3M EMS Caution Tape 7900 – Electronic Marking System
Product overview
3M EMS 7900 Tape provides an efficient, virtually maintenance-free solution for marking and locating underground plastic pipes and conduits. This underground cable caution tape embeds passive electronic markers that activate with a 3M Dynatel Locator 7000 Series, ensuring accurate and reliable location detection without requiring external power sources. Designed for open trench applications, it helps eliminate the issues and costs associated with traditional tracer wires and test stations.
3M EMS 7900 Tape – Underground Electric Caution Tape
A reliable, long-lasting solution for marking underground assets in various industries. This electric cable caution tape allows for precise underground asset identification by creating a detectable path above ground. The tape’s embedded markers work independently and ensure continuity, even if you damage or remove a section. By removing the need for traditional tracer wires, it ensures easy and efficient underground cable location with minimal maintenance. Unlike traditional buried cable tape, 3M EMS 7900 Tape does not require batteries or external transmitters, making it a cost-effective and efficient cable marker tape solution. Available in multiple frequencies, it supports utility identification across telecommunications, power, gas, wastewater and recycled water applications.
Key Features & Benefits
- Maintenance-free underground marking tape for plastic pipes and conduits
- Passive markers detect without power or external transmitters
- Versatile installation near or above buried assets
- Easy detection using a 3M Dynatel Locator 7000 Series
- Reliable tracking even if sections are cut or removed
- Multiple frequencies for identifying telecom, power, gas, and more
- 4 ft (1.2 m) burial depth for effective underground visibility
- Bright colours for clear utility identification
- 500 ft (150 m) roll, 6 in (152.4 mm) width for extensive coverage
3M Locating and Marking System
Stress-free management and maintenance of underground assets requires tools you can depend on. 3M’s integrated locating and marking solutions are engineered to help bring you peace of mind as you take on your toughest challenges. Save time and money by quickly pinpointing the location of buried assets with 3M™ Point and Path Markers and our Electronic Marking System (EMS) technology. Designed to be placed in various ranges of burial depths, our markers protect your critical assets wherever they are.
For Additional Information, Marker Burial Depth Charts, 3M Dynatel Locator Selection Charts and more on the 3M EMS Caution Tape 7900 – Electronic Marking System, please consult the Technical Data Table or PDF Files below.
*Technical Data subject to change without notice.
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+44 (0)1744 762 929Technical Data
| Model | Max Burial Depth (ft) | Max Burial Depth (m) | No. of Frequencies |
Length (ft) | Length (m) | Width (in) | Width (mm) |
| 7900 | 4 | 1.2 | 6 | 500 | 150 | 6 | 152.4 |
PHYSICAL SPECIFICATIONS |
| Model | Tensile Strength | Break Strength (ASTM D6775) |
Elongation PE Film | Elongation Aramid Fiber | Weight Mfg. Tested | Thickness (ASTM D2103) |
Printability (EN 2613 Annex B) |
| 7900 | 6”/360lb (15cm/1.6kN) | - | 20% at failure | N/A | 6” (15cm) width - 18 LBS/500 ft (8.1 kg/150m) | 11 MIL (.28mm) + 2 cm at RF marker | Chemical Resistance to Ammonium Sulphide** |
* The core material is installed in a sine wave pattern.
** Accelerated acidic soil survival test by submerging in ammonium sulphide for 15 days.
ENVIRONMENTAL SPECIFICATIONS |
| Model | Operating Temp | Storage Temp | Environmental Standard | Impact Rating of Marker | Chemical Resistance |
| 7900 | -4° F to 122° F (-20° C to 50° C) | -4° F to 140° F (-20° C to 60° C) | IP68 (Designed to be buried and immersible) | IK-9 (Tag) | Excellent resistance to acids. Good resistance to alkalis. |
ELECTRICAL SPECIFICATIONS |
| Model | Marker Detection Depth | Nominal Distance Between Markers | Min Separation from Metallic Facilities |
| 7900 | 4’ (1.2 m) for 3M Dynatel™ Locators 7420, 7550 and 7573. 3’ (.9 m) for 3M Dynatel Locator 1420-iD, 2250MiD,2273M-iD, 2550-iD and 2573-iD (for units with compatible hardware) |
8ft. (2.4m) | 4 in (10 cm) |
INDUSTRY SPECIFICATIONS |
| Model | Utility | Colour | Frequency |
| 7901 | Telecom | Orange | 48.8 kHz |
| 7902 | Power | Red | 34.9 kHz |
| 7903 | Water | Blue | 73.5 kHz |
| 7904 | Wastewater | Green | 41.4 kHz |
| 7905 | Gas | Yellow | 53.9 kHz |
| 7908 | Reclaimed Water | Purple | 44.9 kHz |