SMA 92
Digital multimeter
EN
Overview: This digital multimeter was designed with a view to comply with
the safety requirements of standard IEC 61010-1. Compliant with the 600
V CAT II measurement category. Before using this instrument, please read
the instruction manual and observe the relevant safety precautions. CAT II:
Measurements on circuits that are directly connected to low voltage circuits.
For example, measurements on household appliances, portable devices
and similar equipment. CAT I: Measurements on electric circuits that are
not directly connected to mains.
Warning! These operating instructions contain the information and
warnings required for the safe use and maintenance of the unit. Read
and understand the instructions for use before using the device. Failure to
understand the instructions or observe the warnings can result in serious
personal injury or property damage. For your safety, please use the probe
cable included with the multimeter. Before use, please check that your mul-
timeter is intact and serviceable.
Important warning Read the
contents of the instruction manual.
alternating current
direct current
grounding
double grounding (Contact protection class II)
fuse protected. Please replace according to the
instructions for use.
Maintenance
In order to split the outer shell of the multimeter or remove the battery
compartment first unplug the probe cable. Before opening the multimeter,
remove the battery and check that there is no static electricity charge pre-
sent to ensure that the multimeter’s components are not damaged. Before
opening the multimeter, you should be aware that dangerous voltage may
be present in some of the capacitors even if the device is switched off.
The calibration, maintenance and servicing of the multimeter should only
be performed by a specialist who is completely familiar with the operation
of the multimeter and the shock hazard involved. If not planning to use the
multimeter for an extended period of time, please remove the battery and
avoid storing the unit in excessively warm or humid environments. If neces-
sary, replace the fuse with one matching the parameters below:
F1: 5x20 mm, F 250 mA / 250 V
F2: 6x30 mm, F10 A / 250 V
Do not use any abrasives or solvents on the device. Only use a damp cloth
or mild detergent for cleaning the unit.
During Use
• If the unit is used near strong electromagnetic interference, please note
that the multimeter’s operation can become unstable or it may indicate
malfunction.
• Never exceed the safety limits which are specified in the instructions for
each measurement range.
• Never use the unit without its rear panel fully attached.
• Remove from circuit and discharge the high voltage capacitors before
measuring resistance, interruption, diodes or capacity.
• Be very careful when working with bare cables or bus bars.
• If any irregular operation is detected on the multimeter, immediately switch
it off and have it serviced.
• If the value to be measured is unknown, check the highest possible
measurement range on the multimeter, or whenever possible, select the
automatic measurement range mode.
• Before turning the limit selection switch, disconnect the probe cable from
the measurement circuit.
• Never perform resistance or interruption measurements on energized
circuits.
• When performing measurements on TV sets or circuits with high AC,
always remember that there might be high amplitude voltage on the test
points, which can damage the multimeter.
• If the voltage to be tested exceeds the effective value of 60 V DC or 30 V
AC, work carefully in order to avoid sustaining an electric shock.
• If the battery symbol appears on the display, the battery must be replaced
immediately. Low battery voltage may result in measurement errors, elec-
tric shock, or even injury.
• Keep your fingers away from the connecting sockets.
• Do not use the multimeter in the presence of flammable gas, vapours
or dust.
• Before each use, check the unit in order to ensure proper operation (e.g.,
using a known voltage source).
• When performing CAT II and CAT III voltage measurements, the voltage
may not exceed 600 V, respectively.
General description
This instrument features a 3½ digit, 7-segment display. It can be used to
measure direct current, alternating current, DC voltage, AC voltage, resis-
tance, frequency, diodes and interruption. Capable of saving the maximum
value measured, has background illumination, and automatically switches
measurement ranges. The reading can be saved on the display. Switches
off automatically.
Display symbols
low battery
–
negative input polarity
AC voltage/alternating current
DC voltage/direct current
diode test
interruption test