Stock Status: AVAILABLE

Rope Clamp Load Cells

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Description:

The RC-xT range of rope clamp load cells are for measuring tension in wire ropes. These load cells have a double ended beam design and are available in 3T, 5T and 10T nominal capacities.

They are particularly well suited for retrospective installation onto wire ropes when approximate measurement of the load is required for remaining life calculations and basic load display and an in-line load cell is not readily available.

As they are calibrated in situ with the associated data logger or load limiter, they do not require specific tensioning.

  • Can be fitted retrospectively.
  • Sufficiently accurate for determining remaining design life of cranes and hoists.
  • Available in 3 capacities for measuring rated loads up to 3T, 5T and 10T per fall.
  • Can be fitted to ropes with diameters between 8 and 32mm.
  • IP67 rated.
  • Simple installation - clamp on, connect up 4 wires and calibrate in situ.
Part number Description
RC3T For ropes measuring up to 3 Tonnes per fall.
RC5T For ropes measuring up to 5 Tonnes per fall.
RC10T For ropes measuring up to 10 Tonnes per fall.

PHYSICAL SPECIFICATIONS

The RCxT load cells are designed to be clamped directly onto the dead end of wire ropes.

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Length (mm) 160
Width (mm) 80
Height (mm) 117
Weight (kg) 2.5
Mounting Clamp directly to the rope with u-bolts provided.
Torque N/A. Tighten up the clamp bolts until the back of the rope just touches the body of the load cell.

ELECTRICAL SPECIFICATIONS

Parameter Description Min Typ Max Units
Vin Excitation Voltage 10 12 15 VDC
Sens Sensitivity 1.9 2.0 2.1 % mV/V
CombErr Combined Error -0.05 +0.05 % Full Scale
MSO Maximum Safe Overload 150 % Full Scale
USO Ultimate Safe Overload 300 % Full Scale
IPClass Sealing Class IP67
Operating Temperature -30 70# °C

# Extended operation at maximum temperature will reduce device life.

Applications

What torque do these need to be clamped to?

As these load cells are calibrated in situ, they do not need to be torqued up to a specific value. Instead, tighten up the clamp bolts until the back of the rope just touches the body of the load cell.

I don't have a dead end on my rope. Can I still use one of these load cells?

Yes, provided that the compensating sheave doesn't move in normal use, in which case you can mount the load cell 1m below.

I want to accurately measure the load being picked up by my crane (to within a kg). Can I use this load cell?

No. You will need to measure the load directly as there is too much error caused by friction in the pulleys, sheave blocks and bearings. This can be up to 4% of the load being lifted.

Check out this video for a explanation.

I am replacing one load cell with another identical unit. Will I need to recalibrate my data logger / load limiter?

Yes, the calibration is specific to the load cell and its installation on the rope.

What devices can be connected to the RCxT?

These load cells are sold primarily for use with Sole Digital data loggers, load limiters and displays. However, they are just a strain gauge load cell so can be used wherever one of these is required.