How To Calibrate A Thermometer. If it does then it is accurate but if not it requires calibration. Hold the calibration nut securely with a wrench or other tool and rotate the top of the thermometer until it reads 32F 0C.
Wait for about three minutes before inserting the sensor on the thermometer into the ice-filled water. So first fill a large container with crushed ice and add cold water till it is full. This may be done by filling a glass with ice that has been crushed.
This may be done by filling a glass with ice that has been crushed.
How often should I calibrate my food thermometer. Add a little clean water until the glass is full and stir. Start by filling a large glass with ice and add cold tap water to the tip. Place the stem of the thermometer in the boiling water.