Figure 18 Calibration history report
1 Report type (CH=calibration history) 5 Date of calibration (DD-MM-YY or user-defined format)
2 Parameter (pH, LDO, etc.) 6 Probe serial number (a “<“ or “>” on the HQ40d meter indicates the probe
position).
3 Time of calibration, prefaced by “CAL” and displayed as hh:mm in 24 h (or user-
defined) format
7 Calibration slope/ratio/constant
4 Probe model 8 Offset—contents vary depending on type of parameter and user settings. May
be blank.
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