Showing posts with label New England. Show all posts
Showing posts with label New England. Show all posts

What are Plastics Industry Feed Screws and How Are They Made?


Feed screw maintenance
Feed screw maintenance.
Plastics industry feed screws, or feed screw augers, are mechanisms that use rotating helical screw blades to move plastics pellets through the barrel of molding and extrusion equipment. The feed screw transports the plastic as it changes phase from solid to viscous liquid through friction, shear, and conductive heat transfer. 

A typical feed screw has three zones. Plastic pellets enters the screw feed section where the pellets are compacted and conveyed. Next is the transition (or compression) section, where the plastic is compressed, conveyed, and melted.  Finally, the liquid plastic moves to the metering section where it is precisely controlled at optimum temperature and viscosity.

For more information about feed screws, or any part of the injection molding process, contact:
508-351-6200

Injection molding
Diagram of injection molding process.



Strain Gage Sensors with Pre-attached Lead Wires


The following is from the podcast "StrainBlog" (https://www.strainblog.com) about exciting new technology for adding lead wires to strain gages. The discussion between hosts Jim and Darryl is about the development and virtues of the new Advanced Sensors Technology C4A and C5K strain gages.

AP Corp.
508-351-6200

For Strain Gage Users Who Hate to Solder - New Strain Gage Sensors with Pre-attached Leads

Strain Gage Sensors with Pre-attached Leads

The following is the transcript from the podcast "StrainBlog" (https://www.strainblog.com) about exciting new technology for adding lead wires to strain gages. The discussion between hosts Jim and Darryl is about the development and virtues of the new Advanced Sensors Technology C4A and C5K strain gages.


Jim - The topic that keeps coming up repetitively is gauges with pre-attached lead wires. I got a myriad of customers looking for a variety of different solutions. Everything from printed circuit boards, where we've got to route very fine lead wires from gauges to data acquisition systems;  civil engineering projects where they're looking for low cost, long cable lengths, sometimes two wires, sometimes three wire. There seem to be more and more demands - what are we doing to meet this variety of applications that we sort of lump into this category of pre-leaded strain gages?

Darryl - Jim, that's a fantastic question. So, we've got this new line of strain gages we call C4A's [from Micro-Measurements], and they they're available in a bunch of different sizes. We go down right now to about a 0.062" gage length, and we go up to a 0.235" gage length. We put a two conductor and a three conductor wire on it on. We can vary the length of that, and these gages are actually made using our new technology from the Advanced Sensors Group, where we can really push the limits now both on the size of the strain gage as well as the resistance. We're really excited about these. We're targeting different markets, including structural testing, as well as printed circuit board testing. There's also another one that we've recently introduced, which is a C5K version, and that's a three element rosette, a planar style that's in a 350 Ohm resistance, and with this new technology, we can make this gauge smaller, more compact than ever before, and it really makes it ideal for printed circuit board testing, where you're trying to get up close to the components that's on that board, so that you could get very accurate, localized strain gage measurements.

Jim - Now, I think I've seen one of the C5K gages that you refer to, and that's a remarkably small planar gage. If I'm correct, the footprint of that planar gage is even smaller than the smallest stacked rosette that we've ever made. Is that true?

Darryl - Yeah, you're absolutely right. So, one of the smallest stacked rosettes we've had is the 031WW as well as the G1350, and this new planar gage will actually fit within the footprint of both of those gages. The active gauge length is less than 0.020 of an inch, and we also pre-attach three conductor, 36 gauge wire to each one of those grids, so basically, you have a planar rosette with 10 feet of three conductor Teflon insulated wire that's 36 gauge in size.

Jim - Well that seems to solve a lot of problems. With stacked rosette that you have a lot of self heating issues, trying to dissipate the heat from those three layers, down to a single plane and dissipate that. With the planar rosette, all gauges air on the single plane - you don't have a proximity issue with height of sight from the neutral axis,  you don't have that heat build up, and if I remember correctly, these are actually 350 Ohm gages, not 120.

Darryl - That's absolutely right. You hit the nail on the head. These are 350 Ohm gages, so you don't have to be as concerned about self heating effects, because of the higher resistance, and also because it's a planar, and like you mentioned, there's not as much of a superposition error because that's a planar gage and not a stack one. So there should be less correction due to bending and also less concern related to excitation and self-heating of the strain gage. We're really excited about adding this to our portfolio of strain gauges that customers can use now to do this printed circuit board type testing.

Jim - And that coupled with the fine wires solves a wire routing issue, getting those leads out from between components out of the package to the data acquisition system. Sounds like a perfect solution to me.

Darryl - Yeah, we're really excited about.

For more information on strain gage sensors with pre-attached leads in New England or Upstate New York, contact AP Corp. by calling (508) 351-6200 or visit their website at https://a-pcorp.com.

White Paper: Learn Why Eddy-Current Sensors Are Now Replacing Inductive Sensors and Switches

Eddy-Current Sensor White Paper
Recent advances in eddy-current sensor design, integration and packaging, as well as overall cost reduction, have made these sensors a much more attractive option than inductive sensors. This is especially true where high linearity, high-speed measurements and high resolution are critical requirements.

This white paper, courtesy of Micro Epsilon and AP Corp, explains why.


AP Corp
(508) 351-6200

An Introduction to Sentek Dynamics Vibration Testing Systems

Sentek Dynamics Vibration Testing Systems
Download the full paper here.
Whether you are shopping for your first shaker system, or just educating yourself on vibration and shaker technology in general, you'll find this white paper on Sentek Dynamics shakers helpful. Sentek Dynamics supplies vibration test equipment to reproduce real-world environmental conditions for global manufacturers and offers technology capable of reproducing a wide-variety of test requirements - vibration (sine, random, shock, SoR, RoR, RSTD and others), data recording and dynamic signal analysis.

Although this paper focusses on Sentek Dynamics products, it provides excellent details about shaker technology in general.


Check Out the Current AP Corp. Line Sheet

AP Corp. represents the top manufactures of industrial sensors and instrumentation. Product categories include Analyzers, Color Sensors, Displacement Sensors, Flow Sensors, Instrumentation (Data Acquisition), Load Cells & Instrument Hardware, Machine Controls, Pressure Gauges, Pressure Sensors, Sanitary Sensors, Sound Sensors, Strain Gages, Temperature Sensors, and Vibration Sensors. As one of New England's and New York's premier Manufacturer's, AP Corp. will assist you in selecting the perfect sensor for your application.

Check out the AP line sheet by reviewing the embedded document below, or you can download a PDF line sheet from this page on the AP Corp. web site.

AP Corp.
https://a-pcorp.com
(508) 351-6200

Dynisco ViscoSensor for Online Rheological Measurement

ViscoSensor
Dynisco ViscoSensor for the thermoplastics resin industry.
Specifically suited for all “return to process” looking to improve quality of their process and product by ensuring the rheological properties continuously in their production line.

Designed for the thermoplastics resin market, the Dynisco ViscoSensor provides the continuous measurement of melt flow rate, or apparent or intrinsic viscosity, directly on the manufacturing process.

To learn more about online rheological measurement with the Dynisco ViscoSensor visit this page on the AP Corp website.

Andruss-Peskin (AP) Corporation
(508) 351-6200
https://a-pcorp.com

Andruss-Peskin Introduction Video

Here's a short introduction video for those of you who don't yet know AP Corp. Thanks for watching.

Welcome to the Sensor and Instrumentation Blog of New England

Thanks for visiting! It's our intention to feature products, technologies, and concepts of interest to the sensor and instrumentation  community. Subjects will include all types of industrial sensors and instrumentation, basics of operation, and new exciting products.

Among the products and applications we will feature are: 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.

We hope you enjoy and visit back frequently!