Utilities by niusheng11

VIEWS: 4 PAGES: 27

									Part II
1. How does it work?
2. What makes our locator different?
3. Working with a sonde
4. Ridgid line locators
Part II
1. How   does it work?
2.
3.
4.
    1. How does a line locator work?
    1.1 What’s the system?

      – A line “sends out” a signal


      – The line locator (receiver) reads
        this signal through its antenna(s)


      – The locator “translates” the
        signals to be interpreted by the
        user




3       Company Confidential
    1. How does a line locator work?
    1.2 Sending out a signal!

       – 2 ways:

          Active (strongest signal):
             Manually connect a line transmitter
             onto a line
             Choose yourself the signal and
             frequence

          Passive:
             Use the signals which are already
             present: “earth” signal or electric
             frequence (50Hz)

4       Company Confidential
    1. How does a line locator work?
    1.2.1 Active: how to connect?
1. Direct connect
    Connect the line transmitter to the line, a valve, a joint, a
    crane etc …

    You can connect both clamps (start/end of line)

    You can connect one clamp on the line and the second you connect
    to an earth




                                                      Signal by contact
5         Company Confidential
    1. How does a line locator work?
    1.2.1 Active: ways to connect
2. Signal clamp around the line
    You cannot or don’t want to touch the line
    directly
    - Electric
    - Phone
    - Cable TV
    - Multimedia
    -…




                                                 Signal through induction

6         Company Confidential
    1. How does a line locator work?
    1.2.1 Active: ways to connect
3. Induction
• Transsmitter is placed on top of the line
• Advantage: no need to connect
• Disadvantage: no idea what happens with the signal
    • Quality, received by the line?...
    • All lines in the ground are activated...




7       Company Confidential
    1. How does a line locator work?
    1.2.4 Active: what signal (frequency)
       ULine locator and transmitter are put on the same
       frequence (electromagnetic signal)

       Which frequence?

       -Lower frequency
           - Goes further
           - Stays “true” to the line (less chance of “coupling”)
           - Signal stops when a hurdle comes (bad
           conductor, rusted valve...)
                                                                    Geleiding
       -Higher frequency
                                                                     Copper
            - Risk of coupling                                      Aluminum
            - Can pass hurdles
                                                                      Steel
                                                                     Ductile

    Tip: first use the lower frequency!

                                                        Coupling
8          Company Confidential
    1. How does a line locator work?
    1.2.2 Passive: by using the line locator only
       When you cannot connect a line
        transmitters onto a line
       What? Use signals present
         – Line works like a radio antenna
         – Signal strength depends on the
           conditions ( proximity of other lines and
           metal, type of underground...)
       Note: not all lines to be found!




9         Company Confidential
    1. How does a line locator work?
 1.3 Difference working with and without line transmitter

    With line transmitter (active):
      – Can find almost all lines
      – Has a stronger signal thus more precise
      – You have to connect onto a line
    Without line transmitter (Passive)
      – No need to connect!
      – But not all lines to be found
          •   A small line (eg small phone line)
          •   A short piece of line
          •   A balanced HV line
          •   A bad conductor

Note about using line location inside a house: limited use:
  - lights, PC’s, electric cables etc... All disturb the signal
  - small room and many metallic objects disturb the signal

10      Company Confidential
Part II
1. How does it work?
2. What makes our locator different?
3.
4.
 2. What makes our locator different?
2.1 Use of a graphic screen
 1D Antennes (single direction)        3D Antenne




                                                    Extra!
 By using 3D antennas we are able
 to provide more information and all
 in “real-time” !




12     Company Confidential
 2. What makes our locator different?
2.1 Use of a graphic screen
                      This number increases when you go into the direction of the line



                              2                                De arrows tell the
                                                               user to go to the
                                                               left/right to go to the
                                          3                    line
                                          4
                              1
 Depth always on
 screen! (Even when
 passive locating)
                         De line gives you the direction of the searched line. The
                         line on the screen will turn also when the underground line
                         turns
            All this information is CONSTANT available
13     Company Confidential
 2. What makes our locator different?
2.2 Omniseek




                        Line 1     Line 2

             You can see more lines on one screen!

14   Company Confidential
 2. What makes our locator different?
2.3 How you approach the line doesn’t matter for a 3D
antenna!
 1D Antennes                 3D Antenne



      Signal cannot pass




                                                   Stroomleiding
     Not visible                      Visible!
     When walking towards a line in front of you
15    Company Confidential
Part II
1. How does it work?
2. What makes our locator different?
3. Working     with a sonde
4.
 3. Working with a “sonde”
     3.1 How to find a non-metallic line
                                           Using an inspection camera
                                           Using a separate sonde




                   Sonde
17      Company Confidential
 3. Working with a “sonde”
     3.2 How to find a sceptic tank?




     Floating Sonde
     512 Hz




18      Company Confidential
   3. Working with a “sonde”
                                                Peak
  3.3 Single direction antenna?
                                                       False
                        Signal                         Peak
                                 False
                                 Peak




By using single direction antenna you can end
            up at the wrong place!
 19      Company Confidential
 3. Working with a “sonde”
 3.4 With 3D antenna?
                            Signal




     Max signal = transmitter
20   Company Confidential
Part II
1. How does it work?
2. What makes our locator different?
3. Working with a sonde
4. Ridgid   line locators
 4. RIDGID equipment
    Line locators
     – SR-20
     – SR-60
    Line transmitters
     – ST-305
     – ST-510
     – ST-33Q
    Signal clamp




22    Company Confidential
 4. RIDGID equipment
 1. SR-20 line locator
 • 1 - 35kHz
 • 512Hz, 33kHz Sonde
 • Graphic screen
 • Supplied in plastic case
 • 4 x C batteries




23    Company Confidential
 4. RIDGID equipment
 2. SR-60 line locator
 • 1 - 93kHz
     • Higher frequency use when bad
     earthing
 • 512Hz, 33kHz sonde
 • Extra large graphic screen
 • Supplied in plastic case
 • 4 X C batteries




24   Company Confidential
 4. RIDGID equipment
     3. Line transmitters




 ST-305                        ST-510
 - 4 frequencies               - 27 frequencies
 (1kHz/8kHz/33kHz/93kHz)       - 10 Watt variable
 - 5 Watt variable             - LCD screen: Ohm, Watt …
 - 6 X C-cell batteries        - 8 x D-cell Batteries
 - Sound signal                - Sound signal




25      Company Confidential
 4. RIDGID equipment
     3. Line transmitters




     ST-33Q                           Signal clamp
     - 0-93kHz                        -2 LEDs
     - Strong transmitter                 - Clamp gets power
          Special induction antenna       - Clamp is closed
     - 5 Watt
     - LCD screen
     - 6 x C-cell Batteries
     - Sound signal

26       Company Confidential
                            End PART II




27   Company Confidential

								
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