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TIANJIN GREWIN TECHNOLOGY CO.,LTD.

Web:www.grewin-tech.com Wh86-13072088960

Email:[email protected]

TIANJIN GREWIN TECHNOLOGY CO.,LTD.

Address:

2# MeiNian Plaza No.16 DongTing Road,Hexi Distr,300222,Tianjin China

Illustration of Using A-Frame to Accurately Locate Fault Points

X Technical Terms

Active Source Signal: A signal sent by the Forbest series of pipeline transmitters and

applied to the pipeline

Passive source signal: The 50Hz signal naturally generated by the power cable.

CPS signal: cathodic protection current signal.

Pipeline: A continuous underground metal pipe, cable, or other conductor that has a certain

tendency to conduct current.

Target pipeline: refers to the pipeline that needs to be detected in the pipeline exploration project.

Positioning: Determine the location of the target pipeline's horizontal projection on the ground

based on the detection results of the pipeline instrument.

Response: The receiver detection signal is indicated in its display or speaker. By adjusting the

sensitivity of the receiver, the response of a signal can be changed.

Search: Use the receiver to find all the target pipelines in a certain area.

Signal: A detectable magnetic field generated by an alternating current in a pipeline.

Содержание GW-2160C

Страница 1: ...ww grewin tech com WhatsApp 86 13072088960 Email salesmanager grewin tech com TIANJIN GREWIN TECHNOLOGY CO LTD Address 2 MeiNian Plaza No 16 DongTing Road Hexi Distr 300222 Tianjin China 1 Multi Frequ...

Страница 2: ...e 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 fr...

Страница 3: ...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 i...

Страница 4: ...ver 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 trans...

Страница 5: ...o 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...

Страница 6: ...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...

Страница 7: ...ber 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 se...

Страница 8: ...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...

Страница 9: ...e 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 p...

Страница 10: ...DongTing Road Hexi Distr 300222 Tianjin China 10 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 coatin...

Страница 11: ...rsor 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 Backlig...

Страница 12: ...Tianjin China 12 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...

Страница 13: ...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...

Страница 14: ...g 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 Bluet...

Страница 15: ...f 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 mov...

Страница 16: ...rbidden 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 th...

Страница 17: ...tor 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...

Страница 18: ...hird 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...

Страница 19: ...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 operati...

Страница 20: ...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 fro...

Страница 21: ...connect it to the ground bar or directly to the ground Connect the other end to the red wire black wire to the ground and insert the output cable into the transmitter s output jack Turn on the transm...

Страница 22: ...t reaches out of the search area 1 2 The passivecathodic protection current CPS signal method It does not require a transmitter to operate It can search for the underground metal pipe when applying th...

Страница 23: ...uency required for measurement select the option with the frequency key Press the frequency key the frequency triangle shape is lighted in the circle of 128Hz 512Hz 1KHz 2KHZ 8KHz 33KHz 65KHz and 83KH...

Страница 24: ...ceive the signal from transmitter if it is close to the transmitter In order to distinguish whether there is any effect on the receiver from the transmitter source move the transmitter to one side by...

Страница 25: ...m level that meets the operational requirements and increase the output power to the extent that a clear anomaly signalon the pipelinecould be detected If the output power is too high it will apply th...

Страница 26: ...e The single horizontal antenna wide band mode is used to locate deeper pipelines with the highest signal sensitivity When the receiver is directly above the detected pipeline the signal strength is t...

Страница 27: ...ocating is walking above the pipeline and he can make the long distance tracking 3 Valley Minimum Mode The valley minimum mode uses a vertical antenna to receive the vertical component of the target p...

Страница 28: ...rtical antenna and two horizontal antennas to receive the vertical and horizontal components of the target line The receiver gets the maximum value with a left and right arrow response when it is on t...

Страница 29: ...s long or large pipeline for the better earth circuit which is very useful for detecting the main line and the branch line The signal completely disappears probably because it has reached the end of t...

Страница 30: ...App 86 13072088960 Email salesmanager grewin tech com TIANJIN GREWIN TECHNOLOGY CO LTD Address 2 MeiNian Plaza No 16 DongTing Road Hexi Distr 300222 Tianjin China 30 Figure b Illustration of T Branch...

Страница 31: ...ww grewin tech com WhatsApp 86 13072088960 Email salesmanager grewin tech com TIANJIN GREWIN TECHNOLOGY CO LTD Address 2 MeiNian Plaza No 16 DongTing Road Hexi Distr 300222 Tianjin China 31 Figure D I...

Страница 32: ...ions are inconsistent there is interference exists Depth should be measured when the peak mode and the valley mode are Consistent Place the receiver just above the pipeline and make the receiver body...

Страница 33: ...reach up to 5 of pipeline depth if conditions permit but operators do not know if bathymetric conditions are always appropriate Please use the following technique to check for some readings Check whe...

Страница 34: ...th measurement during the detection process of which 80 is the most commonly used and it is relatively accurate especially in complicated pipe network The 45 degree measurement needs to master the rec...

Страница 35: ...measurement of the main line behind the tee can help determine the main and branch lines see Figure g because the main line draws more current due to the length see Figure g Figure g Tee and elbow at...

Страница 36: ...measured value is suspicious search the nearby areas and check the nearby lines for other radiated signals Depth current measurements should be taken to other points of the pipeline if other signals c...

Страница 37: ...canning Mark each pipeline location that has a signal response then trace the portion of the pipeline outside the area and mark it 3 Inductive Search Inductive search is the most reliable technique fo...

Страница 38: ...t pipeline 4 Pipeline Tracking Positioning and Depth Measurement Apply the transmitter signal to an accessible location on a buried pipe or cable such as containers valves street lamps etc track the a...

Страница 39: ...ed by applying the line signal Firstly the whole area is searched by inductive connection method to find out the number general position and direction of pipelines in the area and marks are made on th...

Страница 40: ...the target pipeline is deeper than the signal carrying pipeline or the loop pipeline is more conductive than the target pipeline There will be problems with the detection of the target pipeline If the...

Страница 41: ...because the metal shield of the lighting cable can generally be connected to the metal pillar For cables coming from wooden poles concrete poles or lighting columns the transmitter can be placed in a...

Страница 42: ...e into the ground 3 Connection of the fault detection line Insert the fault detection line or A frame cable into the receiver input jack 4 Receiver mode settings Adjust the receiver mode key and selec...

Страница 43: ...rking mode and continue the fault point search It can be seen from the above figure that when the A frame approaches the fault point the receiver s horizontal signal will gradually increase the readin...

Страница 44: ...otection current signal Pipeline A continuous underground metal pipe cable or other conductor that has a certain tendency to conduct current Target pipeline refers to the pipeline that needs to be det...

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