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MI 2126 Earth 2/3                                                                        

Instrument description 

 

Legend: 

Serial number. 

Information label. 

Battery cover. 

Screw to fix battery cover. 

Battery holder. 

 
 

2.5  Instrument messages 

 
Messages  are  generated  on  the 

LCD

  using  special  symbols  and  numeric  segment 

combinations. The following figure shows all of the possible display segments, and the 
table below describes the messages. 
 
 

Unit

 

Figure 4. Display segments 

 
Description of possible display messages: 

o.r. 

Result out of range. 

 and 20 V

 

External voltage is higher than approx. 20 V

eff

 and RC 

Current spike resistance is too high. 

 

(push key 

DISP

)

 

 and RP 

Potential spike resistance is too high. 

 and 

 

Noise voltage is higher than approx. 3 V. 

Fr 

General settings – selection of frequency (50 Hz or 60 Hz). 

┌┐

, t 

  

 

General settings – selection of measuring algoritm. 

BAT 

Batteries are too weak – replace the batteries. 

  

Table 1. Messages 

 

Caution:

 if result of measurement is higher than 999 

, ohm character is not displayed. 

 

Summary of Contents for Earth 2/3

Page 1: ...Earth 2 3 MI 2126 Instruction Manual Version 1 0 Code No 20 750 190...

Page 2: ...el metrel si Mark on your equipment certifies that this equipment meets the requirements of the EU European Union concerning safety and interference causing equipment regulations 2005 METREL No part o...

Page 3: ...ctor panel 7 2 4 Base 7 2 5 Instrument messages 8 3 Using instrument 9 3 1 Performing 3 wire measurement 9 3 2 Performing 2 wire measurement 11 3 3 General settings 14 4 Maintenance 16 4 1 Batteries 1...

Page 4: ...necessary for carrying out the tests 1 2 Warnings In order to ensure operator s safety while carrying out various measurements and tests using the Earth 2 3 as well as to keep the test equipment undam...

Page 5: ...ipment for measurement control and laboratory use EMC requirements Class B Hand held equipment used in controlled EM environments Safety LVD EN 61010 1 Safety requirements for electrical equipment for...

Page 6: ...which includes the operator s panel and connectors 2 2 Front panel The front panel consists of a custom LCD and a keyboard see the figure below 1 Earth 2 3 MI 2126 TEST DISP 2 3 4 Figure 1 LCD display...

Page 7: ...r panel Use original test accessories only Never connect instrument to high voltage H S E 1 2 3 Figure 2 Connector panel Legend 1 Blue test terminal H 2 Red test terminal S 3 Black test terminal E 2 4...

Page 8: ...ges Unit Figure 4 Display segments Description of possible display messages o r Result out of range and 20 V External voltage is higher than approx 20 Veff and RC Current spike resistance is too high...

Page 9: ...be blue H is at least 5 times the length of earthing electrode rod or the length of the band electrode see Figure 5 If measuring the total earth resistance of a complex earthing system the required di...

Page 10: ...s REarthtot RE1 RE2 RE3 RE4 R E1 E4 Separate earthing resistances R P Potential spike resistance R C Current spike resistance R Earthtot Total earth resistance of tested earthing system Step 2 Press t...

Page 11: ...displayed instead marked with symbol If a noise voltage higher than approx 3 V is present between blue H and black E or red S test terminals symbols and will be displayed indicating that the test res...

Page 12: ...MI 2126 Earth 2 3 Using instrument 12 Figure 8 Two wire test method dependent objects Figure 9 Two wire test method independent objects...

Page 13: ...leads are not connected to the phase line REarthtot RA RO RX R x Earth resistance R A Resistance of protective conductor R O Resistance of earthing electrode R Earthtot Total earth resistance of teste...

Page 14: ...hat the test result may not be correct The instrument does not indicate if a DC voltage is present at the input terminals DC voltage have no influence on the measurement If the resistance of the curre...

Page 15: ...cting algorithm DISP Select measurement algorithm TEST Confirmation of measuring algorithm The instrument is ready for measurements Notes In general it is recommended to use normal measuring algorithm...

Page 16: ...ts may be incorrect The instrument is switched off automatically when battery voltage drops bellow the limit BAT is displayed for a few seconds before switching off Nominal power supply voltage is 6 V...

Page 17: ...re 14 for fuse location Warning Turn power off and disconnect any measurement accessory connected to the instrument before opening battery cover Replace blown fuse with original type only M0 8A otherw...

Page 18: ...hichever is lower indicator only Additional probe resistance error at RCmax or RPmax 10 of m r 3 digits Additional error at 3 V voltage noise 50 Hz 60 Hz 5 of reading 10 digits Automatic noise voltage...

Page 19: ...ximately 10 min without activity Visual warnings yes Dimensions w h d 280 x 70 x 80 mm Weight without accessories and batteries 410 g Display custom LCD Protection classification double insulation Deg...

Page 20: ...arth 2 3 Standard and optional accessories 20 6 Standard and optional accessories See attached sheet to compare received set of accessories with listed one The optional accessories may be supplied upo...

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