Posts

Ruggedized Test and Measurement Solutions Webinar Recap

/0 Comments/in /by

Interface’s event, Ruggedized Test and Measurement Solutions, details various transducers, instrumentation and accessories that are designed to withstand environmental stresses and harsh conditions.

The types of testing use case that require ruggedized solutions are material testing, high and low temperature environments, structural and fatigue tests, high cycle count tests, any test for products exposure to moisture or humidity, pressure tests, as well as underwater and in-fluid tests. As noted, this applies to every industry, including maritime, aerospace, food packaging, consumer products, construction, medical devices and automotive.

Interface considers ruggedization as force measurement solutions designed and fabricated for use in extreme environments and applications, ability to operate within accuracy specifications while withstanding one or more environmental stresses or harsh conditions.

During this event, Ken Bishop and Elliot Speidell details the top factors when evaluating test and measurement products used in extreme environments, such as exposure to high or low temperatures, depth of submersion, moisture and water concerts, dust, and other harsh conditions. They present key questions to answer when evaluating your testing requirements, as well as top considerations.

These important evaluation subjects and ruggedized product factors are based on years of experience in collaborating with companies around the world. They define use cases and actual examples of Interface load pins, instrumentation, stainless steel load cells, enclosures and accessories used in all types of harsh and even hazardous environments.

Here is a quick preview of all the topics thoroughly discussed during this event.

  • Environmental Stresses and Harsh Condition Categories
  • Standards and Ratings
  • Structural and Material Options
  • Ruggedized Test and Measurement Devices
  • Sealed Products and Enclosures
  • Extreme Temperatures and Cycling
  • Exposure to Moisture and Submersibles
  • Test & Measurement Applications Using Ruggedized Products

The entire online seminar is now available on-demand. Watch it here.

Top Selling Interface Ruggedized Products

These types of products follow strict certification standards and ratings. During the online seminar, Interface product experts detail the standards and ratings related to intrinsically safe products, sometimes referred to as hazardous location use, as well as solutions designed to meet safety, regulatory or compliance requirements.

The standard ensures that an intrinsically safe device is incapable of triggering combustion or igniting any gasses or vapors. The device is safe to use around dust and gas without risking static electricity or heat discharge from the device igniting the surrounding volatile gasses, powders, and liquids.  Explosion proof applies to a device enclosed in a case that can withstand a gas or vapor explosion.  Should there be an explosion, it will be contained within the enclosure.

Interface offers products with different IP ratings, including IP66, IP67 and IP68 applied to different transducers and instrumentation. Ingress protection (IP) ratings, which grade the resistance of an enclosure against the intrusion of dust or liquids ingress protection (IP) ratings, which grade the resistance of an enclosure against the intrusion of dust or liquids.

  • IP65 – Dust-tight, protected against water jets
  • IP66 – Dust-tight, protected against powerful water jets
  • IP67 – Dust-tight, protected against the effects of temporary submersion in water
  • IP68 – Dust-tight, protected against the effects of continuous immersion in water

What is the difference between IP66 and IP68? IP68 enclosures also provide dust-tight performance against solids. However, they are also rated for significantly better defense against water ingress than an IP66 enclosure. An IP68 enclosure can withstand submersion for over 30-minutes at up to a specified water depth.

Interface also has a range of instrumentation products that are NEMA, and IP rated based on the enclosure and housing designs.  These include:

Interface offers standard and customized solutions. Contact our application engineers to discuss your options and how to ensure you have the right product to match the conditions of our test and measurement environment.

Maritime Measurement Solutions for Onshore and Submersible Applications

/0 Comments/in /by

Maritime test and measurement applications are some of the most unique because they require specially designed equipment that can handle the often-harsh environments in testing and during ongoing operational use.

The solutions for the maritime industry require technologies that measure force, torque, and weight under extreme and uncommon conditions. Interface provides products that have been used for withstanding the rigorous requirements of monitoring underwater tension lines, seaborne components and material testing, boat and ship engine testing, equipment durability and safety regulation monitoring, lift capacity measurements, energy extraction equipment, and storm and tsunami monitoring.

We have been a long-time supplier of sensor technologies and instrumentation that are applied in building and maintaining boats, yachts, and other water vessels of all sizes. Our force measurement solutions are used for waterborne vessels, maintenance, safety equipment, and offshore products. You can learn more in our maritime case study here.

Interface offers a wide variety of submersible and wireless load cells, DAQ and instrumentation products, and rugged load shackles, load pins and tension links. Maritime manufacturers and field users rely on these quality products as they are designed for test and measurement requirements onshore, near-shore, and completely undersea.

Interface Maritime Capabilities and Solutions:

  • Stainless steel and rugged load cell designs for different temperatures and climates
  • Environmentally sealed products used in harsh environments
  • Wireless telemetry system components
  • Custom solutions based on safety and regulatory specifications
  • OEM engineered products for submersible use cases
  • Bluetooth and Wireless data acquisition and instrumentation for safety monitoring
  • Load pins and load shackles for continuous hoist and lifting applications

Included below are a few examples of applications our products are used for testing, force measurement, performance monitoring, regulatory and equipment maintenance:

  • Weight and tension monitor
  • Motor and engine testing
  • Submersible equipment tests
  • Commercial fishing wire rope testing
  • Hydrofoil testing in wave tank
  • Crane block safety check
  • Mooring tension testing and quick release hooks (QRH)
  • Crane capacity verification and force regulation
  • WTS yacht rigging inspection
  • Defense submergible tests

Interface understands that the maritime industry has high standards and requirements force and torque testing, measurement, and weighing.  Accuracy in testing is absolutely critical. Interface’s quality measurement solutions provide accurate data needed for all types of maritime equipment used to ensure safety and success. Our Interface expert engineers can help you design customizable solutions for all types of applications using our products designed for offshore, underwater, and splash zone locations.

This is just a preview of our capabilities in the maritime industry. To learn more, check out our maritime solutions. We also recently developed a new maritime solutions brochure, which provides in-depth information on our submersible product offerings, as well as other ruggedized products for maritime applications.

Maritime-Brochure

Understanding Load Cell Temperature Compensation

/0 Comments/in /by

The performance and accuracy of a load cell is affected by many different factors. When considering what load cell will work best for your force measurement requirements, it is important to understand how the impact of the environment, in particular the temperature impact on output.

An important consideration when selecting a load cell is to understand the potential temperature effect on output. This is defined as the change in output due to a change in ambient temperature. Output is defined as the algebraic difference between the load cell signal at applied load and the load cell signal at no load. You can find more detailed information in our Technical Library.

Temperature affects both zero balance and signal output. Errors can be either positive or negative. To compensate for this, we use certain materials that are better suited for hot or cold environments. For instance, aluminum is a very popular load cell material for higher temperatures because it has the highest thermal conductivity.

In addition to selecting the right material, Interface also develops its own proprietary strain gages, which allows us to cancel out signal output errors created by high or low temperatures.

In strain gage-based load cells, the effect is primarily due to the temperature coefficient of modules of elasticity of the force bearing metal. It is common in the industry to compensate for this effect by adding temperature sensitive resistors external to the strain gage bridge which drop the excitation voltage reaching the bridge. This has the disadvantages of adding thermal time constants to the transducer characteristic and of decreasing the output by 10%.

Our load cells are temperature compensated for zero balance. By compensating for zero balance, we can flatten the curve in the relationship between temperature and zero balance. An uncompensated load cell has a much more severe curve, which ultimately affects accuracy and performance.

Interface offers thousands of load cell designs, standard use and for hazardous environments. For instance, rocket engine tests subject our load cells to extremely high temperatures. For use in various maritime industry projects, they can be used in very cold coastlines and even submerged in cold water. No matter where you are, environment influences the load cells performance.

If you are concerned about temperature, Interface provides specifications for every load cell we manufacture. The Interface specification datasheet, as see referenced here, is available for download by product. It always includes all the necessary data required to understand the load cell’s ability to perform at the highest-level including compensation range, operating range, effect on zero balance and effect on span.

One thing that is also unique about our products is that while most competitors only compensate for hot temperatures (60 to 160 degrees Fahrenheit), Interface covers both hot and cold thermal compensation from 15 to 115 degrees Fahrenheit, including adjust and verify cycles.

Be sure to tune into Load Cell Basics, where Keith Skidmore discusses temperature compensation.  He notes during this informative presentation that if the temperature is changing during a test that can affect the zero and the output of the load cell. How much effect depends how much temperature is changing and how well the load cell is compensated against the errors, which can be either positive or negative. Good news is they are repeatable from test to test so if you have large temperature swings you can characterize the system and then subtract out the shift if you know the temperature effect on zero.

Interface Application Engineers are available to answer questions regarding the effect of temperature on force measurement data, or the different ways we can help design a solution to compensate for your environment.

Interface Leads Innovation in Oil and Gas Force Measurement

/0 Comments/in /by

The oil and gas industry is among the most dangerous and expensive industries in the world. There’s also the inherent risk of ecological harm that can be caused by faulty machinery. Because Interface is able to address these challenges, the company’s products have become the heavy favorite among oil and gas companies.

Interface is recognized by oil and gas companies for product reliability, accuracy, and innovative design.

For several years, the oil and gas industry has used “wet” load cells to monitor forces on their downhole load strings. These downhole load strings are equipped with a variety of sensors, and they travel down thousands of feet during exploratory drilling operations. These load cells provide data to the user that measures the forces on the load string to ensure it doesn’t break due to forces greater than th[user_id]e string has been designed to. When one of these strings breaks, it leaves up to a million dollars’ worth of equipment trapped underground until it can be fished out using expensive recovery techniques.

The problem with wet load cells is that they don’t hold up for extended use in wells that extend several thousand feet underground where there are extreme pressures and temperatures in a caustic environment. These wet load cells typically only last about a year or two before they are damaged beyond further use. The turnover rate of these products becomes extremely expensive and can also cause critical inconsistencies in measurements, or the complete loss of measurement feedback.

The reason these wet load cells break down after a year or two is that the sensors on this product are exposed to the harsh underground environment. To address this issue, Interface created a “dry” load cell that protects the sensitive parts with innovative design, reduces the number of sensors required in the customer’s downhole load string, and allows the load cell to last 10 years or more.

“Our dry load cell technology provides Interface’s signature accuracy in a ruggedized package that will stand up to the harsh environments of a deep oil well. These design iterations that allow for longer product lifespans are critical to our customers because of the cost savings and consistency of using a single force measurement solution.” Ken Vining, Chief Engineer at Interface

Interface initially developed this technology as a custom solution to address a customer’s challenge of constantly replacing wet load cells. Based on the positive feedback Interface received, the company has begun development on a standard version of the dry load cell. The standard load cell will be more cost-effective than wet load cells and custom design dry load cells.

For more information on the products that Interface provides for the oil and gas industry, click here.  For details on all Interface solutions, please visit www.interfaceforce.com.

Contributor:  Ken Vining, Chief Engineer at Interface