The LPG vapor pressure tester.
For LPG vapor pressure testing eralytics increased the standard operating range of the eravap to up to 2000 kPa. eravap for lpg is fully compliant with ASTM D6897 and covers a temperature range of -20 °C to 120 °C. Additionally, eravap for lpg can measure gasoline and crude oil according to the most common standard test methods (ASTM D5191, D6377, D6378, D5188, EN 13016).
Vapor pressure testing of LPG
Information on the vapor pressure of LPG is important for the proper choice of storage tanks and shipping vessels. It is mainly measured for safety reasons that the maximum design pressure of storage and handling systems isn’t exceeded under normal operating conditions. The vapor pressure of LPG can also give insights into the initial evaporation under extreme low temperature conditions.
LPG configuration
To cover the extended vapor pressure range needed for LPG vapor pressure testing, eravap for LPG is equipped with special solenoid valves that cover a pressure range up to 2000 kPa. This adds enough safety margin and allows to test the vapor pressure of LPG even at elevated temperatures.
eravap for LPG covers a pressure range of 0 kPa to 2000 kPa and a temperature range of -20 °C up to 120 °C. V/L ratios down to 0.02:1 and up to 4:1 are possible. eravap for LPG offers a repeatability of 0.7 kPa clearly outperforming ASTM D6897.In addition it is equipped with a quick-fit inlet system which allows to connect pressurized cylinders with ease
Technical Specifications
| Available Test Methods | ASTM D5188, D5191, D6377, D6378, D6897, EN13016-1, EN13016-2, EN13016-3 ,IP394, IP409, IP481, JIS K2258-2, SHT 0769, SHT 0794, SN/T 2932, GOST 52340, TVP freely programmable methodsEPA / CARB / US Military & NATO reference methods, TVP measurement VP-V/L Speed TestTM – Combined T(V/L) and vapor pressure measurement |
| Correlation to… | ASTM D323, D1267, D2533, D4953, D5190, D5482 |
| Fuel Specifications | ASTM D910, D1655, D1835, D4814, D6227; EN 228 |
| Temperature Range | 0 °C to 120 °C (32 °F to 248 °F) with Peltier technology. No external cooling is required.-20 °C to 120 °C (-4 °F to 248 °F) with additional low-temperature upgrade (EV01-COOL). External cooling is required. Extrapolated range: -100 °C to 300 °C (-148 °F to 572 °F) |
| Temperature Stability | 0.01 °C (0.02 °F) |
| Pressure Range | 0 kPa to 2 000kPa (0psi to 290 psi) |
| Pressure Resolution | 0.01 kPa (0.0014 psi) |
| Vapor / Liquid Ratio | Variable from 0.02/1 to 100/1 Single-, multi-point and curve measurements |
| Precision | Repeatability: r ≤ 0.15 kPa (0.022 psi) measured with EV10 and cyclopentane @ 37.8 °C Reproducibility: R ≤ 0.50 kPa (0.073 psi) |
| Available Extension Modules | EV01-COOL: Low temperature module (-20 °C – 120 °C / -4 °F – 248 °F) EV01-VISC: High viscosity module (Heated inlet and outlet up to 70 °C / 158 °F) EV01-VPL: Low vapor pressure module (r = 0.1 kPa; pressure resolution = 0.01 kPa) |
| Autosampler | Optional 10-position autosampler – directly attached |