Sierra Instruments Mass Flow Meter 640S-NAA-L06-M1-EN2-P2-V4-DD-0    used  do not know of calibration and usability  As you can see it powered up on the bench and was reading airflow for function test    We do not have the gear to test these further then this  As-IS you are buying for your purposes we cannot test further then demonstrated so as-is sale 135machine/com

We do not have the gear to test these further then this  As-IS you are buying for your purposes we cannot test further then demonstrated so as-is sale 135machine/com