do_issues
Differences
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do_issues [31/03/2015 12:26] pieter |
do_issues [26/03/2018 10:21] pieter |
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| * Unscrew the membrane cap (8) from the electrode body (2). | * Unscrew the membrane cap (8) from the electrode body (2). | ||
| * Clean it with distilled water (DI water). | * Clean it with distilled water (DI water). | ||
| - | * Fill the membrane cap with the electrolyte to a level above the membrane cartridge using the syringe provided. Hold the electrode in an upright position and gently screw the cap back onto the body. Make sure there remain no air bubbles in it. | + | * Fill the membrane cap with the electrolyte |
| * Please inspect the membrane for tears or leakage. The membrane should be uniformly stretched across the inner body. Replace the membrane if any damage has occurred. | * Please inspect the membrane for tears or leakage. The membrane should be uniformly stretched across the inner body. Replace the membrane if any damage has occurred. | ||
| * Let the electrode rest for a while to polarise. This can be followed by reading the output value with the meter. It is required to wait until the measurement has stabilised. This can take several hours. | * Let the electrode rest for a while to polarise. This can be followed by reading the output value with the meter. It is required to wait until the measurement has stabilised. This can take several hours. | ||
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| Check the correct position of the O-ring, insert the capsule and push it to its final position using the supplied stick, check the membrane. | Check the correct position of the O-ring, insert the capsule and push it to its final position using the supplied stick, check the membrane. | ||
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| ===== Zero point ===== | ===== Zero point ===== | ||
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| Saturate distilled water in a vessel by purging air in it for approximately 20 minutes to create 100% air saturation. Perform the saturation of the solution under operating pressure. Allow the output signal to stabilise. Follow the instructions of the meter to calibrate the electrode at 100% saturation. | Saturate distilled water in a vessel by purging air in it for approximately 20 minutes to create 100% air saturation. Perform the saturation of the solution under operating pressure. Allow the output signal to stabilise. Follow the instructions of the meter to calibrate the electrode at 100% saturation. | ||
| - | ===== Maintenance ===== | ||
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| - | The electrode requires only little maintenance but should be checked regularly. Normal cleaning/ | ||
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| - | After the electrode has been used for a period of time, the residual current may rise (see Zero point). To reduce the residual current, the following cleaning method is recommended. | ||
| - | - Carefully unscrew the membrane cap from the body. | ||
| - | - Rinse the inside of the membrane cap with DI water. | ||
| - | - Soak the Lead anode in 0.1N HCl (Do not use aqua regia!) for 15 to 20 minutes. Rinse thoroughly with DI water, blot dry with tissue paper. | ||
| - | - Mix soap, water and a few drops of ammonia together in a container. Brush the cleaning solution onto the tarnished Platinum with care. Use an old toothbrush or other soft-bristled brush. Work gently to get rid of the tarnish. | ||
| - | - Rinse the soaked portions thoroughly with DI water. Blot dry with tissue paper. | ||
| - | - Reassemble the electrode according to the method described in Start Up. | ||
do_issues.txt · Last modified: 26/03/2018 10:21 by pieter
