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Sentry Equipment Corporation

Sentry Equipment manufactures and services components for collecting representative samples of steam, water, gas, liquid, slurry and bulk solids; enabling safe, simple and repeatable samples for process and power generation industries worldwide. Recognised as the standard in sampling equipment, Sentry systems and components have been used by analytical and operational professionals for more than 85 years. As employee owners, we believe in developing products and programs that set the bar higher for our industry, our community and ourselves. This is reflected in the industries and people we serve.

Sampling is the act of capturing product from the process for the purpose of analysis. Major industries served include: Food, mining, cement, pharmaceutical, chemical, oil refining, petrochemical and power generation.

Our 66,500 square foot facility in Oconomowoc, WI operates with ISO-certified processes and state-of-the-art technology to manufacture more than 50 different sampling products, while saving energy and increasing sustainability. We operate in three manufacturing models simultaneously—Made to Stock, Made to Order, and Engineered to Order. And as our systems and components are sold throughout the world, we manufacture to meet national, regional and global standards and requirements (i.e. ASME, NACE, CE, JI, CSA, UL, ATEX, 3A, GOST, CRN, etc.).

Whether it’s powder, pellets, flakes, granules, grain or friable materials (free-flowing or static) Sentry Automatic Bulk Solids Samplers extract non-contaminated, representative samples from chutes, spouts, air-slides, bins, conveyor belts, pneumatic convey lines and vessels, using a variety of techniques: point, strip, cross-cut and conveyor belt extraction. Sentry ISOLOK® and former Gustafson brand automatic samplers are used widely in demanding applications to collect raw and finished product, load-out and custody transfer material. Other Sentry products include: PLC-based controllers for continuous and/or time-regimented sample collection; conveyor belt samplers; special alloys and coatings for wetted materials and demanding applications; high-pressure cleaning systems for railroad tank cars and semi-trailers; sample coolers and heat exchangers; and sampling solutions for water, steam, gases, liquids and slurries. Our website, contains downloadable spec sheets (PDFs) of all our equipment, in addition to application notes and other helpful information.