3M™ Dynatel™ Locators 7000 Series

3M™ Dynatel™ EMS Marker/Tape Locator 7420

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SKU: 7420 Category:

Product Overview: 3M™ Dynatel™ Locators 7000 Series


Based on existing Dynatel technology platform, the new 7420 locator will allow the user to locate EMS Caution Tape and existing electronic markers (balls, near-surface, full range, etc.). In addition, the locator will read/write to 3M iD markers. It is as easy as selecting “path” marker locating for EMS Caution Tape or “iD/EMS” for  point marker locating. The push of one button will provide the depth to any of the underground marking solutions.


3M Passive/iD & Caution Tape Marker Locate




Operating temperature      -4° F to 122° F (-20° C to 50° C)

Storage temperature          -4° F to 158° F (-20° C to 70° C)

Regulatory                           7420 (FCC Part 15), 7420E (CE)

Environmental Standard    IP54


3M EMS/iD Markers                             All 3M markers (telephone, gas, communication, power, water, wastewater and general purpose)

3M EMS 7600 Series Caution Tape      All 3M path marking caution tape (telephone or gas)


Maximum Write Range  3M iD Markers:

Near-Surface   6 in. (15 cm)

Ball Marker     12 in. (30 cm)

Full-Range       24 in. (61 cm)

7420 Maximum Read Range

3M iD Markers (with iD Chip):        (Telephone, Power, Gas, Water, Wastewater, Communications (CATV), General Purpose)

Near-Surface    3 ft. (0.9 m)

Ball Marker      5 ft. (1.5 m)

Full-Range        8 ft. (2.4 m)

Maximum Detection Depth 3M Passive Markers (no iD):

Near-Surface3 ft.   (0.9 m)

Ball Marker6 ft.     (1.8 m)

Mid-Range7 ft.      (2.1 m)

Full-Range9 ft.       (2.75 m)

Maximum Detection Depth

7600 Series Caution Tape             2 ft. (0.6 m)

Depth measurement accuracy     +/- (10% + 5 cm) or +/- (10% + 2 in.) up to specified depth of marker or caution tape  (Depth accuracy susceptible to high ambient noise conditions)


iD Marker Memory Storage:

Memory storage with date/time stamp     Read marker records 100

Written marker records                               100

User defined iD templates                           32

Marker depth memory storage                   Five with date/time stamp


Electrical Specifications:

Power                      Rechargeable battery pack (12V2R4A)2

Battery life:             8 hours typical3

Charging time         2.5 hours, with 90~240V AC adapter

Display                    Large graphic high-contrast LCD with backlight

Speaker                   0.25 W

Headphone jack     Standard mini phone jack

Serial port               Standard RS232 serial with DB9 connector(RS232 to USB adapter cable included)