Operating Environment; Ambient Operating Conditions; Warming-Up Before Use - GRAPHTEC GL840 User Manual

Data Control & Processing
•
The application software provided lets you set conditions and monitor data on a PC.
•
The USB drive mode function enables the SD memory card to be recognized as an external drive by the
PC.
(Connect the GL840 to the PC and turn on the GL840 power while holding down the [START] key.)
•
The WEB server function enables control and monitoring from a remote location without using dedicated
software
•
The FTP client function enables backup of measurement data to the FTP server.
•
The NTP client function enables synchronization of the time with the NTP server.
•
When optional wireless LAN unit is installed, the data capture can be performed remotely by controlling
the GL100-WL.

1.3 Operating Environment

This section explains the operating environment for the GL840.

Ambient Operating Conditions

(1) Ambient temperature and humidity (the GL840 must be operated within the following ranges.)
• Temperature range: 0 to 45°C (0 to 40°C when a battery pack is mounted, 15 to 35°C when battery is
being charged)
• Humidity range: 5 to 85%R.H.
(2) Environment (do not use in the following locations.)
• A Location such as being exposed to direct sunlight
• Locations exposed to salty air, corrosive gases, or organic solvents
• Dusty locations
• Locations subject to vibration or impact
• Locations subject to voltage surge or electromagnetic interference such as lightning or electric furnaces
(3) Installation category (over-voltage category)
• The GL840 belongs to Installation Category II defined in IEC60664-1.
• Never use the GL840 for Installation Category III or IV.
(4) Measurement category
• The standard terminals on the GL840 are not used for Measurement Category II, III, and IV.
• The Withstand high-voltage high-precision terminal for the GL840 belongs to Category II. However, it is
not available for Category III or IV.
•If condensation occurs...
Condensation occurs in the form of water droplets on the device surfaces and interior when the GL840
is moved from a cold to a warm location. Using the GL840 with condensation will cause malfunctioning.
Wait until the condensation has disappeared before turning on the power.

Warming-up Before Use

The GL840 should be allowed to warm up with the power turned on for approximately 30 minutes to ensure
that it operates according to the specified performance.
CHAPTER 1 General Description
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