Skills & Expertise

The designers asked new questions: How do you reduce the cost of truck scale ownership?

As they began the development of the new BridgeMont truck scale, Weigh-Tronix designers recognized that their strength was building truck scales with long service life. Now they need to ask, “How do we build the same quality into a scale for general use? How do we provide the product that gives long years of service without over-building? What design choices do we make that will reduce the cost of truck scale ownership?”

BridgeMont preserves the best elements of proven Weigh-Tronix design

BridgeMont installs anywhere. Depending on your state regulations, space requirements and environmental conditions, you can use it as a pit type scale, place it on a concrete slab, or simply set it on concrete piers. The heart of the BridgeMont Steel Truck Scale is the Weight Bar weight sensor. Weigh-Tronix machines Weigh Bars from high quality aircraft alloy steel bar stock. Each Weigh Bar goes through a three-step process of heat treating, quenching and then tempering. The process has two benefits. First, it increases the weight sensor’s resistance to corrosion, and secondly, it enhances the performance of the Weigh Bar, ensuring its high degree of repeatability by minimizing hysteresis. The Weigh Bar has proven to be the most dependable and long lasting electronic weight sensor in the industry.
Structural integrity, the biggest variable in cost of ownership

Weigh-Tronix designers employed a technology called Finite Element Analysis (FEA) to the design of the BridgeMont to substantially reduce the cost of the standard truck scale without sacrificing structural integrity.

The FEA technology permitted Weigh-Tronix engineers to create proposed designs. They measured critical stress factors on virtually every component of the scale.

As a result, they developed a new configuration for their proven sandwich steel deck that reduced the weight of the deck but maintained the strength. Their test also reaffirmed the choice of sandwich steel construction. When they tested several designs that eliminate the broom plate, they found that the bottom plate serves as a critical load stabilizer. Designs tested without bottom plates were subject to high fatigue stresses and premature failure when improperly loaded. The second value the bottom plate adds to the BridgeMont is that is allows for a 100% seal weld of the deck structure. This lengthens the life of the scale, protecting it from exposure to moisture and early corrosion.

Simplified Installation cuts cost

Another significant choice that Weigh-Tronix designers made was to simplify the installation of the BridgeMont.

The traditional truck scale installation uses grout plates as bases for the stands that hold the load cells. Grout plates require precise positioning and must be perfectly level to ensure that all load cells are level. Anchor bolts, positioned in the foundation to tight tolerances, secure each grout plate.

In contrast, the BridgeMont positions its Weigh Bars in the deck sections instead of on stands which need to be perfectly level. It has no need for grout plates.

Installers simply drill and insert anchor bolts at the time of installation. This saves hours of highly skilled precision foundation preparation.

BridgeMont’s 20- and 23-foot deck sections are longer than the industry standard. Therefore, the BridgeMont truck scale will often have one less deck section that a competitive scale of the same length. This results in a three-time savings. One less deck section saves the cost of load cells, cable and junction boxes. One less deck section speeds the installation process and simplifies calibration. One less deck eliminates one pier, lowering the cost of the foundation.

In addition, each deck section arrives with Weigh Bars already mounted in the deck. The cables are hard wired to the Weigh Bars (no connectors to corrode or fail from dampness). Protective conduits for the wiring and junction boxes are already in place.

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