Metal Samples MS2500L, Руководство оператора

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The electrodes should not be handled with bare sweaty or oily hands. If possible, pick up the electrodes
with a paper towel or clean cloth and thread onto each of the three mounting pins. The electrodes
should be firmly hand tightened in place sufficiently to deform the gasket. A one inch piece of plastic
tubing slipped over an electrode is an effective means of tightening it on the probe without soil or
damage. Do not force with pliers or in a vise, as this will mark the surfaces. Do not use thread
lubricant.
The mild steel electrodes have been given a surface preparation to permit fastest possible equilibrium to
the system. Any foreign material such as grease, oil or sweat will delay obtaining uniform readings.
Should a change in location or environmental service of mild steel electrodes be desired, the electrodes
need to be removed, scrubbed with scouring powder and water, and then placed in a beaker of 5-10
percent hydrochloric acid (uninhibited) until the surfaces are uniformly covered with a layer of hydro-
gen gas bubbles. They should be rinsed thoroughly in clean water before reinstalling. This action is
usually sufficient to prevent effects of previous service seriously interfering with the new application.