MD Series Running Line
Crane Safety Systems
MD Series Running Line
The MD Series is a specialized Running Line Load Cell engineered to measure tension in ropes, wires, or cables as they move through a system.
It is commonly used in industries such as marine, construction, oil and gas, and other applications where monitoring tension in a line is critical for safety and performance.
Key Features of a Running Line Load Cell:
- Dynamic Tension Measurement: It measures the force exerted on the line as it moves, providing real-time data.
- Non-Invasive Design: These load cells often do not require cutting or modifying the line. They are mounted so the line passes through or over the device.
- Rope and Line Compatibility: They are designed to accommodate a variety of line diameters and materials, such as wire ropes, synthetic ropes, or cables.
- Durability: Often made from materials like stainless steel or other robust alloys to withstand harsh environments, especially in marine or offshore applications.
- Sensor Integration: Many include strain gauges or other sensors to measure tension accurately.
Output Options: These devices typically provide digital or analog signals for integration with monitoring systems, such as PLCs, computers, or wireless systems.
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| Key Features:
- The main sheave shaft incorporates an LP Series dynamometric shaft load cell, offering high safety factors and made from stainless steel.
- Side plates are standardly made from marine-grade anodized aluminum, with options for 304 stainless steel or nickel-coated steel alloy.
- Sheaves are made from steel with electrostatic painting, with optional materials including Nylon (GSM) or hard-anodized aluminum, manufactured according to DIN or ISO standards, specially machined to minimize cable damage.
- Available in two mounting configurations:
- Single side plate mounting
- Removable head mounting
- Fixation options include shackles, special supports, and articulated arms.
| Indicators
Multiple optional load indicators, speed and cable position indicators, wireless transmitters, and analog/digital outputs supporting all industrial protocols such as CAN, Modbus, PROFINET, and PROFIBUS:
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- Torium5-510MD – specifically designed for this type of load cell
- Integrated wireless transmitters with a range of up to 1000m
- o Wireless Indicator BD-2008
- Indicator BD-1908
- BD-WiVA and SGi-WA with 4-20mA / 0-10V analog output
- GLc Pocket with RS485 Modbus RTU serial output
- GLC Series, WT-LCC, among others.
| Available Capacities:
| Common Uses
- Winching Operations: To monitor and control tension in winch lines.
- Mooring Systems: For tracking tension in mooring ropes.
- Lifting and Rigging: Ensuring safe tension levels during hoisting.
- Towing: Monitoring line tension in towing operations.
- Cable Laying: Measuring tension in cables during installation.
- Load Limitation: Load limitation and measurement in load handling devices, cranes, winches, and overhead cranes (in combination with external controllers such as Krukload 500 and Torium5-510MD).
| Advantages:
- Provides continuous tension monitoring without halting operations.
- Prevents overloading and potential line failures.
- Enhances operational safety and efficiency.
| Working Principle of a Running Line Tension Meter MD Series
A Running Line Tension Meter operates by continuously measuring the tension in a moving rope, cable, or wire as it passes over a set of rollers or pulleys integrated into the device.
1. Mechanical Force Application – As the moving cable passes over the sheaves, the tension in the cable generates a mechanical force that is applied to the load-sensing mechanism.
2. Force Conversion – This force is then translated into an electrical signal using strain gauges or other sensor technology embedded in the load cell.
3. Signal Processing – The electrical signal is processed by an internal circuit, which converts it into a measurable output.
4. Data Output – The processed tension data can be displayed on a screen in real-time or transmitted to a control system, PLC, computer, or wireless device for monitoring and analysis.
This non-invasive measurement technique allows real-time monitoring of tension in applications like marine, offshore, construction, oil & gas, and winch operations, ensuring safety, efficiency, and load management.
