Mettler Toledo LV12 Referenzhandbuch Seite 23

8 Technical Data
8.1 General data
Power supply
AC/DC adapter:
Accessory power supply:
Protection and standards
Overvoltage category:
Degree of pollution:
Protection:
Standards for safety and EMC:
Range of application:
Environmental conditions
Height above mean sea level:
Ambient temperature:
Relative air humidity:
Weight and Dimensions
W x H x D
Net weight
Admissible part size
Used Materials
Top cover:
Rear and front cover:
Chute:
Feeder plate:
Inner construction:
8.2 Explanatory notes for the METTLER TOLEDO AC/DC adapter
The certified external AC/DC adapter complies to the requirements for Class II double insulated equipment. It is
not provided with a protective earth connection but with a functional earth connection for EMC purposes. This
earth connection is not a safety feature. Further information about the compliance of our products can be found
in the "Declaration of Conformity" delivered with every product.
In case of testing with regard to the European Directive 2001/95/EC, the AC/DC adapter and the instrument
have to be handled as Class II double insulated equipment.
Consequently, a grounding test is not required. It is
not necessary to carry out a grounding test between
the earth connector of the power plug and any
exposed part of the metallic housing of the
instrument.
Because the instrument is sensitive to static charges,
a leakage resistor of 10 kΩ is connected between the
earth connector (1) and the negative pole (2) of the
AC/DC adapter. The arrangement is shown in the
equivalent circuit diagram. This resistor is not part of
the electrical safety arrangement and does not require
testing at regular intervals.
Automatic Feeder
Primary: 100 – 240 V AC, 50/60 Hz
Secondary: 12 V DC ±5 %, 5 A max (with electronic overload
protection)
12 V DC ±5 %, 0.9 A
II
2
Only use indoors in dry locations
See Declaration of Conformity
For use only in closed interior rooms
Up to 5000 m
10–30 °C
Max. 80 % noncondensing
225 x 260 x 225 mm
10.9 kg
ø 1 mm up to ø 20 mm
PBT
powder coated mild steel sheet, paint coating
X5 Cr Ni 18 10 (1.4301)
X5 Cr Ni 18 10 (1.4301)
mild steel, galvanized
Input
10 kΩ coupling resistor for
electrostatic discharge
1
Plastic housing
Double insulation
AC
Output
DC
Technical Data​ ​ 19
2