The Thel-Mar Volumetric Weir is a practical and economical calibrated measuring device used to determine infiltration in newly installed sewer lines, as well as substantial flows in existing pipes. The weirs offer the advantage of a 90-degree v-notch for measuring small infiltration flow where accuracy is paramount. The rectangular portion of the compound weir measures larger volume flow rates. The faceplates are laser engraved and cut for easy viewing.
Contact Van WaltEvaporation pan set for the determination of the evaporation rate of open water.
Read MoreThe PT12 Pressure & Temperature sensor for Water level monitoring. Designed to resist the elements so the PT12 delivers accurate water level (pressure) and temperature readings in rugged environments.
Read MoreThe Flow Stick is a mobile measurement system for discharge measurement in watercourses, such as rivers, streams and canals.
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