The Thel-Mar Volumetric Weir is the most practical and economical calibrated measuring device used to determine infiltration in newly installed sewer lines, as well as substantial flows in existing pipes. Our weirs offer the advantage of a 90-degree v-notch for measuring small infiltration flow where accuracy is paramount. The rectangular portion of our compound weir measures larger volume flow rates. Our faceplates are laser engraved and cut for easy viewing.
The Thel-Mar Volumetric Weir offers rugged construction and non-corroding materials that makes our weir extremely reliable. Our weirs are suited for a variety of different applications. Multiple municipalities, the USDA, the USGS, universities, and commercial and residential developers utilize our weirs. Lehigh University tested the Thel-mar Weir measurements to have a reasonable accuracy depending on environmental conditions and flow situations in which the products are placed.
Our weirs can be manufactured with an optional bubbler tube, and are produced with a 1/8" O.D. stainless steel tube attached to the right side of the adjustable ring to accommodate data logging equipment for continuous remote monitoring.
Our Volumetric Weirs come in 6", 8", 10", 12", 14", 15", and 16" sizes, both as a standard weir or with the bubbler tube.
Purchase directly from us @
Phone: 419-326-5917
Email: info@thel-mar.com
Or use one of our valued distributors:
Corporate and Government
Universities