Testo AG: Digital Manifold/System Analyzer
The Testo 549 Digital Manifold AC/Refrigeration System Analyzer fulfills many of the daily requirements in refrigeration contracting. The 549 has 60 refrigerant profiles stored internally and a five-year warranty (with registration). It measures high- and low-side pressure, displays saturation/evaporation temperatures, and provides digital accuracy. With optional temperature probes, the Testo 549 provides accurate, real-time superheat and sub-cooling measurements at the push of a button.