Proper analysis of the P-T relationship can help service technicians diagnose a refrigeration system issue quickly. The ChillMaster P-T Chart allows quick pressure to temperature conversion by providing essential refrigerant data to mobile devices. Contractors and technicians will enjoy P-T Chart’s user friendly design and precise calculations (based on National Institute of Standards and Technology (NIST) Refrigerant Properties). Other features include the ability to customize screens for certain refrigerants and preferred unit of measurement. More than 70 refrigerants (traditional and natural) are featured in PT Chart. Extras include a training article “Using the P-T Card as a Service Tool.”