GRAPHTEC GL840 - Page 12

IV
Introduction
(9) When you want to use in combination of the Petit LOGGER GL100-WL (separately sold) and various
modules (such as GS sensor and terminal / adapter), please refer to the GL100 User’s Manual.
•
When using in combination described above, please be careful to the operating environment because
the environmental conditions of the GL840 midi LOGGER are applied.
It may cause abnormal operation or damage.
• Allowable temperature range: 0 to 45°C, Allowable humidity range: 5 to 85%R.H, non-condensing.
(0 to 40°C when battery-powered / 15 to 35°C when charging)
When using temperature and humidity sensor (GS-TH) and the GL840 at the same time, the
operating environment of GL840 is applied.
•
Temperature and Humidity Sensor (GS-TH):
• Humidity sensors measure the change in dielectric capacity of water adsorption. As a result, humidity
from organic materials such as ne particles or exhaust gas may have an effect on the sensor. Use
in environments with large quantities of these organic materials may lead to signicant measurement
inaccuracies.
•
CO2 Sensor (GS-CO2 ):
• Because exhaled CO2 may have an effect on the sensor readings, do not use the sensor to take
measurements near the face.Additionally, should air ow to the sensor be blocked, it will result in
inaccurate readings, so be sure to keep vent holes open.
•
Illumination / Ultraviolet Sensor (GS-LXUV):
• When measuring illumination or ultraviolet light that can have harmful effects on the eyes or skin, be
sure to use protective eyewear, shielding, etc.
• If the sensor becomes dirty, it may affect measurements, so wipe it with a soft cloth when it becomes
dirty.
• Take care to avoid cracking the sensor when handling it. If the sensor is damaged or cracked it may
affect measurements, so replace the sensor.
•
Others
• Depending on the usage and operating environment of Temperature and Humidity Sensor (GS-
TH), CO2 Sensor (GS-CO2), and Illumination / Ultraviolet sensor (GS-LXUV), it is recommended to
replace periodically the sensor with new one because the sensor performance may be deteriorated.
• The 3-axis Acceleration/Temperature Sensor (GS-3AT) conforms to the IP54 standards, but the
GL840 does not conform to the IP54 standards. When connecting the GS-3AT to the GL840, it cannot
be used as a product that conforms to the IP54 standards.