SEFRAM MW 3031 Notice D'utilisation page 23

Specifications
1-1 General Specifications
LCD display digits : 4000 counts large
scale LCD readout.
Measuring rate : 3 times / sec.
Overrange display :
"OL" or "-OL"
Automatic power off time :
Approximately 20 minutes after power on.
Low battery indicator :
Power requirement : 1.5V x 2 batteries
Battery life : ALKALINE 150 hours
1-2 Environmental Conditions
Indoor Use.
Calibration :
One year calibration cycle.
Operating temperature :
0°C ~ 30°C (≦80% RH)
30°C ~ 40°C (≦75% RH)
40°C ~ 50°C (≦45%RH)
Storage temperature : -20 to +60°C,
0 to 80% RH (batteries not fitted).
Overvoltage category :
IEC 61010-1 600V CAT.Ⅲ.
CAT
The circuits are not connected to
Ⅰ
mains.
The circuits are directly connected to
Ⅱ
Low-voltage installation.
The building installation.
Ⅲ
The source of the Low-voltage
Ⅳ
installation.
Application field
is displayed.
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