UNI-T UT387C Stud Sensor User Manual
- September 20, 2024
- UNI-T
Table of Contents
UT387C Stud Sensor
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Specifications:
-
P/N: 110401109798X
-
Model: UT387C Stud Sensor
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Features: V groove, LED indication, high AC voltage hazard,
stud icon, target indication bars, metal icon, mode selection,
battery power -
Materials Scanned: Dry wall, plywood, hardwood flooring, coated
wood wall, wallpaper -
Materials Not Scanned: Carpets, tiles, metal walls, cement
wall
Product Usage Instructions:
1. Installing the Battery:
Open the battery compartment door, insert a 9V battery with
correct polarity, and close the door securely.
2. Detecting Wood Stud and Live Wire:
-
Grip the UT387C firmly and position it straight up and down
against the wall. -
Ensure the device is flat against the surface without pressing
too hard. -
Select the detection mode: StudScan for wall thickness less
than 20mm, ThickScan for greater than 20mm. -
Slowly slide the device along the wall. When the green LED
lights up and buzzer beeps, the target indication bar is full and
the CENTER icon is displayed at the midpoint of the stud. -
Mark down the midpoint of the stud indicated by the V groove at
the bottom.
3. Detecting Live AC Wire:
Select AC Scan mode and follow similar steps as metal detection
for calibration.
4. Detecting Metal:
The device has an interactive calibration function for accurate
metal detection. Select Metal Scan mode and follow calibration
steps.
Frequently Asked Questions (FAQ):
Q: Can UT387C detect metal in walls?
A: Yes, UT387C can detect metal using the Metal Scan mode with
interactive calibration.
Q: How do I know when both wood and live AC wires are detected
simultaneously?
A: The device will light up the yellow LED to indicate detection
of both wood and live AC wires.
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P/N:110401109798X
UT387C Stud Sensor User Manual
Caution: Please read the manual carefully before use. Observe the safety regulations and the cautions in the manual to make best use of the Stud Sensor. The company reserves the right to modify the manual.
UNI-T Stud sensor UT387C
1. V groove
2. LED indication
3. High AC voltage hazard
1
4. Stud icon 5. Target indication bars 6. Metal icon 7. Mode selection
2
3
8
4 5
9
6
a. Stud Scan and Thick Scan: wood detection 7
Stud Scan
AC Scan
b. Metal Scan: metal detection c. AC Scan: live wire detection
Thick Scan
Metal Scan
10
8. Battery power
Stud Sensor UT387C
11
9. CENTER
10.Power switch
11.Battery compartment door
Figure 1
Stud sensor UT387C application (Indoor dry wall)
UT387C is mainly used to detect the wood stud, metal stud, and live AC wires
behind dry wall. Caution: The detection depth and accuracy of UT387C are
easily affected by factors such as the ambient temperature and humidity, the
texture of the wall, the density of the wall, the moisture content of the
wall, the humidity of the stud, the width of the stud, and the curvature of
the stud edge, etc. Do not use this detector in strong
electromagnetic/magnetic fields, such as, electric fan, motor, high-power
devices, etc.
UT387C can scan the following materials:
Dry wall, plywood, hardwood flooring, coated wood wall, wallpaper.
UT387C cannot scan the following materials:
Carpets, tiles, metal walls, cement wall.
Specification
Test condition: temperature: 20°C 25°C; humidity: 35 55% Battery: 9V square
carbon-zinc or alkaline battery StudScan Mode: 19mm (maximum depth) ThickScan
Mode: 28.5mm (maximum detection depth) Live AC Wires (120V 60Hz/220V 50Hz):
50mm (max) Metal detection depth: 76mm (Galvanized steel pipe: Max.76mm.
Rebar: maximum 76mm. Copper pipe: maximum 38mm.) Low battery indication: If
the battery voltage is too low when power on, the battery icon will flash, the
battery needs to be replaced. Operating temperature: -7°C 49°C Storage
temperature: -20°C 66°C Waterproof: No
Operating Steps
1. Installing the battery: As shown in the figure, open the battery compartment door, insert a 9V battery, there are positive and negative terminal marks in the battery jar. Do not force the battery if battery installation is not in place. Close the door after installing correctly.
Battery door
2. Detecting wood stud and live wire: 1) Grip the UT387C at the handheld areas, position it straight up
Figure 2
and down and flat against the wall.
Note 1: Avoid griping over the finger stop, hold the device parallel to the studs. Keep the device flat against the surface, do not press it hard and do not rock and tilt. When moving the detector, holding
position must stay unchanged, or else the detection result will be affected.
Note 2: Move the detector flat against the wall, the moving speed shall stay constant, otherwise the detection result may be inaccurate.
- Selecting the detection mode: move switch to left for StudScan (Figure 3)
and right for ThickScan (Figure 4).
Note: Select the detection mode according to different wall thickness. For example, select StudScan mode when the thickness of the dry wall is less than 20mm, select ThickScan mode when it is greater than 20mm.
Figure 3
Figure 4
- Calibration: Press and hold the power button, the device will calibrate automatically. (If the battery icon keeps flashing, it indicates low battery power, replace the battery and power on to redo the calibration). During the auto calibration process, LCD will display all icons (StudScan, ThickScan, Battery power icon, Metal, Target indication bars) until the calibration is completed. If the calibration is successful, the green LED will flash once and the buzzer will beep once, which indicates that user can move the device to detect woods. Note 1: Before powering on, positon the device on wall in place. Note 2: Do not lift up the device from the dry wall after the calibration is completed. Recalibrate if the device is lifted from the dry wall. Note 3: During calibration, keep the device flat against the surface, do not rock or tilt. Do not touch the wall surface, otherwise the calibration data will be affected.
- Continue to hold the power button, then slowly slide the device to scan on the wall.As it approaches the midpoint of the wood, the green LED lights up and the buzzer beeps, the target indication bar is full and the icon “CENTER” is displayed.
Note 1: Keep the device flat against the surface. When sliding the device, do not rock or press the device hard. Note 2: Do not touch the wall surface, otherwise the calibration data will be affected. 5) The bottom of the V groove corresponds to the midpoint of the stud, mark it down. Caution: When the device detects both wood and live AC wires at the same time, it will light the yellow LED.
Stud Scan
Thick Scan
AC Scan
Metal Scan
Stud Sensor UT387C
4. Detecting live AC wire
Figure 7
This mode is same as metal detection mode, it can also calibrate interactively.
- Select detecting mode, move the switch to AC Scan (Figure 8)
3. Detecting metal
Figure 5
The device has an interactive calibration function, users can find the accurate position of metal in the
dry wall. Calibrate the instrument in the air to achieve best sensitivity, the most sensitive area of metal
in the dry wall can be found by times of calibration, the target metal is located in the center area where
the instrument indicates.
1)Selecting detection mode, move switch to Metal Scan (Figure 6)
Metal Scan
Figure 6
2) Grip the UT387C at the handheld areas, position it vertically and flat
against the wall. Move the switch to Maximum Sensitivity, press and hold the
power button. When calibrating, make sure the device is away from any metal.
(On metal scan mode, the device is allowed to be away from the wall for
calibration).
3) Calibration: Press and hold the power button, the device will calibrate
automatically. (If the battery icon keeps flashing, it indicates low battery
power, replace the battery and power on to redo the calibration). During the
auto calibration process, LCD will display all icons (StudScan, ThickScan,
Battery power icon, Metal, Target indication bars) until the calibration is
completed. If the calibration is successful, the green LED will flash once and
the buzzer will beep once, which indicates that user can move the device to
detect the metal.
4) When the device approaches the metal, the red LED will light up, the buzzer
will beep and the target indication will be full.
5) Decrease the sensitivity to narrow the scan area, repeat step 3. User can
repeat times to narrow the scan area. Note 1: If the device doesn’t give a
prompt of “calibration completed” within 5 seconds, there may be a strong
magnetic/electric field, or the device is too close to metal, users need to
release the power button and change a place to calibrate. Note 1: Indication
bar shown in below figure means there is metal. Caution: When the device
detects both metal and live AC wires at the same time, it will light the
yellow LED.
Figure 8
2) Grip the UT387C at the handheld areas, position it straight up and down and
flat against the wall. 3) Calibration: Press and hold the power button, the
device will calibrate automatically. (If the battery
icon keeps flashing, it indicates low battery power, replace the battery and
power on to redo the calibration). During the auto calibration process, LCD
will display all icons (StudScan, ThickScan, Battery power icon, Metal, Target
indication bars) until the calibration is completed. If the calibration is
successful, the green LED will flash once and the buzzer will beep once, which
indicates that user can move the device to detect the AC signal. 4) When the
device approaches the AC signal, the red LED will light up, the buzzer will
beep and the target indication will be full.
Both the StudScan and ThickScan modes can detect the live AC wires, the
maximum distance of detection is 50mm. When the device detects a live AC wire,
the live hazard symbol appears on the LCD while the red LED light is on. Note:
For shielded wires, wires buried in plastic pipes, or wires in metal walls,
electric fields cannot be detected. Note: When the device detects both wood
and live AC wires at the same time, it will light the yellow LED.
Warning: Do not assume there are no live AC wires in the wall. Before cutting
off the power, do not take actions such as blind construction or hammering
nails that could be dangerous.
Accessory
1.Device ————————1 piece 2.9V battery ——————–1 piece 3.User manual —————–1
piece
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