23
Connecting the Sensor
◆
Connecting the Sensor.
〔
TR-71U
〕
●
If a temperature sensor is connected to only the ch. 2 jack, the internal
sensor will be used to measure for ch. 1.
●
To avoid poor connections, be sure to push the sensor connector securely
into the jack.
NOTE:
If a sensor extension cable is being used with the data logger connected by
USB to your computer, electromagnetic waves may cause large errors in
measurements.
〔
TR-72U
〕
※
When using the temperature
/
humidity sensor in environments where
the temperature is 0 to 15
℃
and humidity under 30
％
RH, there may
occur changes in measurement readings. This is not a malfunction.
●
To avoid poor connections, be sure to push the sensor connector securely
into the jack.
24
【
Handling the temperature
/
humidity sensor
】
●
The temperature
/
humidity sensor should be changed after a period of
about one year. After removing the sensor from its package, please change
the temperature
/
humidity sensor after one year’s usage.
During use, the temperature
/
humidity sensor will accumulate impurities
(
dirt
)
on the surface of the sensor causing the sensor's accuracy and sensitivity
to decrease. If the sensor is being used in a bad environment
(
smoky or
dusty places
)
it may be necessary to change the sensor sooner.
●
When the temperature/humidity sensor is not being used, please place it in
the attached vinyl bag with the drying agent included and store it in a cool
dark place with a temperature of between 5 to 25
℃
and a humidity of below
30
％
RH.
●
Attached to the temperature
/
humidity sensor are two stickers: a wetness
detection sticker and a temperature detection sticker. If either of the sticker
shows abnormality, you should change the old sensor with a new one
immediately.
Wetness Detection
Sticker
Temperature Detection
Sticker
●
Wetness Detection Sticker
Informs you that the sensor has been wet.
Normal:
Under normal conditions, black
do t s will appear on a whit e
background.
Abnormal:
Under abnormal conditions, it will
turn to red.
●
Temperature Detection Sticker
Informs you that the sensor measured a temperature measurement over 60
℃
.
60
60
Normal:
Under normal conditions, the
number
「
60
」
will lightly appear on
a pinkish white background.
Abnormal:
Under abnormal conditions, the
number
「
60
」
will clearly appear
on a red background.
