HT Instruments T2000 Bedienungsanleitung Seite 30

TABLE OF CONTENTS
1. PRECAUTIONS AND SAFETY MEASURES ................................................................ 2
1.1. Preliminary instructions ..................................................................................................... 2
1.2. During use ......................................................................................................................... 3
1.3. After use ............................................................................................................................ 3
1.4. Definition of measurement (overvoltage) category ............................................................ 3
2. GENERAL DESCRIPTION ............................................................................................ 4
2.1. Measuring average values and TRMS values ................................................................... 4
2.2. Definition of true root mean square value and crest factor ................................................. 4
3. PREPARATION FOR USE ............................................................................................ 5
3.1. Initial checks ..................................................................................................................... 5
3.2. Instrument power supply ................................................................................................... 5
3.3. Storage ............................................................................................................................. 5
4. NOMENCLATURE ........................................................................................................ 6
4.1. Instrument description ....................................................................................................... 6
4.2. Description of function keys ............................................................................................... 6
4.3. Display description ............................................................................................................ 7
5. OPERATING INSTRUCTIONS ..................................................................................... 8
5.1. Switching on/off the instrument ......................................................................................... 8
5.2. Resistance measurement .................................................................................................. 9
5.2.1. Operating principle ........................................................................................................................ 9
5.2.2. Clamp operation check ................................................................................................................ 10
5.2.3. Methods for resistance measurement on earth rods .................................................................. 11
5.2.3.1. Multiple-rod systems ..................................................................................................................... 11
5.2.3.2. Systems composed of a single rod ............................................................................................... 12
5.2.4. HOLD........................................................................................................................................... 15
5.2.5. MEM ............................................................................................................................................ 15
5.2.6. Anomalous situations .................................................................................................................. 15
5.3. Current measurement (T2000) ........................................................................................ 16
5.3.1. HOLD........................................................................................................................................... 16
5.3.2. Anomalous situations .................................................................................................................. 16
5.4. Leakage current measurement (T2000) .......................................................................... 17
5.4.1. HOLD........................................................................................................................................... 17
5.4.2. Anomalous situations .................................................................................................................. 17
5.5. Managing the memory ..................................................................................................... 18
5.5.1. Storage of data in the memory .................................................................................................... 18
5.5.2. Recalling the results on the display ............................................................................................. 18
5.5.3. Deleting the internal memory ...................................................................................................... 19
5.6. Setting of alarm thresholds in resistance measurement .................................................. 19
5.7. RS232 communication with a Master instrument (T2100)................................................ 20
5.8. Disabling Auto Power OFF function ................................................................................. 21
5.9. Disabling sound function ................................................................................................. 21
6. MAINTENANCE .......................................................................................................... 22
6.1. General information ......................................................................................................... 22
6.2. Battery replacement ........................................................................................................ 22
6.3. Cleaning the instrument .................................................................................................. 22
6.4. End of life ........................................................................................................................ 22
7. TECHNICAL SPECIFICATIONS ................................................................................. 23
7.1. Reference conditions ....................................................................................................... 23
7.2. Technical characteristics ................................................................................................. 23
7.2.1. Reference guidelines ................................................................................................................... 24
7.2.2. General characteristics ................................................................................................................ 24
7.3. Environment .................................................................................................................... 24
7.3.1. Environmental conditions for use ................................................................................................ 24
7.4. Accessories provided ...................................................................................................... 24
8. SERVICE ..................................................................................................................... 25
8.1. Warranty conditions......................................................................................................... 25
8.2. Service ............................................................................................................................ 25
EN – 1
T2000-T2100