Miniature SM1 String Pot

June 15, 2011
Fits into just about any tight space, mounts in any direction and provides linear sensing up to 25 inches of stroke are just a few of the features of this new miniature off-the-shelf string sensor from Celesco.  At just over one inch in diameter, this brand-new and in-stock string string sensor delivers a precise voltage divider output signal that is linearly proportional to the travel of the spring-loaded measuring cable.  Following on the heals of their hugely popular SP Series, the new miniature SM1 string sensor is the perfect solution for the single piece user and OEM alike.  With full stroke measurement range options from 2.5 inches to 25 inches, this sensor is built with a rugged polycarbonate enclosure, a high-cycle conductive plastic potentiometer and withstands measuring cable “free-release” up to 15 inches. With an excellent track record providing custom sensors to the OEM market, Celesco offers the SM1 as the perfect economical solution to meet customer specific demands.  Celesco can quickly design, build and manufacture an affordably priced customized SM1 to meet just about any customer’s needs. With such an ultra, compact design, the SM1 ensures that confined spaces are never a challenge. At just over one inch in diameter, this brand-new and in-stock string pot delivers a precise voltage divider output signal that is linearly proportional to the travel of the spring-loaded measuring cable. “The SM1 has the same level of quality that our customers have come to expect with the SP1, just in a smaller package,” said Celesco General Manager Jim Bishop. With a weight of only three ounces, you just can’t get a more durable and reliable string pot at that size.” As one of the world’s leading designers and manufacturers of linear and rotary measurement transducers, Celesco has continued to upgrade the quality of its products across all models. “With accuracy down to .25 percent and resolution specified to essentially infinite, this is the perfect low-cost solution for OEMs and single piece users,” Bishop said. The SM1 comes in four different models: The SM1-2 with a full stroke range of 2.5 inches and a cycle life of 2.5 million cycles. The SM1-7 has a range of 7.5 inches and an accuracy of .25 percent at 500,000 cycles. The SM1-12 has a range of 12 inches and an accuracy of .25 percent at 500,000 cycles. The SM1-25 has a full stroke range of 25 inches and also offers an accuracy of .25 percent. Celesco’s SM1 series miniature string pot has an operating temperature of 0° to 160°F and has a recommended maximum input voltage is 30 VDC. Applications for this sensor range from automation and control to structural testing and everything else in between.
  •  Free-release tolerant to 15 inches
  • 15 g maximum acceleration
  • .05% FS repeatability