20
Usage Notes
Handling of temperature and humidity sensor
CAUTION
•
The temperature and 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.
•
The temperature and humidity sensor is not drip-proof. Water that drips
onto the connector could cause a malfunction.
•
Sensor sensitivity and precision will degrade over time, even under normal
operating conditions. To maintain the instrument’s ability to make measurements
that conform to the accuracy specifications, it is recommended to replace the
temperature and 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) environment,
the sensor accuracy may deteriorate even within the 1 year accuracy warranty
period and accurate measurement cannot be performed.
•
In principle, the surface of the instrument’s temperature and 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 temperature and 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 temperature and 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 particularly 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) environment.
•
Due to a humidity change (from low to high humidity or high to low humidity),
up to ±1% RH of change (hysteresis) occurs in the measured humidity value.
Precautions during shipment
CAUTION
•
To avoid damaging the instrument, remove accessories and options from
the instrument.
•
Avoid any vibration or impact to prevent damage to the instrument,
humidity sensor, and clamp sensor during transportation and handling.
Be careful especially with impact by a fall.
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