It’s made of sheet metal, explains Layton Refrigeration Company’s Sid Taylor about the invention (pictured above) he calls a “thermal sensor test vessel” or TSTV. “But I’m not going to tell you everything.”

Taylor has been a commercial/light industrial contractor for years, three decades of which were spent in the dairy industry. Plans for his TSTV developed when the Oregon State Department of Agriculture asked him to design and build an apparatus for testing dairy pasteurization and homogenization.

“It’s basically a self-contained hot fluid circulation device intended to allow testing of precision thermometers and food contact temperature controls,” Taylor explains. “Its primary use is to help in assuring food safety rules compliance.”

The TSTV is rugged, reliable and “fairly light” so it can be easily transported to job sites, Taylor adds. A low temp version performs tests under 200 degrees, and a 300-degree, digital version tests high temperature processes. The temperature control system is made from components often found in HVACR systems.

“Some parts are production made, like the outer shell. Most other components use 10 and 14 gauge stainless steel that I fabbed in my shop in Southern Oregon,” says Taylor. “Oregon liked the first one so well that they now have six of these ‘TSTV’ units. A few other states have discovered these things as well; Nevada, Oklahoma, Missouri, and Kansas now have these units. They all seem very happy with them, helping to keep our food supply wholesome and safe.” Thankfully, Taylor doesn’t take his role in the process lightly. 

Share your job site with SNIPS and see it featured in our next issue. Submit information at