2110XP Ammonia Analyzer User Guide (1574 Kb) - Thermo Scientific

Instrument Preparation
Installation of New
Reference Electrode
1. Unpack the reference electrode (Cat. No. 210056) and its instruction
sheet from the shipping box.
2. Carefully remove protective caps from bottom and sidearm of electrode.
Save caps for future storage.
3. Shake out as much of the fill solution as possible through the sidearm.
Drain through the sidearm or use a pipette or syringe if needed.
4. While passing 1/8 inch tubing into electrode sidearm, slide 1/4 inch
tubing over sidearm. The outside tubing should extend 3/8 to 1/2
inches over sidearm. Refer to Figure II-9.
Reference Electrode
Filling Solution
Gasket
Tubing Bottle Adaptor
Small 1/8” Tubing Inside
Bottle Cap
Electrode Sidearm
Large 1/4” Tubing
Figure II-9
Reference Electrode
with Filling Solution
Ceramic Frit
5. Remove cap and fluid seal from reference electrode filling solution
bottle (Cat. No. 181073). Hold bottle in upright position. Check
that rubber gasket is properly aligned, then connect cap end of tubing
assembly to bottle. The 1/8-inch tubing should extend into the bottle.
6. Hold reservoir bottle above electrode with bottle cap end down.
Electrode should be horizontal with sidearm pointing up. Gently shake
electrode to allow any trapped air bubbles to rise into bottle as electrode
fills with solution.
7. Dry off ceramic frit on base of the electrode with tissue paper. Squeeze
bottle for a few seconds. A small amount of filling solution should
bead up on frit surface, indicating good fill solution flow. If no
moisture is visible electrode is clogged and should be replaced.
Thermo Scientific Orion 2110XP Ammonia Monitor User Guide
II-11