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Certifier Flow Analyzer
The Certifier Flow Analyzer 4070 Ventilator Test System is a low-cost test system capable of testing multiple parameters of ventilator performance. The Certifier FA model 4078 Interface Module and model 4070 Test System have been discontinued as of August 15, 2025. The Certifier FA High Flow (4076) and Low Flow (4072) Modules remain available for purchase. You can choose to add another of these flow modules to work with your existing 4078 interface.
Calibration and Service
Looking to calibrate your TSI Certifier™ Flow Analyzer? TSI now offers worldwide service! To find out about our service, calibration, and repair options, visit our Flow Service page.
Repair service for the discontinued 4078 Interface Module will continue until August 2030. Calibration service for the Certifier FA High Flow and Low Flow Modules will continue as normal.