MINIVAP VAPOR PRESSURE TESTER
MINIVAP VP Vision is a highly versatile portable vapor pressure tester that features best-in-class precision and a pressure range of 0-2000 kPa. It is the first analyzer that demonstrates excellence in engineering by earning certificates for robustness and durability. Based on Grabner´s cutting-edge Cockpit™ technology, the instrument offers unmatched networking capabilities and enables worldwide access to analyzers.
Direct / Indirect Determination of the Absolute Vapor Pressure (“VOC-Methods”)
The model MINIVAP VPL Vision was developed to automate the manual ASTM D2879 Standard Test Method for Vapor Pressure by Isoteniscope for low volatile samples, which is used by the chemical industry. The instrument incorporates a direct and an extrapolated “VOC” method for absolute vapor pressure measurement of single- and multi-component samples.
The direct “VOC”-method is a static method for determining the absolute vapor pressure required for safety data sheets. The indirect method additionally allows to extrapolate to extremely low pressures or to temperatures that exceed the instruments temperature range (-100°C to +300°C). Both methods yield results comparable to the static ASTM D2879 Isoteniscope method, but do not require sample evacuation prior to testing. Based on the GRABNER Triple Expansion Method, air/gases are removed automatically from the measurement result and the sample composition is maintained during measurements.
“VOC”-methods are available in both the MINIVAP VPL and the VP Vision analyzer. Because of a better sensitivity for low volatile samples, the precision of the VPL Vision is significantly better in the pressure range of 0.1 to 30 kPa.
Methods included in MiniVap VP Vision
ASTM D6378 – Vapor Pressure of Gasoline and Petrochemicals (VPx)
ASTM D5191– DVPE Dry Vapor Pressure Equivalent (w/ EPA and CARB correlation formulas)
ASTM D6377 – Vapor Pressure of Crude Oil (VPCRx)
ASTM D6897 – Vapor Pressure of LPG up to 2000 kPa
ASTM D5188 – V/L-Ratio (TV/L)
Fast Mode™ – ASTM D5188 & D5191 Fast Mode™ Method
EN 13016 / 1 – Air Saturated Vapor Pressure
EN 13016 / 2 – Absolute Vapor Pressure
IP 394, 409, 481 – IP Methods for gasoline and crude oil
JIS K2258-2 – Japanese standard method for gasoline
SHT 0769 – Chinese standard method for gasoline
SHT 0794 – Chinese standard test method for Vapor Pressure of Petroleum Products (Mini Method)
SNT 2932 – Determination of Vapor Pressure of Chemicals – Triple Expansion Method
GOST 52340 – Russian / CIS standard method for crude oils
“VOC” Methods – Direct and Indirect Low Volatility Methods
TVP – True Vapor Pressure TVP of Crude Oils (FW 2.0)
Custom – Customized Single and Triple Expansion Methods
CRUDE OIL PACKAGE
MINIVAP VPXpert or MINIVAP VPSH (only VPSH: plus Rocking Plate) – Floating Piston Cylinder GRABNER INSTRUMENTS’ complete package for the vapor pressure measurement of crude oil according to ASTM D6377 (Expansion Method). MINIVAP VPXpert and VPSH are extremely versatile instruments for the automatic determination of the vapor pressure behavior of gasoline and gasoline oxygenated blends, live and dead crude oil, solvents and other chemical
compounds. MINIVAP is the world wide standard instrument that is used by all major refineries, oil and pipeline companies, independent laboratories and car manufacturers. The US-EPA declared MINIVAP as the official reference instrument for the USA. MINIVAP VPS/H are stand-alone units that do not require any accessories. The unique piston based design for automatic sample introduction and volume expansion of the measuring cell makes an expensive and bulky vacuum pump unnecessary. The Grabner measuring principle in combination with the latest standards ASTM D6377 (for Crude Oil) and ASTM D6378 (for Gasoline) avoids tedious sample chilling and air saturation. This new technology significantly increasesrefinery profits: it reduces expensive labor time, eliminates operator bias and has considerably improved test precision that offers the advantage to blend closer to the limits and avoid product give-away. MINIVAP VPS is mostly used for QC purposes while VPXpert and VPSH offer even more features for crude oil and R&D applications, like volatility studies at elevated temperatures and at very low vapor/liquid ratios.
Made in West Europe