Proper Operating Conditions; Warranty And Repair; Maintenance; Protective Switch Off - Hameg HM8112-3 Manual

6 1/2 digit precision-multimeter
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Overhead lines
Premises
Permanently installed
In-house
machinery, distribution sites,
installation
power conductors, mains
outlets close to the CAT IV
installation
CAT IV
CAT III
are short, fast, and fast-rise changes of voltage or current,
and may be periodic or non-periodic. The amplitude of
transients increases with decreasing distance from their
source.
CAT IV: Measurements at the source of a low voltage supply,
e.g. at electricity meters.
CAT III: Measurements inside a building, e.g. at distribution
sites, power switches, permanently installed mains
outlets, permanently mounted motors etc.
CAT II: Measurements in circuits which are directly
connected with the low voltage supply, e.g. household
appliances, portable tools etc.
CAT I:
Electronic instruments and circuits which contain
circuit breakers resp. fuses.

Proper operating conditions

Operation in the following environments: industry, business
and living quarters, small industry. The instruments are
intended for operation in dry, clean environments. They must
not be operated in the presence of excessive dust, humidity,
nor chemical vapours in case of danger of explosion.
The maximum permissible ambient temperature during
operation is +10 to +40 deg. C. In storage or during transport
the temperature limits are: –40 to +70 deg. C. In case of
exposure to low temperature or if condensation is suspected,
the instrument must be left to stabilize for at least 2 hrs prior
to operation.
In principle the instrument may be used in any position,
however sufficient ventilation must be ensured. Operation for
extended periods of time requires the horizontal or tilted
(handle) position.
Nominal specifications are valid after 30 minutes warm-up at
23 deg. C. Specifications without tolerances are typical values
taken of average production units.

Warranty and Repair

HAMEG instruments are subject to a strict quality control. All
instruments are burned in for 10 hrs prior to shipment. Alm-
ost all early failures are detected by intermittent operation.
After burn-in a thorough test of all functions and of quality is
run, all specifications and operating modes are checked.
In case of claims during the two years warranty period please
contact the dealer from whom you purchased your HAMEG
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
instrument. Customers from the Federal Republic of Germany
may directly contact HAMEG for warranty processing in order
to speed up the procedure.
The proceeding of repairs during the warranty period is subject
to our terms of warranty which are available on our web-site
(http://www.hameg.com). Even after expiry of the warranty
period please do not hesitate to contact our HAMEG customer
Mains outlets for
service for repairs and spare parts.
household appliances,
portable tools, PC,
refrigerator etc.
CAT II
STOP

Maintenance

The instrument does not require any maintenance. Dirt may
be removed by a soft moist cloth, if necessary adding a mild
detergent. (Water and 1 %.) Grease may be removed with
benzine (petrol ether). Displays and windows may only be
cleaned with a moist cloth.
STOP
STOP
Mains voltage
A main voltage of 115V and 230V can be chosen. Please check
whether the mains voltage used corresponds with the voltage
indicated by the mains voltage selector
If not, the voltage has to be changed.

Line fuse

The instrument has 2 internal line fuses: T 0.2 A. In case of a
blown fuse the instrument has to be sent in for repair. A change
of the line fuse by the customer is not permitted.

Power switch

Normally the power switch
panel of the instrument should be stay in "ON"
position. If using the Standby-button
front panel, only the controls and the display
are turned off. The instrument itselfs stays
turned on as long as it is connected to the
supply voltage. This has the advantage that
the instrument is immediately functional after
turn-on. Also the reference voltage source will
remain energized, so any drift after turn-on will be eliminated,
also its long term drift will be substantially improved. To switch-
off the instrument completely, the power switch on the back panel
has to be operated.
I m p o r t a n t
Return Material Authorization (RMA):
Before sending back your instrument to HAMEG do
apply for a RMA number either by fax or on the
Internet: http://www.hameg.de.
If you do not have suitable packaging for the in-
strument on hand please contact the HAMAG sales
department (Tel.: +49 (0) 6182/800 300, E-mail:
vertrieb@hameg.de) to order an empty original
cardboard box.
Do not use alcohol, solvents or paste. Under no
circumstances should any fluid be allowed to get
into the instrument. If other cleaning fluids are
used damage to the lacquered or plastic surfaces
is possible.
28
on the rear
If the instrument is left unattended for some time,
the power switch on the rear panel has to be
operated. (Because of safety reasons!)
Subject to change without notice
h i n t s
30
on the rear panel.
on the
37

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