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ABRA Electronics :: Parallax :: Parallax Accessories :: DS2760 Thermocouple Kit

DS2760 Thermocouple Kit

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°C to +127°C (0.125°C resolution)
Low power consumption: Active current = 90 µA max, Sleep current: 2 µA 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.

The documentation and software is available in the Downloads area below.

Downloads:
DS2760 Thermocouple Kit Documentation (.pdf)
DS2760 Thermocouple Kit App Note (.pdf)
DS2760 Demo Source Code (.zip)
DS2760 Advanced Source Code (.zip)