15T Telemetry Running Line Monitor


The DLM 15T Telemetry Running Line Monitor measures the tension on a rope passing through its three wheels. Typically used in cable laying and winch operations to measure and record line tension. The robust and wireless design has become an industry standard.

Key features

  • 800m wireless range
  • Compatible with TW-3.0 products
  • Fully sealed design to IP67
  • Robust design suitable for harsh environments
  • Integral speed and distance measurement as well as tension
  • Easy to rig without the need to remove sheaves from axles
  • Lifting and securing points
  • Optional mounting fixtures


  • Winch load monitoring
  • Towing and salvage
  • PLGR
  • Cable laying

Product specification

Frame Construction: CNC machined side plates fixed together using high tensile stainless steel bolts and supporting spacers. No welded joints. Dual frame construction (upper and lower) for easy rigging and rope insertion. O-ring sealed encoder protection casing. Sealed roller bearings used on all wheels.
Frame Finish: Galvanised prior to painting. Colour to suit customer requirements (orange and black as standard) Painted with marine grade paint
Wheel Material: EN24T alloy steel (Hardened to 40 Rockwell upon request).
Axles and Shear Pin Material: 17-4PH H1150 + 1150 stainless steel
Shear Pin Load Cell Axle: Suitable for line tensions up to 15t.
Wireless: The RLM transmits to one or more TW-3.0 display product using the licence free 2.4GHz frequency.
Load Cell: The load cell wirelessly transmits the load readings from an internal transmitter to the display. The transmitter is powered by a 3.7VDC rechargable battery.
Encoder: Mounted inside O-ring sealed Encoder casing bolted to frame. Push-Pull quadrature output powered by an 3.7VDC rechargable battery.
RLM Mounting: 4 machined eyes located on each side plate for easy rigging to spooling gear, or for use as lifting points. Machined stainless steel spacers double as lifting or carrying points.
Optional Extras: Fleeting gear, Mounting posts, Mounting brackets.
Equipment Needed: TW-3.0 Handheld Display or TW-3.0 USB Receiver and TW-3.0 RLM Display Software.
Other Available RLM Sizes: 60t, 200t.

Available Models & Accessories Table

Part Number Description Wheel Sizes
0001-1468 Tension, Speed & Distance 8mm to 36mm
0001-1469 Tension Only 8mm to 36mm
0001-1452 Tethering Arm