Type of heat sensor used in a digital clinical thermometer

[howly]

Is it RTD,p-n junction detectors,thermistors or maybe something else?

Pls help :'(

Absolutely clueless.

 

[MP1]

The answer to this question is determinate on the accuracy of the device. All of the devices you have listed are used in one lab device or another. For best accuracy, many will use a platinum probe (RTD). Many devices will use a thermocouple. More expensive thermistors can give you +/-1 deg C accuracy or better. So, it really depends upon the accuracy requirement.

MP

 

[ZomBiE]

In medical type devices is oftenly used military-grade components too, ask your local component distributor. Here in Finland is quite easy to get military components. most semiconductor types would be more precise.

 

[MP1]

In a search, I found medical clinical digital thermometers with accuracy ranges from 0.1 deg C to 1 deg C. You can pretty much choose how accurate you want it to be, then spend accordingly for the parts.

MP