Hach-Lange LDO Sensor Replacement Kit - Manual (Page 5)

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LDO™ Sensor Replacement for LDO101 Probes, continued
8. Pull to open the iButton®* cover on the pressure-sensor module
( Figure 1 ). Tip the module to remove the existing iButton.
9. Verify that the lot code printed on the new iButton matches the lot code on
the new sensor cap ( Figure 2 ).
10. Insert the new iButton with the paper label facing up.
11. Close the iButton cover and press until it seats against the surface of the
module housing. The cover must be seated properly to ensure good
electrical contact with the iButton and to ensure a proper seal.
12. Re-assemble the protective shroud and ring (if using the rugged probe)
and re-connect the LDO101 probe to the meter.
Note: Changing the iButton resets the stored calibration to correspond to the new
sensor. If the meter was calibrated manually, the
PROBE ? icon will appear to indicate
that the manual calibration is not valid for use with the new sensor.
* iButton is a registered trademark of Maxim Integrated Products, Inc.