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Description:
Thermocouples provide a low-cost, reliable means of measuring temperature over a wide range. The challenge when using a thermocouple is accurately measuring the very low Seebeck output voltage (fractional to low millivolts) from the element, and providing for cold junction temperature compensation.
The Dallas/Maxim DS2760 High Precision Li+ Battery Monitor is very easily configured into an effective thermocouple interface. The Parallax DS2760 Thermocouple Module capitalizes on this application and provides a complete connection between the BASIC Stamp microcontroller and a standard thermocouple element. The DS2760 Thermocouple has the following features:
- 1-Wire interface allows multiple devices with just one BASIC Stamp I/O pin
- Cold Junction measurement: 0¡ãC to +127¡ãC (0.125¡ãC resolution)
- Low power consumption: Active current = 90 ¦ÌA max, Sleep current: 2 ¦ÌA max
In addition to the module (shown above at left), the kit includes 3 Thermocouple elements. They are as follows:
K-type (Chromel / Alumel) Range: 32 F to 1873 F (0 to 1023 C)
J-type (Iron / Constantan) Range: 32 F to 1873 F (0 to 1023 C)
T-type (Copper / Constantan) Range: 32 F to 752 F (0 to 400 C)
This product is ideally suited to work with a BASIC Stamp 2p module ( BS2P24 , BS2P40 , BS2PE ). Other BASIC Stamp modules will require a Serial-to-1-Wire protocol converter, as well as code to manage the large tables across program slots thus we recommend the BS2p series.
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