Aerial Lift Overload Control Archives

Proof loading is a critical test that is performed on sensors or load cells to verify their performance and accuracy under extreme conditions. Engineers may need to request proof loading verification to ensure that the sensors or other measuring devices being used in a particular application are accurate, reliable, and safe for use.

Upon request, Interface provides proof loading at the build phase of engineered-to-order load cells, as well as load pins, load shackles and tension links. By simple definition, proof loading is a safe overload rating for a sensor.

Load proofing is a special test that guarantees the sensor performs at maximum capacity before it’s released to the customer. If a manufacturer does proof loading, it will be documented in the sensors specifications that are shipped with the product. It is commonly requested for sensors that are used in lifting applications.

Additionally, quality engineers and testing professionals may request proof loading as part of quality control or compliance requirements. By ensuring that sensors and load cells are tested and validated before use, companies can ensure that they meet regulatory standards and maintain a high level of quality in their products and services.

The Proof Loading Process

By requesting proof loading, sensor users can verify the accuracy and reliability of sensors and load cells and ensure that they are functioning correctly and within their specified limits. Proof loading can also identify any issues or problems with sensors or load cells before they are put into service, allowing for repairs or replacements to be made if necessary.

Proof loading for sensors is a process of subjecting a sensor to a higher-than-normal load or stress to confirm that it can withstand that load or stress without any permanent damage or deviation from its calibration. The purpose of proof loading is to validate the accuracy and reliability of the sensor under extreme conditions, ensuring that it will perform correctly when it is in service.

During proof loading, the sensor is exposed to a controlled overload, typically between 150% to 200% of its maximum rated capacity. The sensor’s response to the load is monitored, and the output is compared to its expected behavior. If the sensor performs within acceptable limits and returns to its pre-loaded state after the load is removed, it is considered to have passed the proof load test.

When should you request proof loading for a load cell?

Proof loading for a load cell should be requested when there is a need to verify its calibration and ensure its accuracy and reliability under extreme conditions. This is particularly important when the load cell is used in safety-critical applications, such as in crane and hoist systems, industrial weighing and process control systems, and structural testing applications.

Proof loading is commonly used for sensors that are used in safety-critical applications, such as load cells used in cranes and hoists, pressure transducers used in oil and gas pipelines, and temperature sensors used in furnace applications. By performing proof loading tests, manufacturers and end-users can have greater confidence in the performance and reliability of their sensors, which can improve overall safety and efficiency.

In general, there are several situations where it is advisable to request proof loading for a load cell:

Before critical applications: In safety-critical applications, such as those involving lifting, handling, and transportation of heavy loads, a proof load test should be performed before the load cell is put into service to ensure that it can handle the required load without any issues.
After installation: It is recommended to perform a proof load test on the load cell immediately after installation to ensure that it is functioning correctly and within its specified limits.
After repair or maintenance: If the load cell has undergone repair or maintenance, a proof load test can be used to verify that it is still performing accurately and within its specifications.
After an extended period of non-use: If the load cell has not been used for an extended period, it may be necessary to perform a proof load test to ensure that it is still functioning correctly.

It is important to note that proof loading should only be performed by qualified and trained personnel using the appropriate equipment and procedures. This will ensure that the load cell is not damaged during the testing process and that it continues to perform accurately and reliably after the test is completed.

Proof loading is particularly important in safety-critical applications such as in the construction industry, transportation industry, and other industrial applications where lifting and handling heavy loads are involved. In these applications, the accuracy and reliability of sensors and load cells are crucial, as any inaccuracies or deviations from the expected behavior can result in dangerous and costly accidents.

Overall, proof loading is an essential test that engineers may need to request to ensure the safety and reliability of sensors and load cells in various industrial applications.

ADDITIONAL RESOURCES

IoT Lifting Heavy Objects

Cranes and Lifting

Recap of Use Cases for Load Pins Webinar

Tension Links 101

Aircraft Lifting Equipment App Note

Infrastructure projects are growing, as investment continues to climb for projects related to rebuilding, renewing and innovating applications in this sector. These global investments come from public and private organizations as demands to address roads, bridges, water supplies, transportation, energy systems, and broadband requirements for the 21st century grow.

Experts who focus on infrastructure acknowledge these are means for civil existence and prosperity. Interface understands that our role in supporting the design, testing, manufacturing, constructing and maintenance required in infrastructure needs a top supplier of force measurement solutions.

Interface force measurement solutions have and are currently used around the world for infrastructure projects including bridges, generators, dams, waterways, transportation structures, construction projects, cranes and lifting apparatus, and heavy machinery.

Interface supplies durable and accurate sensor technologies used in testing equipment, technology, vehicles, tools and machines used in all types of infrastructure subsectors. We also find our products often designed into structures for regulatory and safety monitoring, whether that be to maintain tunnels or support wind generating farms.

Interface details force measurement products we commonly provide to those working and supporting the infrastructure sector in our Infrastructure Solutions Brochure. You can see some of these products in our Infrastructure Solutions video.

Interface load cells, load pins, instrumentation, multi-axis sensors, and torque transducers are top choices for those engaged in infrastructure projects and testing. Sensors are commonly used in measuring the related hardware used for industry products and structures. The types of infrastructure projects that Interface has supplied measurement solutions for includes transportation systems, communication structures, water and electrical facilities, and numerous inventions that are used to build, support, and maintain them, as outlined in Infrastructure Projects Rely on Interface.

Our expert engineers can help design customizable force measurement solutions for all types of applications that require sensors for OEMs and to be used in the actual structure for continuous measuring and monitoring. We have engineered sensor products used for civil engineering designs and infrastructures used in structural monitoring, vibrational monitoring, load bearing testing, tunnels, bridges, and road construction. The range of projects are broad, so we are highlighting a few below that highlight our capabilities when accuracy, quality and reliability matter in design, testing, construction, and assessing current and limitations for safety requirements.

Hydraulic Jacking System Testing

An equipment manufacturer needed to test their hydraulic jacking system’s ability to lift heavy loads and objects, like a bridge during construction. They wanted to monitor the forces being applied to ensure the hydraulic jack is not only safe to use, but works well enough to avoid any potential structural issues. Interface’s 1200 Standard High Capacity Load Cell can be attached in between the hydraulic jack and a heavy load. The load cell measures the forces of the hydraulic jack as it lifts the load cell located in between the jack and the object. With the 9890 Strain Gage, Load Cell, & mV/V Indicator, the customer is also able to see the results in real-time. Read more here.

Aerial Lift Overload Control

A manufacturing company for aerial lifts wanted to test its self-propelled boom lift to ensure it can operate at heavy capacities when in use, and at different angles. They also wanted to prevent any accidents in case of a lifting overload, for the safety of any working individual who uses it. Interface’s solution was to attach the 3A160 3-Axis Force Load Cell to the bottom of the bucket of the boom lift. The multi-axis sensor provides high accuracy results, which were displayed using the 920i Programmable Weight Indicator and Controller in real time. The manufacturing company tested their aerial boom lifts and determined it was safely operable when maximum capacities has been reached in use. Read more here.

Truck Weighbridge Monitoring

A transportation company needed to record the weight or loads being carried by their vehicles. They would like a wireless weighing bridge that is able to transmit, log, and display the results in real time. Interface suggests installing multiple WTS 1200 LowProfile™ Load Cells under a weighbridge. When a truck drives over it, the load cells will transmit the force results wirelessly to the WTS-BS-4 Industrial Base Station connected to the customer’s PC with provided Log100 software. The WTS-LD2 Wireless Large LED Display can also display the weight inside for the driver to see in real time. The customer was able to measure, log, and graph the different loads their trucks carried wirelessly onto the weighbridge with success, providing for safe passage across transportation ways. Read more here.

Hydropower Turbine Generator Monitoring

A customer wanted to monitor and detect any turbine generator faults in their hydroelectric power plant located on a river. Interface’s solution was to use the T2 Ultra Precision Shaft Style Rotary Torque Transducer and attach it to the turbine generator with Interface’s Shaft Style Torque Transducer Couplings. When water from the river pushes through the penstock to the outflow, it moves the turbine blades, creating electricity through the generator shaft. Torsion measurements can be graphed and logged with the 9850 Torque Transducer and Load Cell Indicator catching any unusual fluctuations and vibrations. Using this solution, the customer was able to monitor, graph, and log the torque measurement results of the turbine generator. Read more here.

Bridge Seismic Force Monitoring

A customer wanted to monitor seismic activity that occurs to a bridge by using force sensors and then continuously monitoring bridge forces before, during and after earthquakes occur. The customer also preferred a wireless solution so they would not need to run long cables on the bridge. Using Interface’s LP Load Pin custom made to fit their needs along Interface’s WTS Wireless Telemetry System for continuous force monitoring the designed solution was able to take place without long cables. The solution allowed the customer to monitor continuous loads, log information to the cloud and review information. Read more here.

Interface’s work with all facets of the infrastructure industry spans far and wide. Interface is a supplier of choice and key partner for providing reliable sensors and instrumentation solutions used in testing and monitoring of both the infrastructure and the equipment used to upgrade and refine it.

ADDITIONAL RESOURCES

Infrastructure Industry Relies on Interface Force Measurement

Infrastructure Projects Rely on Interface

Interface Solutions Designed for Infrastructure Challenges

Monitoring the Seismic Force of a Suspension Bridge