3B SCIENTIFIC PHYSICS AM51 Instruction Sheet

3B SCIENTIFIC ® PHYSICS
Analogue Multimeter AM51 1003074
Instruction sheet
04/15 SD
1. Safety instructions
•
Before using the analogue multimeter, make
sure you read the operating instructions
carefully and that you comply with them
completely.
•
The safety of the multimeter and the person
operating it can only be guaranteed if it is
used in accordance with the instructions. Do
not operate or handle this unit incorrectly or
inappropriately.
•
The device may only be used by persons,
who are aware of the hazards of contact (for
voltages over 30 V rms) and can undertake
the appropriate safety precautions. This also
includes the appearance of unforeseen volt-
ages e.g. in defective units or charged ca-
pacitors.
This multimeter is not a toy and must not fall into
the hands of children.
•
Do not place it, keep it or use it anywhere
within reach of children.
•
When the multimeter is used by teenagers,
trainees etc., a suitable person should super-
vise to ensure the equipment is used safely.
•
If measurements are made where there are
any risks of coming into contact with elec-
tricity, a second person is to be informed.
1
2
3
4
5
6
7
•
Be particularly careful when measuring volt-
ages in excess of 33 V AC (RMS) or 70 V
DC.
•
For voltages which are in excess of 33 V AC
or 70 V DC, only use safety measurement
leads conforming at least to CAT II.
•
In the case of voltage and current measure-
ments the nominal voltage between the
phase and neutral conductor may not exceed
300 V according to CAT II (in circuits that are
directly connected to the mains) and CAT III
(in building wiring installations) 300 V.
•
The analogue multimeter may not be used
for measurements in circuits with corona
discharge (high voltage).
•
In measurements involving RF circuits spe-
cial care must be taken due to the existence
of dangerous hybrid voltages.
•
The appropriate permissible measurement
range may not be exceeded. Always change
from a higher measurement range to a lower
measurement range.
•
Before using the device, check the housing
and the measurement cables for any damage.
•
The multimeter may only be used in a dry,
dust-free environment with no risk of explo-
sions occurring. Workplace, hands, shoes
and floor must be dry.
1
Rotary switch to select
measurement range
Rotary knob to set full-scale
deflection for 0 Ω
Connection for voltage
measurement
Connection for current and
resistance measurement
Connection for ground
Adjustment screw for
mechanical zero-point
setting
Nub to latch the housing
shut