Hioki LR8400-20, Инструкция по эксплуатации

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Operating Precautions
10
Handling of Humidity Sensor
Model Z2000 Humidity Sensor is not dustproof or waterproof. Do not use
the sensor in locations where it may be exposed to dust or water. It may
cause a malfunction of the instrument.
• Sensor sensitivity and precision will degrade over time, even under nor-
mal operating conditions. To maintain the instrument’s ability to make
measurements that conform to the accuracy specifications, it is recom-
mended to replace the humidity sensor with a new unit once it has been
used for one year after being opened.
• When the sensor is used outside the specified operating (storage) envi-
ronment, the sensor accuracy may deteriorate even within the 1 year
accuracy warranty period and accurate measurement cannot be per-
formed.
• In principle, the surface of the instrument’s humidity sensor may become
contaminated if exposed to an environment containing organic gases
(ketone, acetone, ethanol, toluene, etc.), increasing the error component
of humidity measurement.
• Do not expose the humidity sensor to any concentrated chemical solvent
for an extended period of time while it is used or stored.
• The sensor may become contaminated by organic gases released from
some types of vinyl chloride and packaging material.
• When the humidity sensor is not used, place it with a drying agent in a
plastic bag, seal the bag completely, and store it in a cool, dark place.
• Do not allow any condensation to form. Condensation can form particu-
larly in any environment where the temperature changes drastically.
• This instrument does not come with a guarantee against any problem
when the sensor is used outside the specified operating (storage) envi-
ronment.
• Due to a humidity change (from low to high humidity or high to low
humidity), about a 3% change (hysteresis) occurs in the measured
humidity value.