GREWIN GW-2160C User manual

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Multi Frequency Locator/Receiver
Manual GW-2160C

TIANJIN GREWIN TECHNOLOGY CO.,LTD.
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TIANJIN GREWIN TECHNOLOGY CO.,LTD.
Address: 2# MeiNian Plaza No.16 DongTing Road,Hexi Distr,300222,Tianjin China.
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Features
1. Multiple Functions
1) Transmitter: three connection modes: inductive connection, direct connection and clamp connection;
suitable for different occasions.
2) The receiver functions: detecting the position,path, depth and tube current of underground pipes and
cables.
3) Left and right positioning arrows indicate the target pipeline position fast and accurately; front and rear
arrows and dB value indicates the point and size of the coating damage.
4) Backlight suitable for urgent use in the nighttime.
5) Optional GPS geolocation with the automatic mapping of the pipelines.
6) Optional professional data analysis software with the automatic detection report.
7) Unique feature of GW-6000GE: locating the breakdown points (pipeline breakdowns refer to the coating

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damaged points while electric cable breakdowns refer to the outer layer damages.); detecting the insulation
damages of underground pipeline and cable.
8) Measuring the current of the pipeline and cable applied by the transmitter.
9) Multimeter function: measure the output voltage, line voltage, line current, impedance and power; Test
the cable continuity and insulation quality before and after cable fault finding.
10) External induction clamp: suitable for testing the cable when they cannot be directly applied to the
signal of the place.
2. High Location Accuracy
A variety of measurement modes for pipeline positioning (valley mode, peak mode, broad peak mode, peak
arrow mode), can verify each other to ensure the accuracy of pipeline positioning.
1) Maximum value method: peak mode, broad peak mode and peak arrow mode are available to
determine the horizontal component ( ) or horizontal gradient ( ) changes, according to its
maximum position to locate;
2) Minimum value method: use the valley mode by measuring the vertical component ( ) changes
according to its minimum position to locate.
3. Measuring the depth
A variety of methods can be used to verify each other.
1) double-level coil direct reading method;
2) single-level coil 80% method, 50% method;
3) 45 degrees method
4. Strong anti-interference ability
1) Many Observation Parameters: can measure horizontal component ( ), vertical
component ( ) and horizontal gradient ( ).
2) Large transmission power: the transmitter output power reaches 10W and it could be
continuously adjustable.
3) Multiple Working Frequency:
Transmitter frequency: 128Hz, 512Hz, 1KHz, 2KHz, 8KHz, 33KHz, 65KHz, 83KHz.
Receiver frequency: radio, 50Hz, 100Hz, 128Hz, 512Hz, 1KHz, 2KHz, 8KHz, 33KHz, 65KHz,
83KHz.
According to the target pipeline features (material, structure, depth, length, etc.) and the
environment to select the appropriate operating frequency.
5. Easy Operation

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1) Intuitive: use the graphical display to get the sustained and real-time display of various
parameters in the detection process and signal strength.
2) Automatic: in the depth measurement, automatic change to the two-level antenna mode
and automatic adjustment of the receiver sensitivity so that the measurement signal achieves
the best result. The mode returns to the original one after the depth measurement.
6. Long continuous working time with the low cost
Both the transmitter and the receiver are equipped with a large capacity lithium battery pack.
A fully recharge can last a whole working day outdoors. The recharging function has greatly
reduced the detection costs.
7.AC and DC
Under normal circumstances, if the battery is sufficient, please use the instrument with
built-in battery pack power supply. If the battery power is low, and the detection task is not
completed, you can use the power adapter to continue the detection without having to recharge
the battery.

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1.GW-6000G Receiver/Locator：
The receiver is used for the measurement of
underground pipelines, cable positioning, buried depth
of underground pipelines, and tube current
measurements. A variety of frequency and mode of
operation to meet a variety of environments and a
variety of pipeline detection needs.
1.1 Functions：
Turn on/off (1)
Press the key to start the boot or to shut down. When
the receiver is turned on, the receiver automatically
shuts down if no function key is pressed during the set
auto power off time. If any function key is pressed, the
receiver will reset the shutdown time.
fbutton(2)
Frequency selection key: according to the frequency of the transmitter to select the corresponding
detection frequency, selectable frequency including radio, 50Hz、100Hz、128Hz、512Hz、1KHz、
2KHz、8KHz、33KHz、65KHz、83KHz.
Mode (3)
The mode key is used to select the receiver's
operating mode for precise positioning of the pipeline.
The positioning process is usually measured by the
peak method.
Including:
Valley mode
Peak mode
Wide mode
Peak arrow mode
Power mode: 50Hz power cable can be detected
When there is an external A-frame, you can also
select the external signal mode.

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(4)
To increase, please press
To decrease, please press .
In the adjustment, the number is shown in the
middle of the display window.
Press or for 3 seconds to start the function
automatically. The number turns into flashing cursor(as
shown on the left), the instrument automatically adjusts
the Signal strength to about 70% of full scale. The relative
intensity of the signal is indicated by the bar graph(8)
above the display window and the number(9) below the
graph.
Depth/Current（5）
key is used to measure the depth of the buried
pipeline, meanwhile it could measurethe current value in
the target line. In the current measurement process,
regardless of the original use of which positioning mode,
the system automatically switches to the peak mode.
The depth measurement unit can be selected by
metric or imperial from the menu.
Metric Units: cm when the depth of the pipeline is
less than 1 meter.
When the depth is more than 1 meter, the depth
display unit is m.
Inch unit: feet.
Current unit: When the current is more than 1A, the
display current unit is A, when the current is less than 1A,
the display current unit is mA.
Note:
1, in order to measure the exact depth of the depth, the receiver must be maintained in the

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vertical position of the work.
2, in order to improve the accuracy of the depth of the measurement, it is not suggested to
use the valley mode, the wide-peak mode is recommended for pipeline depth measurement.
Backlight（6）
Press the backlight key, the backlight of display will turn on and keep a preset time, and then press
the backlight button, backlight is off.
The backlight time can be set via the backlight menu.
Data Storage：
Measured current and depth data storage method: After measuring the current value, the
depth and current value are indicated in the middle of display. If you need to store data,
press button，the detection value is stored in the instrument's memory, and the lower right
corner of the display indicates how much serial number (12) is stored. If storage is not needed,
press button to restore the locating mode.
Browsing Data：After pressing button and button togethrt for 3 seconds，it enters
the interface including frequency, serial number, distance, depth and current, etc. Press
and button to visit the previous and next page. Press again to exit. If no key is
pressed for 20 seconds, it restores the locating mode.
Note: Only 1000 data of the same frequency can be saved. After switching to the different
detection frequencies, if you need to store the data, you must delete the data of the original
frequencies that have been stored before storing the new frequency data.
For example: the instrument has been stored 128Hz data group 100, now it is changed to the
measurement frequency of 512Hz and needs to store 512Hz data to complete the measurement. ，
Press to store ， Reminder: "128Hz has been stored 100 data, whether to delete", if you need to
delete , press for 5 seconds to delete to store 512HZ data.
1.2 Receiver Display
Battery Indicators (7)
The upper right corner of the display has a battery
symbol that indicates how much battery power is. When a
flashing battery symbol is displayed indicating that the

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built-in battery of the instrument is not enough for work
and needs to be recharged. Generally, the machine
usesa high-performance lithium battery pack, fully
recharged for the receiver to work more than 10 hours.
Receiver recharging: The charger's circular is connected to the receiver's charging jack, the other
end is plugged into the 110V/220V power supply, charger indicator light is red during charging, and
it will turn green after full charged.
Signal Strength（8、9）
The bar graph above the display window indicates the relative strength of the signal. The
number indicates the signal strength and it can be
adjusted by pressing . Display the lower
side of the window with the number 0-100 to show
the receiver's gain size. When the signal source is
strong, it is necessary to decrease. When the signal source is weak, it needs to increase. When in
the normal detection, it is necessary to adjust the signal strength to about 70% of the full scale.
Display（10）
Display a variety of measurement parameters and measurement results show.
Point distance indication（11）
When the GPS is successfully connected and the satellite signal is received,
the detection data saves the distance between the two measuring points
and displays it in real time. If the GPS module is not configured and poi nt
distance will display 0m.
Data Storage Log（12）
Once the measured data is stored, the number will be automatically incremented by 1. 100 Log
means that 100 groups of data has been saved and it could store 0-1000 data.
Speaker Indicator（13）
The loudspeaker indicator indicates the level of the speaker sound, the sound
mode has high, medium, low and off. When the speaker sound is off, the speaker
indicator is not displayed. The speaker volume is set in the menu settings。
Locating Mode（14）
Press button to select modes （Valley mode, peak mode, broad peak mode and peak
arrow mode），and the mode is displayed.

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Frequency Indicator（15）
Use the frequency key to select the desired detection frequency and the frequency will be
displayed.
Increase/Decrease Indicator（16）
The number 0-100 in the lower side of the display shows the receiver's gain size. When the signal
source is too strong, it is necessary to decrease. When the signal source is too weak, it needs to
increase. During the detection, it is necessary to adjust the signal strength to about 70% of the full
scale.
Left/Right Arrow Indicator
When using the valley mode or the peak arrow mode to detect the pipeline position, the left
and right arrows could help to trace the pipeline position quickly. When the instrument
deviates from the left side of the pipeline, the right arrow appears. When the instrument
deviates from the right side of the pipeline, the left arrow appears.
Coating Leaking Point Indicator
When testing damage points or cable failure points, the arrows will help to indicate the
location of the position on coating (as shown below). When the forward arrow appears, the point
of failure is in front of the A-frame. When the rear arrow appears, the point of failure is behind the
A-frame.

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A frame access status
If A frame is connected, press button to select the external signal mode. A frame is
used to detect the damage point of the coating and shows the size of the damage point in dB.
Other Locating Method：
50Hz for power line signal detection, CPS signal (cathodic protection current signal), and radio signal detection.

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1.3 Receiver Setting
Press key for 3 seconds to enter the main menu. Press or to move the
cursor. Press to enter the submenu or change the setting. Press to return the main
menu.
Menu 1
Language Chinese
Contrast control Entry
British—Metric meter
Speaker Volume Low
English Menu 1
Menu 2
Backlight 15S
Automatic Shut 10min
Bluetooth Pairing Entry
Search For Bluetooth Using
English Menu 2
Language Setting：Move the cursor to Language and Press to change the language between
Chinese and English.
Contrast Control: Move to Contrast Control and press to adjust the contrast by
pressing or . Press to return the main menu.

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Contrast Control
Measurement Unit Setting：Press to move the cursor to British-Metric setting and
press to set Footage or Metric.
Menu 1
Language Chinese
Contrast control Entry
British—Metric meter
Speaker Volume Low
Menu 1
Language Chinese
Contrast control Entry
British—Metric Feet
Speaker Volume Low
Speaker Setting：Press to move the cursor to Speaker volume setting. Press to set the
volume.

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Menu 1
Language Chinese
Contrast control Entry
British—Metric Feet
Speaker Volume Low
Backlighting Setting：Press to move the cursor to the backlight time setting. Press to
set the time ：5S→15S→30S→1m→oftenlighting→Off→5S。
Menu 2
Backlight 15S
Automatic Shut 10min
Bluetooth Pairing Entry
Search For Bluetooth Using
Automatic Off Setting：Press to move the cursor to automatic off setting. Press to
set the time：30 minutes→10 minutes→ 5 minutes→Never→30 minutes.
Menu 2
Backlight 15S

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Automatic Shut 10min
Bluetooth Pairing Entry
Search For Bluetooth Using
Bluetooth：Press to move the cursor to set the Bluetooth paring. Press to enter the
Bluetooth pairing.
Menu 2
Backlight 15S
Automatic Shut 10min
Bluetooth Pairing Entry
Search For Bluetooth Using
Bluetooth Pairing
Searching……
Bluetooth Pairing：Press to move the cursor to “HOLUX_M-1200”，Press to confirm.
Receiver is paired with GPS Bluetooth module and the icon in the display is lighted. The receiver
can receive GPS data by the Bluetooth. Press to return to the main menu.
Bluetooth Pairing
Nokia N70
TOK

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HOLUX_M-1200
If there is no Bluetooth searched, it will display NO Bluetooth Equipment Available and press
to return to the main menu.
Bluetooth Pairing
Without Bluetooth equipment available
Bluetooth ON：Press to move the cursor to Search for Bluetooth menu. Press to turn
on/off the Bluetooth. （GW-6000G is not equipped with GPS Bluetooth and the setting is
forbidden.）
Menu 2
Backlight 15S
Automatic Shut 10min
Bluetooth Pairing Entry
Search For Bluetooth Using

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Menu 2
Backlight 15S
Automatic Shut 10min
Bluetooth Pairing Entry
Search For Bluetooth Forbidden
2. GW-6000G:Transmitter
The transmitter is adapted to apply a signal of the selected particular frequency to the target
line, and the signal can be applied by the direct connection method and the inductive method.
Transmitter with power, measuring distance, automatic impedance matching, automatic
measurement of pipeline grounding resistance and so on
Front Panel：7 touch keys, 2 indicator lights and a LED display screen.
2.1 Keyboards：
ON/OFF: To turn on/off the transmitter
Frequency: to adjust the transmitter power.

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Front Panel
1&2.ON/OFF; 3.Charging Indicator; 4.Voltage Indicator; 5.Working Indicator; 6&7.Frequency Adjustment;
8. Frequency; 9. OK/Enter; 10. Measurement; 11.Working Frequency Indicator; 12.Transmitter Output Parameter;
13. Two frequencies of coating leak detector
Frequency (f): Select the frequency128Hz, 512Hz, 1KHz, 2KHz, 8KHz, 33KHz, 65KHz, 83KHz.
Measurement (i): Press the measurement key to select the output parameters of the
instrument:output power percentage, output power, output voltage, output current, output
impedance.
Enter (OK): When you set the frequency to be applied, press the OK key again to change the
transmitter output frequency immediately. If the key is not pressed after the frequency selection,
wait for 5 seconds. The instrument automatically confirms the selected frequency.
Display

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Working Frequency ：When the frequency of the transmitter is selected, the corresponding
triangular indicator light is on, and the available frequencies are 128Hz, 512Hz, 1KHz,
2KHz, 8KHz, 33KHz, 65KHz, 83KHz.
Voltage: The bottom line of the display shows the level of the supply voltage. When the triangular
indicator corresponding to the supply voltage is on, it indicates the level of the power
supply. When the supply voltage drops below 11.5 volts, the battery must be charged.
Output Parameter: The top line of the display shows the output parameters of the transmitter. The
first indicator indicates the percentage of the output power in inductive mode. The
second indicator indicates the output power.The third indicator indicates the output
voltage. The fourth indicator indicates the output current, and the fourth indicator
indicates the output impedance.
Display ：The display has eight digits, the firstfour digits are used to display the measured value,
that is, the transmitter output parameters (output power, output voltage, output
current and output impedance), the seventh and eighthdigits display the output level
(from 0 to 10). When the output level is from 0 to 9, only the seventh digit shows the
relevant value. When the output level is 10, the seventh digit shows 1 and the eighth
digit shows 0.
2.2 Battery Recharging
When the transmitter battery voltage is too low, you need to charge it, you must turn off the
instrument firstly (if the instrument is turned on, do not charge the battery because it can work),
and then the power adapter is plugged into the instrument charging jack, insert the other end to
110V/220V power supply.When the charging is started, the charging indicator should be red. The
charging light turns green after it is full charged.
III. Specifications
1. Locator
Ω
mA
V
W
2KHz
1KHz
512Hz
128Hz 8KHz
33KHz
65KHz
83KHz
%

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Positioning accuracy: ± 5% of depth
Depth measurement accuracy: ± 5% of depth (no adjacent line interference)
Current measurement accuracy: ± 5% of actual current
Depth measurement range: <6 m
Working mode: valley method, peak method, broad peak method and peak arrow method.
Operating frequency: radio, 50Hz, 100Hz, 128Hz, 512Hz, 1KHz, 2KHz, 8KHz, 33KHz, 65KHz,
83KHz (different operating frequencies according to different product models)
Working temperature: -20 ℃~ +50 ℃
Battery: 7.4V lithium battery
Dimensions: 595mm × 136mm × 238mm
Weight: 1.6Kg (including battery pack)
2. Transmitter
Output power: 10W
Operating frequency: 128Hz, 512Hz, 1KHz, 2KHz, 8KHz, 33KHz, 65KHz, 83KHz
(different operating frequencies according to different product models)
Working modes: automatic conversion of three modes - direct connection, inductive
connection and clamp connection
Battery: 14.8V built-in lithium battery pack
Working temperature: -20 ℃~ +50 ℃
Dimensions: 348mm × 228mm × 84mm
Weight: 2.5Kg (including battery pack)
IV. Parts and Accessories
1. Standard
GW-6000G locator: 1 set；
GW-6000G transmitter: 1 set；
Direct connection signal wire: 1 piece;
Clamps: 1 piece
Output wires: 2 pieces
Grounding rod: 1 piece
Chargers: 2 pieces
Connecting magnet: 1 piece
Power cord: 1 piece
Operation manual: 1 piece
Instrument box (or bag): 1 piece
2. Optional
A frame: 1 piece (only for model GW-6000GE)
V. Check before use

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Please check all the parts before using the locator and transmitter to ensure that the
battery is sufficient and instruments are working well. In case there are any following
conditions, please solve them before use.
1 Locator check
1) Battery power check: press the power button to check the battery power. If the
battery is fully charged, the battery symbol in the display will show all the five
lines; when the battery symbol has only one line, the battery symbol will flash
indicating that the battery is low and it needs to be fully charged.
Full battery Almost run out and please recharge
2) Operating frequency check: press the frequency key to select50Hz and adjust the sensitivity.
Point the locator to the fluorescent lamp 1 meter away and turn on the fluorescent lamp. A signal
soundwill be heard, and the monitor will display strong signal too.
3)Inductive method check: find a place without any interference and put the transmitter on the
ground. Turn on the transmitter and select the output power percentage and frequency. Then
point the receiver (about 5 meters away from the transmitter) to the transmitter and keep the
same frequency as the transmitter. When the sensitivity is adjusted to be large enough, the
receiver should have a signal response.
4) Clamp method: When the external clamp is inserted into the transmitter output interface, press
the button ON, the transmitter will select the frequency as33KHzautomatically. Put the clamp on
the target pipeline and adjust the transmitter power. Turn on the receiver and select the frequency
as 33KHz. The receiver should have a signal response along the pipeline.
Note: For the Inductive method, you can only choose 65KHz and 83KHz frequency. Without the
direct signal output or clamp inserted, the instrument will select the inductive
modeautomatically. In the inductive mode, only 65KHz and 83KHz are available; In the clamp
method, you can only choose 33KHz. When the clamp accesses the transmitter, the instrument
will selectthe frequency as33KHz automatically.
When using the inductive method or clamp method, the instrument display shows the
percentage of output power, and the trianglefor percentage on the top line is lighted.