Anyone need a K Type EGT PCB?

[Nate1647545505]

I did a proto run (3 boards) of a dual AD595 EGT PCB.

 

Can use ungrounded/grounded K Type thermocouple, reads from 0-2012 F

 

0V=32F,5V=2012F

 

Part List (For one complete EGT Circuit) from Digikey: ~20$

AD595AQ-ND

CMF10.0KQFCT-ND

P12.0KCACT-ND

1N4733ADICT-ND

P818-ND

P820-ND

ED1601-ND

 

You can get an NPT Pipe Plug Ungrounded K Type Thermocouple for about 40$, from Omega. Weldable stainless steel or steel NPT threaded bungs from McMaster Carr are about 2$. The project should cost less then 75$ completed.

 

http://img29.imageshack.us/img29/3895/pcbimg.png

 

2 Layer Board, 3.8x2.5", won't have solder mask or silk screen layer (yellow). Red = Top layer, Green = bottom layer.

Edited May 29, 2009 by Nate
img not working?

[Nate1647545505]

Link to K type TC @ Omega

http://www.omega.com/ppt/pptsc.asp?ref=TC-NPT&Nav=tema09

[Nate1647545505]

SS NPT Bungs (Half Couplings): http://www.mcmaster.com/#stainless-steel-pipe-fittings-and-pipe/=235kbj

[Nate1647545505]

Also, just for completeness:

 

EGT in Deg F = (Volts/.002525) + 32

 

or

 

EGT in Deg F = (Volts * 396) + 32

[Guest Removed]

cool!