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CA-200
Section 8: Maintenance and Inspection
8-1. Inspection
Inspect the following points and measure in normal conditions.
If you find troubles, solve and inspect them again.
When they are unknown or found in the unit, contact our distributors.
8-1-1. Daily inspection
(1) Titration cell
1. Check that ground parts are not stuck. Rotate electrodes, a plug, and a cock by about 30
degrees and check that they move smoothly.
2. Check a detection electrode and a cathode solution cell and that platinum part and a septum
(ceramic) are not contaminated.
3. Anode solution volume should be 150ml or less and electrodes should be under the liquid level.
However, when total moisture content measured after anode solution change is 800mg or
more for anode solution 100ml, change solution.
4. Cathode solution color should be yellow or red-brown. If it is dark-brown, change it. However,
when total moisture content measured after cathode solution change is 150mg or more for
cathode solution 5ml, change the solution.
(2) Dehydration in a titration cell
Check that a titration cell can be dehydrated within 30 minutes.
(Refer to 5-2. Titration cell dehydration.)
(3) Water standard solution measurement inspection
Measure water standard solution (AQUAMICRON
API corporation-made) or water for inspection.
1. For AQUAMICRON
±3% of guaranteed values and repeatability should be within 3%.
2. For AQUAMICRON
±5% of guaranteed values and repeatability should be within 5%.
3. For water: Inject 5 μl water with a 10μl microsyringe more than 2 times. The recovery
average should be 95 to 105%.
Ⓡ
water standard solution 1mg: Measurement values should be within
Ⓡ
water standard solution 0.2mg: Measurement values should be within
8-1
Section 8: Maintenance and Inspection
Ⓡ
water standard solution 1mg or 0.2mg:
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