公开(公告)号：US10739270B2

公开(公告)日：2020-08-11

申请号：US15665107

申请日：2017-07-31

Applicant: TRANE INTERNATIONAL INC.

Inventor： Steven Staats ,  Julie A. Majurin ,  Ellis Johnson

IPC: G01N21/78 ,  G01N21/29 ,  G01N31/22 ,  G01N33/28

Abstract: A method for operating a field testing device to detect an additive in a refrigerant and/or lubricant. The method includes mixing a reactive medium with the refrigerant and/or lubricant. The reactive medium is configured to react with any additive present in the lubricant and/or refrigerant to form a product that has a different color than the reactive medium. The method also includes determining the additive concentration of the lubricant and/or refrigerant by utilizing the color of the reaction mixture. The field operating device is portable such that the additive concentration may be determined while in the field.