DS1920

The DS1920 is a 1-Wire Network temperature sensor which supports a wide temperature range and good accuracy. For my purposes, I have limited the resolution to 0.5°C. I have also used the upper and lower alarms to generate alarms when the programmed temperature levels are breached. It is the new version of the DS1820.

Notes

Powering the sensors (if they are not the P variant) and not using parasitic power makes the device measurements more reliable and also means you can perform the temperature reading faster (if the software supports it). This can be important if the 1-wire bus is also used for other things, as you want to tie up the bus for the shortest possible time.

Reference

• Data sheet (PDF).
• TemperatureContainer class documentation