GRAPHTEC GL840 User Manual page 11

• Do not touch the tip of thermocouples with bare hand after the thermocouples are connected to the
terminal of this device when the tip of thermocouples is not insulated.
The static electricity of a human body will cause damage to this device.
• Do not put the tip of thermocouples to the object which is containing the static electricity when the tip of
thermocouples is not insulated. The static electricity of object will cause damage to this device.
• Do not put the tip of thermocouples to the object which is containing the leaked high voltage of chassis or
metal etc. when the tip of thermocouples is not insulated.
The leaked high voltage of object will cause damage to this device.
• We recommend that the insulation tape puts on the tip of thermocouples before connecting the
thermocouples to the input terminals.
This will protect this device from the static electricity and the leaked high voltage.
* This applies to all the channels even if channel extension is used.
* When B-564 (B-564SL) and B-565 are mixed, the specifications of B-564 (B-564SL) is applied to all
channels.
5. Notes on Functions and Performance
(1) Be sure to connect the main unit to an AC or DC power supply that conforms to the rated range.
Connection to a non-rated power supply may cause the main unit to overheat and break down.
(2) Do not block the vent on the main unit.
Continued operation with the vent blocked may cause the main unit to overheat and break down.
(3) To avoid malfunctions and other damage, avoid using the GL840 in the following locations.
• Places exposed to high temperature and/or high humidity, such as in direct sunlight or near
heatingequipment.
(Allowable 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), Allowable humidity range: 5 to 85%R.H., non-condensing)
• Locations subject to excessive salt spray or heavy fumes from corrosive gas or solvents.
• Excessively dusty locations.
• Locations subject to strong vibrations or shock.
• Locations subject to surge voltages and/or electromagnetic interference.
(4) If the main unit becomes soiled, wipe it off using a soft, dry cloth. Use of organic solvents (such as thinner
or benzene) causes deterioration and discoloration of the outer casing.
(5) Do not use the GL840 in the vicinity of other devices which are susceptible to electromagnetic
interference.
(6) Measured results may not conform to the stated specifications if the GL840 is used in an environment
which is subject to strong electromagnetic interference.
(7) Insofar as possible, position the GL840 input signal cables away from any other cables which are likely to
be affected by electromagnetic interference.
(8) For stabilized measurement, allow the GL840 to warm up for at least 30 minutes after turning it on.
Introduction
III