Discussion of measurement errors – YSI 60 User Manual

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6. Discussion of Measurement Errors

There are two basic types of pH errors. The first type are errors related to limitations of
instrument design and tolerances of components. The second type are errors due to basic sensor
accuracy tolerances, mainly background signal, linearity, and variations in temperature
coefficient. It is unlikely that the actual error in any measurement will be the maximum possible
error.

Errors

• Component and circuitry error: ±0.03 pH

• pH error caused by sensor accuracy and temperature compensation:

±0.1 pH for measurements at 10°C from calibration temperature

±0.2 pH for measurements at 20°C from calibration temperature