3M EMS Warning Tape 7900-XT – Electronic Marking System
Product overview
3M EMS Warning Tape 7900-XT Tape offers a maintenance-free solution for marking and locating underground utilities. It helps eliminate the problems and costs associated with traditional tracer wires and test stations. This 3M underground cable tape features embedded markers that work seamlessly with 3M Dynatel Locators 7000 Series, providing accurate and reliable location data without requiring external power sources. Ideal for open trench applications, the 7900-XT series incorporates high-strength core materials that alert excavators to the presence of underground assets. This helps to avoid accidental damage during excavation.
3M EMS 7900-XT Tape – Underground Electric Warning Tape
This 3M EMS 7900-XT Tape ensures efficient, quick and reliable underground asset detection. With unique RF frequencies, the tape’s embedded markers provide an early warning to excavators, reducing the risk of accidental damage to utilities. The high-strength core materials ensure durability, while the independent operation of each marker guarantees accuracy even if part of the tape is cut or removed. Offering maximum burial depths of 4 feet (1.2 m), this tape is available in multiple bright colours. This makes it easy to identify different utilities across power, water, gas, and telecommunications industries.
Key Features & Benefits
- Maintenance-free underground marking for utilities
- High-strength core material provides early excavation warning
- Compatible with 3M Dynatel Locator 7000 Series
- Passive markers work independently for accurate detection
- Available in 6 frequencies for unique utility identification
- No need for external power sources or transmitters
- 4 ft (1.2 m) maximum 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 EMS 7900-XT Tape – Buried Cable Tape for Underground Utility Marking
This 3M EMS 7900-XT Warning Tape provides a fast, easy and reliable system for marking underground utilities. With no need for access points or additional equipment, this tape helps you locate assets efficiently and minimise risks.
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 Warning Tape 7900-XT – 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-XT | 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-XT | 4”/240lb (10cm/1kN), 6”/360lb (15cm/1.6kN), 12”/720lb (30cm/3.2kN), Core material fully stretched 3000lb (13kN) * | 6”/360lb (15cm/1.6kN), Core material fully stretched 3000lb (13kN) * | 4” (10cm) - 25% (+/- 4%) at ultimate break, 6” (15cm) - 25% (+/- 4%) at ultimate break, 12” (30cm) - 50% (+/- 4%) at ultimate break | Less than 1.5% at 90% of ultimate break strength. | 4” (10cm) width - 21 LBS/500 ft (9.5 kg/150m), 6” (15cm) width - 24 LBS/500 ft (10.9 kg/150m), 12” (30cm) width - 34 LBS/500 ft (15.4 kg/150m) | 80 Mil (2.03mm) + 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-XT | -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-XT | 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-XT | Telecom | Orange | 48.8 kHz |
| 7902-XT | Power | Red | 34.9 kHz |
| 7903-XT | Water | Blue | 73.5 kHz |
| 7904-XT | Wastewater | Green | 41.4 kHz |
| 7905-XT | Gas | Yellow | 53.9 kHz |
| 7908-XT | Reclaimed Water | Purple | 44.9 kHz |