UNSPSC 41103323: Open channel acoustic flowmeter

Equipment that is used for hydraulic experiment by using the artificial waterway. It is the device used to measure the flow velocity, flow velocity distribution, river bed change, flow rate and others at the open channel with water flowing.

UNSPSC 41103323 Open channel acoustic flowmeter is a Commodity code used by state and local governments to procure flow measurement and monitoring equipment for water, wastewater, and environmental monitoring applications. Recent solicitations show water and wastewater utilities purchasing ultrasonic level sensors, clamp-on flow meters, gas flow calibrators, and related instrumentation to measure, verify, and control process flows at treatment facilities and lift stations. The City of Tampa procured Emerson-Flexim clamp-on flow measuring devices for the David L. Tippin Water Treatment Facility; Collier County, Florida sourced Siemens ultrasonic level controllers and flow meters for SCADA integration at water and wastewater facilities; and the Texas Commission on Environmental Quality (TCEQ) Air Monitoring Division procured Mesa Metrology gas flow calibrators for EPA-compliant atmospheric monitoring. Issuing bodies include municipal water and wastewater utilities, county environmental management agencies, and state environmental departments. Water production and treatment divisions drive most demand, with procurement officers typically issuing intent-to-single-source notices for proprietary equipment already integrated into existing SCADA systems, or competitive IFBs and RFPs when replacing or expanding monitoring capability.

Activity concentrates in Florida and Texas, with additional procurement from California, Wisconsin, and Arizona water utilities. Representative recent opportunities include the City of Tampa's sole-source procurement (ISS 26X01679, August 26, 2026 objection deadline) for Emerson-Flexim clamp-on flow meters at an estimated 12-month cost of $30,000; Collier County's notice of intent to single source Gilson Engineering Sales for Siemens process instrumentation (PUR17875, October 1, 2026 challenge period); the City of Phoenix Water Services Department's IFB for atmospheric monitoring instruments with fixed installations at lift stations and treatment basins (IFB-27-0435, September 4, 2026); and the TCEQ Air Monitoring Division's RFB for gas flow calibrators (RFB 582-26-15780, July 7, 2026). Eastern Municipal Water District (Riverside County, California) issued RFP3856 for meter verification, calibration, certification, and repair services due July 15, 2026. Sole-source justifications typically rest on manufacturer compatibility with existing SCADA and control systems, regulatory compliance, and the cost of system redesign versus proprietary component procurement.