(Sparta, NJ) - Testo is introducing a NEW digital AC/Refrigeration System Manifold, testo 557, with 4 valves and a built in vacuum gauge. The 557 is ruggedly built to use everyday for installing, analyzing and maintaining all A/C, heat pump and refrigeration systems. In addition, the 557 will also perform leak tests on AC/R systems with temperature compensation insuring accurate results. The 557 has 2 NTC temperature probe inputs and can simultaneously measure, and display superheat and sub cooling in real time. In addition, it displays high/low side pressure, line temperature and calculates saturation temperatures.
The testo 557 RSA comes standard with 2 clamp probes, integrated hanger-hook, built in hose holders and a hard carrying case.