Hach-Lange POLYMETRON 9245 User Manual - Manual (Page 50)

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Installation
4.4.10 Reference electrode installation
1. Remove the reference
sensor from its box.
2. Remove the plastic
reservoir from the bottom
(the storage solution is
KCl 3M) and install the
O-ring as shown.
3. With care, turn the bottom
electrolyte tube ferrule
with a maximum ¼ turn to
lock it.
4. Remove the plastic plug
on the entry port.