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Accidents

Accidents are caused by structural collapse. Structural collapse occurs mainly due to overload by itself, or overload in relation to weather conditions

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The solution to the problem of unpredictable load distribution

Hanging tons of sound and lighting equipment above spectators and performers is a serious matter, especially in light of the trend of increasing load weight and movement.

Scientifically, each time there are more than two hoists on a truss, or more than three hoists in a structure? there will occur the state of a "Statically Indeterminate Structure", which results in unpredictable load distribution. In most cases this will cause load imbalance, where some of the hoists may reach overload while others carry only a smart part of the load/

Furthermore, it has been shown experimentally, that a visually balanced structure is prone to have imbalanced load distribution, and some of the hoists might end up overloaded - in extreme cases even severely so.

This may be exacerbated by weather effects such as winds or snow build-up on a roof. These conditions might reduce the overload tolerance of the structure which carries the rigging.

Thus, overload situations might happen to the most experienced riggers, even if each hanging point's load is calculated and the calculation falls within the limitations of the nominal hoist and truss capacity. The actual load distribution on the truss is still unpredictable and cannot be calculated, or even estimated.

The solution to the need of ensuring safe installations and shows is real-time load monitoring and overload detection.

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Awards

The Ron StageMaster 5000 and 7000 have won the PLASA 08 Award for Innovation! With this industry acclaim they join the Ron StageMaster 6000, which has won the LDI 2007 prize for Best Debuting Product of the Year in the Staging, Rigging, & Special Effects.

Description

Ron StageMaster 7000 Wireless Premium is a wireless, multi-frequency, multi load-cell, stage safety device for load control and overload prevention. This top-of-the-line development is based on our 30 years experience in load monitoring and crane scale design and manufacturing.

This laptop based system is a real-time monitor of load-map that can be overlaid on stage-plan layout (e.g AutoCad). The user can assign a name to each predetermined group and easily redefine the group members as required. Using the logical Zoom In and Zoom Out enables the user to simultaneously monitor on one screen 96 individual hanging points, summary of several points (groups) and of the entire structure. The system is configurable with up to 96 load cells per system. It may be integrated with the Ron StageMaster 5000 Single Wire and together monitor on one screen a total of up to 328 load cells: 72 wireless load cells and 256 load cells on single wire.

Ron StageMaster enables monitoring all the loads during installation and throughout the entire show, detecting Overload, Zero, Tare, Sum, Max and readout resolution for each load cell or any of the predetermined groups. The downloadable Data Log of weeks of continuous measurements is comprised of Operator Name, Time, Weight, Overload situations and the Total Cumulative Weight for each group. It enables documentation of each show with detailed report and statistical analysis. The Set Points may be used for alarming and/or stopping the hoists in overload and underload situations. New: Optional real time cellular SMS alert on overload occurrence, and optional customized PDA for on-the-go load monitoring.

Ron StageMaster is user-friendly and easy to operate and configure for each project. The wireless communication between load cells and receiver enables fast, easy and neat installation. The load cells' small dimensions provide outstandingly low headroom loss as well as portability. The battery life of up to 1500 hours on common disposable batteries provides plug-and-forget advantage.

Technical Specifications and Options




* Acrobat 7 (and up) required. If you do not have the correct version, please click on the following link to download

Dimensions Table and Drawing






* USE SHACKLES WITH S.W.L.
(SAFE WORKING LOAD) EQUAL TO,
OR GREATER THAN SYSTEM'S FULL RANGE.
* The company reserves the right to
make changes without notice.
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* Acrobat 7 (and up) required. If you do not have the correct version, please click on the following link to download

Ron Crane Scales, Eilon Engineering
International phone (US toll free) +1-888-7788064
sales@ron-crane-scales.com

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