If you're unsure which crane weighing system is best for you, please consider the following points which may help lead you in the right direction.
DEAD END VERSUS LINE RIDER
If the wire rope has an accessible dead end to which a weighing device can be attached to (via hook, shackle, etc), then our most appropriate crane scale systems are Tension Link Dynamometers, Hanging Crane Scales, or S-Type load cells. If the wire rope does not have an accesible end, then you may need to consider a Floater Crane Scale or Deadline sensor which can both attach to the middle of wire rope rather then the ends. Finally, custom load pins can be used in a variety of tension applications where the load being applied is supported by a pin.
HEAD SPACE
Sometimes crane scales are limited by available head space. If this may be an issue for you, be sure to look at the dimensions of the weighing device and consider its length! If head space is a significant issue, Custom Load Pins, Floater Crane Scales, and Deadline Sensors may be an option but you will sacrifice tension load accuracy with these weighing systems.
ACCURACY
Accuracy is a very important consideration when selecting the right crane weighing system. S-Type load cells have the highest degree of accuracy at 0.1% of full scale capacity (FS) and are used in precision weighing applications. Tension links are the next best at 0.25% FS but are more robust and resistant to side loading than S-Type. Deadline sensors, Load Pins, and Floater Crane Scales are the least accurate at ranges of 0.5% to 2% accuracy and are considered as safety devices rather than weigh scales. |
