Fill a glass with crushed ice and add cold water until the glass is full. Insert thermometer probe in the center of the glass of ice water, not touching the thermometer to the bottom or sides of the glass. Stir slightly, then wait until the temperature indicator on the thermometer is stabilized.
Secondly, can you calibrate a digital body thermometer?
Most probe-type (<$20) digital medical thermometers are called disposable thermometers because they get out of calibration and there’s no way to calibrate them, so they come in 10 to 100 packs, for medical professionals. They get out of calibration if dropped, if they get too hot, or after 2 years.
Thereof, can you calibrate a thermometer?
Hold the calibration nut securely with a wrench or other tool and rotate the head of the thermometer until it reads 32˚F (0˚C). Thermometers should be calibrated regularly to make sure the readings are correct. The ice-point method is the most widely used method to calibrate a thermometer.
How accurate is a digital thermometer?
Digital thermometers provide accurate readings in about 1 minute or less.
Testing Your Thermometer
- Fill a tall glass with ice and add cold water.
- Place and hold the thermometer in the ice water for 30 seconds without touching the sides or bottom of the glass. …
- If the thermometer reads 32°F, it is reading correctly and can be used.
The digital thermometer should display LOW. Turn the thermometer off and leave it at room temperature for 30 minutes. Now do the same test all over again using a cup of hot water, then a cup of cold water. Your thermometer is now calibrated and should show accurate temperature readings going forward.
Insert the thermometer stem at least an inch deep in the ice water without letting the stem touch the glass. Wait for the thermometer to register; this usually takes a minute or less. The thermometer is accurate if it registers 32° F or 0° C.
Once a thermometer’s accuracy is authenticated, it can serve as a reference to establish traceability for other thermometers. This process can be continued, providing an unbroken chain of measurements from the final thermometer all the way back to the NIST standards.
NIST-certified thermometers are used to verify and calibrate routinely used temperature equipment. Certified at critical temperatures with correction factors. Comes with NIST certificate.