Sentry engineers, manufacturers and services components for collecting representative samples of steam, water, gas, liquid, slurry and bulk solids. This enables analystical and operational professionals to gain samples safely and simply, and with repeatable results.

For more than 85 years, power generation and process industries worldwide have relied on our sampling products and our knowledge base to help them meet their productivity goals.

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 the customers we serve.

Sentry has been very successful and continues to grow, with 3 acquisitions over the past year...this is great for Sentry and Southeast Wisconsin!

July 2010 - Sentry Acquires AquatiPro, a multi-vendor service organization that maintains and supports all brands of water quality instrumentation, analyzers and sampling equipment.

November 2010 - Sentry Acquires Zeck Systems, a company that provides odorant injection instrumentation to accurately dose natural gas streams throughout various phases of production, transmission and distribution.

February 2011 - Sentry Acquires Waters Equipment, a former competitor engaged in the design and construction of steam and water sampling systems, and considered a pioneer in the field.