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17 -

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.

Receiver: Peak mode

Transmitter: Indirect mode. Set output power set to LOW
Set the distance between transmitter and receiver to 1.5m / 5ft.

Set the distance between transmitter and receiver to 0.6m / 2ft
If 99.9% is displayed, press PEAK key to adjust sensitivity

What to check for:

A) Null mode: Arrows indicate the direction of the center line.

What to check for:

C) Peak mode: “HI “ is displayed when the

receiver is too close to the transmitter.

1.5 m / 5 ft.

What to check for:

B) Peak mode: Bar-graph indicates

maximum value above center line.

0.6 m / 2 ft.

Содержание MPL-21-E

Страница 1: ...Pipe Locator MPL 21 E Operation manual ...

Страница 2: ...Transmitter 7 4 2 Receiver 9 5 Operation of Transmitter 11 5 1 Direct connection mode 11 5 2 External coil mode 12 5 3 Indirect Inductive mode 13 6 Operation of Receiver 14 6 1 Null mode 14 6 2 Peak mode 15 6 3 Depth measurement 16 6 4 Depth measurement using Triangulation 16 7 Inspection method 17 8 Specification 19 8 1 General specification 19 8 2 Accuracy specification 20 ...

Страница 3: ...ese words in the manual or on decals on your equipment carefully read and follow all instructions Watch for these words and learn their meanings DANGER Imminent hazards which if not avoided will result in death or serious injury WARNING Potentially hazardous situation which if not avoided could result in death or serious injury CAUTION Potentially hazardous situation which if not avoided may resul...

Страница 4: ...Traffic hazards can result in death or serious injury Avoid moving vehicles Wear high visibility clothing WARNING Buried lines Always confirm your depth estimate by exposing target line by non destructive means WARNING Jobsite hazards can cause DEATH or SERIOUS INJURY Wear proper safety equipment NOTICE Remember this before searching and attempting any excavation activity NOTICE Use only alkaline ...

Страница 5: ...magnetic field is generated around it Location depth and current value of the buried pipe can be measured using the Receiver at the surface Features There are two modes of location measurement with error detection protection function Null mode This method detects the point of minimum sensitivity indicated with an arrow Two horizontal coils connected differentially allow you to locate the position ...

Страница 6: ...pth key above the buried object This method also measures the strength of the current of the signal B Triangulation method Method to measure using received sensitivity at Peak mode Differential coils allow low error depth measurements in noisy locations or using indirect methods The frequency of the signal used is 82kHz as this frequency can transmit a signal efficiently and can be received with g...

Страница 7: ... locator Connecting cable 1pc Used for Direct connection mode Ground rod 1pc Used for Direct connection mode Operating manual 1pc English version Carrying bag 1pc 3 2 Optional equipment Description Q ty Remark External coil 1pc Used for External coil mode Locating Directional Rod LDR 1pc Used for non conductive pipes such as PVC HDPE or fiberoptic ducts ...

Страница 8: ...n off key Output select key Low 10 Medium 30 Full 100 Sound select key 2 Sound on Initial setting 1 Transmitter sound off Function sound on 0 Sound off Signal current Indicator for Direct connection mode 4 more than 45mA 3 15mA 45mA 2 5mA 15mA 1 2mA 5mA When Signal current is less than 2mA bottom lamp will be blinking 2 Key function Indicator lamp 1 Appearance 1 Beeping sound emitted for Good sign...

Страница 9: ... good Slow blink Remaining battery life is low Fast blink Batteries can no longer be used Replace all batteries when the remaining life is low Always ensure that the batteries are inserted correctly before closing the compartment Connect the plug with the lock button facing upwards Unscrew to open the cover of battery compartment and replace all batteries Use six D LR20 13A Alkaline batteries ...

Страница 10: ...n measures the signal current 1 Appearance 2 Control panel Display Battery compartment Control panel Speaker Antenna part When in use set the antenna part as shown in the figure below When storing the receiver in the bag turn the antenna part in the same direction as the figure Bar graph Left or Right indicator for Null mode Sound setting Back Light setting Battery indicator Gear Icon Locating mod...

Страница 11: ... to start locating Gear Icon Version Setting screen 3 Sound Backlight setting Power on screen Unscrew to open the cover of battery compartment Take out the battery holder and replace the batteries with new ones 4 Battery indicator Battery replacement Battery 0 Battery 100 Always ensure that the batteries are inserted correctly before closing the compartment Replace all batteries when the battery l...

Страница 12: ...lip Wire cable Metal pipe Bottom lamp is blinking before clips are connected Check the grounded point Find the best place to ground to have a good signal loop indication Clean connection areaif rusted or painted to ensure a good electrical connection Note Place the Earth Ground as far as possible and at a right angle to the target line Black clip Ground stake Attach the Direct connecting cable 90 ...

Страница 13: ...heath When the external coil is connected to the Transmitter External coil mode is automatically selected Transmitting coil Telecom Power cable Diameter up to 10cm 4 The jaws do not have to be closed around the cable Top lamp is blinking Set the external coil Connect the External coil to the target line Note Keep the Receiver at least 5 m 16 ft away from the coil clamp when starting the locating w...

Страница 14: ...f the target object Place the Transmitter in an upright position at a 90 angle to the target line as shown in the figure below Target line 90 Target line 90 Top view An electromagnetic field is output from the coil built into the transmitter POWER Note Keep Receiver more than 10m 30ft away from transmitter when starting the locating work An Air coupling between Receiver and Transmitter adversely a...

Страница 15: ...scription Starting Null mode Locating method in NULL mode Determining the direction of the target line Target line Single continuous soundontheleftsideof the target line Two tone Alternating sound on the right side of the target line Target line Beep 160 210 520 Locating may be difficult because the display changes too quickly In such a case operate the receiver while holding down NULL key Locate ...

Страница 16: ...p of the target line The reception strength is automatically adjusted to 70 0 after pressing PEAK key Starting PEAK Mode When 99 9 is displayed press the PEAK key to adjust the sensitivity Target line Peak mode screen description Press PEAK key Locating method in PEAK mode To adjust the sensitivity of the reception strength 99 9 100 70 Receiving level Target line Note 99 9 is not the maximum peak ...

Страница 17: ...o 70 directly above the line While holding the locator vertically move it to the left and right until the meter drops to 50 Mark these points and measure the distance between them The distance between the two points is equal to the depth While holding down the Depth key the signal current value is displayed 90 Center of the pipe Hold the Receiver vertically place the receiver on the ground Press t...

Страница 18: ...ance between transmitter and receiver to 1 5m 5ft Set the distance between transmitter and receiver to 0 6m 2ft If 99 9 is displayed press PEAK key to adjust sensitivity What to check for A Null mode Arrows indicate the direction of the center line What to check for C Peak mode HI is displayed when the receiver is too close to the transmitter 1 5 m 5 ft What to check for B Peak mode Bar graph indi...

Страница 19: ...lips of the connecting cable to each other NOTE This inspection method is intended to check if there is a failure in the equipment This inspection method does not guarantee the accuracy of the equipment What to check for D Beep sounds to indicate the connection status of Good SIGNAL LOOP E All lamps on the Signal current indicator turn on Beep Beep All lamps turn on ...

Страница 20: ...ection grade IP54 Protection from splashed water Receiver RX Locating frequency 82 175 kHz 20Hz Battery type Four Alkaline LR6 AA Battery Life 30 hours 20 C 68 F speaker sound off backlight off Battery Status Continuous indication Power save function Automatically power off after 30minutes of inactivity Visual Indication LCD Bar graph digital number character include backlight Depth Display Range ...

Страница 21: ...curacy 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 Always excavate the line with non destructive means before digging ...

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