LPG Vapor Pressure Testing at its Best
For LPG vapor pressure testing eralytics increased the standard operating range of the ERAVAP to up to 2000 kPa. ERAVAP LPG is fully compliant with ASTM D6897 and covers a temperature range of -20°C to 120°C. Additionally it can be upgraded with eralytics module for vapor pressure testing of gasoline (ASTM D5191, 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.
Maximum Flexibility with ASTM D6897
ASTM D6897 can be used to measure the vapor pressure of LPG in the temperature range of 37.8°C to 70°C. It covers a vapor to liquid ratio of 0.1:1 to 4:1. The maximum vapor pressure is 3500 kPa. However, the precision statement of a repeatability of 7.4 kPa was only determined in the range of 300 kPa to 1463 kPa.
ASTM D6897 is used to specify the LPG vapor pressure according to ASTM D1835. The vapor pressure of butane must not exceed 483 kPa and the one of propane must be below 1434 kPa according to ASTM D1835 measured at 37.8°C and a vapor to liquid ratio of 0.5:1.
LPG Configuration
To cover the extended vapor pressure range needed for LPG vapor pressure testing, ERAVAP 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 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 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
| 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, SNT 2932, GOST 52340, TVP
freely programmable methods |
| 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. |
| Temperature Stability |
0.01°C (0.02°F) |
| Pressure Range |
0 kPa to 2,000 kPa (0 psi to 290 psi) |
| Pressure Units (selectable) |
hPa, kPa, psi, mmHg, Torr, at, atm |
| Pressure Resolution |
0.01 kPa (0.0014 psi) |
| Vapor / Liquid Ratio |
Variable from 0.02/1 to 100/1 |
| Precision |
Repeatability: r ≤ 0.15 kPa (0.022 psi) measured with EV10 and cyclopentane @ 37.8°C |
| Available Extension Modules |
EV01-COOL: Low temperature module (-20°C - 120°C / -4°F - 248°F) |
| Sample Introduction |
Automated via built-in piston |
| Sample Volume |
1 mL (2.2 mL per rinsing cycle) |
| Measurement Time |
5 minutes for a standard measurement |
| Cleaning |
By next sample or solvent |
| Measuring Chamber |
Nickel-plated aluminum chamber |
| Display |
Industry proven 8.4” color touch screen |
| Languages |
English, German, French, Spanish, Russian, Chinese |
| Interfaces |
Built-in PC with Ethernet, USB and RS232 interfaces |
| Remote Control |
Remote service capability via Ethernet interface |
| PC Software |
ERASOFT RCS - remote control Windows® software for multi-instrument remote control, convenient data transfer, viewing spectra and result analysis |
| Result Database |
Over 100,000 detailed test reports stored in internal memory |
| Alarm Tracking |
All alarm messages are stored in the database together with the result |
| Automated Calibration Routine |
10-point probe offset correction table, calibration history tracking, substance calibration, self-diagnostics |
| Auto Sampler |
Optional 10-position auto sampler – directly attached |
| Operating Conditions |
Temperature range 0°C to 50°C |
| Power Requirements |
Auto-switching 85-264 V AC, 47-63 Hz, max. 150 W (multi-voltage power supply) |
| Dimensions / Weight |
29 x 35 x 34 cm (11.4 x 13.8 x 13.4 in) / 9.7 kg (21.4 lb) |
Pentane, HPLC Grade, Min. 99.0%, 4L
| SKU | PSC-47-03367 |
| MPN | 7801-7-40 |
Welker CP-2GM Constant Pressure Cylinder (CPC), with Gravity Mixer
| MPN | CP-2GM |
Manual Piston Cylinder (MPC), 500 mL, Low Pressure Sampling
| SKU | PSC-47-02817 |
| MPN | MPC-8009 |
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