HT instruments HT7051 User Manual
Page 6

HT2055
EN - 5
3 PREPARATION FOR USE
3.1 INITIAL
INSPECTIONS
Before shipment, the instrument’s electronics and mechanics were inspected. All possible 
precautions were taken to permit delivery of instrument free of damage. 
 
However, we recommend generally inspecting the instrument in order to detect any 
damage suffered during transport. Should you detect any anomalies, immediately contact 
the forwarding agent or the dealer. 
 
Moreover, we recommend checking that the package contains all parts listed in § 11.3. 
Should you find any discrepancy, please contact the dealer. Should it be necessary to 
return the instrument, please follow the instructions reported in § 12. 
3.2 INSTRUMENT POWER SUPPLY 
The station unit HT2055S is power-supplied by 230V ± 10%, 50/60Hz mains while the 
meter unit HT2055M is power-supplied through 6x1.2V IEC AA internal rechargeable 
batteries which are recharged from the mains by means of a battery charger supplied as 
standard accessory. The use of 6x1.5V type AA LR6 alkaline batteries is also possible for 
this unit. The symbol “
“ indicates that the batteries are low and must be recharged.
To recharge or replace the batteries, follow the instructions given in § 10.1 
 
CAUTION
 Use NiMh rechargeable batteries IEC LR6 all of the same type for the
HT2055M unit
 Do not charge alkaline battery cells
 At the first use of HT2055M unit connect the instrument to the mains power
supply for at least 14 hours to fully charge batteries. When you charge the 
batteries for the first time, it normally takes about 4 charge and discharge 
cycles for the batteries to regain full capacity 
3.3 CALIBRATION 
The instrument complies with the technical specifications reported in this manual. Its 
correct operation is guaranteed for one year from the date of purchase. 
3.4 STORAGE 
In order to guarantee accurate measurements and protect the instrument from possible 
failures, after a long storage period under extreme environmental conditions, wait for the 
instrument to return to a normal condition (see the environmental specifications listed in § 
11.2). 
