MODEL: GT231
This product is a color-screen portable coating thickness gauge with highdefinition display, which can quickly, non-destructively and accurately me-asure
non-magnetic coating thickness on magnetic metal substrates and non-metallic
COATING THICKNESS GAUGE
5. Functions in Menu (Such as Figure 7):
D.Operation manual
A.Introduction
▶Measurement selection: Enter measurement sub-items to operate.
1.Measurement instruction: After startup, lightly press test probe on the
substrate to be tested under measurement interface, and the measured
value is coating thickness of substrate.
coating thickness measurement on non-magnetic metal sub-strates. At the same
2. Measurement interface (Such
time it can automatically identify magnetic metal substrate and non-magnetic
as Figure 2):
metal substrate, and is widely used in manufacturing, metal processing industry,
a. Mode: single (sng) /
a
b
c
d
continuous (ctn)
chemical industry, commodity inspection and other testing areas.
INSTRUCTION MANUAL
b. Battery power indicator
B.Functions
e
c. Measurement counting
d. Substrate: Fe/nFe
Menu operation and color-screen HD display.
substrate surface and non-metallic coating on non-magnetic metal
substrate .
value
measurement.
a
h
j
l
f
g
i
k
f. Unit : μm/mil
g. Difference value of
Two measurement methods: single measurement, continuous
GT231
f
e. Display zone of measured
Thickness measurement of non-magnetic coating on magnetic metal
measurement
h.Average value
Basic calibration and Zero-point calibration available.
Measurement interface
(Figure 2)
I. Maximum value
Metric/imperial unit and storage function.
j. Minimum value
Screen rotation, charge protection, multi-interface displays, screen
k. High limit
l. Low limit
brightness selection.
Voice broadcast.
3.Enter menu interface:
Automatic shutdown.
▶Under measurement interface, short press “
Coating Thickness Gauge
①.USB charging interface
▶Press “OK” button under measurement interface for quick entry of measured
⑤.Up button
⑥.Down button
⑦.Test probe
⑧.Nameplate on instrument’s back
⑨.Speaker
②.LCD display
③.Back button and power on/off button
④.Confirm button
” button to enter menu
interface, which displays button prompt afterwards (Figure 3):
C.Name of Parts(Such as Figure 1)
data menu (Figure 4):
⑧
②
(2).Zero Calibration:
a. Enter calibration menu and select zero calibration.
b. Lightly press the instrument onto substrate.
c. The instrument will automatically calibrate to zero point.
d. The instrument displays the previous interface after calibration is done.
e. After calibration is complete, you can go back to measurement interface
and perform measurements.
Enter menu interface
(Figure 4)
4. Screen rotation (Such as Figure 5 ~ Figure 6):
▶ Long press “
” button under
measurement interface to rotate
7. Limit value:
▶If limit value switch is on, when the measured value is above
high limit or below low limit, the value will turn red and the
corresponding icon will appear (Such as Figure 8).
▶If limit value switch is off, value of normal measurement will
be displayed (Such as Figure 9).
screen.
⑨
⑤
OK
⑥
③
④
8. Storage (Such as Figure 10):
▶Measured data: users can view, save and delete measured data.
▶View: view saved data (Such as Figure 11).
▶Delete: under delete interface, delete saved data by short pressing OK
button to delete single datum, or long pressing OK button to select all
data and delete.
Standard:Q/GMY 004-2019
Version:GT231-EN-00
(Figure 1)
⑦
1
1.Calibration Operation
(1).Basic calibration:
a. Prepare the calibration plate and calibration base, enter calibration menu
and select basic calibration.
b. According to the instrument instruction, place the corresponding calibration
plate for calibration.
c. After calibration is completed, “calibration complete” will show up at the
bottom of the screen and the instrument will return to the previous interface.
d. After the calibration is complete, you can go back to measurement interface
and perform measurement.
e.Magnetic and non-magnetic metal base calibration do not affect each other
Note: When performing basic calibration, press the instrument onto substrate
when the arrow is down, and remove it when the arrow is up.
Enter menu interface
(Figure 3)
①
Functions in Menu (Figure 7)
Horizontal screen display
(Figure 5)
2
Vertical screen display
(Figure 6)
3
Working voltage
DC 3.7V (Lithium battery capacity 1000mAh)
Number of data storage
Max. 1500 pens
Size
52.9*26*117mm
Weight
102.4g(including battery)
4
G.Attention
1.Keep the probe away from the
measured substrate when starting up.
2.“-OL-”indicates that the value exceeds
measurement range.
3.Do not press the sensor with your finger or
other object into the instrument, because
this operation may damage the sensor
parts and the instrument.( Figure 18)
Reminder: This instrument is equipped with rechargeable battery. If you can't
turn on the product, please use it after charging (power adapter
specification: DC 5V/1A, namely ordinary mobile phone charger).
(Figure18)
Specific Declarations:
Our company shall hold no any responisibility resulting from using
output from this product as an direct or indirect evidence.
We reserves the right to modify product design and specification
without notice.
This instrument is not shipped with power adapter.
Above high limit
(Figure 8)
Normal measurement display
(Figure 9)
Measurement statistics
(Figure 13)
Past values of measurement
(Figure 14)
F.Menu Chart(Such as Figure17)
Measure
View
Language
1.Chinese
2.English
Storage (Figure 10)
Measured data (Figure 11)
9. View:
▶Turn on um&mil switch and measured results of two units are
simultaneously displayed under measurement interface (Such
as Figure 12).
▶Turn on other switches and press UP/DOWN button under
measurement interface to view the corresponding interface (Such
as Figure 13~15).
Measurement trend chart
Settings
(Figure 15)
(Figure 16)
10. Settings:
▶Enter setting menu to perform corresponding operations.(Such as Figure 16).
1.μm & mil
2.Measurement statistics
3.Past values of measurement
4.Measurement trend chart
No operation
auto off time
1.Two minutes
3.Ten minutes
Setting
4.Halfhour
Measurement range
0 ~ 1800 μ m/70.8mil
Resolution
( 0.1μm(<100μm),1μm( ≥100μm))/0.1mil
5.Never
1.Language settings
>>
2.Automatic shutdown
>>
≤150 μm
±5μm
Selected Colors
3.Voice prompt
(on/off)
＞150 μm
±( 3%H+1μm)
1.black
4.High backlight
(on/off)
2.Blue
5.Selected colors
>>
6.Software version
>>
Measurement error
Interface with μm & mil on (Figure 12)
5
Minimum diameter of magnetic metal substrate
12mm
Minimum thickness of magnetic metal substrate
0.5mm
Minimum radius of curvature for magnetic convex substrate
2mm
Minimum radius of curvature for magnetic concave substrate
11mm
Minimum diameter of non-magnetic metal substrate
50mm
Minimum thickness of non-magnetic metal substrate
0.5mm
6
>>
2.Measure unit
>>
Measure mode
1.Single(SNG)
2.Continuous (CTN)
(on/off)
(on/off)
(on/off)
(on/off)
Calibration
Measure unit
1.Base calibration
>>
1.mil
2.Zero calibration
>>
2.μm
Menu
2.Five minutes
E.Technical Parameters
1.Measure mode
1.Measure
>>
2.Calibration
>>
3.Limit
>>
4.Memory
>>
5.View
>>
6.Settings
>>
Limit
(on/off)
1.Limit value
2.High limit
>>
3.Low limit
>>
Memory
3.Orange
7.Restore factory settings >>
Measured data
1.Measured data
2.view group
3.Delete group
>>
>>
2.Save data
>>
3.Delete data
>>
>>
>>
Menu Chart (Figure17)
7
1.View data
8
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