HAIRUIS P1 User manual

Coating Thickness Gauge
User Manual
V1.7
P1 P1S P2 P3 P4

1. Introductions--- - --- - --- - --- - - -- - 1
1.1 Features--- - --- - --- - - --- - --- 1
1.2 Application------------------1
1.3 Principle of Measurement-------2
1.4 Supply Information------------2
1.5 View------------------------3
1.6 Specifications----------------6
2. Use The Gauge------------------8
2.1 Replacing the Battery---------8
2.2 Basic Measurement Step-------8
2.3 User Interface- --- - --- - - --- - --9
2.4 Measure Mode---- - --- - --- - --- 10
2.5 Group Mode-- - -- - - --- - --- - --- 10
2.6 Statistics--------------------11
Table of Contents
2.7 Probe Mode---------------------------12
2.8 Storage-------------------------------12
2.9 Recall and Delete Readings--------------12
2.10 High and Low Limit Alarm--------------13
2.11 Unit--------------------------------14
2.12 Speed-----------------------------14
2.13 Data Download-----------------------15
2.14 Auto Power off-----------------------15
2.15 Measurement Accuracy-----------------15
3. Factors of Affecting Measurement Accuracy-----16
4. Calibration--------------------------------------17
4.1 Zero Calibration-------------------------------18
4.2 Multi-point Calibration------------------------18
4.3 Shot-blasted Surfaces----------------------------19
4.4 Clear Calibration----------------------------------19
5. Trouble Shooting-----------------------------------20

1. Introductions
This compact gauge can be used for non-destructive coating thickness measurement of non-magnetic coatings,
e.g. paint, enamel, chrome on steel, and insulating coatings, e.g. paint and anodizing coatings on non-ferrous
metals.
1.1 Features
128*128 dot matrix LCD display, standard menu operations;
Two measure mode: single and continuous;
Two group mode:direct(DIR) and general(GEN), readings will be lost when power off in direct mode, and not be
lost in general mode. Readings can be stored for each group;
Zero point calibration and multi-point calibration(up to 4 points) for each group;
User can recall, delete specified readings, or delete group readings;
Statistics display: mean, minimum, maximum and standard deviation;
Three probe mode:auto, magnetic and eddy current;
User can set high or low limit alarm for each group;
Power off automatically;
USB interface to data transmission;
Low battery and error indication ;
1.2 Application
This gauge is designed for non-destructive, fast and precise coating thickness measurement. The principal
applications lie in the field of corrosion protection. It is ideal for manufacturers and their customers, for offices
and specialist advisers, for paint shops and electroplaters, for the chemical, automobile, ship building and
aircraft industries and for heavy engineering. It is suitable for laboratory, workshop and outdoor use.
1

1.3 Principle of Measurement
The coating thickness gauge work either on the magnetic induction principle or on the eddy current principle,
depending on the type of probe used. This gauge has internal F probe and N probe.
F probe work on magnetic induction principle and should be used for non-magnetic coatings such as aluminium,
chrome, copper, zinc, paint and varnish,enamel, rubber etc., on an iron or steel substrate; It is also suitable for
alloyed and hardened magnetic steel(however, not suitable for austenic steel).
N Probe work on the eddy current principle and should be used for insulating coatings e.g. paint, anodizing,
ceramics, etc., on all non-ferrous metals such as aluminium, copper, zinc die casting, brass etc. and on austenitic
stainless steels.
1.4 Supply Information
The package include:
Coating Thickness gauge
Substrate(Optional)
Standard foil(Optional)
CD and USB cable(Optional)
Two 1.5V AAA battery
User manual
2

Coatin gThic kness Tes ter
DIR
102
AUTO
Mean
Min
101um
100um
Max 103um
um
16
1
23
5
4
6
79
10
11
12
13
14
15
16
17
18 1 9
20
21
22
N
23
24
1.5 View
1.5.1 Applied to P1 and P1S
1.Current work group(DIR and
GENn,n=1-4)
2.High and low limit alarm
3.Probe mode:AUTO, MAG, EDDY
4.Measuring readings display
5.Statistics display
6.Auto-power off indication
7.USB connecting indication
8.Reserved
9.Unit(um、mm、mils)
10.Low battery indication
11.CAL-Calibration key
12.POWER on/off key
13. ZERO calibration key
14.UP key
15.DOWN key
16. LEFT key(menu、select、sure)
17.RIGHT key(cancel, exit, back,
backlight switch)
18.Probe
19.V groove
20.Standard foil
21.Substrate
22.Battery compartment
23.Substrate type(F: ferrous；N: non-ferrous)
24.USB interface 3
P1 or P1S

23
19
DIR
102
AUTO
Mean
Min
101um
100um
Max 103um
um
16 N
24
1.5.2 Applied to P2
1.Current work group(DIR and
GENn,n=1-4)
2.High and low limit alarm
3.Probe mode:AUTO, MAG, EDDY
4.Measuring readings display
5.Statistics display
6.Auto-power off indication
7.USB connecting indication
8.Reserved
9.Unit(um、mm、mils)
10.Low battery indication
11.CAL-Calibration key
12.POWER on/off key
13. ZERO calibration key
14.UP key
15.DOWN key
16. LEFT key(menu、select、sure)
17.RIGHT key(cancel, exit, back,
backlight switch)
18.Probe
19.V groove
20.Standard foil
21.Substrate
22.Battery compartment
23.Substrate type(F: ferrous；N: non-ferrous)
24.USB interface
4
1
5
4
6
7
11
12
16
17
18
20
21
9
10
13
14
15
23
P2-1
DIR
102
AUTO
Mean
Min
101um
100um
Max 103um
um
16 N
P2-2
Se e
P2 - 1
18
24

1.5.3 Applied to P3 and P4
1.Current work group(DIR and
GENn,n=1-4)
2.High and low limit alarm
3.Probe mode:AUTO, MAG, EDDY
4.Measuring readings display
5.Statistics display
6.Auto-power off indication
7.USB connecting indication
8.Reserved
9.Unit(um、mm、mils)
10.Low battery indication
11.Reserved
12.POWER on/off key
13. Reserved
14.UP key(or delete function)
15.DOWN key(or zero calibration)
16. LEFT key(menu、select、sure)
17.RIGHT key(cancel, exit, back,
backlight switch)
18.Probe
19.V groove
20.Standard foil
21.Substrate
22.Battery compartment
23.Substrate type(F: ferrous；N: non-ferrous)
24.USB interface
5
DIR
102
AUTO
Mean
Min
101um
100um
Max 103um
um
16 N
22
P3 and P4
123
4
5
6
7
9
10
12
14
15
16 1 7
18
19
20
21
23
24

Note:
The final specifications may be upgraded without notifying. For more details, please consult with yoursupplier.
Probe F Probe F
Me as uring principle Ma gne tic i ndu ction Eddy Current s
Measuring range
Accuracy
Resolution
Ca libration On e po in t to four point calibration, zero point calibration
Data group On e di rect group(readings not be stored to memory)
Four general groups(max. 320 readings for P1 and max. 2000 readings
for P1S be stored). NOTE: each group have individual statistics, alarm
limit settings and calibration
Statis tics N o. of readings, mean, minimum, maximum and standard d eviation
Un its um , mm, mils
Al ar m Us er c an set the high/low alarm limit
Al ar m icon displayed on LCD when over t he limit
Mi ni mu m curvature ra di us convex 5mm
Mi nimum cur vature ra dius con cave 25 mm
Minimum measuring area Diameter 20mm
Mi ni mum thickn es s of su bs trate 0.2mm 0.05mm
Ma xi mu m measuring rate Two re ad ings per second
Co mputer interface Do wnload data via USB
Power supply Two 1.5V AAA battery
Op eration environment Temperature:
0to 50℃(32 to 122℉)；humidity: 20% to 90%rh
St orage environment
Standard Compliance CE R OH S FCC ISO2178 ISO2360
Size 1 10mm×53mm×2 4mm(4.33"×2.09"×0.94")
Case Material AB S；92g(3.24 oz)
-1 0 to 60℃(14 to 140℉)
Temperature:
0u m~ 99 .9um(0.1um)
10 0um~999um(1um)
0 to 2 00 0u m (0 t o 78 .7mils) 0 to 2 00 0u m (0 t o 78 .7mils)
(2 .5%+1um)
±(2.5%+0.039mils)
±(2 %+1um)
±(2%+0.039mils)
±
1.6 Specifications for P1 and P2
6
Probe F Probe N
Ma gn etic i nd uc ti on E dd y Curren ts
On e po in t to four point calibration, zero point calibration
On e di rect group(readings not be stored to memory)
Four general groups(max. 2000 readings will be stored automatically)
NOTE: each group have individual statistics, alarm limit settings and
ca li bration
No. of readings, mean, minimum, maximum and standard deviation
um , mm, mils
Us er c an set the high/low alarm limit
Al ar m icon displayed on LCD when over t he l imit
5m m
25 mm
Diameter 20mm
0. 2m m 0. 05 mm
Two re ad ings per second
Do wnload data via USB
Two 1.5V AAA battery
0 to 5 00 0u m (0 t o 19 6. 8m il s) 0 to 3 00 0u m (0 t o 11 8. 1m il s)
(2 %+1um)
±(2%+0.039mils)
±(2 %+1um)
±(2%+0.039mils)
±
P1 P2
Product Code
Probe
>1 00 0um(0.01mm)
0u m~ 99.9um(0.1um)
10 0um~999um(1um)
>1 00 0um(0.01mm)
0u m~ 99 .9um(0.1um)
10 0um~999um(1um)
>1 00 0um(0.01mm)
0u m~ 99 .9um(0.1um)
10 0um~999um(1um)
>1 00 0um(0.01mm)
Temperature:
0to 50℃(32 to 122℉)；humidity: 20% to 90%rh
CE R OH S FCC ISO2178 ISO2360
11 0mm×53mm×24m m(4.33"×2.09"×0.9 4")
AB S；92g(3.24 oz)
-1 0 to 60℃(14 to 140℉)
Temperature:
1User can
choose
different
measure
range from
2500um
to 10000um
1
P1S
Probe N Probe N
Ed dy Cu rre nts
Ma gne tic i ndu ction
0. 05mm
0. 2m m

Note:
The final specifications may be upgraded without notifying. For more details, please consult with yoursupplier.
Probe F Probe N
Me as uring principle Ma gn etic i nd uc ti on E dd y Cu rren ts
Measuring range
Accuracy
Resolution
Ca libration On e po in t to four point calibration, zero point calibration
Data group On e di rect group(readings not be stored to memory)
Four general groups(max. 200 readings will be stored automatically)
NOTE: each group have individual statistics, alarm limit settings and
ca li bration.
Statis tics N o. of readings, mean, minimum, maximum and standard d eviation
Un its um , mm, mils
Al ar m Us er c an set the high/low alarm limit
Al ar m icon displayed on LCD when over t he limit
Mi ni mu m curvature ra di us convex 5mm
Mi nimum cur vature ra dius con cave 25 mm
Minimum measuring area Diameter 20mm
Mi ni mum thickn es s of su bs trate 0.2mm 0.05mm
Ma xi mu m measuring rate Two re ad ings per second
Co mputer interface Do wnload data via USB
Power supply Two 1.5V AAA battery
Op eration environment Temperature:
0to 50℃(32 to 122℉)；humidity: 20% to 90%rh
St orage environment
Standard Compliance CE R OH S FCC ISO2178 ISO2360
Size 1 14mm×54mm×2 5mm(4.49"×2.13"×0.98")
Case Material AB S；96g(3.78 oz)
-1 0 to 60℃(14 to 140℉)
Temperature:
0u m~ 99 .9um(0.1um)
10 0um~999um(1um)
0 to 1 50 0u m (0 t o 59 mi ls ) 0 to 1 50 0u m (0 t o 59 mi ls )
(2 %+1um)
±(2%+0.039mils)
±(2 %+1um)
±(2%+0.039mils)
±
1.7 Specifications for P3 and P4
7
Probe F Probe N
Ma gn etic i nd uc ti on E dd y Curren ts
On e po in t to four point calibration, zero point calibration
On e di rect group(readings not be stored to memory)
Four general groups(max. 2000 readings will be stored automatically)
NOTE: each group have individual statistics, alarm limit settings and
ca li bration
No. of readings, mean, minimum, maximum and standard deviation
um , mm, mils
Us er c an set the high/low alarm limit
Al ar m icon displayed on LCD when over t he l imit
5m m
25 mm
Diameter 10mm
0. 2m m 0. 05 mm
Two re ad ings per second
Do wnload data via USB
Two 1.5V AAA battery
0 to 5 00 um ( 0 to 1 9. 68 mi ls ) 0 to 5 00 um ( 0 to 1 9. 68 mi ls )
(1 %+1um)
±(1%+0.039mils)
±(1 %+1um)
±(1%+0.039mils)
±
P3 P4
Product Code
Probe
>1 00 0um(0.01mm)
0u m~ 99.9um(0.1um)
10 0um~999um(1um)
>1 00 0um(0.01mm)
0u m~ 99 .9um(0.1um)
10 0um~999um(1um)
0u m~ 99 .9um(0.1um)
10 0um~999um(1um)
Temperature:
0to 50℃(32 to 122℉)；humidity: 20% to 90%rh
CE R OH S FCC ISO2178 ISO2360
11 4mm×54mm×25m m(4.49"×2.13"×0.9 8")
AB S；96g(3.78 oz)
-1 0 to 60℃(14 to 140℉)
Temperature:

Note：
1. If a suspicious readings is measured, user can delete it through pressing the UP key once.
Note: 1. If displayed, the battery is OK. Or if displayed, the battery capacity is low, and measurement will
be not reliable, and you need to replace the battery.
2. The gauge will work in factory default settings for the first time, including single measure mode, AUTO probe
mode, direct group mode(DIR) etc..
3. When power on, if in direct group mode(DIR), the readings display area is empty, or if in general group mode
(GENn, n=1 to 4), it will display the last readings and statistics value measured before power off last time.
2. Use the Gauge
If you use the gauge for the first time, please read the chapter 3(factors of affecting measurement accuracy).
2.1 Replacing the Battery
Place the gauge upside down on a suitable surface, remove the screws from the battery compartment with a
crosstip screwdriver, raise the lid of the compartment, remove battery, insert new battery according to the
positive and negative poles and close the lid and fasten with screws.
2.2 Basic Measurement Step
Step 1. Prepare the sample to be measured.
Step 2. Press key to power on.
Step 3. Reference to the chapter 3 to decide whether need to calibrate the gauge.
Step 4. Start measuring. Place the probe on the sample vertically and rapidly, and after one beep(for single
measure mode), raise the probe rapidly. Readings will be display on LCD, meanwhile statistics value
are upgraded and displayed.
Step 5. Do next measurement according to step 4.
Step 6. Press to power off. If not any operations within 3 min., the gauge will power off automatically.
8

Enter
Root
Delete Data
Browse Stat.
Options
Limit
Calibration
Exit
Recall
Menu Item
Caption
Sub-menu
Left Button
Right Button
Active Item
a. Menu Mode
DIR
102
AUTO
Mean
Min
101um
99um
Max 103um
um
16 N
b. Measure Mode
CoatingThick ness Tester
Left Key Right Key
Up Key
Down Key
Zero Calibraion
Power on/off
Muti-point Calibration
c. Key Define(For P1, P2)
2.3 Key and User Interface
The gauge have a standard user interface, user can
use it easily.
Left Key
a. To enter into menu mode from measure mode;
b. Left button operations in menu mode(Including
“Sure”, “Select”, “Delete”);
Right Key
a. Right button operations in menu mode(Including
“Cancel”, “Back”, “Exit”); b. Press and hold to rotate screen
c. Switch on/off the backlight in measure mode;
Up Key
a. Move up or roll up;
b. Increasing; c. Delete the last readings or whole group
Down Key
a. Move down or roll down; c. Zero calibration(For P3, P4)
b. Decreasing; d. Refresh LCD in measure mode(For P1, P2)
Zero Calibration Key(For P1, P2)
a. Press and hold to do zero calibration;
c. Press once to back measure mode in menu mode;
d. Press and hold when power on to make system reset.
This will restore factory settings;
Calibration Key(For P1, P2)
a. Enter into calibration mode and back measure mode;
9
d. Key Define(For P3, P4)
Left Key
Up Key Power on/off
Right Key
Down Key
ZERO

2.4 Measure Mode
Single measure mode - Place the probe on sample vertically and rapidly, and after one beep, raise it rapidly.
Continuous measure mode - Place the probe on sample, and don’t raise the probe, the measurement will
be done continuously in a certain cycle.
2.5 Group Mode
Direct Group(DIR)-Be intended for quick occasional readings. In this mode, data are temporarily stored in RAM,
it will be lost when power off. The readings and statistics can be shown on the LCD. When the RAM is full,
measuring will continue, the oldest readings will be deleted mean while the new readings is stored. Each
new readings is stored, the statistics will be upgraded and shown.
General Group(GENn, n=1 to 4)-In this mode, data are stored in memory and not lost when power off.
When the memory is full, measuring will continue, a “fl” will be shown on the left of readings, the new
readings will not be stored, and statistics will not be upgraded.
NOTE: Each group(DIR or GEN) has individual high/low limit alarm, zero calibration and multi-point calibration,
and these settings will stored in memory when user changes them.
10

Method of switch group mode
a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Options” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate ”Group Mode” item, and press “Left Key” once to enter in;
d. Press “Up Key” or “Down Key” to activate your intended item, and press “Left Key” once to select the item
and go back. Press “ZERO Key” to back measure mode.
2.6 Statistics
The gauge calculates the statistics for stored readings of each group independently, including mean, minimum,
maximum and standard deviation. In direct group mode, when RAM is full, the oldest readings will be deleted
meanwhile the new readings will be stored, and the statistics will be upgraded. In general group mode, when
memory is full, new readings will not be stored and the statistics will not be upgraded. If user deletes the
specified readings or whole group readings, the statistics will also be upgraded.
Browse the statistics through menu
a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Browse Stat.” item, and press “Left Key” once to enter in;
c. Press “Right Key” once to go back. Press “ZERO Key” to back measure mode.
11

2.7 Probe Mode
There are three probe modes: AUTO, MAG and EDDY. In AUTO mode, the probe can automatically determine
the type of substrate measured. In MAG mode, the probe can only measure on magnetic substrates. In EDDY
mode, the probe can only measure on non-ferrous metal substrates. When a magnetic substrate detected, an
“F” will be shown on the right of readings, and when a non-ferrous metal detected, a “N” will be shown. User
can switch probe mode as below.
a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Options” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate ”Probe Mode” item, and press “Left Key” once to enter in;
d. Press “Up Key” or “Down Key” to activate your intended item, and press “Left Key” once to select the item
and go back. Press “ZERO Key” to back measure mode.
2.8 Storage
In general group mode(GENn), readings and statistics will be stored and not be lost when power off. In direct
group mode(DIR), readings and statistics will be lost when power off.
Each group has individual high/low limit alarm, zero calibration and multi-point calibration, user can change
these settings, and they will be stored.
In addition, user can set the system settings(e.g.: Measure Mode,Group Mode,Probe Mode etc.), these settings
will also be stored.
2.9 Recall and Delete Readings
Delete the last readings(Tips: If in measure mode, press the “UP Key” once by one beep).
a. Press “Left Key” once to enter into menu mode(”Root” directory);
Note: When battery low, user must replace the battery timely. Before replacing the battery, you need to power off
the gauge firstly.
12

b. Press “Up Key” or “Down Key” to activate “Delete Data” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate ”Current Data” item, and press “Left Key” once. A dialog box will
be displayed.
d. Press “Left Key” once to confirm the selection and go back, or “Right Key” to cancel and back. Press “ZERO
Key” to back measure mode.
Delete whole group readings(Tips: If in measure mode, hold the “UP Key” by one beep)
a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Delete Data” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate ”Current Group” item, and press “Left Key” once. A dialog box
will be displayed.
d. Press “Left Key” once to confirm the selection and go back, or “Right Key” to cancel and back. Press “ZERO
Key” to back measure mode.
Recall and delete specified readings
a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Recall” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to recall the readings(n/Total number, “n” indicates the index of current
shown readings). User can press “Left Key” to delete current shown readings.
d. Press “Right Key” to go back. Press “ZERO Key” to back measure mode.
2.10 High and Low Limit Alarm
Each group has individual high/low limit alarm settings. When switch the work group, the applied alarm
settings will also be switched automatically.
Set high/low limit for the current work group as below.
a. Press “Left Key” once to enter into menu mode(”Root” directory);
Note: While readings deleted, the statistics will be upgraded automatically.
13

b. Press “Up Key” or “Down Key” to activate “Limit” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate “Settings” item, and press “Left Key” once to enter in;
d. Press “Up Key” or “Down Key” to activate your intended item, and press “Left Key” once to enter in;
e. Press “Up Key” or “Down Key” to increase or decrease the limit value. If hold the key, the limit value will be
increased or decreased continuously.
f. Press “Left Key” to confirm new limit value, or “Right Key” to cancel and back. Press “ZERO Key” to back
measure mode.
Clear high/low limit
a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Limit” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate ”Clear” item, and press “Left Key” once. A dialog box
will be displayed.
d. Press “Left Key” once to confirm the selection and go back, or “Right Key” to cancel and back. Press “ZERO
Key” to back measure mode.
2.11 Unit
User can select the shown unit(Including um,mm and mils) for the readings. Switch the unit as below.
a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Options” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate ”Unit Settings” item, and press “Left Key” once to enter in;
d. Press “Up Key” or “Down Key” to select intended item. Press “Left Key” to confirm it.
2.12 Speed
Note：While readings exceed high limit, the alarm symbol will be shown on the LCD, and while readings exceed
low limit, the alarm symbol will be shown.
14
Generally, The faster the measuring speed for probe, the worse accuracy. User can select different
measuring speed for probe according to user ’s application fields as below:
Meanwhile, the red led backlight will be on.

a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Options” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate ”Speed” item, and press “Left Key” once to enter in;
d. Press “Up Key” or “Down Key” to select intended item. Press “Left Key” to confirm it.
2.13 Data Download
User can use the USB cable to connect the gauge with PC and download stored readings . If USB connected, the
symbol will be shown on the bottom of the LCD. When USB connected firstly, the PC need to install driver and
software for this application. User can get the driver and software from supplier or download them from
specified website. For more details, user can consult with the supplier.
2.14 Auto Power off
User can power off via key manually. In addition, for save power, the gauge will turn off automatically in
default if not any operations. Before turn off automatically, user will hear several beeps, and then user can press
timely any key to let the gauge restart timing and continue working. Enable or Disable this function as below.
a. Press “Left Key” once to enter into menu mode(”Root” directory);
b. Press “Up Key” or “Down Key” to activate “Options” item, and press “Left Key” once to enter in;
c. Press “Up Key” or “Down Key” to activate “Auto Poweroff” item, and press “Left Key” once to enter in;
d. Press “Up Key” or “Down Key” to select intended item. Press “Left Key” to confirm it.
2.15 Measurement Accuracy
Factors of affecting measurement accuracy, please reference the chapter 3. Under normal use and careful
calibration, all subsequent measurements will lie within the guaranteed measuring tolerance.
When using the statistics programmer for obtaining a mean value it is advisable to place the probe several times
at a typical measuring spot or at fixed measuring spot. Any false readings or outliers can be deleted
15

immediately. The final reading derives from the statistical calculation and from the guaranteed tolerance levels
of the gauge. T(coating thickness)=M(mean value)±S(standard deviation)±A(measuring accuracy).
3. Factors of Affecting Measurement Accuracy
User needs to know the factors of affecting measurement accuracy before using the gauge. The factors are
listed as below.
Principle
Factors Magnetic EddyCurrent
Magnetic properties
Electrical properties
Curvature radius
Substrate thickness
Size of measuring area
Position and shape
Surface roughness
Adhesive substances
Strong magnetic field
Temperature and humidity
Measuring operations
Low battery
Sample deformed
Probe wear
Recommendations
Need to calibrate
Clean probe and sample
Recalibrate at the same environment conditions
Read the chapter 2.2
Replace the battery
Consult with suppler
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√
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Reference the chapter 1.6, and need to calibrate
Be away from strong magnetic field
Need to calibrate
Avoid to measure on too soft or too thin material
Reference the chapter 1.6, and need to calibrate
Reference the chapter 1.6, and need to calibrate
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The measured sample must correspond to the calibration sample in substrate material properties, curvature
radius, or the more closely the measured sample matches the calibration sample, the more accurate the
measuring. In addition, curvature radius should meet the minimum value as specified in chapter 1.6.
The minimum substrate thickness and the minimum measuring areas as specified in chapter 1.6 should be
taken into account. Need to recalibrate(Zero/Multi-point) for different measured sample for higher accuracy.
To achieve high-accuracy readings, it is advisable to log calibration values several times. In this way, the gauge
will automatically establish a mean calibration value. The high-accuracy calibration is an obvious advantage
when calibrating on uneven and rough surfaces.
The point at which measurement is made should always be similar with the calibration point, especially in the
case of corners and edges of small parts.
4. Calibration
User should read the chapter 3 firstly, and must recalibrate the gauge according to measured product sample.
The gauge provides zero calibration and multi-point calibration.
Zero calibration: Recommended if measuring errors up to ± (2%+1um).
Multi-point calibration: The permitted measuring errors will be max. ± (1~2%+1um). If only one point calibration,
it is recommended if readings to be expected will be close to the calibration value. If more than one point
calibration, it is recommended for measurements on rough surfaces or for precise measurements on smooth
surfaces if thickness to be expected lies between that of calibration point.
Important Note: The enclosed substrates are intended for checking accuracy only and not for calibration purposes.
User must recalibrate the gauge according to practical applications.
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4.1 Zero Calibration
a. Press and hold “ZERO Key” until hearing “beep...beep beep...”. The LCD will flash “ZERO” symbol.
b. Place the probe on uncoated sample and raise it after one beep.
c. Repeat step b and c several times to obtain mean value.
d. Finished. Press “ZERO Key” to exit calibration mode.
4.2 Multi-point Calibration
a. In measure mode, press “CAL key” once to enter into calibration mode.
b. Zero calibration according to chapter 4.1 and then lay the calibration foil on an uncoated sample.
c. Apply the probe and raise it after one beep. a readings will be shown.Press “Up Key” or “Down Key” to
increase or decrease the readings or hold the key for changing continuously until the required foil thickness
value shown.The LCD will show current calibration point “Ptn X ”. The “X” will be flashing.
d. Apply the probe to the test sample several times, and every time raise the probe, if press “CAL Key”, after
“beep...beep beep...”, it will establish a mean value for current calibration point.
e. Press “Left Key” to confirm and end current calibration point, and the “X” will be steady. Or press “Right
Key” to cancel and end current calibration point.
f. For more calibration points, use another calibration foil and repeat the step c, d and e.
g. Finished. Press “CAL Key” to exit calibration mode.
Note:
a. Each group has individual zero calibration and multi-point calibration.
b. When calibration up to 4 points, user must clear the finished points firstly to restart.
c. Readings measured before will not be affected by new calibration.
d. In calibration mode, measuring will not be affected.
e. Recommended to work in single measure mode when calibrating.
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Tips: For P3 or P4, user needs to access the
menu to enable or disable multi-point cal:
Press Left key->Select “Calibration”->Select
“Point Cal”->Select “Enable” or “Disable”
Tips: For P3 or P4, press and hold “DOWN Key” to start zero calibration, and press again to exit