One of the best of our favorite resources on the Web is a software company on Manchester, England, Windmill Software. They have supplied free PC software for Test & Measurement to all who wish to download it from their website: http://www.windmill.co.uk,
Windmill has for many years also published a free monthly informative eNewsletter called Monitor newsletter (ISSN 1472-0221); archive and subscription available online at http://www.windmill.co.uk/newsletter.html.
At last look it was up to issue No, 224!
Here’s links to one of the extra specials they have done on the subject of temperature measurement
- Measuring Temperature with a Computer
- Comparison of Thermocouples and RTDs
- Thermocouples – Rugged, Versatile and Low Cost
- RTDs, PRTs, thermistors, Pt100 – Accurate and Stable
- Hardware and Software to Measure Temperature
Measuring Temperature with a Computer
Temperature measurement is the most common application of data acquisition systems. You will need a device to measure the temperature – a temperature sensor. Thermocouples, resistance temperature devices (RTDs), thermistors, platinum resistance thermometers and infrared thermometers are all types of temperature sensor.
The most popular are thermocouples and RTDs. The sensors you choose depends on several things, such as as your expected maximum and minimum temperatures, cost, accuracy needed and your environmental conditions.
To get data from the temperature sensor into your PC you need a data acquisition interface with suitable software. The interface unit plugs into your computer, for example into the USB or Ethernet port.
You wire the sensor to the interface, install the software and the computer can now monitor temperatures.