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Temperature Measurement · Glossary

What is a Dry Block Calibrator?

portable temperature sourceTemperature Measurement

A dry block calibrator is a portable heated or cooled metal block with inserts, used to calibrate temperature sensors in the field.

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Dry Block Calibrator Explained

The sensor under test and a reference are placed in the block. The block controls the temperature, and readings are compared at several points.

Uncertainty depends on axial uniformity, insert fit, immersion depth and stability. EURAMET cg 13 gives guidance on calibrating these instruments.

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Calculators for Dry Block Calibrator

CalculatorCalibration Error CalculatorFree online calculator with formula and worked example.CalculatorTest Uncertainty Ratio CalculatorFree online calculator with formula and worked example.CalculatorCalibration Test Points GeneratorFree online calculator with formula and worked example.

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Frequently Asked Questions

What is a Dry Block Calibrator?

A dry block calibrator is a portable heated or cooled metal block with inserts, used to calibrate temperature sensors in the field.

Why use an external reference probe?

The block internal sensor measures the block, not the insert hole; an external reference reduces uncertainty.

How deep must the sensor go?

To the bottom of the insert, and at least the depth the maker states for the specified uniformity.

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