Defort DMM-1000 User Manual Download

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Digital Multimeter

The following icons appear on this device:

Risk of damaging material andlor physical in-
juries

In accordance with essential applicable safety
standards of European directives.

Class II machine - double insulation

Fuse 200 mA/250V

It points to risk of injury, life hazard and pos-
sible damage to the device, if the instructions
in this operating manual are not followed.

1. TECHNICAL SPECIFICATIONS

3,5-digit LCD display (max. display: 1999);

Operatingtemperature: 0 - 40 °C (relative humidity
<75%);

Display frequency: 2-3 /seconds

Maximum «In-phase voltage»: 1000 VDC.

Storage temperature:-10 - +50 °C

Calibration: Tolerances are guaranteed for a period of
one year at 18 °C - 28 °C and relative humidity of <80
%.

PLEASE READ THROUGH THESE OPERATING IN-
STRUCTIONS CAREFULLY!

2. MAKE YOURSELF FAMILIAR WITH THE
PRODUCT

Please read the operating instructions carefully before
putting the multimeter into service and in particular,
observe the safety stipulations. Service the multim-
eter conforming to the instructions, so that it will run
smoothly. Use the multimeter only when you are fa-
miliar with the operation of the device. Preserve these
operating instructions and other records pertaining to
the device carefully.

3. GENERAL SAFETY RULES

Great attention has been paid to the safety aspect in
designing this device. Any change or extension in the
device can compromise the safety. This would even
render the warranty void and ineffective.

•

Ensure order at the work place.

- A disorderly workplace can cause accidents.- En-

sure sufQ cient illumination at the workplace.

•

Pay attention to the environmental factors.

• Do not use the multimeter in humid or wet sur-

roundings. Protect the multimeter from rain and
humidity.

•

Keep children away from it.

• Keep other persons away from the work area and

ensure that they do not touch the multimeter.

•

Store the device in a safe place. Multimeters, which
are not used for a while, must be stored in a dry
room.

• Do not overload the multimeter. Work within the

indicated working range: this is better and safer.
Damages caused by overloading do not fall within
the purview of the guarantee.

•

Do not use the instrument leads improperly. Do not
carry the device suspended by the instrument leads
and do not pull the plug from the multimeter by the
instrument leads; always pull on the plug itself.

•

Service the multimeter with care.

•

Keep the multimeter clean. This facilitates workand
augments the safety. See that the multimeter does
not come in contact with humidity, oil or fat.

•

Pull the plugs out of the instrument leads from the
multimeter, when the multimeter is not in use.

•

Check if the device is damaged.

•

Before using the device, recheckwhetherthe device
and instrument leads are in proper condition and
function correctly.

4. SPECIAL SAFETY RULES

1. WARNING! Measuring high voltages and currents

poses a life hazard. Never touch exposed metallic
parts of the instrument leads.

2. The multimeter is sensitive. Protect it from vibra-

tions and do not let it fall down.

3. If the multimeter is not going to be used for a time,

please switch it OFF to save on batteries.

4. If the multimeter is not gong to be used for a long

period, remove the battery in order to avoid spill-
ing.

5. Do not subject the device to high humidity or high

temperatures.

6. Keep the multimeter away from strong magnetic

Q elds.

7. Remove the instrument leads immediately if you

smell burnt cable insulation.

8. Use the multimeter only if the housing is closed.
9. Use the multimeter only for measurements of the

class I or II.

Do not use the multimeter for measurements in the
class III or IV.

5. ENVIRONMENTAL PROTECTION

Raw material recovery is better than garbage disposal.
To avoid damages in transport, the device must be de-
livered in solid packing made mostly from recyclable
material such as paper, pulp and wood. We therefore
recommend that you recycle the packing as far as pos-
sible.

The multimeter is operated on batteries. Dis-
pose of spent batteries as stipulated.

For instructions on replacing batteries, refer to chapter
13 «Changing batteries».