Elcometer 266 Manual de usuario
User Guide
Elcometer 266
DC Holiday Detector
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1
Working Safely
2
Gauge Overview
3
Box Contents
4
Using the Gauge
5
Getting Started
6
High Voltage Probe Handle
7
Preparing for Test
8
Test Procedure
9
Setting the Probe Handle Voltage
10
Setting the Sensitivity
11
Static Electricity
12
Probe Accessory Selection
13
The Second Hand Grip
14
Special Considerations
15
Error Messages
16
Spares & Accessories
17
Warranty Statement
18
Technical Specification
19
Care & Maintenance
20
Legal Notices & Regulatory Information
21
Appendix A: Standards
22
Appendix B: Calculating The Correct Test Voltage
For the avoidance of doubt, please refer to the original English language version.
Kit Dimensions: 520 x 370 x 125mm (20.5 x 14.5 x 5”)
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,
transcribed, stored (in a retrieval system or otherwise) or translated into any language, in any form or by any
means (electronic, mechanical, magnetic, optical, manual or otherwise) without the prior written permission of
Elcometer Limited.
CONTENTS
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1 WORKING SAFELY
The equipment should be used with extreme care.
Follow the instructions given in this user guide.
Caution - risk of electric shock.
The high voltage handle generates a voltage at the probe tip of up to
30 000 V. If the user makes contact with the probe, it is possible to
experience a mild electric shock. Due to the current being very low,
this is not normally dangerous, nevertheless Elcometer does not
advise using this product if you are fitted with a pacemaker.
An electrical spark indicates detection of a coating flaw; do not use
this instrument in hazardous situations and environments, e.g. an
explosive atmosphere.
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. In the
extreme case of a continuous spark of length 5mm, the magnitude of
emissions at a distance of 3m was found to be approximately
60 dBµV/m from 30 MHz to 1000 MHz. It is therefore recommended
that this equipment is not operated within 30m of known sensitive
electronic equipment and that the user does not deliberately generate
continuous sparks.
In order to avoid injury and damage, the following should always be
observed:
DO NOT use this instrument in hazardous situations and
environments, e.g. any combustible, flammable or other
atmosphere where an arc or spark may result in an
explosion.
DO NOT carry out tests close to moving machinery.
DO NOT use the instrument in a precarious, unstable or elevated
situation from which a fall may result, unless a suitable
safety harness is used.
DO NOT use this product if you are fitted with a pacemaker.
DO NOT use this product when it is raining, in a damp atmosphere
or if the unit is wet.
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1 WORKING SAFELY (continued)
DO read and understand these instructions before using the
equipment.
DO charge the battery before the first use of the equipment.
This will take approximately 4 hours, see Section 5.1
‘ ging the Battery Pack’ on page en-7.Char
DO consult the plant or safety officer before carrying out
the test procedure.
DO undertake testing well clear of other personnel.
DO work with an assistant to keep the test area clear and to
help with the testing procedure.
DO check that there are no solvents or other ignitable
materials from the coating activities left in the test area,
particularly in confined areas such as tanks.
DO switch the instrument off and disconnect the leads when
the work is finished and before leaving it unattended.
DO ensure that the earth signal return cable is connected
and extended before you switch on the instrument.
DO only use on coatings that are cured, thickness tested and
visually inspected and accepted.
DO only use on coatings having a dry film thickness of at
least 200μm (0.008"). For thicknesses between 200μm
and 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’ on page en-21.
DO take care when using this product with coatings that are
damp or wet.
DO dry the instrument if it gets wet, paying special attention
to the ribbing area.
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). The coating must be at least 200µm (0.008") thick, and
preferably over 500µm (0.020"), thick.
The underlying substrate must be an electrically conductive material
such as metal or concrete (concrete is reasonably conductive because
of its water content).
Typical flaws are pinholes (a very narrow hole running from the
coating surface to the substrate), holidays (small uncoated areas),
inclusions (objects trapped in the coating, e.g. grit from blast cleaning),
air bubbles, cracks and thin spots.
The Elcometer 266 probe handle generates a high DC voltage which
is applied to the surface of the coating via a probe. An earth signal
return cable is connected between the instrument and the substrate.
When the probe is passed over a coating flaw, the electrical circuit is
completed and current flows from the probe to the substrate. As a
result, the instrument gives audible and visual alarms and a spark may
be produced at the flaw.
The user can perform the test to any one of a number of international
testing standards using the built-in Voltage Calculator.
The Elcometer 266 features an easy to use menu-driven graphical
interface which guides the user during setup of the instrument and
during measurement.
The instrument will operate in one of three voltage ranges; 0.5 kV to 5 kV,
0.5 kV to 15 kV and 0.5 kV to 30 kV. The voltage range is determined by
the model of high voltage probe handle fitted to the instrument - not the
instrument itself.
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2 GAUGE OVERVIEW (continued)
Elcometer 266 DC Holiday Detector
Earth Signal Return Lead, 10m (32 ft)
Connecting Cable for High Voltage Probe Handlea
Band Brush Probe
Rechargeable Lithium-ion Battery Pack
Battery Charger (UK, EU, US and AUS plugs included)
Shoulder Strap
Transit Case
Calibration Certificate (if ordered)
User Guide
a High voltage probe handle must be ordered separately - see Section 6 ‘High Voltage Probe Handle’
on page en-11.
3 BOX CONTENTS
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1 On/Off Key
2 Multi Function Menu Keys
3 Shoulder Strap Connection
4 Rechargeable Lithium-ion Battery Pack
5 LCD Display
6 High Voltage Probe Handle Connection
7 Earth Signal Return Cable Connection
8 High Voltage Probe Handle Connecting Cable
9 High Voltage Probe Handle
10 Probe Accessory Connection
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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.
1 Scroll up / down through menus and lists of values
Increases / Decreases Values
2 The function of these keys varies and is shown on the display
3 Switches the instrument on / off
4 Press to toggle high voltage probe handle on / off
5 Red light: Probe voltage is on
6 Blue light: Flaw detected
4.2 THE DISPLAY
The main screen displayed (whilst taking measurements) is the
Reading Screen.
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a
Current: Measured Value
b
Current: Set Value
c
Voltage: Measured Value
d
Voltage: Set Value
e
Calculate Voltage
f
Adjust Voltage
g
Adjust Sensitivity
h
View Menu
i
Voltage Locked (see page en-11)
j
Sensitivity Locked (see page en-11)
k
Battery Life Indicator
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5
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5.1 CHARGING THE BATTERY PACK
The Elcometer 266 is powered by a rechargeable Lithium- b
Ion battery
pack which can be charged inside or outside the instrument.
Each instrument is dispatched from the factory with the battery
discharged. Recharge the battery fully before using for the first time.
Note: Only one battery pack is supplied with each instrument. To increase productivity
on site, we recommend purchasing a spare battery pack which can be charged
whilst the instrument is in use, see Section 16.3 ‘ Batteries, Chargers & Earth
Signal Return Leads’ on page en-28.
Before you start:
Use only the charger supplied with the Elcometer 266 to charge
the battery. Use of any other type of charger is a potential
hazard, may damage your instrument and will invalidate the
warranty. Do not attempt to charge any other batteries with the
supplied charger.
Always charge the battery indoors.
To prevent overheating, ensure that the charger is not covered.
The instrument can be charged whilst it is switched on or off. If
charged whilst switched on, the high voltage supply to the probe
will be disconnected automatically and a battery charging icon will
be shown on the display. If charged whilst switched off, the
display will remain blank.
WARNING: Do not attempt to connect the supply side of the battery charger to
generators or any other medium to high power source other than the single
phase 50Hz A.C. mains outlet supplied from an approved and safe mains
switchboard. Connection to other supply sources such as generators or
inverters may have the potential to damage the charger, the battery and/or the
instrument invalidating the warranty.
Charging the battery pack inside the instrument:
1 Unscrew the retaining screw (a)
and open the access cover on the
rear of the instrument.
2 Connect the lead from the charger
into the socket marked ‘Charger
Input’ behind the interface access
cover.
5 GETTING STARTED
b The Elcometer 266 is not designed to operate using dry cell batteries.
a
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5 GETTING STARTED (continued)
3 Plug the charger supplied into the mains supply. The LED
indicator on the charger will glow orange.
4 Leave the gauge charging for at least 4 hours. The LED indicator
changes colour from orange to green when charging is complete.
5 When charging is complete, disconnect the charger from the
mains supply before removing the lead from the instrument.
Charging the battery pack outside the instrument:
1 Unscrew the two battery pack
retaining screws at the rear of the
instrument and slide out the battery
pack.
2 Connect the lead from the charger into
the socket on the battery pack.
3 Plug the charger supplied into the
mains supply. The LED indicator on
the charger will glow orange.
4 Leave the battery pack charging for at least 4 hours. The LED
indicator changes colour from orange to green when charging is
complete.
5 When charging is complete, disconnect the charger from the
mains supply before removing the lead from the battery pack.
Whilst the battery pack is removed from the instrument, do not allow metallic
objects to come into contact with the battery terminals; this may cause a short
circuit and result in permanent damage to the battery.
The battery condition is indicated by a symbol on the display:
Symbol
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
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5.2 SWITCHING THE INSTRUMENT ON / OFF
To switch on/off: Press the On/Off button ‘ ’.
Note: To extend battery life (time between charges) the instrument can be set to
switch off automatically after a user defined period of inactivity between 1 and
15 minutes. The default setting is 15 minutes.
5.3 SELECTING YOUR LANGUAGE
1 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.
2 Select your language using the keys.
3 Press SEL to activate the selected language.
To access the language menu when in a foreign language:
1 Switch the instrument OFF.
2 Press and hold the left hand key and switch the instrument ON.
The display will show the language selection screen with the
current language highlighted by the cursor.
3 Select your language using the keys.
4 Press SEL to activate the selected language.
5.4 CONFIGURING THE INSTRUMENT
1 Press the MENU key to display the main menu.
2 Use the keys to scroll up and down the menu items.
3 Press SEL to activate the selected option or access the sub-
menu, see Table 1.
4 Press BACK or ESC to leave the main menu or any sub-menu.
TABLE 1
Option
Action Required
BACKLIGHT
Press SEL to toggle the display backlight on or off.
BEEP VOLUME
Press SEL followed by or to set the beep volume;
1 (minimum) to 5 (maximum). Press OK when finished.
UNITS
Press SEL followed by or to select the measurement
units;µm, mm, mil, thou or inch. Press OK when nished.
LANGUAGES
Press SEL followed by or to select the display language.
Press OK when finished.
5 GETTING STARTED (continued)
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