Frequency Input

Contrec 104D Contrec 103D Field Mounted Rate Totaliser - DC Powered
Contrec 104D Contrec 104D Field Mounting Rate Totaliser - Loop Powered
Contrec 104D Contrec 114D Frequency/Pulse Input Batch Controller
Contrec 104D Contrec 102D Simple Field Mounting Flow Rate Totaliser
natural gas flow computer 515 – AC01 Additive Injection Controller
natural gas flow computer Contrec 515-OC01 Open Channel Flow Computer for Frequency Flow Meter and Analog Level Sensors