The future of LPG vapor pressure testing technology.

JIS, K2258-2, ASTM, D323, D5191, D6378, D2533, D910, D1267, D4953, D5188, D5190, D6377, D6897, IP, 394, 409, 481, EN, 13016-3, 13016-1-2, 228

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Gathering information on the vapor pressure of liquified petroleum gas (LPG) has never been more important for the choice of storage tanks and shipping vessels. Safety is a top priority, and it needs to be measured so that the maximum design pressure of storage and handling systems isnt exceeded under normal operating conditions.

For accurate and precise LPG vapor pressure testing, Eralytics created the ERAVAP LPG vapor pressure analyzer with an increased standard operating range up to 2,000 kPa and a quick-fit inlet system which allows connecting to pressurized cylinders with ease. ERAVAP LPG covers the model series temperature range of -20 C to 120 C and is fully compliant with ASTM D6897.

This leading-edge measurement principle in vapor pressure testing renders the external vacuum pump obsolete. The built-in piston draws in the sample at the beginning of the measurement. The piston then creates a vacuum by expanding the headspace above the sample to the predefined vapor to liquid (V/L) ratio. The vapor pressure analyzer then heats up the measurement cell to the measurement temperature and records the vapor pressure.

*To to improve measurement procedures to maximize safety in crude oil transportation, ERAVAP manufacturer Eralytics closely cooperates with Canadian Crude Quality Technical Association (CCQTA) and the American Crude Oil Quality Association (COQA), a partnership that resulted in the development of a device capable of measuring crude oil at a V/L ratio as low as 0.02/1.

To request a quote for the ERAVAP LPG analyzer, please click here.


features__astm compliantERAVAP is fully compliant with ASTM D1267, ASTM D323, ASTM D4814, ASTM D4953, ASTM D5188, ASTM D5190, ASTM D5191, ASTM D6377, ASTM D6378, ASTM D6897, ASTM D910, providing both standard method and refined methodology.
features__simple operatonAll eralytics analyzers use an intuitive menu structure that is easy to navigate. Samples need no prior preparation and measurements are done fully automated.
A direct out-of-the-box connection to LIMS (Laboratory Information Management System) is established with a standard Ethernet cable.No extra software or PC are necessary.
features__footprintThe small footprint of the eralytics instruments makes them the first choice for use in the lab and on-site.
features__touch screenAll Eralytics analyzer results are displayed immediately after the test on their large and user-friendly color touch screen.
features__high precisionThe outstanding precision of the ERAVAP is the result of combining the innovative measurement cell design with a choice of cutting-edge instrument parts. Among those count a self-lubricating piston drive, a built-in shaker motor and state-of-the-art solenoid valves that prevent cross contamination between samples. The ERAVAP instrument clearly outperforms the standard methods in terms of repeatability and reproducibility. (r = 0.3 kPa, R = 0.7 kPa).
features__portableThe Eralytics units are all lightweight and built with an integrated carrying handle, they are versatile and ideally suited for mobile applications as well.


The following accessories are recommended for purchase in sequential order (see eStore):

1st Year: No spare parts are required
2nd Year: Sampling tube with Luer connector
Sampling tube 0,5m with Luer connector
Teflon o-ring for EV01-A002a Mesh inlet filter 80µ
Outlet tube
Kalrez O-ring for pressure sensor (Kalrez 12.42×1.78)
O-ring small for measuring cell cover (Viton 6×1.5)
Remaining Parts:


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 freely programmable methods EPA / 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, 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 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 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 Single-, multi-point and curve measurements
Precision Repeatability: r ≤ 0.15 kPa (0.022 psi) / 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-LOW: Low vapor pressure module (r = 0.1 kPa; pressure resolution = 0.01 kPa)

Sample Introduction Automated via built-in piston Automated sample filtration through a reuseable 80 µm mesh filter No external vacuum pump is required
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” color touch screen
Languages English, German, French, Spanish, Russian, Chinese
Additional langages available upon request
Interfaces Built-in PC with Ethernet, USB and RS232 interfaces
Direct LIMS connectivity via LAN, output to printer or PC as CSV or PDF
Optional input by external keyboard, mouse and barcode reader
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
Results can be marked for hazy appearance
Graphical view of curve measurements
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, Humidity up to 90% RH, non condensing
Power Requirements Auto-switching 85-264 V AC, 47-63 Hz, max. 150 W (multi-voltage power supply)
Field application: 12 V DC (vehicle battery) adapter available
Model Number EV20
Dimensions / Weight 29 x 35 x 34 cm (11.4 x 13.8 x 13.4 in) / 9.7 kg (21.4 lb)


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ASTM D6897

AYA-83-22024 EV01-D6897 Software module for the measurement of the vapor pressure of LPG
AYA-82-22237 Mesh inlet filter 80µ (5 pcs, 1 pc inside Sample inlet on an instrument)
AYA-82-22084 Outlet tube
AYA-82-22085 Waste container
AYA-82-22086 Power cable
AYA-82-22414 Quick-connector inlet nut for ERAVAP (EV10) and ERAVAP LPG (EV20)
AYA-82-22543 High-pressure filling tube (0,7m) for EV10-REG and EV20-REG
AYA-83-22193 ERAVAP MPC module for sampling & measuring pressurized crude oil
AYA-82-22439 ERAVAP FPC module for sampling & measuring pressurized crude oil and LPG


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