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1  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 19, 2010, 08:18:55 am
Awesome, now i just need to find a tripler IC that doesn't cost me 15 bucks. smiley Any ideas?
2  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 18, 2010, 09:50:39 pm
Perhaps im blind, but i couldn't find the tripler circuit layout in the data sheet. Does anyone have an example? Ide be much happier to feed the ad595 15v to get the highest readable temp, but then that would leave me with 15v for the signal wire, which i have no idea how to reduce to 1/3rd voltage.
3  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 18, 2010, 03:51:07 pm
Do you remember where you bought it, id perfer not to order it through a  Chinese website, which is the only place i can find it.
4  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 18, 2010, 03:16:38 pm
was looking at this http://www.trcelectronics.com/Cosel/suw30515c.shtml
5  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 18, 2010, 02:55:08 pm
Mind sending me the layout? im assuming you multiply the value of the signal line x3?
6  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 18, 2010, 02:50:53 pm


so rA and rB should both be 10k?

from the divider calculators ive used, i thought I only needed 2 330ohm resistors.  

Then again, I am very new to this.
7  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 18, 2010, 02:10:33 pm
ill be ok with +/-3c accuracy, this leads me to my next question, does anyone have an example circuit that i can reference to build my divider? or is this a simple IC i can integrate?
8  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 18, 2010, 08:00:56 am
well i was talking about halving the voltage  on the signal wire from the ad595 with 10v running to it.  but now that i think about it, i dont think it would work for values under 500c.
9  Forum 2005-2010 (read only) / Interfacing / Re: Measure over 500c on 5v using an AD595 on: January 17, 2010, 06:43:46 pm
would it be simpler to build a 10v power supply for the ad595, then half the voltage on the signal wire, then multiply the value in the code by 2?
10  Forum 2005-2010 (read only) / Interfacing / Measure over 500c on 5v using an AD595 on: January 17, 2010, 04:39:36 pm
Im trying to setup a pyrometer /EGT for a diesel engine and have just discovered i can only measure up to 500C using 5v, when i realistically need to be around 1000c (need to see around 1800f). Im kinda at a blank at how to approach this. If anyone has a board layout with a parts listing to what I have to build to do this, i would greatly appreciate any help. BTW im going to be using a Type K thermocouple with a 1300c rating.
11  Forum 2005-2010 (read only) / Interfacing / Re: Diesel Truck Map Sensor. on: January 19, 2010, 04:34:24 pm
Hrrm, good idea, I like the intake temp and IC temp. that woudl let me know if its heat soaked and what im sucking in. Thanks
12  Forum 2005-2010 (read only) / Interfacing / Re: Diesel Truck Map Sensor. on: January 19, 2010, 08:08:02 am
I plan to drill a hole down the center of the drain bolts (just big enough for 3 wires) then take my sensor and feed it through the top then fill the hole with a high temp epoxy. What im still toying with is weather or not i should solder a small cap on the end of the bolt to cover the sensor. Then use a 3 conductor automotive pigtail to connect it.

I still havent decided what im gonna do with the last line, bar graph of, possibly an o2 reading? Throttle Position?
13  Forum 2005-2010 (read only) / Interfacing / Re: Diesel Truck Map Sensor. on: January 18, 2010, 09:37:20 pm

Its messy and for the time being, i only have place hold text for the EGT, im working it out right now. I plan to design a board to etch/get produced, and maybee possibly sell later to other diesel guys.
14  Forum 2005-2010 (read only) / Interfacing / Re: Diesel Truck Map Sensor. on: January 18, 2010, 07:17:16 am
Ill post pics later tonight when i get home from work. My last task is to read 1000c on 5v with an ad595, see my other post. THen my project should be close to done.
15  Forum 2005-2010 (read only) / Interfacing / Re: Diesel Truck Map Sensor. on: January 15, 2010, 11:46:08 pm
bircoe - Thanks alot for the help, I just gave it a shot in truck, and my values are spot on now. Thanks alot for all your help, if you pm me your paypal addy, ill send ya a couple bones for a 6 pack. smiley-wink

I do have one last quesion though, as my goal here is to learn how to devlop theese tools on my own. Would you mind explaing to me how you determined what values to pass in the map function based on the spec sheet I linked earlyer in the post.
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