Accud CF1250 User manual

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Contents
1 Introduction 1
2 Description 2
2.1 Gauge 2
2.2 Display 2
2.3 Specifications 3
3 Operation 3
3.1 Power on/off 3
3.2 Measuring Procedure 3
4 Setup
4.1 Measurement Settings 8
4.2 System Settings 9
5 Calibration and Maintenance 11
5.1 Calibration 11
5.2 Maintenance 14
1 Introduction
Designed for non-destructive coating thickness
measurement, the models of the coating thickness gauge
is with built-in sensor. It works on the magnetic induction
principle and conforms to the following industrial norms
and standards: GB/T 4956, JB/T 8393, ISO 2178, ASTM
B499
The Coating Thickness Gauge is suitable for
non-destructive, quick and precise coating thickness
measurement. Easy to handle they are the ideal
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instrument for the finishing industry, electroplating, ship
and bridge building, aircraft construction and the
engineering and chemical industry.
The Coating Thickness Gauge works on the
magnetic-induction principle for measuring the thickness
of non-magnetic coatings(such as paint, enamel, rubber,
aluminum, chrome, cupper, tin etc.) on magnetic metal
substrates(ferrous bases and steel, also on alloyed steel or
on hardened magnetic steel, but not on austenitic steel or
weak magnetic steel).
2 Description
2.1 Gauge
2.2 Displa (Fig.2-3)
Probe
LCD
Keypad
Fig. 2-1
Fig. 2-2
Up
Down
Power
/ Zero
Menu
Fig. 2-3
Battery
Measured
Point Mean
Value
Measured
Value
Mode
Single
Continue
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2.3 Specifications
Test Method: Magnetic induction
Measuring Range: 0~1250mm (0 ~50mil)
Resolution: 0 ~ 999μm: 0.1μm, ≥1000μm:
1μm
Accuracy: up to 100μm: ±2.5μm; 100 ~
1500 μm: ≤ 2.5 %
Data Memory: up to 500 readings.
Display: Graphic LCD with backlight
Operating temperature : 0 ~ 50°C
Dimension: 150X50.5X29 mm
Weight: 1 0 grs
3 Operation
3.1 Power on/off
Push until the power is turned on.
NOTE: If there are magnetic metals near the probe at the moment
of swatch on, the gauge will displa a alarm “Surround
Error!".Should take gauge far from magnetic metals and wait few
seconds it can go normal.
When the gauge is switched on, press a while to turn
the power off.
NOTE: This gauge can power off automaticall , if no an operation
for 3 minutes. Before turning off, it will sound for a few beep
prompt. If ou do not want to power off, simpl press an ke can
abort.
3.2 Measuring Procedure
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3.2.1 Parameters selection
First, confirm measuring parameters should suitable for
your requirements.
a) Measurement Mode.
There are two modes: Single Mode and Continuous
Mode . It's displayed in the upper left corner of the LCD
display.
It is usually to choose Single Mode, that is, when a
measurement is completed, you should lift the probe and
then the next point measurements. In this mode, the
measurement data can be stored automatically and
calculate mean value.
Select "Continuous Mode", you can slide the probe on
measuring surface for measurement continuously.
However, this mode will not perform the data storage and
statistical processing.
b) Measurement Units
The instrument has two kinds of units available for
selection: μm (microns) and mils (micro inch).
3.2.2 Accurac verification
a) Using a calibration substrate and Standard thickness foil
to verificate the instrument. Generally if the
measurement
error is not out of the accuracy of specifications it can be
used normally.
Methods:
Select a Single Mode and μm, press the probe on the
surface of the substrate, push for zeroing. Place a foil
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Fig. 3-1
on the substrate to measure. Comparing the measured
value and the standard value of the foil to obtain the
measurement error.
b) If the error is large, the calibration is need for, (see 5.1
Calibration).
3.2.3 Test piece read
a) Test-piece should be ferromagnetic base material is
coated with a non-magnetic coating;
b) The measuring surface should be regular, smooth;
c) The thickness of the test piece is not less than 2mm;
d) The measuring surface should be clean and free of
grease.
3.2.4 Measurement
Press the probe perpendicular to
the surface of the test piece (Fig.
3-1).
When the thickness values is
obtained, a sound is uttered.
In Single Mode, then you can lift
the instrument to read, or do the
next measurement.
In Continuous Mode, then you
can move the probe to the next
measurement position.
NOTE:
In Single Mode, ou need to lift the
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Mean
Value
Measured
Points
Measuring
value
instrument awa from the test surface 10cm or more, and the
time interval between two measurements should be no less than
1 second.
Use Continuous Mode often, may cause the probe wear
and galling test surface is easy. We therefore recommend
to use Single Mode for normal measurements, if not
necessary.
3.2.5 Data read and browse
a) Read measuring value
Read the measured value from the LCD. (Fig. 3-2)
NOTE:
The maximum points for the statistical set is 9. It will start the
next statistics set automaticall if more than 9 points. Enter the
menu or push will renew statistical set and average.
b) Data Browse
In Single Mode, each measuring value is stored
automatically
In the
measuremen
t mode, you
can press
to
Fig.3-3
Thickness
No.
Fig.3-2
Fig. 4-1
browse them. (Fig. 3-3)
Press for page up and down.
Press to exit the browser and return to measurement
mode.
NOTE: The gauge can store up to 500 of measurement value. The
greatest number is the most recent measurement.
After the data store reaches 500, the following data will be stored
and pile out the first data automaticall . Therefore, record the
useful data as soon as possible for not to lose.
3.2.6 Passing measurement
a) In the Single Mode, you can also be set upper and lower
limits for passing judgment and screening tests.
b) When the measured value exceeds the tolerance, it will
sound indication.
c) To set upper and lower limits, see 4.1.2 Upper and
Lower Limits.
4 Setup
The gauge uses a menu for
setting the parameters or
the functions.
The structure of setup
menu is shown in Fig 4-1.
In the measurement mode,
press the "Menu" to
enter the setup menu.
Press the "Up" or

COATING THICKNESS GAUGE
CF1250
OPERATION MANUAL
www.accud.com

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Fig. 4-2
"Down" ("Up" or "Down" the same below)
can select a item, press "OK" to enter the selected
item.
In the menu settings, press to exit or return to the
previous menu. You can also press longer to exit
setup and return to the measurement mode.
4.1 Measurement Settings
Select Measure to enter the
measurement parameter
settings.
Measurement parameters
include: measurement mode
(Mode), upper and lower limit
settings (Tolerance) and
calibration (Calibration).
4.1.1 Measuring mode
a) Press to select Mode, press ;
b) Press to select Single (Single Mode) or Continue
(Continuous Mode);
c) Press to save and return to the measurement
mode;
d) Press to return to the measurement mode and not
save. (Fig. 4-2)
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Fig.
4-3
4.1.2 Upper and lower limit settings
If the limits are set up and turn on, when the measuring
value exceeds the limit, the
instrument will audible alarm.
(Fig. 4-3)
a) Press to select
Tolerance (upper and lower
limit settings), press to
enter;
b) Press set to "On" or
"Off";
c) Press to select Upper
limit or Lower limit, press
to enter to input the upper
and lower limits;
d) Press to increase or
decrease the setting, press to move to the next digit;
Note: The upper limit must be greater than the lower
limit, otherwise the setting is invalid.
4.1.3 Calibration
(Detailed calibration procedure See 5.1)
4.2 S stem Settings
Select System, can enter the system settings.
System setting parameters include: unit (Unit), backlight
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Fig. 4-4
Fig. 4-5
and key tone (Sound).
4.2.1 Unit
a) Press select Unit,
press ;
b) Press to select "μm" or
"mils";
c) Press to save the settings
and return to measurement
mode;(Fig. 4-4)
4.2.2 Backlight
Set backlight to "Off" will be no backlight, set to "On", the
backlight will be opened
constantly.
NOTE: Setting the backlight to "On" is
not recommended for saving batter
power. (Fig. 4-5)
a) Press to select Backlight,
press ;
b) Press to select "Off" or
"On";
c) Press to save the settings
and return to measurement
mode;
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Fig. 4-6
4.2.3 Ke Tone
(Fig. 4-6)
a) Press to select Sound
(touch-tone), press ;
b) Press to select "On"
(Turn on key tones) or "Off"
(turn off the key tone);
c) Press to save the
settings and return to
measurement mode.
5 Calibration and Maintenance
5.1 Calibration
For ensuring measurement accuracy, you may need
calibrate to correct the error caused by wear and tear or
changes in environment etc..
Press to enter the menu and select Measure, press
to select Calibration, you can enter the instrument
calibration interface.
Three calibration methods are provided: Zero calibration
(Zero), One-point calibration (1st) and Two-point
calibration (2nd).
NOTE: Before One-point calibration zero calibration must be
carried out. Before the Two-point calibration, the
Zero-calibration and One-point calibration must be carried out.
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Fig 5-1
5.1.1 Zero Calibration
Zero calibration may be in two ways: Zeroing and Menu
zero calibration.
1) Zeroing
a) In single mode, measure on the substrate directly,
display the results "xx μm";
b) Press to clear display as "0.0 μm".
NOTE:
i) If "xx μm" is greater than 80μm, ou cannot zero it directl ,
Menu zero calibration is needed.
ii) Repeating the above a), b) as a few times ma increase the
accurac of the calibration.
2) Menu Zero Calibration (Fig.
5-1)
a) Enter Menu and select
Calibration, then select Zero (zero
calibration), press , wait for
showing Acting;
b) Measure on the substrate
directly, measuring 3 to 5 times or
more can ensure accuracy;
c) Press to save the
calibration values and remain in the calibration interface.
Then press can finish the Zero calibration and return;
d) If press only, will be not save the calibration and
return.
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Fig. 5-2
5.1.2 One-point calibration
Before One-point calibration
perform, must first do
Zero-calibration.(Fig. 5-2)
a) Press to select the 1st
(One-point calibration), "0000.0"
will be shown;
b) Press to enter the standard
value of foil;
c) Press to adjust the value,
press to move to the next
digit, Input the standard thickness
value of the foil, (press to
return to the initial setting value).
Then, press and waiting for
showing Acting;
d) Measuring on the standard thickness foil for 3 to 5
times;
e) Press to save the calibration values and remain in
the calibration interface, you can proceed to the next one
calibration;
f) Or press to not save the calibration and return.
5.1.3 Two-point calibration
Before Two-point calibration, first the Zero-point
calibration and the Two-point calibration must be done.
And thickness of the standard foil must be greater than in
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Fig 5-3
the One-point calibration.(Figure 5-3)
a) Press to select the 2nd (Two-point calibration),
"0000.0" will be shown;
b) Press to enter the standard value of foil;
c) Press to adjust the value, press to move to
the next digit, Input the standard thickness value of the
foil, (press to return to the initial setting value). Then,
press and waiting for showing Acting;
d) Measuring on the standard
thickness foil for 3 to 5 times;
e) Press to save the
calibration values and remain in
the calibration interface, you can
proceed to the next one
calibration;
f) Or press to not save the
calibration and return.
5.2 Maintenance
1) Avoid dirt, dust, humidity,
corrosive substances of chemical
environments. Prevent the
instrument has been dropped!
2) After use, place the instrument back into the protective
device.
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3) Avoid strong sunlight and temperature fluctuations,
which would adversely affect the measurement results.
4) The instrument enclosure resistant to most chemical
cleaners, use a soft cloth to clean the instrument.
5) Only keep it clean probe to measure the accurate results,
so the probe regularly inspect and clean them paint, iron
and other residues.
6) Standard thickness foil is very important in the calibration.
So if the standard pieces appear worn, bent or damaged,
contact your dealer to replace.
) If the gauge is not working, please do not disassemble it.
Should send it to the professionals or back to the factory for
repair.