Vivax Metrotech vLocDM Скачать руководство пользователя страница 33 | Manualshive

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Page 27 of 47

6.6.1 Fault Finding Method

1. Connect the transmitter as previously described. Select either 3Hz/6Hz/98Hz (ELF1) or 3Hz/6Hz/
128Hz (ELF2) depending on mains frequency as previously described.

2. Connect the A-frame as above.

6.6.2 Using the A-frame

If the position of a defect has been identified by the vLocDM using the current gradient technique, start an

A-frame survey approximately 20 meters before this point. Place the A-frame in the ground with the A-frame in

line, the green pin pointing towards the suspected fault and directly above the pipe. The signal strength will be
displayed, if the signal is strong enough an arrow will point forward and press the “+” pushbutton to save the
reading. This will enter the result into the graph. Pressing the “-” pushbutton will delete the last record.

The searching of the graph is automated and may change as points are added.

A-frame

Defect

128Hz

15dB

1

2

3

4

A-frame Screen

1 Locate Icon
2 Fault Direction
3 Fault Signal
4 Graph

6

Using the vLocDM Receiver

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Содержание vLocDM

Страница 1: ...vLocDM User Handbook English Edition Version 2 1...

Страница 2: ......

Страница 3: ......

Страница 4: ......

Страница 5: ...Notices 1 7 1 USA 1 7 2 CANADA 1 7 3 EUROPE 2 Service Support 2 1 Serial Number and Software Revision Number 2 2 Distributors and Service Centers Closest to You 3 Introduction 3 1 About this Handbook...

Страница 6: ...ding Method 6 6 2 Using the A frame 6 6 3 Using the A frame where there are Many Defects Such As Porous Coating 7 Using an External GPS Data Logger 7 1 Compatible GPS and GPS Data Loggers 7 2 Transfer...

Страница 7: ...ducts use four types of batteries Alkaline batteries Ni MH Nickel Metal Hydride rechargeable Lithium ion batteries rechargeable Lithium metal batteries small non rechargeable button cells for clock ap...

Страница 8: ...geable batteries used to power internal clocks within some units similar to computers Generally they have a life of 3 5 years Under no circumstances should any attempt be made to charge these batterie...

Страница 9: ...o anyone unless authorized to do so by your company REMEMBER that depth measurements are to the center of the electromagnetic field or pipe In the case of pipes this may be significantly deeper than t...

Страница 10: ...rs and software revision number when requesting product support They can be found as follows for reference only Service Support 1 1 1 Model and Serial Note The transmitter Serial and Model can be foun...

Страница 11: ...Tel 1 408 734 3880 Fax 1 408 962 9993 Canada Vivax Canada Inc 400 Esna Park Drive Unit 17 Markham Ontario L3R 3K2 Canada Tel 1 289 846 3010 Website www vivax metrotech com Email CanadianSales vxmt com...

Страница 12: ...ations AC or external batteries eliminating the need for batteries The non intrusive measuring device the vLocDM receiver takes measurements along the pipeline and plots the results directly onto the...

Страница 13: ...ons should be avoided Choose the survey interval to match the condition of the pipeline In areas where the coating is particularly poor a survey interval of as little as 10m may be desirable However i...

Страница 14: ...Transmitter Functions and Operations 4 1 Transmitter Control Panel 4 2 Display 0 60 A 98Hz 600 mA VOLTAGE LIMIT POWER LIMIT 4 3 Power Supplies and Connections 1 2 3 4 5 1 Mains Input 2 Mains Input Fu...

Страница 15: ...ge settings This is important as the settings must be checked to ensure they return to the original settings when the connections are re made 2 Switch off the CP transformer rectifier and allow the re...

Страница 16: ...e side and the Black to the sacrificial anode It will be necessary to power the transmitter either from a portable 110V AC mains generator or from a vehicle car battery or external 12V DC power source...

Страница 17: ...tion depends on many factors but as a general rule the higher the setting the better The higher the current the more stable the readings at long distance and larger currents create larger current chan...

Страница 18: ...ture the unit will shut down and cannot be switched on until the unit has cooled down After the unit has been cooled down it may be necessary to place the unit in a position where the ambient temperat...

Страница 19: ...eaker Status 3 GPS Option Active bars indicate accuracy 4 Bluetooth Active 5 External Battery Indicator 6 Internal Battery Indicator 7 Last Record Number 8 Distance From Last Measurement 9 Left Right...

Страница 20: ...aph and long press to delete log in memory Change antenna mode Save a record and return to Locate Screen Pushbutton Pushbutton On Off On Off Not active Not active Highlights active graphing button Del...

Страница 21: ...me Review mode Deletes highlighted log Save last reading to graph Moves curser right and also used to confirm delete Short press rejects last record and long press to clear graph Pushbutton Moves curs...

Страница 22: ...Rechargeable Batteries internal Pushbutton Display Impact Protection Accessories Port Impact Protection Mini USB Port Charging Socket Model Serial AA Battery Pack Removable Accessory Charging Sockets...

Страница 23: ...er and the mains supply The LED indicator should change from off to red when the charger is connected When the batteries are charged the LED indicator will change from red to green Charge time will va...

Страница 24: ...y it is recommended that the speaker volume be set to Med and the backlight set to Low Frequency and Locate Mode functions are written in green This is to indicate that there is a sub menu to choose f...

Страница 25: ...r purchased See the transmitter section for suggestions of which frequency is best suited to specific applications The and pushbuttons are used to navigate the list of frequencies To add a frequency t...

Страница 26: ...eak Mode Increased sensitivity but sharpness reduced Useful for deep pipes Peak with Arrows Mode Largest signal over the pipe Includes left right guidance arrows Null Mode Minimum signal over the pipe...

Страница 27: ...o the anode bed It will be necessary to adjust the sensitivity of the receiver to keep the signal strength within the signal strength scale If the signal is very low on the scale pressing the pushbutt...

Страница 28: ...e largest signal is found and the line indicator is pointing at North and South position b The receiver is now over and the handle is in line with the pipe a b 6 Using the vLocDM Receiver NOTE The lar...

Страница 29: ...press the i pushbutton The display will show the following screen whilst the measurement is made After approximately 4 seconds the result will be displayed as below 6 Using the vLocDM Receiver 600mA 2...

Страница 30: ...return to the Locate Screen 6 5 Graphing the Results Graphing the results can be done with or without the GPS function activated However if the GPS function is not activated the generated graph will...

Страница 31: ...tify your position on the graph as you walk back to a point of interest The indicator will identify the point when it detects that it is within 25m If the points are closer than 25m it will show the n...

Страница 32: ...e The A frame should be plugged into the accessory port The receiver will automatically recognise the A frame and enter the fault find mode 1 Position Indicator Bar 2 Depth to centre of pipe at this p...

Страница 33: ...s before this point Place the A frame in the ground with the A frame in line the green pin pointing towards the suspected fault and directly above the pipe The signal strength will be displayed if the...

Страница 34: ...is is the location of the defect Repeating the procedure across the pipeline will help pinpoint the defect in the other plane See diagram below Continue walking in the direction of the arrow placing t...

Страница 35: ...he A frame from making a good connection to ground Road Black Top 6 6 3 Using the A frame where there are Many Defects Such As Porous Coating Poorly coated pipelines such as old bitchumin coating may...

Страница 36: ...iew Screen When in the graphing screen pressing and holding the i pushbutton enters into the Review Screen This enables the user to scroll through the logged points A blue vertical line identifies the...

Страница 37: ...select the device The system is now paired with this device It will not be necessary to pair again unless the unit is paired with a different device That is to say the locator can only be paired with...

Страница 38: ...cies Moving the instrument whilst the unit is calculating the information will cause the strong earths magnetic field to induce an interfering signal into the sensors resulting in errors The vLocDM mu...

Страница 39: ...cause errors Take readings before and after the sleeve If they are the same the pipeline is well insulated through the sleeve Sleeves are very often used at road crossings ii Adjacent Pipes or Cables...

Страница 40: ...th Windows 2000 Windows XP and Windows Vista Upload Log to PC and Clear Log in Receiver 1 Once the application s loaded to the PC a shortcut should appear on the PC desktop similar to the icon below 2...

Страница 41: ...ar the receiver s log by clicking on the Log Clear icon Be sure that the file has been saved before clearing the log 7 Press Google Earth to create a kml Google Earth file Importing a txt File into an...

Страница 42: ...ted Distance 2 Insert 0 at the top cell first Accumulated Distance 3 Place the pointer over the second empty Accumulated Distance cell and key in then click on the second Distance cell then key in the...

Страница 43: ...wnload a normal DM file Instead of clicking on the Log Upload button choose Google Earth 2 The Application will ask where you want the file to be placed Select a file location and save the file A kml...

Страница 44: ...nts at the application point or the cable leading to the ground bed If in doubt check the section using the A frame Whether Logarithmic or Linear scales are used is a matter of personal preference How...

Страница 45: ...e Cable Care and Maintenance 9 Care and Maintenance Method 1 Set the transmitter to 128Hz 98Hz if in a 60Hz environment 3Hz 6Hz Set the current to 100mA 2 Set the locator to receive 128Hz or 98Hz Posi...

Страница 46: ...tometer for low frequency DM measurements Batteries Rechargeable 6 x AA Ni MH batteries internal with 100 240V AC mains charger Replaceable 6 x standard alkaline AA batteries batteries can be used whe...

Страница 47: ...use in cast iron pipes as well as non metallic pipes 1 x AA battery 10 Data Sheet C Operational Item Information Displayed Parameter Signal strength moving bar graph numeric value Mode indication Pea...

Страница 48: ...using two horizontal antennas Broad Peak using one horizontal antenna Null using one vertical antenna with proportional left right indications Power 50 50 150 250Hz Power 60 60 180 300Hz Radio Mode 22...

Страница 49: ...3m Depth range Dependent on strength of signal radiating to locator generally up to 15ft 5m D Sensitivity Mode Sensitivity at 3 2ft 1m 3Hz DM Mapping frequency 1 mA 50 Hz Power mode Radio mode 512 Hz...

Страница 50: ...th transmitter 16 7 L x 10 3 W x 12 9 H 425 L x 262 W x 328 H mm Monochrome dot matrix display 2 4 60mm x 1 3 32mm Cathodic Protection nominally 50V DC 100 250V AC mains power or 12V DC external suppl...

Страница 51: ...4Hz 8Hz 98Hz ELF4 4Hz 8Hz 128Hz 3Hz 6Hz 512Hz 3Hz 6Hz 640Hz 4Hz 8Hz 512Hz 4Hz 8Hz 640Hz Other multiple frequencies in the range of 3Hz to 2 kHz available upon request Powered by AC 150W Powered by DC...

Страница 52: ...ine to another line or lines The information visually available on the dot matrix display A generic term for any buried pipe or cable A minimum response to a buried line A locate where the receiver se...

Страница 53: ...claimer All product availability or product accessory information is subject to change without notice Target Line Trace Sonde A small transmitting coil which may be built into a product such as a sewe...

Страница 54: ...Notes Vivax Metrotech Corporation 3251 Olcott St Santa Clara CA 95054 USA Website www vivax metrotech com...

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