Subject	For ZEM owners, or those interested in data acquisition >>
Posted by	Ash's Z on November 04, 2005 at 2:23 PM
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Message	I came across this device last night while searching for signal conditioners to use with the thermocouples installed into Dee's car. We are using "K-Type" thermocouples and Honeywell self-amplified pressure sensors for use in collecting data on turbocharger efficiency as well as intercooler efficiency. The K-type thermocouple has a very small and narrow signal output of 4mV to 40mV based on the temperature of the probe tip. This is too small of a signal voltage to really get a good analog to digital conversion with any degree of resolution. A signal conditioner is a device that amplifies the output of such devices (thermocouples, strain gauges, pressure sensors, etc etc) so that the signal output is much higher in voltage and covers a wider band. I found this little guy last night in my search and ordered one of them to use in our testing tomorrow on the dyno. TWO PROGRAMMABLE AMPLIFIERS SELECTABLE GAINS OF 1,10,100,1000 ONLY ONE 5 VOLT 100 MA SUPPLY REQUIRED HIGH IMPEDANCE DIFFERENTIAL INPUTS OUTPUTS GREATER THAN +/- 10 VOLTS EXCITATION OUTPUT OF 4.096 VOLTS +/- 15 VOLT POWER SUPPLY OUTPUTS USES BURR BROWN/TI PGA 204 AMPLIFIERS TTL COMPATIBLE GAIN SELECTS COMPATIBLE WITH LABJACK FOR CONTROL USED TO AMPLIFY AND CONDITION SIGNAL FOR DATA ACQUISITION PURPOSES APPLICATIONS INCLUDE THERMOCOUPLE, STRAIN GAUGE, AND MICROPHONE AMPLIFIERS LOW COST OF $99 I spent an hour on the phone yesterday calling various companies that sell signal conditioners, and most of them wanted from $150-$300 per unit and they were only single channel devices. Considering this guy is only $99, I think it is one heck of a deal. Check it out at: [ http://www.designcircuit.com/ ] [ ashspecz.com ] [ agpowers@bellsouth.net ] Enthusiasts soon understand each other. --W. Irving. Are you an enthusiast? If you are out to describe the truth, leave elegance to the tailor. Albert Einstein
Follow Ups	For ZEM owners, or those interested in data acquisition >> - Ash's Z 14:23:27 11/04/05 very cool - PennStateZ 14:26:06 11/04/05 Good find! (n/m) - Kenny 14:33:04 11/04/05 Fantastic Find!!!! - Do You Z 15:18:53 11/04/05 Great find!... - bobZtwin (NC) 15:30:10 11/04/05 Yeah, I think I will need to spend some time on the bench - Ash's Z 16:15:08 11/04/05 damn, now I have to spend more money:) (n/m) - mpbond(STL) 15:40:23 11/04/05 Re: For ZEM owners, or those interested in data acquisition >> - Belial 16:24:43 11/04/05
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