AEMC 6470-b User Manual
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AEMC 6470-b User Manual

Digital ground resistance and soil resistivity tester
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6470-B
DIGITAL GROUND RESISTANCE
AND SOIL RESISTIVITY TESTER
E N G L I S H
User Manual
GlobalTestSupply
www.
.com
uality Products Online at:
sales@GlobalTestSupp

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  • Page 1 6470-B DIGITAL GROUND RESISTANCE  AND SOIL RESISTIVITY TESTER E N G L I S H User Manual GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...
  • Page 2 GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...
  • Page 3 Statement of Compliance Chauvin Arnoux , Inc. d.b.a. AEMC Instruments ® ® certifies that this instrument has been calibrated using standards and instruments traceable to international standards. We guarantee that at the time of shipping your instrument has met its published specifications.
  • Page 4 READ CAREFULLY BEFORE USING FOR THE FIRST TIME Your instrument is equipped with a NiMH battery. This technology offers several advantages: • Long battery charge life for a limited volume and weight. • Possibility of quickly recharging your battery. • Significantly reduced memory effect: you can recharge your battery even if it is not fully discharged.

  • Page 5: Table Of Contents

    Mechanical ..................21 Environmental ..................21 Safety ....................21 4. OPERATION ..................22 General Operating Instructions ............22 4.1.1 Automatic Mode ..............22 4.1.2 Manual (Expert) Mode ............22 Instrument Configuration (SET-UP mode) .........23 Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...
  • Page 6 Erasing All Measurements ............45 7.3.2 Erasing Selective Measurements .........45 DATAVIEW SOFTWARE ............... 47 ® Installing DataView ® ........................... 47 Connecting the Model 6470-B to your Computer .......51 Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...
  • Page 7 10.1.3 Misconnection ..............65 10.1.4 Out of Limits Indicators ............66 10.1.5 Error Messages ..............67 GLOSSARY OF TERMS ................. 68 Basic Terminologies ..................68 Glossary ......................69 Limited Warranty ..................73 Warranty Repairs ..................73 Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 8: Introduction

    (thunderstorms). It is up to the operator to decide whether to continue or postpone measurements in these situations. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 9: International Electrical Symbols

    ® workbook and user manual. Ground Resistance Tester Model 6470-B Kit (150 ft) ....Cat. #2135.02 Includes meter, two carrying bags, two 150 ft color-coded leads on spools (red/blue), one 30 ft lead (green), two 5 ft color-coded leads (red/blue), 110/240V power adapter with US power...

  • Page 10: Kits, Accessories And Replacement Parts

    Ground Resistance Tester Model 6470-B Kit (300 ft) ....Cat. #2135.03 Includes meter, two carrying bags, two 300 ft color-coded leads on spools (red/blue), two 100 ft color-coded leads (hand-tied, green/black), two 5 ft color-coded leads (red/blue), 110/240V power adapter with US power cord, optical USB cable, four T-shaped auxiliary ground...

  • Page 11: Product Features

    The Model 6470-B is CAT IV rated to 50V and is over voltage protected to more than 250V against accidental connection to live circuits. The voltage is also dis- played on screen.

  • Page 12: Key Features

    • Grounding standards IEC 61557 parts 4 and 5 compliant • Includes DataView software for data storage, real-time display, analysis, re- ® port generation and system configuration Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 13: Control Features

    Input terminal E (X) - grounding electrode under test Six program/function buttons (see §2.5) Optical interface connector for connection to a computer Range selection switch Start/Stop button Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 14: Display

    2.4 Display The Model 6470-B’s display is a custom 256 segment multi-line backlit LCD. External voltages will be displayed only on the small displays (A2 and A3) without the view of the main display (A1). This helps to rapidly recognize that these are measurements of external voltages.
  • Page 15 In AUTO mode, the measurement frequency is automatically adjusted to the best available disturbance voltage rejection. Symbol not used in Model 6470-B Indicates the 2-Wire DC resistance; calculates the offset of the cable resistance into the result (5Ω max for offset value)

  • Page 16: Button Functions

    Hz/OPTIONS: Enables configuration of measurement functions. z/OPTIONS/ DISTANCE: Available for soil resistivity and V potential measurements. It DISTANCE allows the setting of values of distances used for Rho (ρ) calculation. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 17: Specifications

    Voltages of more than 75Vrms lead to error message 31 (excessive external voltage) or 32 (voltage measurement overrange). If terminals H (Z) and E (X) are put into contact with the line voltage, the protection fuse will blow. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 18: Dc Resistance Measurements

    1.00 to 10.0 to Range 9.99Ω 99.9Ω 999Ω 9.99kΩ 99.9kΩ Resolution 0.01Ω 0.1Ω 1Ω 10Ω 100Ω Intrinsic error ± (2% + 2cts) Operating error ± (5% + 3cts) Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 19: Ac Earth/Ground Resistance Measurements

    The START button must be pressed for more than 2 s. For frequencies between 41 and 256Hz, the resistance of the auxiliary earth electrodes is measured at the test frequency set. At higher frequencies the resistance is measured at 256Hz. Ground Resistance Tester Model 6470-B GlobalTestSupply www.

  • Page 20: Soil Resistivity Measurement Ρ

    Test Frequency: Selectable from 41 to 128Hz (see table in § 6.2) Short Circuit Current: > 200mA Noise Suppression: > 80 dB for frequencies 20% or more above or below the test frequency Max. Overload: 250Vrms Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...
  • Page 21 The START button must be pressed for more than 2s. For frequencies between 41 and 128Hz, the resistance of the auxiliary earth electrodes is measured at the test frequency set. At higher frequencies the resistance is measured at 128Hz. Ground Resistance Tester Model 6470-B GlobalTestSupply www.

  • Page 22: Data Storage

    1500 (1): Measurements in automatic mode at 25-s intervals (2): With R = 1Ω (3): With RH + RE = 100Ω (4): With RH + RS-ES = 100Ω Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 23: Mechanical

    Electrical safety according to EN 61010-1 (Ed. 2 of 2001) Measurement according to EN 61557 (Ed. 2 of 2007) parts 1, 4 and 5. CAT IV, 50V Pollution Degree 2 *Specifications are subject to change without notice Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 24: Operation

    Understanding Ground Resistance Testing Workbook CD that was included with the instrument. 4.1 General Operating Instructions The Model 6470-B has two operating modes: • Automatic mode for routine applications. • Manual (Expert) mode in which the user can change the parameters of the measurement functions.

  • Page 25: Instrument Configuration (Set-Up Mode)

    • To record the information into memory, use the MEM button (see § 7). 4.2 Instrument Configuration (SET-UP mode) To configure the Model 6470-B parameters, turn the rotary switch to SET-UP: • All the segments on the display are activated for 1 second and then the “PUSH button”...

  • Page 26: Automatic Mode

    WARNING: Before performing the resistance test, verify that the sample under test is not energized. Set the switch to Connect the resistance to terminals H (Z) and E (X). Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 27: Lead Compensation Measurement

    3. The 6470-B makes a measurement with a positive current (R+), then reverses the direction of the current and makes another measurement with negative (R-). ± ± Ω Ω (R+) + (R-) ALARM ALARM Ω Ω Ω Ω AUTO AUTO To display the measurement parameters, press DISPLAY several times.

  • Page 28: Alarm Function

    Choose a low (<) or ON or OFF type of alarm high (>) alarm Set the value of the alarm Complete the adjustment between 1 and 999Ω of the alarm setting Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 29: Resistance Measurement Mω (4-Wire)

    Hz/OPTIONS again WARNING: Before performing the resistance test, verify that the sample under test is not energized. Set the switch to Connect the resistance to all 4 terminals. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 30: Earth/Ground Measurement (3-Pole)

    A - 8 to 10 times rod depth In order to avoid electromagnetic interference, it is best to unwind the full length of each cable from the reel, to keep the cables as far apart as possible on the ground, Ground Resistance Tester Model 6470-B GlobalTestSupply www.
  • Page 31 AUTO AUTO To display the measurement parameters, press DISPLAY several times. The device displays the following parameters: , U-Act (U and its frequency, U and its frequency). Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 32: Full Method

    % H - E Take the average of the 3 or 4 readings on the R40 + R50 + R60 + R70 plateau to obtain the earth electrode resistance. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 33: Recommendations For A Reliable Measurement

    (for example, rotated 90° from the first alignment). H (Z) S (Y) H (Z) S (Y) E (X) Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 34: Earth/Ground Measurement (4-Pole)

    H (Z) and S (Y); disconnect the earth strap from the rod under test, then connect terminals E (X) and ES (Xv) to the earth electrode to be tested. Start the measurement by pressing the START/STOP button. Ω AUTO Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...
  • Page 35 Ω > 2s kΩ kΩ AUTO We recommend repeating the measurement with the auxiliary electrodes placed at a different distance and in another direction (see § 5.4.3). Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 36: Soil Resistivity Measurements ( Ρ Position)

    DC soundings based on DC soundings will be limited to simple, will be limited to simple, horizontal; layered horizontal; layered structures structures. Source: DC Resistivity - T. Boyd Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 37: Changing The Measurement Method

    ρ remains S-ES indeterminate. Set the switch to Press the 2nd button, then the DISTANCE button. The "hundredths" will blink. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 38: Wenner Method

    (cables, rails, fences, etc.). Ground Resistance Tester Model 6470-B GlobalTestSupply www.

  • Page 39: Schlumberger Method

    Drive the electrodes to a depth p of not more than 1/20 of d. Connect the cables to the electrodes, then to terminals H (Z), S (Y), ES (Xv), and E (X). Program the distance into the instrument as described in § 5.6.3. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...
  • Page 40 START/STOP button. and R , then R and R will be displayed. P-ES ρ ρ Ω Ω > 2s kΩ kΩ kΩ kΩ AUTO AUTO Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 41: Manual Mode

    • Press the Hz/OPTIONS button, then press it again to make the output volt- age (Uout) blink. • Use the ► button to switch to 16 or 32V, then press Hz/OPTIONS again. This setting is retained when the unit is turned off. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 42: Measurement Frequency Selection

    • POS on H and DC+ blinks  neg on H and DC- (reversal of polarity at terminal H) In MANUAL mode the tester does not reverse polarity automatically during the measurement; however, the polarity can be reversed during the measurement by pressing the Hz/OPTIONS button. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 43: Continuity Test

    This measurement calls for making and storing three intermediate measurements (at the same frequency). It is available only in MANUAL mode. Connection diagram: Measurement # 3 Earth 1 Earth 2 Measurement #1 Measurement #2 Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...
  • Page 44 To display all of the measurement parameters, press the MR button. • • To scroll through all of the measurements, use the ► and ▲ buttons. then Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 45: 4-Pole Earth/Ground Measurements

    In the manual mode, you can activate or deactivate the smoothing of the measure- ment results by pressing the 2nd + DISPLAY (SMOOTH) buttons. This smooth- ing displays an exponential mean value, a significant help with highly fluctuating values. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 46: Memory Function

    It will be possible to overwrite values already stored with new ones having the same distance d, or even to add new results having other values for the distance d provided that all of the other measurement parameters are identical. Ground Resistance Tester Model 6470-B GlobalTestSupply www.

  • Page 47: Recalling Measurements From Memory

    Object number blinking. • If you need to change the Object number, press the ▲ button until the desired number is displayed. Then press the ► button; the Test number now blinks. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...
  • Page 48 When a test is deleted, its Object/Test number is removed from memory. When you subsequently view stored tests, this number will be skipped. This Object/Test num- ber combination remains unavailable for storing tests until you completely erase memory, as instructed in Section 7.3.1. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 49: Dataview ® Software

    ® USB Flash Drive Install Insert the USB stick into an available USB port (wait for driver to be installed). If Autorun is enabled then an AutoPlay window should appear as shown. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...
  • Page 50 ® check for new software version releases. *Firmware Upgrades - Links to the online firmware updates to check for • new firmware version releases. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...
  • Page 51 12. In the Ready to Install the Program window, click on Install. 13. If the instrument selected for installation requires the use of a USB port, a warning box will appear, similar to Figure 8-3. Click OK. Ground Resistance Tester Model 6470-B GlobalTestSupply www.
  • Page 52 NOTE: If you connected your instrument to the computer before installing the software and drivers, you may need to use the Add/Remove Hardware utility to remove the instrument driver before repeating the process. Ground Resistance Tester Model 6470-B GlobalTestSupply www.

  • Page 53: Connecting The Model 6470-B To Your Computer

    8.2 Connecting the Model 6470-B to your Computer The Model 6470-B is supplied with an optically isolated USB interface cable required for connecting the instrument to the computer. This cable (Cat. #2135.41) is equipped with a USB type A on one end, and an optical connector on the other end.

  • Page 54: The Ground Tester Control Panel

    Real-time Measurement window that shows the measurement of each test performed in real-time (available only after a test has been performed). If the indicated items are not shown on the screen, select Restore Default Layout from the Window menu. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 55: Configuring The Instrument

    • Drop-down Indicators: Indicates the configuration available for each mea- surement range. To set the Terminal Label markings (e.g. E, ES, S, H or X, Sv, Y, Z), Numeric format, Measurement units and Rho units, go to Tools > Options. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 56: Dc Continuity Test

    For very low resistance measurement, a lead compensation value (see § 5.2.1) may be entered using the Change button. Input noise status at the input of the meter is always displayed. Figure 8-6 Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 57: 3-Pole Ground Resistance Test

    Selecting a sweep frequency test from the drop-down list will enable the sweep table selection. The Input Noise option allows the viewing of noise for Z or Y inputs. Figure 8-7 Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 58: 4-Pole Ground Resistance

    Selecting a sweep frequency test from the drop-down list will enable the sweep table selection. The Input Noise option allows the viewing of noise for Z or Y inputs. Figure 8-8 Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 59: 4-Pole Soil Resistivity

    Selecting a sweep frequency test from the drop-down list will bring you to the sweep table selection. The Input Noise option allows the viewing of noise for Z or Y inputs. Figure 8-9 Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 60: Tools Menu

    • Create DataView Report: Opens the newly created report in DataView ® • Create Spreadsheet. Allows you to save as either an .xls (Excel spread- sheet file) or .csv (comma delimited file). Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 61: Session Properties

    Only a single set of Custom parameters can be maintained (unlike the Operator and Site lists). You can also set defaults for session properties within the Ground Tester Control Panel by selecting File > Edit Session Properties. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 62: Exporting The Report To A Pdf File

    OK. • When the PDF is complete, the Save As dialog box will appear. • Choose a location to save the file and click Save. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 63: Maintenance

    To test this fuse, turn the switch to the mΩ position (2-Wire), connect measurement leads to terminals H (Z) and E (X) and start a measurement. If the unit refuses to operate and the symbol for terminal H (Z) blinks, the fuse must be replaced. Ground Resistance Tester Model 6470-B GlobalTestSupply www.

  • Page 64: Recharging The Battery

    If there is only one bar in the symbol or if there are no bars at all, the bat- tery should be recharged. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 65: Replacing The Battery

    Battery is too cold for a fast charge (< 0°C) - charging at a lower current bAtt FULL Battery is full - switch to trickle charging The 6470-B tester can also be recharged from a 12V car outlet with a special charging unit.
  • Page 66 (3 to 5 times). Discharge cycle (15 H) can be made with the instrument in MANUAL mode, DC 2-Pole (2-Pole) resistance measurement and a short-circuit between H (Z) and E (X) plugs. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...

  • Page 67: Troubleshooting

    H may also indicate that current I is too low. The flashing of termi- nal S may also indicate that resistance R is too high. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at:...

  • Page 68: Out Of Limits Indicators

    After the measurement has started there are indicators of when: • Values R and/or R are too high, • Measurement current I or I is too low, • The instability of the measurement is large. Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 69: Error Messages

    10.1.5 Error Messages When started up, the Model 6470-B device automatically performs a self-test. If a fault appears during this self-test or during a measurement, the device displays a message in the form Err XX. There are 3 categories of errors: • Harmless Errors 6, 7, 11 The message appears for approximately 1 second to inform the user.

  • Page 70: Glossary Of Terms

    An auxiliary electrode used for measuring the potential of the reference earth. The voltage, which is proportional to the resistance of the earth connection, is measured between this electrode and the earth electrode. Ground Resistance Tester Model 6470-B GlobalTestSupply www.

  • Page 71: Glossary

    : earth coupling coefficient R with earth R d, A : distances to be programmed to calculate resistivity according to the measuring method used mΩ : measurement of low resistance /continuity Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...
  • Page 72 : resistance of the stake connected to terminal S : resistance between stakes S and ES (used for resistivity S-ES measurement) Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...
  • Page 73 In both cases, this value on the display is associated with its frequency. In this case, the resistances of the 4 rods used for measurement are indicated by R P-ES Ground Resistance Tester Model 6470-B GlobalTestSupply www. .com...
  • Page 74 GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

  • Page 75: Limited Warranty

    Limited Warranty The Model 6470-B is warranted to the owner for a period of one year from the date of original purchase against defects in manufacture. This limited warranty is given by AEMC Instruments, not by the distributor from whom it was pur- ®...
  • Page 76 10/15 99-MAN 100298 v23 Chauvin Arnoux , Inc. d.b.a. AEMC Instruments ® ® GlobalTestSupply www. .com uality Products Online at: sales@GlobalTestSupp...

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