Hanna Instruments HI 5315 User Manual

Page 7

VIII.

VIII. Disassembly - Assembly

Disassembly - Assembly

Disassembly is normally not required or recommended. If

crystals or other matter are seen between outer body and

inner cone, the electrode may be disassembled for cleaning

or inspection. Protect the cone surface from oils or dirt by

using gloves or lab tissues.

1. Drain fill solution from electrode body by depressing

the upper cap while holding the outer body.

2. Rinse inner body with deionized water and drain by

pressing the upper cap.

3. Unscrew upper cap and slide cap and spring up the

sensor cable toward the connector.

4. Push the inner body through the outer sleeve by gently

pushing down on the inner body near the threads.

5. Grasp the cone and gently pull assembly out of sleeve.

6. Cone may be cleaned with deionized water and a soft

lab tissue (HI 731318).

7. Clean and inspect internal surface of outer body.

8. Reassemble electrode by gently pushing the inner

stem assembly into the outer body, sliding spring

down cable, and screwing cap into place. (Refer to

Section VI; Electrode Preparation).

9. Refill electrolyte, flush junction, and then top off

electrolyte.

IXIX

IXIX. Storage

Storage

The HI 5315 reference electrode may be stored in air or

aqueous solutions between sample measurements.

If the electrode will be used frequently and needs to be

ready for use, take measures to prevent evaporation of fill

solution. Top off fill solution, replace o-ring and fill hole

plug on the fill hole opening, and place protective cap over

junction tip. Store electrode upright. Before using, flush

junction once and top off fill solution.

For long term storage, disassemble electrode and wash all

salts from assembly with deionized water. Wrap ceramic

junction on inner stem with Parafilm® or other sealing

film. Store dry and disassembled.