horiba B-711, Инструкция по эксплуатации

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5
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Do not measure samples such as the following, since they may
damage the sensor or shorten its life: Organic solvents, oils, adhesives,
cement, alcohols, concentrated acid (0 pH to 2 pH), concentrated
alkaline (12 pH to 14 pH) or surfactants.
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When using this product for the first time or after several days of
disuse, the sensor may be slow to respond. In this case, add some
drops of pH 7 standard solution to the sensor and wait a few hours
before use (there is no need to turn the power ON).
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For some sample types (such as pure water), the measured value may
be unstable.
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A small amount of liquid or white powder may appear on the liquid
junction of the flat sensor. The appearance of this powder or solution is
normal. Simply rinse it off with water before use.
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Battery
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Keep batteries out of reach of children. If someone accidentally
swallows a battery, call a doctor immediately.
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Do not throw batteries in fire.
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Do not attempt to recharge batteries.
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The provided batteries are intended for use in operation checking,
therefore their service life may be short.
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The battery alarm icon lights up when the battery voltage is low.
Replace the batteries when the battery alarm icon lights up. The meter
power may not be turned ON/OFF when the battery voltage is low.
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Replace the 2 batteries at the same time.
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Others
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Wash off any calibration fluid that comes into contact with hands or
other exposed skin. If fluid gets in eyes, rinse them immediately and
see a doctor.