The Hydrological Services Gas Chamber Orifice (GCO1) is designed to replace the standard orifice in a gas purge water level measurement system
The GCO1 permits the use of extremely low bubble rates with increased accuracy and near total reduction of lag between actual level rise and orifice pressure.
Bubble rates as low as 10 bubbles per minute can be used, thereby reducing gas consumption and prolonging the life of the gas bottle, or reducing the duty cycle operation of the compressor pump on our HS-55/45/40/35 bubbler water level measurement systems.
The main GC01 chamber is constructed entirely of polyethylene with a copper coated brass screen to deter aquatic growth, and is supplied fitted with a 2' barrel union to suit a standard 2” threaded pipe. The GCO1 has an in-built 1/4 inch NPT hex brass coupling and is supplied with 1/4 inch NPT male to 3/8 or 1/4 inch tube to suit customer requirements in relation to orifice line. The bottom of the chamber includes a revolving copper coated brass screen for cleaning purposes
The unit is designed to be fitted to existing installations preferably during low water condition.
Refer reverse side for results of comparative tests and installation details.