The mercury type and the organic usually red liquid type.
Temperature measuring devices for food.
Once you insert a food thermometer you can measure the internal temperature of the food.
Traditional contact thermometers are increasingly being replaced in the food industry by non contact infrared temperature sensors pyrometers which offer an instantaneous response time the ability to measure moving objects and because there is no need to touch the measured object improved hygiene.
While indirect ir thermometry can measure the external temperature of meats in an oven or roaster determining the internal temperature of the meat is another story.
Generally speaking they come in two main classifications.
Thermometers are well known liquid expansion devices also used for temperature measurement.
This device can measure temperature from 80 o c to 600 o c.
The main advantage of this device is it does not use any power source for their operation.
Place 2 2 deep in thickest part of food can be used in roasts casseroles and soups temperature is averaged along probe from tip to 2 3 up the stem cannot measure thin foods unless inserted sideways.
So that we can easily use it to measure high temperatures.
A bimetal bayonet style thermometer with a dial face scale with a range of 18 to 105 c 0 to 220 f may be used for certain applications in food temperature measurement.
But these are not so accurate like electrical devices such as thermocouple.
This is especially important for big dishes like a whole turkey or chicken when you want to be sure that the heat of the oven has cooked all the way to the centre of the food.
The dial face should be a minimum of about 1 inch in diameter and is usually available in larger sizes.
The scale must be in 1 c increments.
Check the temperature of thin foods like hamburgers.