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A blog discussing sensors and instrumentation. New products, new technologies, and interesting applications. Types of sensors and instruments discussed include: Analyzers, Color Sensors, Displacement Sensors, Flow Sensors, Industrial Weighing, Instrumentation (Data Acquisition), Load Cells & Instrument Hardware. Machine Controls, Pressure Gauges, Pressure Sensors, Sanitary Sensors, Strain Gages, and Temperature Sensors. Courtesy of AP Corp.
The Occupational Safety and Health Administration (OSHA) is an agency of the United States Department of Labor, and it is responsible for ensuring that employers provide safe and healthful working conditions for employees in the U.S. One of the ways OSHA accomplishes its mission is by setting and enforcing standards.
OSHA standard 29 CFR 1910.95 relates explicitly to occupational noise exposure. This standard protects workers from excessive noise levels that can lead to hearing loss or other health problems.
Sound level indicators (often called sound level meters or SLMs) and dosimeters are two primary instruments used to measure occupational noise levels. Both devices help employers assess noise exposure and ensure compliance with OSHA's 1910.95 standard on occupational noise exposure.
Compliance with OSHA 1910.95:
In summary, while sound level meters provide immediate spot readings of noise levels, dosimeters assess an individual's cumulative exposure over time. Both tools are essential for comprehensively evaluating workplace noise and ensuring compliance with occupational noise standards.
When external loads are applied, stress analysis assesses the internal forces and stresses acting on a material or structure. Strain gages, widely used in this process, measure the deformation (or strain) that occurs when a material experiences stress. The following provides a detailed explanation of how to accomplish stress analysis using strain gages:
In summary, stress analysis using strain gages requires selecting, installing, calibrating, applying external loads, collecting data, and analyzing the stress-strain data to understand the material's response to the applied loads.
Feed screws, also known as extruder screws, play a crucial role in the melt stream process of the plastics industry. The melt stream process transforms raw plastic materials into a continuous, homogenized, and viscous molten mass, which can be further shaped and processed into various products like films, sheets, pipes, profiles, and more. The feed screw is an essential component of the extruder machine, the primary equipment used in the melt stream process.
The role of the feed screw in the melt stream process is explained in detail by understanding its different sections and their functions:
Feed screws play a vital role in the overall efficiency and quality of the melt stream process. The design of the screw and its various geometries can significantly affect the processing conditions, output rate, and final product quality. Different types of feed screws are available, tailored to the specific requirements of the plastic materials and end products, such as single-screw, twin-screw, and multi-screw extruders. These screws may also be classified based on their compression ratio, screw profile, and mixing elements.