What temperatur-sensor would you use for a heatbed and an extruder?

What temperatur-sensor would you use for a heatbed and an extruder?
As all digital sensors I know aren’t suitable for those temperatures, it’s the first time I need to get an analog one :wink:

Thermistor or thermocouple.

Any suggestions? As the printtemperature might be near to 300°C those I found on ebay which are suitable for 150°C arn’t appropiate :frowning:

Have you looked into IR temperature readers? Since they make no direct contact, they can be used for higher temperatures.

Hmmm…couldn’t find any suitable ir-reader. But i found ebay-item 290337098394. Those analog PT 100 seem to work for the whole temperature range. I hope it’ll be accurate enough.

Epcos 100K bead thermistor. Standard issue in most hot ends and heat beds. the thermistor tables for these are well understood and they are cheap. http://www.aliexpress.com/item/Free-shipping-20pcs-New-100K-ohm-NTC-Thermistor-for-3D-Printer-Reprap/1050411103.html