TAKACHIHO MPL-21-E Operation Manual
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TAKACHIHO MPL-21-E Operation Manual

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Pipe Locator MPL-21-E
Operation manual

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Summary of Contents for TAKACHIHO MPL-21-E

  • Page 1 Pipe Locator MPL-21-E Operation manual...

  • Page 2: Table Of Contents

    Table of Content 1. SAFETY..............................2 2.Introduction ............................... 4 3. Composition ............................. 6 3.1 Main equipment & standard accessories ................6 3.2 Optional equipment ......................... 6 4. Description of parts & basic operation ................... 7 4.1 Transmitter ............................7 4.2 Receiver .............................. 9 5.

  • Page 3: Safety

    1. SAFETY Always locate with proper respect and caution. Equipment misuse or carelessness can result in serious injury or damage to property. Always follow safety rules. HAZARD ALERT INFORMATION BE AWARE OF SAFETY INFORMATION This is a safety-alert sign. This is placed in the manual and on your equipment to alert you to the potential for bodily injury or death.
  • Page 4 GENERAL SAFETY DANGER Do not attempt to connect to live power without proper protective equipment and training. DANGER ELECTRIC SHOCK Death or serious injury will result NOTICE: Do not apply more than 250 volts across clips. More than 250 volts will damage transmitter.

  • Page 5: Introduction

    2.Introduction This product is a high-performance digital measurement tool used to measure the location and the depth of buried cables / metal pipes from the ground. By adopting a Digital Signal Processor (DSP), the digital correction of the measured data provides measurements with high precision and stability.
  • Page 6 Peak mode: This method detects the point of maximum sensitivity. Two horizontal coils connected differentially allow you to locate the position of the buried object without error. High Receiving level Differential coil Pipe / Cable • Two depth measurement modes A) Standard Depth Measurement: Method of calculating depth from sensitivity received by upper and lower coils Measure the depth in real time by pressing the Depth key above the buried object.

  • Page 7: Composition

    3. Composition 3.1 Main equipment & standard accessories Description Q’ty Remark Transmitter Unit Used as a signal generator. Receiver Unit Digital locator Connecting cable Used for Direct connection mode Ground rod Used for Direct connection mode Operating manual English version Carrying bag 3.2 Optional equipment Description...

  • Page 8: Description Of Parts & Basic Operation

    4. Description of parts & basic operation 4.1 Transmitter 1) Appearance Control panel Retaining screw Battery compartment Connector cover Output connector 2) Key function & Indicator lamp Output power level Battery indicator When external coil is connected, top lamp is blinking. Sound select key Power on/off key Output select key...
  • Page 9 3) Connector Connect the plug with the lock While pressing the lock button, pull button facing upwards out the plug to remove 4) Battery indicator & Battery replacement Green Lamp indicates the battery status. Continuous lighting：Battery condition is good. Slow blink：Remaining battery life is low. Fast blink：Batteries can no longer be used.

  • Page 10: Receiver

    4.2 Receiver 1) Appearance When in use, set the antenna part as shown in the figure below Control panel Battery compartment When storing the Speaker receiver in the bag, turn Antenna part the antenna part in the same direction as the figure.
  • Page 11 3) Sound & Backlight setting a) Press DEPTH key when Gear-Icon appears Gear-Icon just after start-up to enter sound settings menu. Version b) Select Sound options by pressing NULL key. Power on screen S-0: sound off S-1: low volume S-2: high volume c) Select Backlight options by pressing PEAK key.

  • Page 12: Operation Of Transmitter

    5. Operation of Transmitter 5.1 Direct connection mode A specific route can be detected in Direct Connection mode. Use the two pronged connecting cables (3 m/10 ft.) which are included in the carrying case as a standard accessory. Attach the Direct connecting cable When the connecting cable is connected to the Transmitter, Direct Connection mode is automatically selected.

  • Page 13: External Coil Mode

    5.2 External coil mode External coil supplied as an optional component. Use this mode if object is accessible but a direct connection is impossible. An induced current, generated by the coil in the External coil attachment, is applied directly to the exposed part of the cable / pipe to be located. Applicable to: Live Telecom cable or Live Power cable.

  • Page 14: Indirect (Inductive) Mode

    5.3 Indirect (Inductive) mode If there is not direct access to the target line, the transmitter can generate signal current into the object by an electromagnetic field output from the bottom of the transmitter When nothing is connected to the transmitter, Indirect mode is automatically selected. An electromagnetic field is output from the coil built into the transmitter.

  • Page 15: Operation Of Receiver

    6. Operation of Receiver 6.1 Null mode Starting Null mode Null mode screen description Bar-graph Direction of the object Press NULL key. Reception strength Locating method in NULL mode When directly above the target line, both arrows appear indicating the center, the bar-graph indicates maximum, and BEEP sound is emitted.

  • Page 16: Peak Mode

    6.2 Peak mode Peak mode screen description Starting PEAK Mode Bar-graph Reception strength Press PEAK key. *The reception strength is automatically adjusted to 70.0% after pressing PEAK key, Locating method in PEAK mode Maximum (peak) value, the precise position and direction, are obtained when the receiver is located on the top of the target line OUT OF RANGE Percentage of the reception...

  • Page 17: Depth Measurement

    6.3 Depth measurement Once the precise location of the targett line has been determined, press the Depth key to display the distance from the bottom of the Receiver to the target line. Note: Depth reading is a calculation of received signal strength. Hold the Receiver vertically, place the receiver on the ground.

  • Page 18: Inspection Method

    7. Inspecting equipment Receiver: Null mode Transmitter: Indirect mode. Set the output power to LOW. Set the distance between transmitter and receiver to 1.5m / 5ft. 1.5 m / 5 ft. What to check for: A) Null mode: Arrows indicate the direction of the center line. Receiver: Peak mode Transmitter: Indirect mode.
  • Page 19 Transmitter: Direct connection mode Connect the connecting cable to the transmitter. Turn on the transmitter. Set the output power to FULL. Connect the red and black clips of the connecting cable to each other. Beep Beep All lamps turn on What to check for: D) Beep sounds to indicate the connection status of "Good SIGNAL LOOP".

  • Page 20: Specification

    8. Specification General specification Transmitter (TX) Output frequency 82.175 kHz0.02% Output power 1 watt maximum Operating Modes Direct connection mode, Inductive mode External coil mode (optional ) Battery type Six Alkaline LR20 “D” Battery Life Direct mode : 50 hours (Output 4 mA , 20C / 68F) Full Power(1W) : 20 hours (20C / 68F) Battery Status...

  • Page 21: Accuracy Specification

    Accuracy specification Locating accuracy 2.0 m  4 cm / 6.5 ft.  1.6 in. 3.0 m  9 cm / 10 ft.  3.5 in. Depth accuracy 2.0m  5 % / 6.5 ft.  5% 3.0m  10 % / 10ft. 10% NOTE) Locators are tested in test field conditions with no adjacent signals.

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