HT instruments M71 - Manual (Page 6)

M71
EN – 5
2. GENERAL DESCRIPTION
This instrument, whether used according to the instructions given in this manual, will grant
you accurate and reliable measurements. Thanks to a development of newest conception
assuring double insulation and overvoltage category III you will enjoy the highest safety.
The instrument is capable of performing the following measurements:
EARTH 2W: Two-wire earth resistance measurement .
EARTH 3W: Three-wire earth resistance measurement.
3. PREPARING THE INSTRUMENT
3.1. INITIAL CHECK
This instrument was checked both mechanically and electrically prior to shipment.
All possible cares and precautions were taken to let you receive the instrument under
perfect conditions.
Notwithstanding we suggest you to check it rapidly to check any damage which may have
occurred during transport. Should it be the case please contact immediately the
manufacturer HT or your local dealer.
Make sure that all standard accessories mentioned in the enclosed packing list are
included in the packaging. In case of discrepancies contact your dealer.
Should you have to return back the instrument for any reason please follow the
instructions mentioned in § 7.
3.2. POWER
SUPPLY
The instrument is powered by batteries (see § 6.1.2). When batteries are low, the low
battery indication is displayed. To replace/insert batteries follow the instructions indicated
in § 5.2
3.3. CALIBRATION
The instrument complies with the technical specifications contained in this manual and
such compliance is guaranteed for 12 months from purchase date.
3.4. STORAGE
After a period of storage under extreme environmental conditions exceeding the limits let
the instrument resume normal measuring conditions before using it (see § 6.2.1).