Hanna Instruments HI 3512 - Manual (Page 54)

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Use ARROW keys to change the cell constant value.
Press Accept to confirm or ESC to exit without changing.
Note: If the cell constant value is modified, the EC slope calibration is
deleted and the NaCl calibration is deleted. If performed, the EC
offset calibration remains active.
Temperature Coefficient
Focus on the
Temperature Coef. item.
Press Modify in order to set the temperature coefficient.
Use the ARROW keys to change the value.
Press Accept to confirm or ESC to exit without changing.
Temperature Reference
Focus on the
Temperature Ref. item.
Press the corresponding functional key to select the desired reference
temperature.