What Are the Different Types of Metrology Tools? If you have an interest in metrology, you may want to read this article. This article will give you an overview of each type of metrology tool, including the Multi-sensor platform, Surface Plates, Interferometers, Laser levels, and more. Once you know what each of these tools does, you can start evaluating which one will work best for you. After reading this article, you should be able to choose a metrology tool that will help you measure the surface of a product, as well as the accuracy and repeatability.
Multi-sensor platform
With its multiple sensors, a multi-sensor platform is an ideal solution for advanced packaging and MEMS applications. A multi-sensor platform offers the flexibility to combine global and local measurements for a solution to nearly any metrology challenge. The ability to measure film thickness and step height in one measurement is a standard part of everyday life, but hybrid metrology is a truly unique capability. These devices combine the best of both worlds.
Unlike conventional tools, multi-sensor metrology technology automatically deploys the right tools for each task. By combining industry-leading lasers and video optics, multi-sensor metrology systems are capable of measuring surfaces and complex dimensional forms. With their ability to measure both macro and micro dimensions, multi-sensor metrology systems can be used in both QC labs and shop floors. Ultimately, the multi-sensor platforms can be customized to suit specific manufacturing requirements.
Surface Plates
Surface plates are used for gauging flatness and identifying warpage in parts. Typically, surface plates are calibrated and positioned at a “zero” point on the object to be measured. This allows the height gage to be zeroed anywhere on the object. They can also be used in conjunction with a gage block to measure and verify small parts. This article describes the various types of surface plates and how they are used in metrology tools.
To maintain the accuracy of the plate, it must be calibrated periodically. Frequent use of metrology tools causes unevenness on the plate, which affects accuracy. In addition, tools may drop on the plate, creating swarf and debris. These resulting erroneous readings can also cause the plate to become inaccurate. In such a case, the plate can be resurfaced. This process requires specialised equipment.
Interferometers
Interferometers are tools that can measure the power and irregularity of optical systems. They can be used for measuring the properties of optical systems, including surface form, as well as transmitted wavefront quality. They incorporate both the reference surface and the beamsplitter into a single device. Lasers have narrow linewidth and high coherence. The resulting fringes can be seen with very high resolution at relatively large path length differences.
An interferometer compares the surface structure and position of two objects. It has basic components: a light source and a beamsplitter. The reference beam is guided to the surface to be measured. The recombined beams have different amplitude and phase. When the beams are out of phase, constructive interference occurs. The measurement beam is then guided to the sample surface and the reference beam is reflected by the reference mirror and CCD image sensor.
Laser levels
Laser levels as metrology tools are becoming more important in the construction and electrical industries, thanks to their versatility and affordability. They can help you align raceways and conduit, and save you up to half the time of traditional methods. Fluke offers two laser distance meters, with 260 and 330-foot ranges. Rotary lasers feature advanced features and a choice of green or red lasers. According to Tony Topf, senior product manager for construction solutions at DeWalt, these levels are perfect for professionals who need to check for accurate alignment when they are working on large projects.
Rotary laser levels are durable and versatile tools that can be used for a variety of tasks, from mapping out layout lines in a mobile home to measuring the height of tree stands. Their accuracy is unparalleled over long distances, and they’re also great for measuring the height of drop ceilings. They can also be used to measure the distance of pipes and walls, as well as measure the grade of a slope. You can also use them to create floor plans, level hot tubs, and re-define pool dimensions.
Atomic Force Microscope
The Atomic Force Microscope (AFM) is a noncontact, nondestructive inspection tool. Its conductive tip measures the surface potential of a sample and maps the parameters of that surface. The smallest AFM tip reaches a radii of about 5 micrometers. High-resolution AFMs can achieve true atomic resolution. They are comparable in resolution to TEM and scanning tunneling microscopy (STM).
The atomic force microscope is used in a variety of applications. One such application is in metallurgy. It measures surface topography and mechanical properties. The tip’s shape can help identify the extent of surface scratching. It can also expose glass to study a sample’s structure. In addition, the pinPoint (TM) nanomechanical mode allows measurements of both surface topography and adhesion.
