HT instruments HT712 - Manual (Page 2)

HT712
EN - 1
Content :
1. SAFETY PRECAUTIONS AND PROCEDURES ...................................................................... 2
1.1. Preliminary ........................................................................................................................ 2
1.2. During use ......................................................................................................................... 3
1.3. After use ............................................................................................................................ 3
1.4. Overvoltage categories - definitions .................................................................................. 3
2. GENERAL DESCRIPTION ....................................................................................................... 4
2.1. TRMS VALUE and MEAN VALUE - DEFINITIONS .......................................................... 4
2.2. TRUE ROOT MEAN SQUARE VALUE and CREST FACTOR - definitions ..................... 4
3. PREPARATION TO USE .......................................................................................................... 5
3.1. Initial .................................................................................................................................. 5
3.2. Supply voltage ................................................................................................................... 5
3.3. Calibration ......................................................................................................................... 5
3.4. Storage .............................................................................................................................. 5
4. OPERATING INSTRUCTIONS ................................................................................................. 6
4.1. Instrument - description ..................................................................................................... 6
4.1.1. Front panel .................................................................................................................................. 6
4.2. Function keys .................................................................................................................... 6
4.2.1. HOLD .......................................................................................................................................... 6
4.2.2. DISP ........................................................................................................................................... 6
4.2.3. MEAS .......................................................................................................................................... 6
4.3. Special functions ............................................................................................................... 6
4.3.1. Turning on ................................................................................................................................... 6
4.3.2. Auto power off ............................................................................................................................ 6
4.4. Measurements - description .............................................................................................. 7
4.4.1. DC voltage measurement ........................................................................................................... 7
4.4.2. AC voltage and frequency measurement with 2 test leads ........................................................ 8
4.4.3. AC voltage and frequency measurement with 1 test leads ........................................................ 9
4.4.4. Phase sequence test and phase conformity test ...................................................................... 10
4.4.5. Resistance measurement and continuity test ........................................................................... 12
5. MAINTENANCE ...................................................................................................................... 13
5.1. General information ......................................................................................................... 13
5.2. Battery replacement ........................................................................................................ 13
5.3. Cleaning .......................................................................................................................... 13
5.4. End of life ........................................................................................................................ 13
6. TECHNICAL SPECIFICATIONS ............................................................................................. 14
6.1. Technical features ........................................................................................................... 14
6.1.1. Electrical ................................................................................................................................... 15
6.1.2. Safety ........................................................................................................................................ 15
6.1.3. General data ............................................................................................................................. 15
6.2. Environment .................................................................................................................... 15
6.2.1. Environmental conditions ......................................................................................................... 15
6.3. Accessories ..................................................................................................................... 15
6.3.1. Standard accessories ............................................................................................................... 15
7. SERVICE ................................................................................................................................ 16
7.1. Warranty conditions ......................................................................................................... 16
7.2. Service ............................................................................................................................ 16