HT321 - HT322
EN - 1
Table of contents:
1.SAFETY PRECAUTIONS AND PROCEDURES..........................................................2
1.1.Preliminary ........................................................................................................................ 2
1.2.During use......................................................................................................................... 3
1.3.After use............................................................................................................................ 3
1.4.Measuring (overvoltage) categories definitions................................................................. 3
2.GENERAL DESCRIPTION...........................................................................................4
3.PREPARATION FOR USE...........................................................................................4
3.1.Initial.................................................................................................................................. 4
3.2.Supply voltage................................................................................................................... 4
3.3.Calibration......................................................................................................................... 4
3.4.Storage.............................................................................................................................. 4
4.OPERATING INSTRUCTIONS.....................................................................................5
4.1.Instrument description....................................................................................................... 5
4.1.1.Front panel description............................................................................................................... 5
4.2.Description of function keys .............................................................................................. 6
4.2.1.HOLD Key................................................................................................................................... 6
4.2.2.R (RANGE) Key.......................................................................................................................... 6
4.2.3.MAX Key..................................................................................................................................... 6
4.2.4.SEL Key...................................................................................................................................... 6
4.2.5.Backlight key (only HT322) ................................................................................................. 6
4.2.6.Auto Power OFF......................................................................................................................... 6
4.3.Measurements................................................................................................................... 7
4.3.1.DC Voltage measurement.......................................................................................................... 7
4.3.2.AC Voltage measurement .......................................................................................................... 8
4.3.3.Resistance measurement........................................................................................................... 9
4.3.4.Diode test and Continuity test .................................................................................................. 10
4.3.5.Temperature measurement (only HT322)................................................................................ 11
5.MAINTENANCE..........................................................................................................12
5.1.General information......................................................................................................... 12
5.2.Battery replacement........................................................................................................ 12
5.3.Cleaning.......................................................................................................................... 12
5.4.End of life ........................................................................................................................ 12
6.TECHNICAL SPECIFICATIONS.................................................................................13
6.1.Technical features...........................................................................................................13
6.1.1.Safety........................................................................................................................................ 14
6.1.2.General data............................................................................................................................. 14
6.2.Environment.................................................................................................................... 14
6.2.1.Environmental conditions ......................................................................................................... 14
6.3.Accessories..................................................................................................................... 14
6.3.1.Standard accessories............................................................................................................... 14
6.3.2.Optional accessories................................................................................................................ 14
7.SERVICE....................................................................................................................15
7.1.Warranty conditions......................................................................................................... 15
7.2.After-sale service............................................................................................................. 15
