low cost methods to measure temperture and pressure

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coolhand21

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Hi I'm exploring methods to measure temperature and pressure, My temperature range is between 40- 180 degrees f and and my pressure range is between -10 to 30 psi.

What low cost methods are available?

cool
 

Arduino ,LM355,LCD16x2 and some digital pressure sensor...In the library in the Arduino IDE code for LCD is present.The same is for pressure.
 
There are a lots of inexpensive ($1 and less) temperature sensors. LM35, LM75, thermistors

As for pressure sensors, search these manufacturers:
* Honeywell </title> <meta name="robot" content="Index, NoFollow"> <link rel="StyleSheet" HREF="http://sensing.honeywell.com/prism_asset/html_stylesheet/html_stylesheet314188.css" type="text/css" /> <meta name="generator" content="PRISMtm 5.5 - Web Impact Inc. /
* Freescale Pressure Sensors
* Omega Engineering Sensors, Thermocouple, PLC, Operator Interface, Data Acquisition, RTD (not really low cost, though)

Also search the electronic component distributors:
* DigiKey Pressure | Digi-Key (lots of pressure sensors)
* Mouser Capteurs de force / pression
* Jameco http://www.jameco.com

BTW, check out this yahoo group dedicated to sensors: **broken link removed**
 

temperature is fairly easy to measure: a diode is sufficient.

pressure is a little bit tougher. you can probably measure the capacitance of a diagram, or use stress sensor for that.
 

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