Elcometer 266 User Manual
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Elcometer 266 User Manual

Dc holiday detector
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User Guide
Elcometer 266
DC Holiday Detector
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  • Page 1 User Guide Elcometer 266 DC Holiday Detector www.elcometer.com...

  • Page 2: Table Of Contents

    Weight: Base Unit (including battery pack): 1.2kg (2.7lb); Handle: 0.6kg (1.3lb) Base Unit, Handle & Connecting Cable: 2kg (4.4lb) A Material Safety Data Sheet for the Elcometer 266 Battery Pack is available to download via our website: http://www.elcometer.com/images/stories/MSDS/elcometer_266_280_battery_pack.pdf © Elcometer Limited 2010-2016. All rights reserved. No part of this document may be reproduced, transmitted,...

  • Page 3: Working Safely

    Due to its method of operation, the Elcometer 266 will generate broad band RF emissions when a spark is produced at the probe, i.e., when a flaw in the coating is located. These emissions may interfere with the operation of sensitive electronic apparatus in the vicinity.
  • Page 4 500μm (0.008” to 0.020”), ensure that an appropriately low voltage is applied (to prevent damage to the coating), or use the wet sponge method (using the Elcometer 270).  DO bond the work piece to a ground potential to minimise the potential for build up of static charge, see Section 11 ‘Static Electricity’...

  • Page 5: Gauge Overview

    2 GAUGE OVERVIEW The Elcometer 266 detects flaws in protective coatings up to 7mm (25mils) thick and is ideal for inspecting coatings on pipelines and other protective coatings. The coating under test can be electrically non-conductive or partially conductive (such as coatings which contain metallic or carbon particles).

  • Page 6: Box Contents

    Earth Signal Return Cable Connection High Voltage Probe Handle Connecting Cable High Voltage Probe Handle Probe Accessory Connection 3 BOX CONTENTS Elcometer 266 DC Holiday Detector  Earth Signal Return Lead, 10m (32 ft)  Connecting Cable for High Voltage Probe Handle ...

  • Page 7: Using The Gauge

    4 USING THE GAUGE 4.1 THE CONTROLS The Elcometer 266 is operated using the keypad on the instrument and the button on the high voltage probe handle. Scroll up / down through menus and lists of values Increases / Decreases Values...

  • Page 8: Getting Started

    Connect the lead from the charger into the socket marked ‘Charger Input’ behind the interface access cover. The Elcometer 266 is not designed to operate using dry cell batteries. en-7 www.elcometer.com...
  • Page 9 Battery Charge / Action Required 70% to 100% 40% to 70% 20% to 40% 10% to 20% - charging recommended <10%, instrument beeps every 10 seconds and symbol ashes - immediate charging required 5 loud beeps, instrument switches off automatically www.elcometer.com en-8...
  • Page 10 Press the MENU key to display the main menu. When the instrument is switched on for the first time after despatch from the  Elcometer factory, the language selection screen will be displayed. Proceed to Step 2.   Select your language using the keys.
  • Page 11 Press SEL to toggle the sensitivity (current) lock on or off, see LOCKED Section 5.6 ‘Voltage and Sensitivity Locks’ on page en-11. 5.5 CLICKS, BEEPS, ALARMS AND LIGHTS The Elcometer 266 emits a range of sounds and lights whilst in use, see Table 2 below. TABLE 2 Indicates...

  • Page 12: High Voltage Probe Handle

    The Elcometer 266 is not supplied with a probe handle, these must be ordered separately. Description...
  • Page 13 If the grip is released whilst the probe is at high voltage: the voltage at the probe will drop to zero immediately,  the instrument will emit a high pitched beep, and  the red light on the handle will flash.  www.elcometer.com en-12...
  • Page 14 Note: The DC30S Continuous Voltage Probe Handle is compatible with Elcometer 266 instruments with serial numbers ‘SC16119’ onwards. The software in older instruments must be updated by Elcometer or your local Elcometer distributor to recognise the new DC30S handle. en-13...

  • Page 15: Preparing For Test

    Please read the information in Section 1 ‘Working Safely’ on page en-2 before using the equipment. If in doubt, contact Elcometer or your local Elcometer supplier. 7.1 CONNECT THE CABLES Connect the high voltage probe handle to the instrument using the grey curly cable (Figure 1).
  • Page 16 If the flaw is not detected, confirm that all the preceding steps have been undertaken correctly and check again. If the flaw is still not detected, contact Elcometer or your local Elcometer supplier for advice. en-15...

  • Page 17: Test Procedure

    After reattaching cables in the new test location and before you recommence testing, repeat the steps given in Sections 7.3, 7.4 and 7.5 on page en-15. The probe must always touch the surface. Gaps between the probe and the coating can result in genuine flaws not being detected. www.elcometer.com en-16...

  • Page 18: Setting The Probe Handle Voltage

    The probe handle voltage can be set automatically or manually. 9.1 AUTOMATICALLY SETTING THE VOLTAGE The Elcometer 266 includes a built-in Voltage Calculator which will determine and set the correct test voltage based upon the test standard and the thickness of coating you are testing.
  • Page 19  ‘Voltage and Sensitivity Locks’ on page en-11, a warning screen will be displayed; press UNLOCK to allow the voltage to be adjusted - the lock will re-engage automatically after the voltage has been set by the calculator. www.elcometer.com en-18...

  • Page 20: Setting The Sensitivity

    10 SETTING THE SENSITIVITY The sensitivity can be set automatically or manually. 10.1 AUTOMATICALLY SETTING THE SENSITIVITY When the Elcometer 266 is set to automatic sensitivity mode, the instrument measures the current returning via the earth signal return cable. If significant changes in the current are detected, the instrument analyses these changes - looking for the electrical ‘signature’...
  • Page 21 If the sensitivity has been locked, see Section  5.6 ‘Voltage and Sensitivity Locks’ on page en-11, a warning screen will be displayed; press UNLOCK to allow the current to be adjusted - the lock will re-engage automatically after the current has been set. www.elcometer.com en-20...

  • Page 22: Static Electricity

    It is recommended that the substrate of the item being tested is bonded to an earth potential, thus preventing any overall build-up of charge, which can otherwise remain on an isolated test piece for several minutes after testing has been completed. en-21 www.elcometer.com...

  • Page 23: Probe Accessory Selection

    In addition, long reach applications can be carried out using extension pieces that are suitable for use with all probe types. All these probe accessories are available from Elcometer or your local Elcometer supplier, see Section 16 ‘Spares & Accessories’ on page en-27 for details.

  • Page 24: The Second Hand Grip

    During normal use, the particles in this type of coating are not linked. However, when the coating is subjected to high voltages the material between the particles can break down. This results in the coating becoming conductive and the detector indicating the presence of a flaw. en-23 www.elcometer.com...
  • Page 25 The procedure is generally the same as that described in ‘Preparing For Test’ on page en-14 and ‘Test Procedure’ on page en-16, but the following points should be noted. Hammering a masonry nail, or similar conducting spike, into the concrete or cement makes the earth signal return contact. www.elcometer.com en-24...

  • Page 26: Error Messages

    High voltage probe handle Remove high voltage probe handle device error. and ret. If error persists, contact Elcometer . Or your local Elcometer supplier. en-25 www.elcometer.com...
  • Page 27 High voltage probe handle Return high voltage probe handle to connecting cable (curly Elcometer . cable) fault. Current leakage. Return to Elcometer for software upgrade. Handle not compatible. Remove high voltage probe handle and ret. If error persists, contact Elcometer .

  • Page 28: Spares & Accessories

    Add ‘C’ to the end of the part number for a probe handle supplied complete with calibration certificate. Note: The DC30S Continuous Voltage Probe Handle is compatible with Elcometer 266 instruments with serial numbers ‘SC16119’ onwards. The software in older instruments must be updated by Elcometer or your local Elcometer distributor to recognise the new DC30S handle.
  • Page 29 AP, APS, AP/S1, AP/S2, AP/W, T99920084 10/20, 14/20, 10, 20 & 20S P20, P40, P60, 780, 785 & 790 T99920083 PHD 1-20 & PHD 2-40 T99920252 Elcometer 266 with old Elcometer Accessories T99920082 16.6 BAND BRUSH PROBES Description Part Number Band Brush Probe T99919975 Band Brush Probe;...
  • Page 30 Please order the holder separately. A wire brush support handle is also available - ideal for two handed use or second person when using larger diameter wire brushes. Description Part Number ‘C-Type’ Wire Brush Holder T99922752 ‘C-Type’ Wire Brush Support Handle T99922907 en-29 www.elcometer.com...
  • Page 31 The 19mm (0.75") diameter phosphor bronze springs are almost three times lighter than the 34mm (1.33") diameter stainless steel springs. Description Part Number Phosphor Bronze Rolling Spring Holder T99920086 Stainless Steel Rolling Spring Holder T99922746 www.elcometer.com en-30...
  • Page 32 T99920438-80A T99922744-80A T99920438-90A T99922744-90A 10.4 T99920438-100A T99922744-100A 10.0 10.4 11.4 T99920438-110A T99922744-110A 11.0 11.4 12.6 T99920438-120A T99922744-120A 12.0 12.6 13.8 T99920438-140A T99922744-140A 13.8 14.8 14.0 T99920438-140B T99922744-140B 14.8 15.7 T99920438-160A T99922744-160A 15.7 17.1 16.0 T99920438-160B T99922744-160B 17.1 17.7 en-31 www.elcometer.com...

  • Page 33: Warranty Statement

    53.9 56.1 17 WARRANTY STATEMENT The Elcometer 266 DC Holiday Detector and High Voltage Probe Handles are supplied with a 12 month warranty against manufacturing defects, excluding contamination and wear. The warranty can be extended to two years within 60 days of purchase via www.elcometer.com.

  • Page 34: Technical Specification

    Battery packs must be disposed of carefully to avoid environmental contamination. Please consult your local environmental authority for information on disposal in your region. Do not dispose of the battery pack in a fire. Typical battery life with or without backlight. en-33 www.elcometer.com...

  • Page 35: Care & Maintenance

    United Kingdom All other trademarks acknowledged. The Elcometer 266 DC Holiday Detector is packed in cardboard and plastic packaging. Please ensure that this packaging is disposed of in an environmentally sensitive manner. Consult your local Environmental Authority for further guidance.

  • Page 36: Appendix A: Standards

    Testing to these standards is still possible however, by setting the test voltage manually - see Section 9.2 ‘Manually Setting the Voltage’ on page en-18. The Elcometer 266 DC Holiday Detector can be used in accordance with the following list of standards and test methods: Standard or...
  • Page 37 Assessment of porosity in a dry lm JIS G-3491 1993 Asphalt coatings on water Inside walls: 8-10 kV line pipes Dipped Coatings: 6-7 kV Outside walls: 10-12 kV † Elcometer 266 Voltage Setting: VC = Voltage Calculator; M = Manual www.elcometer.com en-36...
  • Page 38 A copy of the relevant standard or method must be obtained from the source to ensure that it is the current document. † Elcometer 266 Voltage Setting: VC = Voltage Calculator; M = Manual en-37 www.elcometer.com...

  • Page 39: Appendix B: Calculating The Correct Test Voltage

    APPENDIX B: CALCULATING THE CORRECT TEST VOLTAGE The Elcometer 266 includes a built-in voltage calculator which will determine and set the correct test voltage based upon the test standard and the thickness of coating you are testing, see Section 9.1 ‘Automatically Setting the Voltage’...
  • Page 40 If the coating thickness is known, or can be measured, the lower limit value can be read from the graph given above, using the line marked AIR. For instance, if the coating thickness is 1.0mm then the lower limit is approximately 4.5 kV. en-39 www.elcometer.com...
  • Page 41 Table 1, Table 2 and Table 3). See also Section 9.1 ‘Automatically Setting the Voltage’ on page en-17 and Appendix A ‘Standards’ on page en-35. Once the lower and upper voltage limits have been established, set the voltage approximately halfway between the two values. www.elcometer.com en-40...
  • Page 42 0.40 to 0.50 16 – 20 0.53 to 1.00 21 – 40 1.01 to 1.39 41 – 55 1.42 to 2.00 56 – 80 2.06 to 3.18 81 – 125 10.0 3.20 to 3.43 126 – 135 15.0 en-41 www.elcometer.com...
  • Page 43 en-42...
  • Page 44 TMA-0419 Issue 12 - Text with cover 20030...

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