About Load Cell for On-Board Weighing Systems
Transportation, agriculture, and logistics depend on knowing how much weight a vehicle is carrying. It may seem simple, but it has a significant impact.
Overloaded vehicles wear out more quickly, violating safety regulations. On-board weighing systems help address this problem by providing real-time weight checks during loading. These systems use load cells to measure force directly from the vehicle’s structure. In this case, the most common and reliable type is the double shear beam load cell. These cells maintain their accuracy under stress and continue to function even when the load is not perfectly distributed. This reliability makes a difference in the field.
How Do Double Shear Beam Load Cells Work?
Double shear beam load cells receive stress from the ends of a sturdy metal beam. Its center is fixed to the frame or chassis, while the ends can flex slightly. When heavy loads are placed on it during operation, the beam bends slightly. This simple movement is enough to activate extensometers mounted on the beam’s surface. The extensometers measure the extent of the beam’s expansion. An electrical signal is then sent to inform the system of the load’s weight. Since both ends absorb the force, the load is distributed evenly. For this reason, this shape is ideal for larger machines and vehicle weighing systems. It maintains accuracy even with small weight changes and does not wear out quickly.
This simple configuration of the double shear beam load cell operating principle explains the reliability of these devices. Their design balances strength and sensitivity. They are robust and intelligent, and are used in locations where weight accuracy is critical.
Sensomatic Load Cell for On-Board Weighing Systems
Sensomatic offers load cells that work directly with on-board weighing systems, providing real-time load data directly from the vehicle. These double shear beam cells, such as the heavy-duty DESB-TPR model, are known for their ability to withstand moving loads and harsh operating conditions. They are typically mounted on axles, suspension systems, or mounting points, where they record the exact weight of the load.
The weight reading is displayed on a screen inside the driver’s cab. This way, the driver knows exactly what they are carrying at all times. The system can also transmit data wirelessly via Bluetooth, GSM, or CAN bus, which is beneficial for fleet owners or distribution centers.
Waste collection trucks often use this configuration. When containers are full, load cells measure the amount of waste collected. This simplifies the billing process and identifies areas that fill up most quickly. These load cells are available in stainless steel or alloy steel, depending on the workload and weather conditions.
Benefits of OBW Systems with Load Cells
Integrated weighing systems with load cells make a significant difference in critical areas: on the road, at loading points, and during long journeys. These systems not only weigh the load, but also help avoid common errors that waste time, fuel, and safety.
Benefits:
- Increased Productivity
Drivers spend less time checking weights or returning due to overloading. The system displays real-time data, allowing them to complete more tasks per day.
- Reduced Fuel Consumption
Trucks that are neither overloaded nor underloaded move more efficiently. This reduces fuel waste, especially on long routes.
- Better Vehicle Maintenance
A balanced load means less wear on tires, suspension, and brakes. This saves money on spare parts and downtime.
- Driver Safety
Drivers don’t need to guess how much weight they’re carrying. Balanced loads reduce stress on the vehicle and the risk of accidents.
Key Requirements for Load Cells in On-Board Weighing Systems
The load cell used in an on-board weighing system measures weight, but that’s not its only function. It’s also part of a vehicle that travels on rough roads, experiences temperature fluctuations, and undergoes heavy daily use. These points cover important aspects if you’re looking for a reliable, long-lasting vehicle. Performance
High Accuracy and Repeatability
Weight readings must remain accurate regardless of how often the system is used. Its performance should remain the same day one, year after year.
Although the initial cost of premium devices is higher, keep it simple:
Consult the handbook and do frequent checks.
All things considered, onboard weighing is easy and accurate with a carefully selected load cell. Installing and maintaining it correctly now will save you problems later.