Instrument to teach you check method of double metal food thermometer

Bimetallic food thermometer easy to use, safe and reliable, long service life, and fast reading, is a measure of the temperature of the food is very good. In principle, bimetallic thermometer food thermometers are or use after every day to check, but not possible to check it every day, and back to the manufacturers check is not a long-term solution, today small make up teach calibration method, can check on your own, convenient and easy. Recognized as one of the two kinds of test methods is the boiling point and freezing point, boiling point method precondition is to know of the altitude, not more than 1000 feet, if not clear his elevation, or by freezing method is better. Take a look at the boiling point method under the specific steps: first step: clean tap water to burn a pot; Step 2: put the probe of the thermometer in the boiling water to make induction area was completely submerged; Step 3: wait for 30 seconds or indicator to stop change; Step 4: if the temperature is shown as 212 ℉ ( 100℃） , then remove the thermometer, suggests that the thermometer is accurate; Step 5: if the temperature of the boiling water is not 212 ℉ ( 100℃） , be about to turn the rotary button with tools, make the pointer refers to 212 ℉ ( 100℃） , or back to where you are boiling water temperature. Take a look at below are not affected by the freezing point of elevation control method, specific steps: first step: in a large container filled with some crushed ice, then use clean water to fill; The second step: put the probe of the thermometer immersed in ice water, wait for 30 seconds or indicator to stop change; Step 3: if the temperature display is 32 ℉ ( 0℃） , then remove the thermometer, suggests that the thermometer is accurate; Step 4: if the temperature is not 32 ℉ ( 0℃） , be about to turn the rotary button with tools, make the pointer refers to 32 ℉ ( 0℃） 。