
Unpacking and Preparation
9
9
1.3 Setting up Fuse
~Line: 47.5Hz-52.5Hz
198Vac - 242Vac
50VA MAX
Fuse: 250V 1A
Slow Blow
Figure 1-1
Fuse Holder
Please use the following fuse type
:
UL/CSA type, Slow-Blow, 5×20-mm miniature fuse, 1A, 250 V .
1.4 Environmental Requirements
Ensure that the operating environment meets the following requirements.
Temperature: 0
C to 55
C
Operating
stated
accuracy
:
<80%RH
Temperature
range
at
calibration:
23
C±5
C
Stated
accuracy
:
<70%RH
1.5 Cleaning
To prevent electrical shock, disconnect the AT680 power cable from the receptacle
before cleaning.
Use a dry cloth or a cloth slightly dipped in water to clean the casing.
Do not attempt to clean the AT680 internally.
WARNING: Don’t Use Organic Solvents (such as alcohol or gasoline) to clean the
Instrument.
1.6 How to Remove the Handle
A handle kit is attached to the AT680.