HT instruments HT9012 User Manual
Page 2
HT9012
EN - 1
Contents:
1
SAFETY PRECAUTIONS AND PROCEDURES ..........................................................2
1.1
Preliminary ........................................................................................................................ 2
1.2
Before use......................................................................................................................... 3
1.3
After use............................................................................................................................ 3
1.4
Measuring (overvoltage) categories definitions................................................................. 3
2
GENERAL DESCRIPTION ...........................................................................................4
2.1
TRMS and Mean Value measuring instruments................................................................ 4
2.2
True Root Mean Square value and crest factor definitions ............................................... 4
3
PREPARATION FOR USE ...........................................................................................5
3.1
Initial.................................................................................................................................. 5
3.2
Power supply..................................................................................................................... 5
3.3
Calibration ......................................................................................................................... 5
3.4
Storage.............................................................................................................................. 5
4
OPERATING INSTRUCTIONS.....................................................................................6
4.1
Instrument description....................................................................................................... 6
4.1.1
Commands description............................................................................................................... 6
4.1.2
Alignment marks......................................................................................................................... 6
4.2
Function key description.................................................................................................... 7
4.2.1
HOLD key ................................................................................................................................... 7
4.2.2
key ........................................................................................................................................ 7
4.2.3
RANGE key ................................................................................................................................ 7
4.2.4
MAX key ..................................................................................................................................... 7
4.2.5
MODE key .................................................................................................................................. 7
4.3
Functions of rotary switch description ............................................................................... 8
4.3.1
DC Voltage measurement .......................................................................................................... 8
4.3.2
AC Voltage measurement .......................................................................................................... 9
4.3.3
AC Current measurement......................................................................................................... 10
4.3.4
Resistance measurement......................................................................................................... 11
4.3.5
Continuity test and Diode test................................................................................................... 12
5
MAINTENANCE .........................................................................................................13
5.1
General informations ....................................................................................................... 13
5.2
Battery replacement ........................................................................................................ 13
5.3
Cleaning .......................................................................................................................... 13
5.4
End of life ........................................................................................................................ 13
6
TECHNICAL SPECIFICATIONS ................................................................................14
6.1
Characteristics................................................................................................................. 14
6.1.1
Safety........................................................................................................................................ 15
6.1.2
General data............................................................................................................................. 15
6.2
Environmental conditions ................................................................................................ 15
6.2.1
Climatic conditions.................................................................................................................... 15
6.3
Accessories ..................................................................................................................... 15
6.3.1
Standard accessories ............................................................................................................... 15
7
SERVICE....................................................................................................................16
7.1
Warranty conditions......................................................................................................... 16
7.2
Service ............................................................................................................................ 16