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Tests: Resistance mode

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DLRO2 and DLRO2X

33

7.2.1  For a unidirectional test:

As the test starts, continuity indicators will fade.

Dashes or previous value will flash on the main display until 
result appears.

On the secondary display dashes or previous results will flash 
until a new result is ready.

The soft keys will not operate during this test.

7.2.2  For a bidirectional test:

As the test starts, continuity indicators will fade.

The left arrow with dashes will flash first until a result appears, 
then the right arrow with dashes will flash until  
a result appears.

Dashes or previous value will flash on the main display until 
average of the two results appears.

On the secondary display dashes or previous results will flash 
until a new result is ready.

The soft keys will not operate during this test.

7.2.3  After the test:

For a single test the result is displayed constant in the  
main field.

Click SAVE now if you wish to record your results.

To perform another test press the TEST button (continuity 
indicators must be green).

NOTE : 

Soft key 1 toggles continuous / single test. 

Soft keys 2 / 3 cycles through current ratings; default is 2 A, 
selectable 1 A, 100 mA, 10 mA, 1 mA. 
Soft key 4 is only active in bidirectional resistance mode and 
toggles between ‘Display previous 2 results’ / ‘Forward and 
reverse direction’.

TICK button sets new reference value.

For a continuous test results in the secondary screen will keep 
updating. Tests will be performed back to back. 
‘Two previous results’ in the secondary screen, left is previous 
result and right is the result before that.

To stop the test press the TEST button.

If continuity is maintained, pressing the TEST button will  
start a new test

Содержание 1012-280

Страница 1: ...DLRO2 and DLRO2X Ducter Low Resistance Ohmmeter 2 A User Guide...

Страница 2: ...ecification of its products from time to time without notice Although every effort is made to ensure the accuracy of the information contained within this document it is not warranted or represented b...

Страница 3: ...Limited described in this user guide is in compliance with Directives 2014 30 EU and 2014 35 EU where they apply The full text of Megger Instruments EU declarations of conformity are available at the...

Страница 4: ...ument Layout DLRO2 13 3 2 Instrument Rotary Control DLRO2 14 3 3 Instrument Rotary Control DLRO2X 14 3 4 Instrument Display 16 3 5 Leads power and USB connections 17 3 6 The Difference Meter 17 4 Sett...

Страница 5: ...idirectional test 33 7 2 3 After the test 33 8 Tests Long leads mode 34 8 1 Long leads mode auto and manual start 34 8 1 1 For manual mode 35 8 1 2 For auto mode 35 9 Noise rejection mode DLRO2X only...

Страница 6: ...placement 46 12 4 1 Replace batteries and remove isolation tab 46 12 5 Restore Factory Settings 47 13 Specifications 48 14 Accessories and Equipment 50 14 1 Included Accessories 50 14 2 Optional Acces...

Страница 7: ...ge 10 NOTE This user guide includes instructions for all DLRO2 variants Some facilities may not be available on your model of this equipment 1 2 Features Noise rejection mode DLRO2X only Refer to 9 Te...

Страница 8: ...istance between wing tip to ground connection at base using long test leads Optional long cable reel test leads are available Rail Tram and Underground rolling stock and infrastructure track high curr...

Страница 9: ...Occasionally an information bulletin may be issued via the Megger web site This may concern new accessories new usage instructions or a software update Please occasionally check on the Megger web sit...

Страница 10: ...e reference WARNING This instrument must be operated only by suitably trained and competent people Protection provided by the instrument may be impaired if it is not used in a manner specified by the...

Страница 11: ...f the test leads before use The safe maximum limit of a measurement connection is that of the lowest rated component in the measurement circuit formed by the instrument test leads and any accessories...

Страница 12: ...the display Icon Warning Description External Voltage Warning If an external voltage is applied between the terminals and the instrument is set to ON the external voltage warning will flash on the di...

Страница 13: ...0 12 Item Description Item Description 1 External electrical connections Refer to 3 5 Leads power and USB connections on page 16 10 Attachment point for strap 2 Display 11 Battery cover 3 Soft keys mu...

Страница 14: ...ions 1 Inductive mode 4 Long leads mode 2 Normal resistance mode 5 Settings mode grey 3 Off position 3 3 Instrument Rotary Controls DLRO2X 3 2 5 7 4 1 6 Item Description Item Description Rotary switch...

Страница 15: ...s functions dependant on rotary selection switch position 2 Operating mode 12 Secondary field 3 Primary field 13 C continuity indicator 4 Latest result 14 Forward measurement result 5 Battery conditio...

Страница 16: ...sts Noise rejection mode DLRO2X on page 37 3 5 Leads power and USB connections Slider to front Slider to back 1 7 2 3 1 7 4 6 5 Item Description Item Description 1 Rear attachment point for strap 4 Sl...

Страница 17: ...ting pressing the TICK button sets the latest reading as the reference reading and cancels all other readings recorded on display including those on the Difference Meter and the secondary field 3 2 1...

Страница 18: ...he first 1000 in this case showing an increase The 1000 difference shows clearly that something isn t right Check the leads connections unit under test etc NOTE The units on the main display have chan...

Страница 19: ...ery Replacement on page 46 4 2 2 Turn the instrument on and off 1 Turn the instrument ON by rotating the rotary switch to the required operating mode away from the OFF position 2 Turn the instrument O...

Страница 20: ...Lower Test Limit and click the TICK button to select 2 Use the soft keys 1 or 4 to move the selector left or right to choose the Units of measurement and the limit required Use the up and down arrows...

Страница 21: ...isual and audible warning will appear on the display This can be set to three settings 1 Off shown 2 Visual warning 3 Visual and audible warning When the visual warning is activated an eye symbol will...

Страница 22: ...used to save results or a new one can be created 2 To create a new Asset ID click the key 3 Use the soft keys to move the cursor around the keyboard and click the TICK button to select 4 Press SAVE a...

Страница 23: ...1 To save your test results when the test has completed press the SAVE button 2 On the Data storage page use the soft keys to select the Asset ID that you require the results to be added to and click...

Страница 24: ...set ID 2 Before starting the test press the SAVE button The Auto Save icon will appear at the top of the screen 3 Run the test and the results will automatically be saved to the previously selected As...

Страница 25: ...the Asset ID that you want to open and click the TICK button 2 Select the date of the test results that you want to review 3 Select the type of test from the list 4 Choose the time that the test was...

Страница 26: ...d before any stored charge has been discharged at the end of the test Failure to comply with these instructions might result in an arc being produced which might be dangerous for the instrument and th...

Страница 27: ...the TEST button The animated chevron sequence will be displayed during the pre charge phase of the measurement to be replaced by resistance and current values updating as the instrument auto ranges Re...

Страница 28: ...unit under test C and P indicators show red background with for no continuity or green background with for good continuity Proceed when both show The continuity indicators are active during the test a...

Страница 29: ...stable measurement is achieved at which point the instrument will automatically stop the test The test can also be stopped at any time by pressing the TEST button After the test the Difference Meter r...

Страница 30: ...position NOTE To AUTO SAVE results click the SAVE button now Refer to 5 Data storage DLRO2X only on page 22 OR Resistance test screen appears Auto start Bidirectional Resistance Mode or Auto start Un...

Страница 31: ...and P continuity indicators will be grey if continuity was maintained This indicates the C or P lead must be disconnected and reconnected to restart the test Note Test button will start another test S...

Страница 32: ...ey 1 toggles continuous single test Soft keys 2 3 cycles through current ratings default is 2 A selectable 1 A 100 mA 10 mA 1 mA Soft key 4 is only active in bidirectional resistance mode and toggles...

Страница 33: ...l a new result is ready The soft keys will not operate during this test 7 2 3 After the test For a single test the result is displayed constant in the main field Click SAVE now if you wish to record y...

Страница 34: ...e set to single measurement 1 A with previous 2 results displayed 8 1 Long leads mode auto and manual start 1 Turn rotary switch to select the long leads mode either MANUAL or AUTO position NOTE To AU...

Страница 35: ...r previous results will flash until a new result is ready For a single test the result is displayed constant in the main field No latest results are displayed in the secondary field unless multiple te...

Страница 36: ...ld No latest results are displayed in the secondary field unless multiple tests have been made in this sequence NOTE The TICK button will clear the previous results in the secondary fields Two previou...

Страница 37: ...inimum current is 1 A Restricted to single tests In high noise mode all soft keys are inactive The test is pre set to single measurement 1 A with previous 2 results displayed 9 1 Confidence Meter 1 If...

Страница 38: ...ll read 100 The test leads can be disconnected and the results can be saved by clicking the SAVE button When confidence reaches 100 the measurement will stop and the instrument will apply a discharge...

Страница 39: ...en voltage goes 4 3000 Logged only errors No user intervention 10 2 On screen error messages 10 2 1 Error screen A 1 Error code 2 Error text where applicable explains what went wrong Remove the messag...

Страница 40: ...ween yellow and white using the tick button Backlight Timer Use soft keys 2 and 3 to select from off up to 60 seconds default is 20 seconds Battery Technology Toggle between NiMH and alkaline using th...

Страница 41: ...distinguish between green and red but can between blue and red 1 The Pass Colour can be changed to Blue which is easier to read by colour blind users Select Pass Colour on the Settings menu and press...

Страница 42: ...mer Set to either 0 20 secs or 60 secs before backlight dims Sleep Timer Press the tick button and navigate using soft keys 2 and 3 Use the tick button to set 11 4 Language settings Switch the rotary...

Страница 43: ...the DLRO2 with the firmware update file in the root directory The DLRO2 will automatically update when the instrument is turned on if a firmware update file is found on the USB flash drive 1 Plug the...

Страница 44: ...e 28 To help maintain the health reliability and longevity of the installed batteries Ensure if using rechargeable batteries they are fully charged before use charger supplied Store batteries in a coo...

Страница 45: ...rechargeable When charging the DLRO2 while the instrument is OFF an animated battery will display across the screen to show charging is taking place Once the battery is fully charged the screen will d...

Страница 46: ...the DLRO2 for the first time remove and discard the battery isolation tab 3 1 Remove the test leads and ensure the DLRO2 is switched off 2 Slacken one captive cross point screw 1 which is centred at...

Страница 47: ...en created WARNING Resetting the device will DELETE all stored results Back up all results to USB stick and remove the USB stick before continuing to reset the unit 1 Hold the TICK button for 3 second...

Страница 48: ...stance of inductive loads Overall resistance range 1 2000 Max resistance across C terminals 2 A with up to 1 1 total resistance and 1 A with up to 3 2 total resistance Basic accuracy Bi directional te...

Страница 49: ...DATA STORAGE Total maximum test measurement records 8 million Maximum Asset ID references 256 Maximum test measurement records per asset per day 256 Note continuous tests will contain multiple test m...

Страница 50: ...1012 068 Soft pouch 1012 063 14 2 Optional Accessories Item Order No Test leads Set of 4 Kelvin probe pins Replacement probe tips 1012 064 4 right angled adaptors to allow hook terminated E g KC100 le...

Страница 51: ...e that you have the most recent version available Visit megger com powerdb The latest edition will be at the top Click the download button beside the file This will ask if you want to open or save the...

Страница 52: ...s shown above The following information is to be provided to enable the Service Department to prepare in advance for receipt of your instrument and to provide the best possible service to you Model fo...

Страница 53: ...company or distributor or visit your local Megger website 16 2 Battery disposal The crossed out wheeled bin symbol placed on a battery is a reminder not to dispose of batteries with general waste when...

Страница 54: ...1 USA only T 1 214 333 3201 F 1 214 331 7399 E USsales megger com Megger AB Rinkebyv gen 19 Box 724 SE 182 17 DANDERYD T 46 08 510 195 00 E seinfo megger com Megger USA Fort Collins 4812 McMurry Avenu...

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