Bedienungsanleitung Gossen Metrawatt METRA HIT 27M (Seite 3 von 28) (Englisch)

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GMC-I Messtechnik GmbH 3

Table of Contents

Page Page

1 Safety Features and Precautions ...............................4

2 Initial Start-Up ............................................................5

3 Selecting Measuring Functions and Measuring

Ranges .......................................................................6

3.1 Automatic Measuring Range Selection ..................................... 6

3.2 Manual Measuring Range Selection ......................................... 6

3.3 Quick Measurements .............................................................. 7

4 Triple Digital Display ..................................................7

5 Measured Value Storage ............................................8

5.1 Measured Value Storage – Key Function “DATA”

(Hold/Compare) ...................................................................... 8

6 Saving Minimum and Maximum Values

“MIN/MAX” with Time Stamp .....................................9

7 Voltage and Frequency Measurement ......................10

7.1 Voltage Measurement [V] ...................................................... 10

7.1.1 Zero Balancing in the 3 V DC Measuring Range ...................... 10

7.1.2 Transient Overvoltages .......................................................... 10

7.1.3 Voltage Measurements at Above 600 V .................................. 10

7.2 Frequency Measurement [Hz] ................................................ 11

8 Resistance and Diode Measurements ......................11

8.1 Resistance Measurement (2-wire connection) [Ω] .................. 11

8.1.1 Zero Balancing in the 300 Ω and 3 kΩ Measuring Ranges ..... 11

8.2 Continuity Test during Resistance Measurement .................... 12

8.3 Diode Measurements ........................................................... 12

9 Milliohm Measurement (4-Pole-Measurement) .......13

9.1 Compensation of Cable Resistance ........................................ 13

9.1.1 Measurement with Kelvin Probe KC27 ................................... 13

9.2 Thermovoltage Compensation ................................................ 13

9.3 Milliohm Measurement with 200 mA or 20 mA DC [mΩ] ........ 14

9.4 Milliohm Measurement with 1 A Pulsating Measuring

Current [mΩ@1 A]

(automatic thermovoltage correction in 3

…

300

range) ...........14

10 Temperature Measurement [°C] ..............................14

11 Insulation Resistance Measurement [MΩ@...V]

(METRA HIT 27I only) ................................................15

11.1 Preparing for Measurement ................................................... 15

11.2 Insulation Resistance Measurement ....................................... 16

11.3 Ending the Measurement and Discharging .............................. 16

12 Using the Menus – from the Initial InFO Menu to

Operating and Measuring Parameters ..................... 17

12.1 Sampling rAtE ........................................................... 17

12.2 Saving Measured Values ....................................................... 17

12.2.1Memory Mode – DATA Key Function (see also chapter 5.1) ..... 17

12.2.2Memory Mode Operation – STORE Menu Function .................. 18

12.3 Querying Memory Occupancy – INFO  MEMO/OCCUP ......... 18

12.4 Clearing the Memory – MEMO  CLEAr ................................ 18

12.5 Activating the Default Values ................................................. 18

12.6 Transmission Mode Operation with RS 232 Interface .............. 19

13 Characteristic Values ..................................... 22

14 Maintenance ............................................................ 25

14.1 Storage Batteries and Batteries ............................................. 25

14.2 Fuses ................................................................................... 26

14.3 Housing ............................................................................... 26

14.4 Device Return and Environmentally Compatible Disposal ......... 26

15 Multimeter Messages ..............................................26

16 Accessories ............................................................. 27

17 Repair and Replacement Parts Service,

Calibration Center* and Rental Instrument Service . 27

18 Guarantee ................................................................28

19 Product Support ....................................................... 28

20 Recalibration ............................................................ 28

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