Kolectric MC8022+ User manual
MC8022+
Covermeter
Kolectric Research
➤Instrument Overview 2
➤Getting Started 3
➤Measuring Cover 4
➤Automatic Bar Sizing 5
➤Low Cover Scanning 6
➤Custom Cover Tables 7
➤Data Logging and Download 8
➤Installing Download Software 9
➤Specification 10
➤Repair and Disposal 11
CONTENTS1
Kolectric Research
Phone +44 (0)23 8066 0127
Email [email protected]
www.kolectric.com
Controls and Display
Switch the MC8022+on by pressing and holding
the red button until the display shows the
instrument name and serial number. The display
quickly changes to show the normal controls and
cover reading.
Press the red button briefly to change the displayed
control page. These pages are shown in turn:
Cover depth Normal display for measuring
cover depth
Bar size Automatic bar size measurement
Data log Review logged data
Settings Configure measurement, logging,
audio and time & date
Page labels and menu items are shown in this
manual like this Cover depth
The three yellow buttons have different functions
depending on which control page is being used.
The active function is shown on the display just
above each button. In this manual button labels are
shown like this (SELECT).
When changing Settings, the left ( ) and right
( ) yellow buttons move up and down through
the list of settings, the middle yellow button
is pressed to select a menu item (SELECT) or
change a setting ( ) and the red button is used
to move back to the previous menu.
Switch the instrument off by pressing the red
button for about two seconds until the screen
shows the Settings display. The first option in the
list, Switch off, is highlighted. Press (SELECT)
to turn the instrument off. The instrument can
be switched off in any mode and will switch off
automatically after a period of time if there have
been no key presses.
To change the time before shutdown press the
red button to display Settings, then select
Measurement.
Setting “Never” prevents automatic shutdown
which can be useful for some complex
measurements.
Backlight
The display is designed to be visible in normal
daylight conditions. For use in darker environments,
turn on the backlight.
The display backlight can be turned off to save
power or improve visibility depending on local
lighting conditions. The display contrast can be
adjusted to give the best visibility at different
viewing angles.
Charging the battery
MC8022+contains a rechargeable battery that
provides about 20 hours of typical operation.
When operating, the battery indicator at the left
hand side of the Cover depth display shows
approximately how much charge is in the battery.
The battery meter will appear empty when there is
less than 30 minutes operation left.
The instrument should be fully charged before
first use in the field. If you know the MC8022+
will not be used for a few months, connect
the charger for 1-2 hours before storing
the instrument, and then fully recharge the
battery before it is used again.
To recharge the battery, switch the instrument off
and connect the supplied charger to the left hand
connector on the instrument. Charging the battery
to 95% of capacity takes about 2 hours. Leave the
charger connected for at least 3 hours for a full
recharge.
Only use the supplied battery charger. Using any
other type of charger may result in reduced battery
performance or damage to the equipment. Damage
caused by using an unsuitable charger is not
covered by warranty. If the charger is damaged,
obtain a genuine spare part from Kolectric
Research or your local agent. Always replace the
connector sealing cap after charging to prevent
ingress of dust and moisture.
Setting the date and time
MC8022+has an internal clock which is used to
timestamp logged data. The time, date and display
format (12 hr or 24:00 hr, d/m/y or m/d/y) can be
set from Date and Time.
Display the Settings by pressing the red button
three times.
Press the right-hand yellow button ( ) to
move down the menu until Date and Time is
highlighted. Press the middle yellow button
(SELECT) to adjust the Date and Time.
Use the yellow buttons ( ) and ( ) to move
up and down the menu and ( ) to change the
selected setting.
When finished, press the red button to return to
Settings.
Setting the measurement units
Cover depth and bar size can be displayed in
millimetres or inches to suit local requirements.
A third option is provided to display cover depth
in arbitrary units (0-1000). This scale is used with
custom depth tables.
To change measurement units, go to Settings and
then select Measurement. Scroll to Cover units
and press the middle yellow button to change the
setting.
Maintenance
MC8022+should be kept clean using a damp cloth.
Do not immerse in water. Do not use solvent or
abrasive cleaners.
The bottom of the probe is protected by a
replaceable yellow plastic plate. This will wear
as the probe is run over concrete. It should be
peeled off and replaced periodically to protect the
main probe housing. Self adhesive replacements
are included in each MC8022+kit and spares are
available direct from Kolectric Research.
Certification
The MC8022+Covermeter should be tested
for compliant performance periodically; the
recommended interval is 12 months. Complete
units should be packed appropriately and returned
to Kolectric Research for testing and certification.
There are no user serviceable components inside
the equipment and opening the equipment voids
any warranty.
GETTING STARTED3
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Use the following process to measure cover:
1. Connect and Calibrate the probe
2. Set the measurement range
3. Set the bar size
4. Locate the bar
5. Read the cover depth
Connect and Calibrate the probe.
Calibration must be performed every time you
switch the instrument on.
To remind you, the Cover depth display will show
0 mm (0.00 in) until calibration is performed.
Connect the probe cable to the connector on the
right hand side of the MC8022+. Align the white
index marks on the connectors, push the plug onto
the instrument connector, then turn the locking ring
in the direction of the green arrow. Press the red
button to switch on the MC8022+.
Calibrate the instrument by holding the probe
in the air at least 1m away from metal objects
and magnetic fields, such as keys, rings or coins,
fluorescent lights, mobile phones or computer
screens.
Press and release the left hand yellow button
(CAL). The instrument will beep when the button
is pressed and beep again when calibration is
complete. The display changes to show a value
around 160 mm (Lo) or 220 mm (Hi) depending on
the range and bar size selected.
“Cover depth at limit” is shown to indicate that
the reading is outside the specified measurement
limits of the instrument.
Move the probe towards a metallic object and note
that the cover depth display gradually changes to a
lower value.
These simple checks confirm that the instrument is
functioning and ready for use. If required, a sample
rebar of known diameter can be used for a more
complete confirmation of operation.
To get the best possible results, calibration should
also be performed periodically if you are making
large numbers of measurements and especially
before making measurements of deep cover.
Set the measurement range
The MC8022+has two measurement ranges – High
and Low. Change range by pressing the right hand
yellow button (Range).
An indicator on the right-hand side of the screen
shows Hi or Lo.
The High range is more sensitive so it can measure
greater cover depths. When locating a bar or
measuring cover, you should normally use the
High range to avoid missing deep bars. However,
when trying to find the orientation of bars that are
closely spaced, try the Low range because it is less
affected by nearby bars.
Set the bar size
Cover measurement is only accurate if the bar size
is known reasonably precisely.
If you know the bar size, press the middle yellow
button (BAR) to set the value shown on the Cover
depth page. Pressing (BAR) selects the next
available bar size. In the picture, the bar size has
been set to 16 mm.
To locate a bar and estimate its size automatically,
see “Automatic bar sizing” below; this will set the
current bar size to the measured value.
Quick bar location
To quickly find the approximate position of a bar,
look at the top of the probe whilst slowly sweeping
the probe over the search area.
The red bar indicator light flashes briefly when the
signal detected from a bar is near its peak and this
can be used as a quick guide to bar location.
For more precise location follow the procedure
below.
Precise bar location and cover measurement
Hold the yellow face of the probe flat against the
concrete surface. Move the probe over the surface
whilst watching the cover depth display. The probe
is positioned roughly over a bar when the cover
depth reading is at its lowest.
Keeping the probe over the same spot, rotate it
around its centre. When the lowest cover reading
is seen, the probe body has been aligned with the
direction of the bar.
Now the bar orientation is known, slowly sweep
the probe, keeping it parallel to the bar. The lowest
cover reading will now correspond to the centre
line.
Once you have found a bar and aligned the probe
to it, you can read the cover depth from the display.
If you want to log this cover reading, press the
yellow button on the probe. This will record the
cover depth, bar size, time and date and can be
viewed on the MC8022+or downloaded to a PC
later if required. (See Data logging, below)
For maximum precision follow the same procedure
but instead of watching for minimum cover, look for
maximum signal strength reading.
Signal strength is shown below the main cover
depth readout, in smaller numbers – 1854 in the
picture.
The signal strength reading is at its greatest when
the probe is aligned with the centre line of a bar.
When this position and alignment is found, read
the cover as before.
In some situations an alternate method is useful
to map out the orientation of bars. First sweep
the probe in a straight line until you find a bar (bar
indicator light / lowest cover / maximum signal).
Mark this position. Now perform a second sweep
in the same direction but some distance from
the first and again mark the bar position. A line
drawn between these marks gives the orientation
of the bars. Keeping the probe parallel to the bar
orientation, perform a third sweep to find the
centre of the bar. The location of parallel bars can
now be marked by extending the sweep either side
of the first bar.
Audio cover mode
MC8022+has an audible indication of detection
strength which helps to locate bars without having
to watch the display. To use Audio cover indication,
go to Settings, select Audio and set Mode to
“Cover”. You can also adjust the volume from this
menu.
Now when you sweep the probe over the search
area, you will hear a tone that increases in pitch
as you get closer to a bar and reaches its highest
pitch when the probe is aligned with the bar.
Set the audio Mode to “Off” to stop the tone.
MEASURING COVER4
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Bar size Hi range Lo range
6 mm 110 mm 70 mm
40 mm 185 mm 90 mm
Maximum cover
AUTOMATIC BAR RESIZING5
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The MC8022+can be used to automatically
calculate the size of covered rebar.
First, align the probe with the centre line of the
bar to be measured using the bar search process
above.
Keeping the probe in the same position, press the
red button to select the Bar size page. Initially this
will show the detected signal level. You can adjust
the position of the probe so that the reading is at
its highest indicating the best alignment of the
probe with the bar.
Whilst keeping the probe completely still in this
position, press the left yellow button (SIZE) to
calculate the bar size.
When the process is complete, the display shows
the bar size. The instrument will indicate if the
target bar is too near or too far to complete the
calculation. If the bar is too near, a plastic spacer
can be used to hold the probe away from the bar.
Press the right yellow button (SIGNAL) to show
the detected level again to repeat the process.
Press the mode button to change back to
cover depth mode and note that the bar size
shown in the top right of the display has been
updated automatically, ready for cover depth
measurements.
LOW COVER SCANNING6
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The MC8022+can be used to quickly check a large
area for sufficient cover. You can set the minimum
acceptable cover and the MC8022+will sound an
audible alarm if an area of lower cover is detected.
To use Low Cover Scanning, configure the
MC8022+as follows:
Press the red mode button to show the Settings
page, then select Audio. Press the middle yellow
button ( ) to change the audio Mode to “Low
cover”.
Adjust the volume according to the environment.
Move to the Low Cover setting and use the
middle yellow button ( ) to select the required
cover depth, pressing and holding the button to
rapidly step through the available cover range.
Press the red button twice to return to the Cover
depth display.
Sweep the probe over the area to be checked. An
alarm is heard if a bar is detected with low cover.
Turn off Low Cover mode from the Audio menu
when the search is complete.
CUSTOM COVER TABLES7
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The MC8022+can be used to assess cover over
non-standard bar, pipes or other inclusions in
pre-fabricated structures. This process requires
preparation of a custom depth table and setting the
measurement units to an arbitrary scale of 0-1000.
Contact your Kolectric reseller for advice on using
custom cover tables.
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MC8022+can log cover readings as you make them
so that you can review them later or download
them to a PC.
Prepare for Data logging
Before starting a new set of measurements,
prepare as follows.
Turn the MC8022+on. Check the time displayed
on the Cover depth page and make adjustments,
if necessary, using the Data and Time menu in
Settings.
The MC8022+can store 2000 readings. It is good
practice to regularly review or download the
data you need and then clear the memory on the
MC8022+.
First, check that you have reviewed or downloaded
any previous logged data that might be needed.
Go to the Settings and select Data log.
Select Clear log – the display will show “Sure?”.
Select Clear log a second time and all stored
readings will be deleted. Press the red button to
exit without clearing the log.
The Overwrite option can be used so that the
MC8022+always stores the latest readings and
automatically deletes older readings as new ones
are logged. Switch this option on to overwrite
old data. When Overwrite is switched off, the
MC8022+will stop logging when the memory is
full, protecting previous readings.
Logging Cover readings
When measuring cover, press the yellow button on
the probe to log the current cover depth.
The instrument beeps to confirm that the data has
been recorded and the display briefly shows “Log”
below the bar size.
Reviewing Cover readings
To review logged data on the MC8022+, press the
red button to display the Data log page.
The display shows the latest recorded reading.
To see older readings press the right-hand yellow
button ( ) ; to see newer readings use the left-
hand yellow button ( ).
Downloading
The optional MC8022+download kit includes a
USB cable and software to transfer logged data to
a PC. Follow the instructions in the next section to
install it on your PC.
To copy logged cover readings to a PC, first unplug
the probe cable and connect the download cable to
the right-hand connector on the MC8022+. Plug the
other end of the download cable into your PC’s USB
port.
Run the download software using the shortcut
“Kolectric MC802x download”.
Click the Download button. The logged data
appears in the download software window.
To save the data to your PC, click “Save File” and
choose a suitable filename. By default, this will
save all the downloaded data. To save a specific
range of data, enter the first and last required
record numbers before clicking Save File.
When all the data required has been downloaded
and saved, clear the Covermeter’s memory by
clicking “Clear Log”. This removes all logged data
from the MC8022+.
You can also set the MC8022+time and date from
the download software.
DATA LOGGING
AND DOWNLOAD
8
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The MC8022+Download Kit includes software
to copy logged cover readings onto a PC using a
USB cable. If your MC8022+kit was not purchased
with the download cable and software, it can be
purchased directly from Kolectric Research.
Kolectric download software is designed for
Windows 10 or Windows 7. You may need
administrator rights to successfully install the
software. Ask your IT advisor if in doubt.
Install the software BEFORE connecting the
download cable.
Insert the USB memory stick into your PC. Open the
root folder for the USB disk and run ‘setup.exe’.
Follow the on-screen instructions.
When the installation is complete, plug the
download cable into the right-hand connector on
the MC8022+(disconnect the probe cable first).
Connect the other end of the cable to a USB port
on your PC. Switch the MC8022+on.
The software creates a new program shortcut:
“Kolectric Research | Kolectric MC802x download”
Run this to start the software.
INSTALLING DOWNLOAD
SOFTWARE
9
Cover Measurement
Cover depth indicated is from the bar surface.
Performance meets or exceeds the requirements
of BS1881 part 204:1988 when instrument has
been tested and certified compliant by Kolectric
Research and is operated according to this user
manual.
SPECIFICATION10
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Bar Size Cover Range
6 mm bar 5 mm – 108 mm
40 mm bar 22 mm – 185 mm
Cover depth Accuracy
up to 60 mm cover ±1 mm
up to 120 mm ±2 mm
up to 160 mm ±3 mm
over 160 mm ±4 mm
Accuracy ± 0.5 mm – ± 1.5 mm
Resolution 0.1 mm
Minimum Cover 8 – 22 mm
depending on bar size
Maximum Cover 80 mm (40 mm bars);
60 mm (6 mm bars)
Automatic Bar Sizing
Bar Size Cover Minimum Spacing
16 mm 60 mm 70 mm
16 mm 100 mm 110 mm
25 mm 130 mm 150 mm
Bar Resolution
Bar resolution is dependent on bar size and cover.
Typical examples of resolution performance are
shown:
Operating Weight 800g (instrument
+probe+cable)
Operating Temp -10°C – +50°C
Battery Operation 20 hrs typical
Full Charge 3 hrs typical
Battery Charger 110 – 240V AC
Ingress Protection IP65
Operating Parameters
Repair
There are no user-serviceable components inside
the equipment. Opening the equipment voids any
warranty.
If you damage your MC8022+or it malfunctions
during the warranty period, please contact your
reseller or Kolectric Research directly to arrange
for assessment and repair.
Recycling
MC8022+contains sophisticated electronics which
include valuable materials which can be recovered
by an appropriate waste electrical and electronic
equipment (WEEE) recycling process. The
equipment is marked with the crossed-out wheeled
bin symbol to remind you to recycle the equipment
separately from household waste.
Battery
MC8022+contains a lithium-ion battery pack. This
is designed to last the lifetime of the instrument
and must only be replaced, or removed for
disposal, by Kolectric Research, a qualified service
agent or an authorized WEEE recycling centre.
Damaging the battery may result in catastrophic
failure, fire and serious personal injury.
Further details are available directly from Kolectric
Research.
REPAIR AND DISPOSAL11
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Kolectric Research
New Forest Enterprise Centre
Southampton, SO40 9LA, UK
Phone +44 (0)23 8066 0127
Email [email protected]
www.kolectric.com
Document number IM0261-003-30 Iss 1
Copyright 2021 Tallix Ltd
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