Crosby Straightpoint Load Monitoring: Radiolink Plus and Loadshackles

Knowing what a load is doing is an important part of a well-planned lifting operation. A measured tension reading can help a lifting team assess conditions, follow the lift plan, and recognize when an operation needs to pause for review. Crosby Straightpoint load monitoring devices bring that information to a handheld display or compatible software, helping teams make decisions without relying on appearance or guesswork alone.

Two options are the Radiolink Plus wireless tension load cell and the Wireless Loadshackle. Both provide load measurement, but their physical arrangements suit different installation requirements. Understanding those differences, along with the limits of the measurement system, is essential when selecting equipment.

What Does a Load Monitoring Device Measure?

A tension load cell measures the force applied through its intended loading path. In a suitable weighing arrangement, that measurement can help establish the supported load. During movement, readings can also change as forces change. The displayed value must therefore be interpreted in the context of the complete rigging arrangement and the manufacturer's instructions.

A reading at one connection is not automatically the weight of the entire object or the load on every other component. Sling angles, multiple support points, and load distribution affect how forces travel through a lifting assembly. The lift plan should identify what is being measured and how the team will use that information.

Monitoring is a decision-support tool, not a substitute for load calculations, rated equipment, competent personnel, or crane operating limits. A low reading at one point does not establish that the whole operation is safe.

Radiolink Plus: Wireless Tension Load Measurement

Crosby Straightpoint Radiolink Plus is a wireless tension load cell designed to be rigged with compatible Crosby standard shackles. Its separate load-link body provides a measurement point within a suitable tension-loaded assembly, with readings sent to a compatible handheld display or software.

Wireless, Bluetooth and Hazardous-Area Versions

The manufacturer lists long-range 2.4 GHz wireless, Bluetooth, and ATEX/IECEx versions. These are distinct configurations: a standard wireless model should not be assumed to have Bluetooth connectivity or hazardous-area certification. Select the required version and check its matching receiver, software, and certification before purchase or use.

Published maximum communication ranges also differ by version. The manufacturer's product page lists up to 1,000 metres for the long-range system, 100 metres for Bluetooth, and 500 metres for the ATEX/IECEx version. Treat these as published maximums, not a guarantee of reception at a particular worksite. Verify communication in the actual operating environment before starting the task.

Match the Model to the Measurement Task

Review the selected model's rated capacity, resolution, accuracy, dimensions, and compatible shackles. Do not choose from a product-family capacity range alone. Confirm the current datasheet and supplied documentation for the exact unit, particularly when the application involves changing forces or restricted clearance.

Wireless Loadshackle: Measurement at the Shackle Connection

The Wireless Loadshackle combines a shackle connection with load measurement. It is an option to consider where available headroom or the arrangement of the lifting assembly makes a separate load link less practical. Suitability still depends on the specific shackle, connection geometry, load direction, and equipment documentation.

Loading Alignment Matters

The manufacturer's Wireless Loadshackle manual calls for central loading in the shackle bow and avoidance of torsional and off-axis loads. Pin and load-bobbin alignment also matter. Follow the instructions for the complete assembly rather than treating the instrument as interchangeable with any ordinary shackle.

Use the specified shackles, pins, and accessories. Do not grind, drill, stamp, or otherwise modify the load-bearing body. Significant damage or deformation requires evaluation in accordance with the manufacturer's instructions.

How to Select a Load Monitoring Device

Start with the intended measurement and the complete lifting arrangement, then review the equipment with a qualified specialist. Useful selection questions include:

• What force needs to be measured, and at which connection?
• What rated capacity and measurement resolution does the task require?
• How much headroom and physical clearance are available?
• Are the attachment points and hardware compatible with the instrument?
• Which display, wireless version, or software configuration is required?
• What temperature, moisture, and hazardous-area requirements apply?
• What inspection, calibration, and documentation requirements govern the work?

Environmental protection ratings and hazardous-area approvals are not interchangeable. Confirm each required rating for the exact model and configuration rather than extending one product's specifications to the entire range.

Pre-Use Setup and Communication Checks

Before the operation, review the manufacturer's pre-use inspection criteria, identify the instrument and its documentation, and confirm that its calibration status meets the task's requirements. Inspect the load-bearing parts and electronics for damage, check batteries, and establish a dependable connection to the intended display.

Confirm the measurement units and understand the zero or tare setting. The Wireless Loadshackle manual specifically notes that any zeroed dead load must still be included in the ultimate load calculation. Zeroing a display does not remove the physical force already acting on the equipment.

The team should also agree on who watches the readings, how changes will be communicated, and what conditions require a pause. If readings are unexpected or communication is lost, follow the lift plan and applicable equipment procedures rather than continuing on assumptions.

Inspection, Calibration and Equipment Care

Protect the device from impact during handling and storage. Keep identification and documentation available so the instrument, calibration record, and application can be matched correctly. Check the manufacturer’s cleaning, storage, and inspection instructions rather than applying a generic maintenance routine.

Calibration frequency should reflect the specific instrument, usage, and service conditions. The Wireless Loadshackle manual calls for regular inspection and calibration, with frequency based on application and use. Inspection and calibration serve different purposes: a current calibration record does not establish that equipment damaged afterwards is fit for service.

Discuss Load Monitoring Requirements with Hercules

Radiolink Plus and Wireless Loadshackle offer different ways to introduce measured load information into an operation. The right choice starts with the task, connection geometry, operating environment, and documentation requirements, not simply the largest capacity or longest advertised wireless range.

When discussing options with Hercules, bring the intended load information, rigging arrangement, clearance limits, and receiver requirements. Those details provide a stronger starting point for selecting equipment and identifying the manufacturer guidance needed before use.