Climate Control

HVACR Tech Tip: Master Using the P-T Chart with the ChillMaster Mobile App

Master Using the P-T Chart with the ChillMaster Mobile APP - Parker Hannifin - Parker Sporlan

The HVACR service technician uses an array of tools and test instruments to diagnose problems and evaluate system performance. One tool that is readily available, inexpensive and yet rarely used to its fullest advantage is the pressure-temperature card or P-T Chart.

Proper analysis of the pressure to temperature 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. Download the app today in IOS or Android version


App incorporates a user-friendly design

Contractors and technicians will enjoy the 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 units of measurement.

More than 70 refrigerants (traditional and natural) are featured in the P-T Chart. Extras included with the app - a training article “Using the P-T Card as a Service Tool.


P-T Charts - Superheat and Subcooling content 

  1. How refrigerant exists in a system
  2. Basic principles for P-T charts
  3. Saturated refrigerant
  4. Measuring Superheat
  5. Measuring Subcooling


Refrigerant phase change in a basic system

The app is available for both iOS and Android platforms. Click on your chosen platform to download the ChillMaster P-T Chart app for free.

HVACR Tech Tip: Master Using the P-T Chart with the ChillMaster Mobile App - download link




Other helpful resources:

How to Use the Smart Service Tool Kit for HVACR Diagnosis

Wireless Transmission of Performance Data Extends Equipment Life

How the “Information Anywhere” Revolution Helps Boost Production

Using P-T Analysis as a Service Tool for Refrigeration Systems

Use of Suction Line Filter-Driers for HVAC Clean-up After Burnout

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