R152A pressure temperature chart (PT)
An R152A pressure temperature chart (PT chart) is a saturation lookup for R152A: it relates temperature and saturation pressure when liquid and vapor coexist in equilibrium. This is useful for thermodynamic interpretation, but it is not a universal “normal running pressure” diagnostic chart.
Pressure basis: absolute vs gauge
The table below is absolute pressure (kPa(a), bar(a), psi(a)). Many gauges display gauge pressure (relative to ambient). Converting requires local atmospheric pressure:
Learn more: Gauge vs absolute pressure (psig vs psia).
Safety note
Refrigerants have safety classifications (toxicity/flammability) and their use is governed by codes and local regulations. This page is educational and provides property reference data only — always follow OEM procedures and applicable safety requirements.
R152A saturation pressure vs temperature (reference table)
Generated using CoolProp (the same property engine used by FluidTool) at Q=0 saturation. Values are rounded for readability.
| T (°C) | T (°F) | Psat (kPa(a)) | Psat (bar(a)) | Psat (psi(a)) |
|---|---|---|---|---|
| -20 | -4 | 120.7 | 1.207 | 17.5 |
| -10 | 14 | 181.5 | 1.815 | 26.3 |
| 0 | 32 | 264.0 | 2.640 | 38.3 |
| 10 | 50 | 372.8 | 3.728 | 54.1 |
| 20 | 68 | 512.9 | 5.129 | 74.4 |
| 30 | 86 | 689.8 | 6.898 | 100.0 |
| 40 | 104 | 909.3 | 9.093 | 131.9 |
| 50 | 122 | 1177.4 | 11.774 | 170.8 |
| 60 | 140 | 1500.7 | 15.007 | 217.7 |
| 70 | 158 | 1886.4 | 18.864 | 273.6 |
How to verify any row in FluidTool
- Open FluidTool with R152A selected: /?fluid=R152A
- Choose a Two-phase input pair (Temperature & Quality / T + Q).
- Set Q=0 and enter the temperature from the table to read Psat.
Related
- R152A data sheet: basic identifiers and thermodynamic context.
- Refrigerant PT chart: what Tsat(P)/Psat(T) means and common pitfalls.
- Superheat & Subcooling: interpret measured line temperature vs saturation temperature.