Wastewater Flow Meter Calibration Services

2026-11-03

Currently , the City of Gastonia is responsible for the maintenance of 16 wastewater flow meters in the collection system . All the primary metering devices consist of flumes ( i . e . Parshall , PalmerBowlus and Trapezoidal ) with ultrasonic sensors . A wide range of secondary measuring devices are also used across the 16 locations and include control panels manufactured by ISCO and Hydroranger . Several of these locations require the use of an off - road vehicle and walking over rough terrain to gain access to the metering point . In addition to challenges associated with accessibility ( e . g . traversing small streams , muddy / wet conditions , steep hills containing loose gravel , etc .), many of the metering points are located in manholes and are confined spaces , however measurement of the wastewater stream may be obtained by use of a telescopic pole and metric device . It will not be possible to cut off flow to most , if not all , of the 16 locations , therefore flow height must be measured directly in the waste stream . Details of the calibration event must be recorded on a City approved calibration field sheet and submitted to the City within two weeks of the calibration event . The Vendor must notify the City at least two weeks in advance of each calibration event . In addition , City staff may be onsite for each of the calibration events , therefore calibration events must be coordinated with the City .

North Carolina

2026-05-08