Pipette and Pipettor

How do you attach an encoder to a liquid? Encoders usually attach to a part of the system that moves—and in a pump, the part that moves is a liquid! How do you attach an encoder to that? In actual practice, you don't. Every pump has a mechanism that moves a fluid. You attach the encoder to that mechanism. If a motor drives the mechanism, for example, you can mount the encoder to the motor...   Read More »


Published in Blog Posts on Monday, October 21, 2019

SPS 2019 logo

US Digital will be exhibiting in booth 1-624 on November 26 - 28, 2019 at the 30th Annual SPS - Smart Production Solutions Event located at NürnbergMesse, in Nuremberg, Germany. Please contact us to set up an appointment with one of our motion control specialists. Thank you for your continued business and we look forward to seeing you there!   Read More »


Published in Events on Tuesday, October 15, 2019

Inside the E4T Miniature Optical Kit Encoder, shown above, is a very small disk. During production, operators had great difficulty transferring the disks by hand.

When US Digital released the E4T Miniature Optical Kit Encoder it needed to update manufacturing procedures to better handle the miniaturized encoder disks. The company decided to use automation and built the delta robot system above. It speeds up manufacturing and frees staff to spend time on higher-level tasks. New Miniature Encoder Disks Caused Production Difficulties for...   Read More »


Published in Blog Posts on Monday, October 14, 2019

Disk Resolutions

With some optical encoders you can literally see the resolution right on the encoder disk. Look at the disks above and notice how closely the lines are spaced. Encoder resolution is defined as the smallest distance that can be measured or observed. However, it can be used in three different ways within the same motion control system—this can lead to confusion. In this post,...   Read More »


Published in Blog Posts on Monday, October 7, 2019

Figure 1

So far in this blog we've written about encoders that are moved by something else. They're attached to a motor shaft, or a linear actuator, or conveyor belt. Their job is to report their position as they're moved by an external force; other than that, they're just along for the ride. Well, sometimes - the encoder is the ride! Sometimes the encoder moves first, and everything else reacts to...   Read More »


Published in Blog Posts on Monday, September 23, 2019