Brooks Instrument 5851EA11BP2D2BA E Series Mass Flow Controller N2 30,000 SCCM 144956328315 It measures 34kHZ when it's

It measures 34kHZ when it's supposed to be at 42kHZ

Includes Gigabit PoE Switch and 2x: MA-PWR-640WAC Power Supply as pictured

Manufacturer VWR Model Number C1213 SKU 19-64557 Ref 23-91526

Drive has been tested fully functional onsite

Manufacturer Scientific Industries Model Number SI-1400 SKU 19-61044 Ref 23-86410

Brooks Instrument 5851EA11BP2D2BA E Series Mass Flow Controller N2 30,000 SCCM 144956328315 It measures 34kHZ when it'sCondition Used Description This Mass Flow Controller has been removed from a fully operational system and is confirmed to be fully functional. It is in good overall physical condition, though please note it exhibits some scuffs and scratches from previous use. We provide 30 Day Warranty. If you encounter any issues within the warranty period, please contact us for assistance. Kindly be aware that there are no other accessories included. Please review