85C, but will work well up to 105C. The higher temps just accelerate the deterioration of intensity over time.

thanks, I can derate the forward current for above max temp, that should increase the life

HOW TO MAKE LED SCREEN THAT IS LOW TEMP. ?

AND WHT IS THE TEMP. ?

THIS IS IMPORTANT TO ME

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www.elecosn-led-display-screen.com

JUST GO FOR A DTC METER FROM SELECTRON MAKE .. U HAVE A ON OFF RELAY CIRUIT TO CONTROL UR WHOLE FUNCTION.