This is for the acquisition of thermal flow meter switches (SOR T21) to detect flow in our buffer air system during tunnel operations.

Background
The National Aeronautics and Space Administration (NASA) is issuing this sole source requirement for the acquisition of thermal flow meter switches (SOR T21) to detect flow in their buffer air system during tunnel operations.

The contract aims to ensure the proper functioning of the buffer air system at the Unitary Plan Wind Tunnel facility. The award is directed towards a company that specializes in manufacturing these specific flow switches, which are critical for NASA's operational needs.

Work Details
The contract involves the procurement of SOR T21 Thermal Differential Flow Switches designed for use in the buffer air system.

The specifications for the required flow switches are as follows:
- Model: SOR T21 Thermal Differential Flow Switches
- Sensors: Twin-tip 316/316L stainless steel sensors
- Sensor Length: 5 inches
- Process Connection: ¾" NPT(M)
- Electronics Enclosure: NEMA 4 rated
- Input Power: 24 VDC
- Output Type: 5A DPDT Relay @ 250 VAC

The lead time for delivery is specified as 10 weeks after receipt of order (ARO).

Place of Performance
NASA Langley Research Center, Hampton, VA 23681-2199