Holder of certifications to ISO 9001-2008;
ASME S and U;
NB R and PED Module H.
Articles
- VERSATILE VENTURI - Original Paper by Bruce Briggs, President of Primary Flow Signal, Inc., a later version of which has been published in NEWWA with editing by Charles Zimmerman, P. E.
- DIFFICULT WASTEWATER FLOW MEASUREMENT WITH A VENTURI TUBE - Original Paper by Gary Gilbert and Charles Zimmerman, P. E.
- OPEN ARCHITECTURE - Achieving Open Architecture in a Waterworks Control and Information System . --- Charles Zimmerman P. E
- LIQUID FLOW MEASUREMENT WITH TURBINE FLOW METERS - A brief article describing the applications where PFS Liquid Turbine flow meters are beneficial-by Jack Harshman, Senior New Products Development Engineer.
- FLOW MEASUREMENT WITH GAS TURBINE FLOW METERS - A brief article describing the applications where PFS Gas Turbine flow meters are beneficial-by Jack Harshman, Senior New Products Development Engineer.
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Information contained on this page is subject to change at any time without prior notice.
