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| The testo 557 RSA |
An independent panel of 30 contractors acted as judges in the competition that had 127 entries from over 80 different brands. Testo’s 557 RSA received an Honorable Mention in the “Testing and Monitoring Products” category.
The testo 557 four valve manifold with a built in vacuum gauge is the next high performance, low cost Refrigeration System Analyzer from testo. Building upon the easy to use 550 platform designed by testo, the 557 has two NTC temperature probe inputs and can either simultaneously or individually calculate superheat and subcooling in real time.
“We are very appreciative to receive recognition on the latest refrigeration system analyzer from testo,” product manager, Doug Goodwin, said. "We believe the 557 is a great advancement in refrigeration system analyzer technology."
The built in vacuum gauge of the 557 allows the technician to know when a system’s evacuation limit has been reached. The 557 will also perform integrity leak tests on AC/R systems with temperature compensation, insuring accurate results. The unit contains two temperature probe inputs for simultaneous real time calculation of superheat and subcooling. The testo 557 has 40 pre-stored refrigerants, eliminating the need for PT charts.
