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No, the white should be approximately zero and the black approximately 110-120, assuming the "bare ground" refers to a bare conductor attached to electrical ground.
You should replace a digital thermometer when it becomes inaccurate. You should also replace it when it is damaged or cracked.
fordetermining point of ice,the thermometer should be kept
For a single thermometer, placement should be in a central location.
Under NOAA standards, temperature should be measured 4 to 6 feet (1.2192 to 1.8288 meters) off the ground. Under the World Meteorological Organization standards, temperature should be measured 1.25 to 2 meters (4' 1.2125984252" to 6' 6.7401574803") off the ground.
You should not leave a meat thermometer in the turkey while it cooks. This is very dangerous and should be avoided.
The thermometer should be kept upright not tilted. 2.) The bulb of the thermometer should be surrounded from all sides by the substance of which the temperature is to be measured. 3.) The bulb should no touch the surface of the container.
Meat thermometer.
An ear thermometer should be placed carefully in an ear to measure the temperature. The temperature is then taken by an infrared mechanism in the thermometer.
under the tongue
under the tongue to the side of the mouth
under the tongue to the side of the mouth