GE Inspection Technologies Operating manuals provide functional information about a particular instrument or group of instruments. However, proper setup and use of this equipment and the performance of
electromagnetic tests requires familiarity with factors
which are beyond the scope of Operating manuals.
These factors include the following:
• Selection of appropriate cables, probes, fi xtures,
mechanical handling equipment and other accessories.
• Selection of proper test frequency, test mode and
other test parameters.
• Preparation of the test surface.
• Characteristics of the test material for example: conductivity, hardness, permeability, geometry, magnetic properties, heat treatment etc.
• Environmental factors such as temperature humidity, dust and electrical interference.
• Any individual factors that will depend on the particular test object or test being performed.
It is therefore imperative that operators are properly
trained in both general procedure for electromagnetic
training testing and in the set up and execution of the
particular test to be performed. It is the responsibility
of the instrument user to ensure that test operators are
trained to a suffi ciently high standard, suitable equipment is used in the correct manner and that any test
variables which may affect specifi c tests are taken into
account. Similarly, compliance with standards such as
ASTM, ASNT, API, ASME, BS etc., as well as the observance of any test procedure specifi ed by any government, manufacturer or other regulating authority is
the responsibility of the user.
Periodic calibration, cleaning and maintenance may
be necessary to ensure proper operation of the equipment.
Environmental conditions and regularity of use should
be considered when determining the frequency of
such checks, then this should be observed.
Incidents such as physical shock, immersion in liquid
and exposure to damaging environments such as excessive heat, moisture, dirt or dust can adversely affect equipment performance. The equipment must be
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Important notes
Introduction
examined for damage and recalibrated after any such
incident. Do not use any product which you know or
suspect to be faulty.
Reference samples used for calibration should, ideally,
have the same material properties as the object to be
tested, or a known relationship to it, established by a
laboratory test.
Equipment calibration should be checked frequently
during testing to assure valid test measurements.
As a matter of good practice and wherever possible,
suspected defects in critical areas should be cross
checked using appropriate alternative indication techniques.
Any question about the use, operation, specifi cations
or special considerations relative to the particular
GE Inspection Technologies product you are using
should be addressed to your local sales representative,
the distributor or GE Inspection Technologies direct.
Eddy current based instrumentation works by measuring minute electromagnetic fi elds. Interfering signals,
even at a level satisfying CE mark requirements, may
be able to mask or distort this information. The user is
responsible for ensuring that no such effect is occurring.
GE Inspection Technologies pursues a policy of continued development of its products. The company reserves the right to change specifi cations without prior
notice.
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Introduction
How to use this manual
1.2 How to use this manual
In order to simplify this operating manual, the operational steps, information listings etc, always have the
same format. This will enable you to quickly fi nd information.
Operation steps
Operation steps are laid out in tables as shown in the
following example: To set the high alarm to trip at 80.5.
StepKeyDisplay
1
From “Off” select measurement mode.
2
Enter parameter menu.
3
Step through the menu
to the “HIGH ALARM”
parameter.
4
Move across to the setting fi eld.
5
Increment/decrement to
required level.
6
Return to normal measurement mode.
Normal measurement display
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How to use this manual
Introduction
This action table indicates in step form:
– Switch on with a press of ON/OFF button.
– Press the MENU button.
– Press INCREMENT/DECREMENT button repeat-
edly until the required parameter is accessed.
– Press the SET button to move to the value setting
fi e l d .
The INCREMENT or DECREMENT buttons are then
used to set the required value.
– Press the MENU button to return the instrument to
its Measurement Mode ready to take readings.
Display fi gures in this manual may show XXXX, YYYY
or ZZZZ as numerical values etc. these indicate that
any valid number or menu item may be displayed.
Lists
Lists are arranged as follows with bulleted indents.
• 101.6 % IACS. Highest reading
• 101.2 % IACS. Mean reading
• 99.8 % IACS. Lowest reading
Notes
H
Note:
Under this heading you will fi nd special recommendations concerning measurement techniques, or references to important information in other chapters of the
manual.
Button Operation (Keypad)
• Press: Button contact then immediate release.
• Long Press: Button contact for a period of three
seconds or more then release.
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1 - 6 Issue 04, 06/2007 AutoSigma 3000
Page 13
Standard package and accessories 2
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Standard package and accessories
2.1 Standard package
Product code Description Order number
AutoSigma 3000 DL 47I001DL
Probe 12.7 mm (60/500 KHz) 47P001
Cable (Probe) 47A001
Probe fi nger support 47A005
Curve measurement adapter 47A006
Hard plastic packall case 47A008
Calibration Certifi cate –
Standard package
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Recommended accessories
2.2 Recommended accessories
Product code Description Order number
Soft Case with Shoulder Strap 47A009
Probe 8 mm (500 KHz) 47P002
Cable (Printer) 33A145
Cable (Data Logger) 47A003
Computer Interface Cable (PC) 33A146
Computer Interface Instructions –
Operator Reference Block Plate and 44A016
set of fi ve Operator Reference Blocks
See Data Sheet for details
Standard package and accessories
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2 - 4 Issue 04, 06/2007 AutoSigma 3000
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Preparation for operation 3
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Page 18
Preparation for operation
Battery installation
3.1 Battery installation
Power requirements
The AutoSigma 3000 can only be operated by battery,
using three AA size cells, Alkaline (preferred), Dry
Cell, or Ni-Cad .
H
Note:
If Ni-Cad batteries are used the battery level indication will not be correct, and they should be removed
for charging when the level indicator shows about
25 %. The AutoSigma 3000 has no provision for in situ
charging.
– Undo Battery Cover Screws and lift off the cover
(the screws are captive in the lid).
– Insert three AA alkaline cells as shown.
Alternative cells may be used if alkaline batteries are
not available, but unit operating time may be reduced
and battery level indication inaccurate.
If the batteries are installed incorrectly with the polarity
reversed, no damage to the AutoSigma 3000 will occur, but the instrument will not function.
– After the batteries have been installed, replace the
battery cover and refi t the screws. The Icon on the
display shows the battery charge.
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Probe connection
H
Note:
When the battery empty state is displayed, the batteries should be replaced at once.
The AutoSigma 3000 automatically turns off when
the batteries become too weak for reliable operation.
When using the equipment in remote locations it is advisable to carry spare batteries. Discharged or faulty
batteries are classifi ed as Special Waste and must be
disposed of accordingly.
Preparation for operation
3.2 Probe connection
The connecting cable for the probe is a 5 way LEMO
to 5 way LEMO and may be used either way round.
– Align the red dots of the LEMO plug and the socket
of the cable and plug together, they are polarised
and will therefore not engage unless correctly mated.
– Similarly attach the cable to the instrument.
The connectors are self locking and will not become
detached without being released by pulling the serrated section of the plug.
H
Note:
Before a probe can be used to take accurate measurements, its Code Number (if not already contained in
the probe fi le) must be entered into the instruments
operational memory – see section 3.3. Instruments
supplied from the factory with a probe will already
have the code number entered. 12.7 mm diameter
probes have a 4 digit code and 8 mm diameter probes
a 2 digit code.
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Preparation for operation
Probe identifi cation
If an instrument reset is carried out the Probe data will
be returned to “5555” or “55” thus requiring the probe
code number/s to be re-entered.
3.3 Probe identifi cation
12.7 mm Probe: Dual Frequency 60 and 500 kHz
(L/H) has a four-digit code (see below).
Probe code shown here on the display.
8 mm Probe: Single Frequency 500 kHz (H) only, has
a two-digit code.
Probe code shown here on the display.
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Entering probe code data
H
Note:
The H or L indication at the left bottom of the display indicates which operational frequency has been
selected for measurement, either frequency for the
12.7 mm probe. 500 kHz (H) only may be used for the
8 mm probe.
3.4 Entering probe code data
E.g. 12.7 mm H/L probe, code number is 6547. The
code is stored in the format below, there are code slots
for three large and three small diameter probes, and
their selection is sequential.
6 5 4 7
and is equivalent to data stores
D1 D2 D3 D4
Preparation for operation
StepKeyDisplay
1
From “Off” select measurement mode.
2
Open parameter menu.
3
Step through the menu
to the PROBE parameter.
4
Move to the setting fi eld.
If the probe code displayed has only two digits present, then
after step 4 select the slot required by inc/dec to one of the
three available four digit slots. Return to the parameter fi eld by
pressing SET and continue to PROBE D1 as normal step 5.
5
Step through the menu
to the PROBE D1 parameter.
6
Move across to the setting fi eld.
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Preparation for operation
General parameter setting
StepKeyDisplay
7
Increment D1 value to 6.
8
Move back to parameter
fi e l d .
9
Enter the values for D2, D3 and D4
using the same method.
10
Store these settings
in the internal memory
(Single beep will occur
when complete).
11
Return to normal measurement mode (ready
for set probe routine).
long
press
3.5 General parameter setting
E.g. changing language to German (D) from Off condition.
H
Note:
This sequence is used to set any of the adjustable
menu parameters as listed in section 3.6.
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Start-up
Preparation for operation
StepKeyDisplay
1
From “Off” select Measurement mode.
2
Open the parameter
menu.
3
Step through the menu
to the LANGUAGE parameter.
4
Move across to the setting fi eld.
5
Increment/Decrement to
the required language:
German.
6
Return to normal measurement mode.
Normal measurement display
3.6 Start-up
Normal switch on
Press ON/OFF button to bring the instrument into operation in the measurement mode with the parameter
values as they were when it was last switched off.
Reset switch on
Returns the instrument to it’s default settings, not active in User mode.
StepKeyDisplay
1
From “Off” initialise sequence for access.
2
Press for start-up. Release SET button when
beep is heard.
3
Confi rm reset.
Normal measurement display
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Preparation for operation
Start-up
The instrument will revert to the default parameter values as below.
• Backlight Off
• High Alarm Off
• Low Alarm Off
• Temperature Units Celsius
• Recall 1
• Frequency 60 kHz
• Probes, 3 each 5555 / 55
• Store 1
• Units % IACS
• Contrast 7
• STD 1 60.50
• STD 2 8.870
• Audio Alarm Off
• Power Down 15 minutes
• Language English (GB)
• Baud Rate 1200
• D1, D2, D3, D4 5, 5, 5, 5
The following list shows the settings available for each
parameter.
Parameter Available States
Backlight On/Off
High Alarm 1.0 – 110 % IACS / Off
Low Alarm Off / 1.0 – 110 % IACS
Temperature Units Celsius / Fahrenheit
Recall 1 – 10
Frequency 60 / 500 kHz
Probe Codes 3 large and 3 small
Store 1 – 10
Units % IACS or MS/m
Contrast 3 – 10
STD 1 30 – 65 % IACS
STD 2 6 – 50 % IACS.
Audio Alarm On/Off
Power Down 15 / 10 / 5 / 1 minutes
Language English (GB) /German (D) /
French (F) etc.
Baud Rate 9600 / 4800 / 2400 / 1200
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Basic measurement knowledge
Preparation for operation
3.7 Basic measurement knowledge
Conductivity of metals is commonly measured in two
sets of units. In the SI system the unit of conductivity
is the MegaSiemens/meter (reciprocal ohm-meter).
Conductivities of metals at ambient temperature are
typically in the range of 1 to 60 MegaSiemens/meter.
For convenience metal conductivities are often expressed as a percentage of the conductivity of a standard sample of copper – the International Annealed
Copper Standard (IACS). 100 % IACS corresponds
to 58 MegaSiemens/meter. Note that since this “pure”
copper standard was established in 1913 pure copper
now often has a conductivity greater than 100 % IACS.
The AutoSigma 3000 measures the conductivity of
non-magnetic metals and alloys in the range 0.8 to
110.0 % IACS. It uses the Eddy Current technique for
measuring the conductivity of materials in % IACS, or
MegaSiemens/meter (set from the instruments menu
selections).
It is important to understand that eddy current measurement is essentially a “skin” effect. The eddy current fi eld intensity is greatest at the surface and decreases exponentially with depth. The depth at which
the fi eld strength reduces to 1/e (37 %) of its surface
value is referred to as the “standard depth of penetration”. This depends primarily on the operating frequency and the conductivity of the metal.
It is generally considered that materials of thickness
greater than three standard depths of penetration can
be measured without any correction factors being required.
For example at 60 kHz this fi gure (the “effective depth
of penetration”) is around 0.05" (1.25 mm) in Aluminium Alloys (conductivity approximately 35 % IACS) and
0.32" (8 mm) in Titanium alloy (conductivity approxi-
mately 1 % IACS). At 500 kHz the corresponding values are 0.02" (0.5 mm) and 0.11" (2.8 mm).
Care must also be taken when measuring non-homogeneous materials, for example materials which have
been surface heat-treated, clad or plated, or where the
surface is rough or corroded. Measurements at different frequencies will give different results due to the
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Preparation for operation
Basic measurement knowledge
different distribution of energy within layers of different conductivity. Care must be taken to always measure such materials at the same frequency (usually
60 kHz).
The conductivity of a material changes considerably
with temperature, but is normally specifi ed at 20 °C.
The AutoSigma 3000 indicates the materials 20 °C
conductivity value by applying a standard correction
algorithm, valid for the most common aluminium alloys. For the best accuracy, the instrument, material to
be tested, probe, and calibration standards should be
at the same temperature, close to 20 °C.
Other key factors are coating thickness/lift-off and material curvature.
Measurements can be made through layers of paint
or other non-conductive coatings up to a thickness of
0.020" (0.5 mm) with the 12.7 mm probe and 0.010"
(0.25 mm) with the 8 mm probe.
Use on curved surfaces requires some caution, with
concave surfaces the effect is primarily lift-off and the
instrument will compensate up to the point where the
spacing of the centre of the probe from the material
becomes excessive. With convex surfaces the indicated conductivity will decrease as the radius decreases.
Correction tables are required for radii below approximately 3" (75 mm).
To ensure proper operation the calibration standards,
instruments and probes should be checked and recalibrated on a regular basis (e.g. check on standards before each use and factory re-calibration every year).
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Basic functions 4
AutoSigma 3000 Issue 04, 06/2007 4 - 1
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Basic functions
Measurement method
4.1 Measurement method
The instrument uses a probe which is excited by an
AC signal (60 kHz “L” or 500 kHz “H”) from the main
unit. This AC signal uses the material to be measured
as a coupling medium to a detector coil also in the
probe. From the phase and amplitude of the detected
signal the instrument calculates the conductivity of the
coupling medium.
Only conductivity of non-magnetic metallic materials can be measured using this system. Conductivity
changes considerably with temperature so the probe is
fi tted with a thermistor. It’s temperature is monitored in
order to display a mathematically adjusted conductivity
reading relative to 20 °C. The instrument will indicate
the necessity for a Probe Reset after a temperature
change of +/–3 °C. The set routine should be carried
out just before a measurement if absolute accuracy is
required.
A certain amount of surface unevenness and nonmetallic
coatings up to 0.020" (0.5 mm) are allowed for in the
measurement system (0.010" (0.25 mm) only with the
8 mm probe). When the probe has exceeded this “liftoff” distance, PROBE OFF METAL will be displayed.
4.2 Display
The display is a back lit LCD, the back light can be set
ON or OFF. When in Measurement Mode the display
will indicate the numerical value of the material being
measured in % IACS (I) or MegaSiemens/meter (S)
depending on the units selected. PROBE OFF METAL
is displayed if the probe is in air and not in close proximity to a measurable material.
Other display modes can be selected which are used
for setting up operational parameters, or logging fi les
(see chapter 5). In these Modes the display will highlight the parameter being set and its current status. In
the measurement mode Alarm States are indicated
by icons at the bottom of the display. The frequency,
probe code selected, measurement units and state of
charge of the battery are also shown at the bottom of
the display.
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Keypad
Basic functions
4.3 Keypad
The AutoSigma 3000 has a membrane keypad, consisting of eight legend pads. The large central pad with
the up and down arrows has two switches, one under
each arrow. The upper arrow is the INCREMENT control and the lower arrow is the DECREMENT control,
they operate on the parameter fi eld or value selected.
The other pads only have one switch each. The basic
function of the other keys are as follows:
Key operation on standard model
ON/OFF This button switches the instrument on
and off; a short press is used to switch on
and a long press switches the instrument
off.
MENU This button is used to select set-up pa-
rameters and return the instrument to its
measurement mode.
SET This button toggles the display between
the menu parameter and its value fi eld,
and is also used in conjunction with the
ON button to reset the instrument to its
default settings.
SEND This button, on the basic version, is used
to enter the probe data into the internal
memory.
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Basic functions
Keypad
Additional key operations on DL option
H
Note:
If these keys are pressed on the older Basic Model
without the DL option the screen will indicate Data
Logger is not fi tted.
MEM This button selects the Memory Menu
(Files must have been allocated, and the
fi le selection be on a particular fi le not
ALL FILES).
FILE This button selects the FILE menu (With
ALL FILES cleared it will access the number of fi les set up).
C Depending on which menu is currently
selected, a long press of this button will
clear a single FILE, all FILES or a single
MEMORY location.
When the instrument is in the correct mode, a press
on this button will log the current valid reading into the
active memory location within the active fi le. The active location is automatically incremented, but if the
location is full then an error message is displayed indicating that the location or fi le is FULL. It is also used to
enter the probe code into the internal memory.
H
Note:
For correct button sequences see chapter 5 “Operation”.
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Operation 5
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Page 32
Operation
Switching on
5.1 Switching on
– Press ON/OFF.
The instrument switches on in the normal Measurement mode and will operate according to previously
set parameters. A SET PROBE routine should be carried out before use (see section 5.5) The display will
show the conductivity of the material on which the
probe is placed or PROBE OFF METAL if the probe
is in air. The display also shows information such as
the operating frequency, measurement units, probe
code number, battery state and alarms (see below).
Also the word SET will appear on the bottom line if the
probe temperature has drifted +/–3 °C since the last
set routine was carried out. If the SET icon appears
then the set probe routine should be carried out to restore high accuracy measurement.
Example
Taking a reading of 60.5 % IACS (I) at a frequency of
500 kHz (H) with a probe whose code number is 5467.
At the bottom right a battery level of 50 % is indicated
and to its left the presence of the
upper alarm level has been exceeded.
Normal measurement display:
Display showing excessive temperature change. Set
probe routine must be carried out:
icon indicates the
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Switching off
Operation
5.2 Switching off
– Long press ON/OFF.
The instrument will beep twice if settings have been
changed and power down.
5.3 Changing working parameters
Follow the sequence in section 3.5.
H
Note:
The settings of some parameters are dependent on
others and if a confl ict is encountered error messages
will appear on the screen and/ or the instrument will
beep. Some are as follows:
With an 8 mm (two digit) probe code in place, you cannot select a frequency of 60 kHz (only useable with
12.7 mm probe). If it is attempted the instrument will
beep and not carry out the change. It is then necessary to move to the PROBE parameter and recall
the correct four digit code number appropriate to the
12.7 mm probe to be used.
When the set probe routine is being carried out, if the
wrong probe code is in place i.e. two digit number is
present (8 mm probe) when trying to set a 12.7 mm
probe which should have a four digit code number or
vice-versa. The display will show an error (see Figure below), and will prompt a press of the SET button
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Operation
Changing working parameters
which will move the display to the PROBE fi eld ready
to select the code number for the probe being set.
When the code number has been incremented to the
correct one, a press on the MENU button will take the
instrument back to the normal measurement display
which has the code indicated on the bottom line and
will show ERROR (see Figure below).
– To re-commence the set probe routine, once the
correct probe code has been entered, press SET.
5.4 Entering reference block
values
Before the AutoSigma 3000 DL can be set, the reference block values need to be entered. It is recommended that the STD blocks supplied with the unit are
used as these will provide the most effective and accurate setting. As an alternative user reference blocks
may be used, these will limit the instruments range
and can reduce accuracy.
Ensure that the instrument is set to the correct units
for the block values to be entered. If not change the
UNITS parameter value fi eld before moving to the STD
parameters and entering the block values. From the
normal measurement mode proceed as follows, e.g.
setting STD 1 (60.1) and STD 2 (8.91).
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Entering reference block values
Operation
StepKeyDisplay
1
Open the parameter
menu.
2
Step through the menu
to the STD 1 parameter.
3
Move across to the setting fi eld.
4
Decrement to required
level.
5
Return to parameter
fi e l d .
6
Step to the STD 2 parameter.
7
Move across to the setting fi eld.
StepKeyDisplay
8
Increment to required
level.
9
Return to normal measurement mode.
Normal measurement display
User reference blocks
Can be used to set the AutoSigma 3000 DL, provided
that
• STD 1 is within the range 30 to 63 % IACS,
• STD 2 is within the range 6 to 50 % IACS and
• STD 1 is at least 10 % IACS above STD 2.
The values are entered in the unit in the same way as
the STD blocks.
Considerations
If user reference blocks are used, accuracy can be
compromised and range limited.
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Operation
Entering reference block values
The absolute accuracy of the instrument will be dependent on the accuracy of the user reference blocks and
will no longer be to the accuracy stated in the “Specifi cations” chapter of these instructions. It is not recommended that measurements are made outside the
range of the two sample values; as the accuracy will
be totally dependent on the absolute accuracy of the
user reference blocks.
For the relative reading accuracy to be the same as
for GE Inspection Technologies STD blocks, the two
user reference block values must be accurate and lie
either side of the measurement range. e.g. If the measurement range is to be between 40 and 45 % IACS
then STD 1 should ideally be 50 % IACS or more and
STD 2 should be 35 % IACS or less.
It is possible to set the AutoSigma 3000 DL by using
one user reference block and one STD block, provided
that the above rules are complied with, the absolute
accuracy will again be dependent on the accuracy of
the user reference block.
5.5 Probe setting (SET PROBE)
Before the probe setting on the reference blocks can
take place, the value of the blocks must be entered in
the STD 1 and STD 2 menu slots in the units selected
(i.e. IACS or MS/m) The probe code must also be appropriate to the probe in use. Proceed following section 5.4 to set the reference block values. Then with
the instrument on and in the Measurement mode:
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Probe Setting (SET PROBE)
Operation
StepKeyDisplay
1
From Measurement
mode initiate probe setting.
2
Hold probe in the air to
set liftoff. Press SET and
wait for sounder to beep.
3
Move probe onto the
STD 1 block. Press SET
and wait for sounder to
beep.
4
Move probe onto the
STD 2 block. Press SET
and wait for sounder
to beep, then remove
probe.
H
Notes:
Instrument will
return to the Measurement mode automatically, ready
to take readings.
If the calibration process has been interrupted during
the procedure the system will time out (indicated by
fi ve short beeps) after approximately 6 seconds and
return to the measurement mode with the setting factors unaltered.
If the blocks are used in the wrong sequence or the
probe has not contacted the STD’s correctly, the
display will indicate VALUE OUT OF RANGE SEQUENCE WILL RESTART the procedure will then
restart at step 1 as in the table above. This setting
procedure can be aborted at any time by pressing the
MENU button.
Because the air temperature can be different from the
STD sample temperature, it is recommended that the
probe is placed on the STD, for approximately 10 seconds prior to the set procedure and held on each block
for 5 seconds before SET is pressed (steps 3 and 4
above). By allowing the probe temperature to settle to
that of the STD blocks optimum setting is ensured.
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Operation
Taking a conductivity measurement
5.6 Taking a conductivity
measurement
Ensure the instrument is on and in Measurement
mode see section 5.1. Carry out set probe routine as in
sections 5.4 and 5.5.
With the probe in air the display should be as below.
With (H) if 500 kHz is selected or (L) if 60 Hz is selected. The battery indication should show some content,
and if the icon shows empty new batteries should be
fi t t e d .
The instrument is now ready to take a measurement.
The probe should be at the same temperature as the
material to be measured, if there is a difference the
probe and STD blocks should be allowed to stabilise
on the surface of the material to be measured. The set
probe routine should then be carried out at the temperature the measurements are to be taken at.
Place the probe on the surface of the material to be
measured, making sure it is as fl at as possible on the
surface and not overhanging the edge, the display will
then indicate the conductivity in the units selected.
If the material’s ambient temperature drifts beyond
+/–3 °C the display will indicate that a probe set routine is advisable. (SET will appear on the bottom line
of the display).
If measurements are to be carried out on round bars
or curved surfaces the correct probe and guide should
be used for ease of use and accuracy of results.
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Data logging (internal)
Operation
Thin sections may be measured using the high frequency 500 kHz range. Surface unevenness and
non-metallic coatings of up to 0.020" (0.5 mm) are
compensated for in the measurement system of the
12.7 mm probe, and 0.010" (0.25 mm) with the 8 mm
probe. If, however, the probe is too far from the surface
PROBE OFF METAL will be displayed.
H
Note:
Correction tables for curved surface measurement
etc., are given in application note AN 9603 (available
from GE Inspection Technologies).
5.7 Data logging (internal)
Clearing the entire memory
With the instrument in the Measurement mode:
StepKeyDisplay
1
Open the fi le menu.
2
If XX is 0, memory is
already cleared. If not
press arrow keys repeatedly until the adjoining is
displayed.
3
Clear the fi les with a
long press on the C key.
4
Return to Measurement
mode.
If the number of data fi les require setting follow section 5.7 from the point where the number of fi les is displayed as 0.
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Operation
Data logging (internal)
Setting the number of data fi les
H
Note:
This can only be performed when the entire memory
is clear.
With the instrument in the Measurement mode:
StepKeyDisplay
1
Open the fi le menu.
2
Select the number of
fi les required (e.g. 20).
3
Return to Measurement
mode.
H
Note:
The number of available fi les is 1 to 50. Incrementing or decrementing past these points will result in
the number reverting to the other end of the available
range. The number of storage locations in the fi les will
depend on the number of fi les selected – see the following fi le capacity table.
Data logging
Storage fi le capacity table
No of fi les Locations No of fi les Locations
01 500 26 19
02 250 27 18
03 166 28 17
04 125 29 17
05 100 30 16
06 83 31 16
07 71 32 15
08 62 33 15
09 55 34 14
10 50 35 14
11 4 5 36 13
12 41 37 13
13 38 38 13
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Page 41
Data logging (internal)
Operation
No of fi les Locations No of fi les Locations
14 3 5 39 12
15 33 40 12
16 31 41 12
17 29 42 11
18 27 43 11
19 26 44 11
20 25 45 11
21 23 46 10
22 22 47 10
23 21 48 10
24 20 49 10
25 20 50 10
Logging in a reading (general)
H
Note:
The number of fi les must have been set and there
must be space left in fi le locations for logging to be
successful, if not appropriate messages will appear on
the display.
– With a reading on the display (e.g. 99.8) that is to
be logged press SEND.
If no logging has taken place since the number of fi les
have been set, the reading will be logged into location 1 of fi le 1 (Unless a fi le location is deliberately
selected for the reading). If previous logging has taken
place the next location will automatically be selected
to receive the new log.
Whilst logging is taking place the display will indicate:
When complete the display will revert to reading 99.8
and the next location 2 will then be automatically selected for further logging.
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Operation
Data logging (internal)
Logging can then be repeated until fi le 1 is full. When
this occurs the display will respond with:
When this occurs another fi le must be selected for
logging to continue. If during logging a fi le location is
selected that already contains a stored value then the
display will indicate this as follows:
When this occurs another fi le or fi le location must be
selected for logging to continue, or the fi le location
cleared. Press MEM to display the contents then a
long press on C to clear the fi le.
Selecting a fi le for logging
With the instrument in the Measurement mode:
StepKeyDisplay
1
Open the fi le menu.
2
Select the next fi le required (e.g. 2).
3
Return to Measurement
mode.
With the instrument returned to the Measurement
mode further logging or measuring can take place.
Further logged readings will automatically be placed in
the next available empty fi le location.
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Data logging (internal)
Operation
Clearing a fi le
With the instrument in the Measurement mode:
StepKeyDisplay
1
Open the fi le menu.
2
Select the fi le to be
cleared. If it is not the
current fi le (i.e. the one
displayed), press arrow
keys repeatedly.
3
Clear the displayed fi le.
4
Return to Measurement
mode.
With the instrument returned to the Measurement
mode further logging or measuring can take place.
Further logged readings will automatically be placed in
location 1 of FILE YY.
Accessing a fi le location containing stored
data
With the instrument in the Measurement mode:
StepKeyDisplay
1
Open the fi le menu.
2
Select the fi le to be accessed.
3
Return to Measurement
mode.
4
Display the content from
the current fi le position.
5
Select the required position (e.g. 14) and read
the content: 67.1.
6
Return to Measurement
mode.
Normal measurement display
Normal measurement display
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Operation
H
Note:
Whilst selecting locations steps 4 and 5 you may move
to another fi le simply by pressing the FILE button and
incrementing to the required fi le. Press FILE again to
revert to location selection.
– Alternatively if you wish to clear this location contin-
ue from step 4.
– Long press C will clear the location and the display
will show:
Customising the operating mode
5.8 Customising the operating
mode
The operating mode of the AutoSigma 3000 DL can
be customised to suit a particular measurement procedure. Menu items can be selected and given a value
or a mode, a complete menu can then be stored, this
customised menu can then be recalled when required.
The AutoSigma 3000 DL may be set to User mode
where the menu cannot be selected or changed, or
Supervisor mode where the menu is fully functional.
This is achieved by sending instructions from a PC to
the AutoSigma 3000 DL.
H
Note:
This indicates that fi le XX location FF is empty and
can now accept a logged reading.
– To log to this location, press FILE again to revert to
location selection.
Issue 04, 06/2007 AutoSigma 3000
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When in User mode the reset switch on facility is not
available.
Page 45
Customising the operating mode
Operation
Storing a customised mode
– In order to store a customised operating mode, se-
lect MENU then select STORE with the arrow keys.
– In the SET mode, select the required store location
(1 to 10) with the arrow keys and apply a long press
to SEND.
Two beeps will confi rm that the MENU SETTINGS
have been stored.
Recalling a customised mode
– To recall a customised operating mode select
RECALL from the menu with the arrow keys.
– In the SET mode select the required location (1 to
10) with the arrow keys and apply a long press to
SEND.
Two beeps will confi rm that the MENU SETTINGS
have been recalled.
Setting the operating mode to User or
Supervisor
The AutoSigma 3000 DL normally works in the Supervisor mode where the menu is fully functional, it is
supplied set to this mode, the instrument may also be
set to User mode where the menu cannot be selected
or changed.
To change between the User or Supervisor mode the
unit should be on and in the read mode and connected
to a suitable PC, via cable part no 33A146 (PC serial
cable).
H
Note:
To access the AutoSigma 3000 DL using a PC running
windows go into “Terminal” program (usually in accessories group) choose “Settings”; “Communications” in
the comms box select the COM port connected to the
AutoSigma 3000 DL (COM1 or COM2) then set baud
rate 1200; data bits 8; stop bits 1; parity none; fl ow
control; Xon/Xoff; Leave “parity check” and “carrier detect” unselected.
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Operation
Hit OK. On pressing return on the keyboard the screen
should respond with >.
– To select User type USER (slowly; 0.5 sec between
characters) and press return; the unit will now be in
the User mode and can be disconnected from the
PC.
In User mode the menu cannot be selected and the
settings present when the AutoSigma 3000 DL is converted will be retained.
– To select Supervisor, with the PC connected; type
SUPER (slowly) and return; the unit will now be in
Supervisor mode, the unit may now be disconnected from the PC.
Customising the operating mode
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Page 47
External data handling devices 6
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Page 48
External data handling devices
Connection
6.1 Connection
The 7 way Lemo Data Output socket is provided for
connection to Data Handling Devices, Printers and
PCs.
The communication link protocol depends on the cable
connected using an ASCII Data transfer. A Mitutoyo
data cable is automatically sensed so an external Data
Logger can request a reading.
If printers or PCs etc that use serial RS-232 format are
to be connected, converter leads are required. Product
codes: 47A004 (PC), 47A002 (Printer)
Signal identifi cation of connections to the 7 Pin LEMO
Data Output socket.
Pin 1 0 V
Pin 2 +5 VA
Pin 3 TXDATA1
Pin 4 ~CTSREQ
Pin 5 RXCLOCK
Pin 6 0 V
Pin 7 ~MITSEL
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Sending serial data to an external device
External data handling devices
6.2 Sending serial data to an
external device
Connect the external equipment to the instrument via
the correct interface cable and switch it on.
The AutoSigma 3000 DL will recognise the connection
and change the use of the SEND button from internal
data logging to external serial data transfer.
Individual fi les or the entire memory can be transmitted, but only fi les containing stored data will be transferred i.e. fi le active or fi le full.
A long press on the SEND button is used to initiate
data out transfer with the File menu set to a single fi le
or ALL FILES.
H
Note:
For correct handling of transmitted data PCs and printers should be set to Xon / Xoff protocol.
Sending a single fi le
With the instrument in the Measurement mode:
StepKeyDisplay
1
Open the fi le menu.
2
If fi le to be transferred is
not current (i.e. the displayed one), select the
fi le required (e.g. 2).
3
Transfer the fi le with
a long press; after the
press the display will indicate the transfer.
When transmission is complete the display will revert
to the fi le selection.
H
Note:
To terminate a data transfer when in progress press
SEND. Display will respond for a short period with
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External data handling devices
then revert to the fi le selection.
Sending the entire memory
With the instrument in the Measurement mode:
Sending serial data to an external device
After transmission the display will return to ALL FILES.
H
Note:
To terminate a data transfer when in progress press
SEND. Display will respond for a short period with
StepKeyDisplay
1
Open the fi le menu.
2
Press the arrow keys
repeatedly to select all
the fi les.
3
Transfer the fi les with
a long press; after the
press the display will indicate the transfer.
Issue 04, 06/2007 AutoSigma 3000
6 - 4
then revert to fi le selection ALL FILES.
H
Note:
During data transfers all instrument operations are
suspended.
Page 51
Sending serial data to an external device
External data handling devices
Report format of transferred data
Data transmitted to a serial printer is formatted as the
example shown below, and is suitable for any IBM
compatible serial printer.
Sections of the formatted report
Instrument Banner Instrument name.
File Header Various Fields including the fi le
number for the data to follow.
Readings A list of the measurement values
and their locations.
Statistics Various statistics
then repeated for each fi le transferred.
END OF REPORT message.
Example of a report
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6 - 6 Issue 04, 06/2007 AutoSigma 3000
Page 53
Specifi cations 7
AutoSigma 3000 Issue 04, 06/2007 7 - 1
Page 54
Specifi cations
Conductivity Range 0.8 % IACS to 110 % IACS (0.45 to 64 MegaSiemens/m)
Operating Frequencies 60 and 500 kHz Sinewave
Resolution 10 to 110 % IACS, readings 10.0 to 110.0 (1 dec. place)
0.8 to < 10 % IACS, readings 0.80 to 9.99 (2 dec. places)
Accuracy [+/–0.5 % IACS at 100 % IACS reducing to +/–0.1 % IACS at 10 % IACS
+/–0.1 % IACS below 10 % IACS] at 20 °C
[+/–0.8 % IACS at 100 % IACS reducing to +/– 0.2 % IACS at 10 % IACS
+/–0.2 % IACS below 10 % IACS] over range 0 °C to 40 °C with probe in contact
with metal
Probes 12.7 mm diameter, for 60 kHz, and 500 kHz. 8 mm probe operates at 500 kHz only.
Probes are interchangeable with simple customer re-setting procedure.
The probe fi eld is sharply defi ned and enables accurate measurements to be made
even with the probe in line with the extreme edge of the metal.
Special probe guides are available for measuring curved surfaces. The data for
three probes of each size can be stored in the probe data fi eld allowing for alternative probe usage.
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Specifi cations
Lift-Off 12.7 mm probe compensated to 0.020" (0.5 mm), 0.010" (0.25 mm) on 8 mm probe.
At 20 °C display changes to PROBE OFF METAL when the compensated probe LiftOff distance has been exceeded.
Conductivity Standards Attached to case top, removable for value verifi cation, and temperature sinking to
material to be measured.
Display Graphics LCD 122 × 32 pixels with electroluminescent backlight
Backlight has on and off modes.
Alarm Triggered at upper and lower selected values, indicated by LCD display icons
Calibration Automatically set when set probe sequence is carried out with the probe placed in
turn on the calibration blocks. The probe thermistor detects when a change in temperature of more than 3 °C has occurred since the last calibration and signals the
necessity for re-calibration by illuminating SET at the bottom of the display.
Temperature Measurement By probe thermistor (accurate to 0.5 °C), range 0 °C to +50 °C (32 °F to 122 °F)
The display shows the temperature at which the last measurement was taken.
Automatic Tempera t u r e Conductivity measurements are corrected to the 20 °C value when measured at
Compensation other temperatures.
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Specifi cations
Data Logger Memory Up to 500 readings, up to 50 fi les (DL model)
Serial Port RS-232 serial LEAD available for serial printer or PC etc.
Compatible with KB DMEDL software
Shoulder Bag To protect unit for mobile applications
Packall Case Small light rigid case. 9" × 12.25" × 4.25" (229 × 311 × 108 mm, H × W × D). To hold
unit, probe, probe cable, and operating manual, with further space for extra accessories
Power Source 3 × 1.5 V AA size alkaline batteries, approx. 100 hrs life without backlight
Auto Switch Off If the instrument is not used for “n” minutes, or if the battery falls to an unusable low
level, the instrument switches off automatically (“n” is user selectable).
Case High impact polycarbonate, splash proof
6.5" × 3.0" × 1.6" (165 × 76 × 41 mm, H × W × D)
Weight 14.5 oz (0.4 kg) including batteries
Environmental Range 0 to 95 % relative humidity, 0 °C to +50 °C for reliable operation
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Page 57
Maintenance and care 8
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Page 58
Maintenance and care
Cleaning
8.1 Cleaning
Use a soft cloth moistened with a soap or mild detergent to clean the case, buttons and display window.
A
Attention:
Do not use abrasive cleaning agents of any kind as
these will erase the legend graphics and scratch the
display window.
Do not use solvent cleaners of any kind, as they may
cause irreparable damage to case and contents.
8.2 Care of Batteries
H
Note:
On removal of the batteries the instruments will retain
its settings and stored data (DL model). Memory storage does not rely on battery power (make sure the
instrument is switched off before removal of the batteries).
When the batteries no longer have enough power to
drive the instrument, remove and dispose of them correctly. Do not leave discharged batteries in the battery
holders.
If the instrument is to be stored for some time without
being used, remove batteries before storing.
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Appendix 9
AutoSigma 3000 Issue 04, 06/2007 9 - 1
Page 60
Appendix
EC Declaration of Conformity
9.1 EC Declaration of Conformity
We declare that the AutoSigma 3000 DL Conductivity
Meter conforms to the following European directive:
• 89/336 (Electromagnetic compatibility)
The conformity of the above-mentioned product with
the regulations of the directive 89/336 is proven by the
observance of the standard specifi cations
• EN 50081-1 Emissions
• EN 50082-1 Immunity
9.2 Manufacturer / Service address
The AutoSigma 3000 DL is manufactured by:
GE Inspection Technologies Ltd
129-135 Camp Road
St Albans, Hertfordshire, AL1 5HL
GREAT BRITAIN
Phone +44 1727 795500
Fax +44 1727 795400
The AutoSigma 3000 DL is manufactured according
to state-of-the-art methods using high-quality components. Thorough in-process inspections or intermediate tests and a quality management system certifi ed to
DIN EN ISO 9001 ensure an optimum quality of conformance of the instrument.
Should you nevertheless detect an error on your instrument, switch the instrument off. Inform your local
GE Inspection Technologies Service indicating the error and describing it.
Keep the shipping container for any repairs possibly
required which cannot be made on the spot.
Issue 04, 06/2007 AutoSigma 3000
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Page 61
Manufacturer / Service address
Appendix
If there is anything special that you would like to know
about the use, handling, operation and specifi cations
of the instruments, please contact your nearest
GE Inspection Technologies representative or directly:
Great Britain
GE Inspection Technologies Ltd
129-135 Camp Road
St Albans, Hertfordshire, AL1 5HL
GREAT BRITAIN
Phone +44 1727 795500
Fax +44 1727 795400
USA
GE Inspection Technologies, LP
50 Industrial Park Road
Lewistown, PA 17044
USA
Phone +1 717 - 242 03 27
Fax +1 717 - 242 26 06
Germany
GE Inspection Technologies GmbH
Robert-Bosch-Straße 3
50354 Hürth
GERMANY