Day 34 — Digital Thermometer Calibration

What is the title of the Day 34 calibration infographic?

Digital Thermometer Calibration[cite: 13

What core subtitle or topic basis is covered in Day 34?

Manufacturer specification and applicable method[cite: 13

What learning journey series does Day 34 belong to?

Continuing my 90-Day Calibration Learning Journey Beginner to Calibration Specialist 2026[cite: 13

What is a digital thermometer?

A temperature instrument that displays a numerical reading and may include RTD/PRT

What must be identified first when starting with the specification?

Make

What parameters should be confirmed regarding range and display in specifications?

Measurement range and display resolution[cite: 14]

What should be checked regarding accuracy or permissible error?

The accuracy or permissible-error statement and its conditions[cite: 14]

What compatibility must be confirmed before calibration?

Probe and indicator compatibility[cite: 14]

How should calibration points be selected?

From intended use

What vital warning is given about resolution in specifications?

Resolution is not the same as accuracy[cite: 14]

What equipment is required in the calibration setup?

A suitable calibrated reference

What must be allowed during the calibration setup measurements?

Readings to stabilize following approved method and manufacturer instructions[cite: 14]

What formula defines indication error in the measurement model?

E equals IDUT minus Tref[cite: 13

What formula defines correction in the measurement model?

C equals negative E[cite: 13

What does E represent in the measurement model?

Indication error[cite: 13

What does IDUT represent in the measurement model?

DUT indication[cite: 14]

What does Tref represent in the measurement model?

Reference temperature[cite: 14]

What does C represent in the measurement model?

Correction[cite: 14]

What relationship exists between correction and error?

Correction and error have opposite signs[cite: 13

What is step one of the calibration workflow?

Review request

What is step two of the calibration workflow?

Identify instrument and probe[cite: 14]

What is step three of the calibration workflow?

Inspect condition

What is step four of the calibration workflow?

Verify reference and temperature source[cite: 14]

What is step five of the calibration workflow?

Select calibration points as applicable[cite: 14]

What is step six of the calibration workflow?

Stabilize at each point by allowing time[cite: 14]

What is step seven of the calibration workflow?

Record readings for reference and DUT[cite: 14]

What is step eight of the calibration workflow?

Calculate error and correction[cite: 14]

What is step nine of the calibration workflow?

Evaluate uncertainty[cite: 14]

What is step ten of the calibration workflow?

Report results including uncertainty

What reference temperature and DUT indication are used in the worked example?

Reference temperature is 100.00 degrees Celsius and DUT indication is 100.30 degrees Celsius[cite: 13

What are the calculated error and correction values in the worked example?

Error is +0.30 degrees Celsius and correction is -0.30 degrees Celsius[cite: 13

What important note is attached to the worked example?

One point does not establish overall accuracy or pass/fail[cite: 13

What uncertainty contributors are listed for digital thermometer calibration?

Reference calibration

What must be reported when presenting reporting and conformity data?

Report indication

When can pass/fail statements be provided?

Only when applicable specification/tolerance and documented decision rule are established[cite: 14]

What common mistakes are listed in panel nine?

Confusing resolution with accuracy

What core metrology principles are highlighted in the bottom banner of panel nine?

Accuracy does not equal resolution

What is the technical question in the calibration challenge?

At reference 50.00 degrees Celsius and DUT reads 50.20 degrees Celsius

What is the answer to the technical question in the challenge?

Error equals +0.20 degrees Celsius and correction equals -0.20 degrees Celsius[cite: 13

What is the witty question in the calibration challenge?

If the display shows more digits

What is the answer to the witty challenge question?

No

What is the practical question in the calibration challenge?

Readings drift at a calibration point

what would you check and document?[cite: 13

14]

What is the suggested response to the practical challenge question?

Check temperature-source stability

What key references are cited for Day 34?

NIST/NC SOP 25 2021

What is the core practical takeaway for Day 34?

Follow actual manufacturer specification and approved method