Patent ID: 11897798
Assignee: BIOSAFE SYSTEMS LLC
Field: Measurement (Instruments)
Classification: CPC C  A  G | IPC A  C  G

Claim 13:
14. A process for controlling the concentration of peroxyacetic acid in a chiller employing a device according to claim 1, the process comprising:
providing a continuous sample of aqueous alkaline fluid from a chiller to the first line,
controlling the first valve to provide a predetermined constant flow rate of the sample to the mixing tank;
mixing the aqueous fluid provided to the mixing tank;
monitoring the pH of the aqueous fluid in the mixing tank, and adding acid to the aqueous fluid in the mixing tank to reduce the pH of the aqueous fluid in the mixing tank;
delivering aqueous fluid in the fourth line to the sixth line when the monitored pH of the aqueous fluid is within the working range of the first PAA sensing device; and
delivering peroxyacetic acid to the chiller in response to the signal from the first PAA sensing device.