Grabner MINIVAP ON-LINE RVP Process Analyser

MINIVAP ON-LINE is a unique process vapour pressure analyzer measuring according to the worldwide standard measuring principle of the MINIVAP VPS. It combines in a single analyser the measurement of the vapour pressure of gasoline (ASTM D 6378), crude oil (ASTM D 6377), LPG and the vapour-liquid ratio (LVR) of gasoline of up to 2 different sample streams.

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Product Description

Grabner/Reid Vapour Pressure On-Line Analyser

MINIVAP ON-LINE is a process monitoring analyser for the determination of the vapor pressure of gasoline, crude oil, LPG and NPG. Also, the vapour-liquid ratio (LVR) of gasoline can be measured. The measuring principle is identical to the worldwide used laboratory instruments MINIVAP and therefore the MINIVAP ON-LINE produces equivalent results.

Up to 2 different sample streams can be connected to one single analyser. It is the only available process vapour pressure tester that fully complies to the industry relevant ASTM standards for gasoline (ASTM D6378), crude oil (D6377) and LPG (D6897).

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Applications

The measuring principle is based on the triple expansion method of Grabner Instruments´ worldwide approved and accepted laboratory vapour pressure tester for gasoline and crude oil: MINIVAP VPS. The US-EPA declared MINIVAP the official reference instrument for the USA in 1993.

With MINIVAP ON-LINE, the vapour pressure of gasoline (D6378 / D5191), crude oil (D6377 / D323), liquid petroleum gas (D6897 / D1267) and the vapour-liquid ratio temperature of gasoline (D5188) can be determined. With possible connection of up to 2 different sample streams, these measurements can be performed with one single instrument.

Features

    • On-line Compliance Monitoring for Vapour Pressure of Gasoline, LPG and Crude Oil and Vapour/Liquid-Ratio Temperature of Gasoline (V/L=20)
    • One Single Instrument for up to 2 Sample Streams
    • Multiple Point Measurements at Different Nominal Pressures
    • Automatic Calibration & Offset Correction
    • Temperature Controlled Sample Conditioning System
    • 7 Minutes Cycle Time
    • Explosion Proof-Class I
        ♦ EN 60079-2 and EN 60079-0 (EU)
        ♦ NFPA 496 (US)

VAPOUR PRESSURE TESTER STANDARDS

  • ASTM D6378 – Vapour Pressure of Gasoline (VP4)
  • ASTM D6377 – Vapour Pressure of Crude Oil
  • ASTM D6897 – Latest standard for Vapour Pressure of LPG
  • ASTM D5191
  • ASTM D5188 – V/L-Ratio: T (V/L = 20)
  • ASTM D4953
  • ASTM D1267
  • ASTM D323
  • EN 13016 – 1+2
  • IP 394, 409 & 481
  • JIS K2258-2, SHT 0769, GOST 52340

Technical Data

Temperature Range
20 to 60°C (68 to 140°F)
Pressure Range
0 to 1000 kPa (0 to 145 psi)
Power Requirements
100/120/230/240 V AC, 50/60 Hz, 65 W
Field Application
12 V/4A DC (vehicle battery)
Physical Dimensions
580 x 1060 x 260 mm (23.7″ x 43.3″ x 10.6″)
Weight
50 kg (110 lb)

Precision Data

Repeatability
MINIVAP 37.8°C @ 70 kPa) ±0.3 kPa (0.04 psi)
ASTM D323 (Wet Reid Bomb) ±3.2 kPa (0.46 psi)
Reproducibility
MINIVAP 37.8°C @ 70 kPa) ±0.7 kPa (0.10 psi)
ASTM D323 (Wet Reid Bomb) ±5.2 kPa (0.75 psi)

Principle

The sample flows from the sample conditioning system via a quick connector (4) and sample inlet valve (4) into the measuring chamber. The automatic sample introduction and volume adjustments are made by a piston with an integrated pressure transducer (1). The measuring chamber (2) with a total volume of 5 mL is rinsed with 2.5 mL and filled with 1 mL. After closing the valve (4), the single or triple expansion to 5 mL (with the sample under vacuum condition) is obtained by further strokes of the piston. The temperature of the measuring cell is controlled with a high-power thermoelectric module (5) and measured with a precision Platinum sensor (6). To achieve fast pressure equilibrium, especially for crude oil, the measuring unit is rocked during the test procedure.

principle

Automatic piston lubrication is processed with every piston stroke.

principle1

Continuous product development may make it necessary to change product specifications without notice.

Additional information

Test Method

ASTM D1267, ASTM D323, ASTM D4953, ASTM D5188, ASTM D5191, ASTM D6377, ASTM D6378, ASTM D6897, EN13016-1+2, GOST 52340, IP 394, IP 409, IP 481, JIS K2258-2, SHT 0769, SHT 0794, SNT 2932

ASTM D323
Standard Test Method for Vapour Pressure of Petroleum Products (Reid Method)
ASTM D1267
Standard Test Method for Gage Vapour Pressure of Liquefied Petroleum (LP) Gases (LP-Gas Method)
ASTM D4953
Standard Test Method for Vapour Pressure of Gasoline and Gasoline-Oxygenate Blends (Dry Method)
ASTM D5191
Standard Test Method for Vapour Pressure of Petroleum Products (Mini Method)
ASTM D5188
Standard Test Method for Vapour-Liquid Ratio Temperature Determination of Fuels (Evacuated Chamber Method)
ASTM D6377
Standard Test Method for Determination of Vapour Pressure of Crude Oil: VPCRx (Expansion Method)
ASTM D6378
Standard Test Method for Determination of Vapour Pressure (VPx) of Petroleum Products, Hydrocarbons, and Hydrocarbon-Oxygenate Mixtures (Triple Expansion Method)
ASTM D6897
Standard Test Method for Vapour Pressure of Liquefied Petroleum Gases (LPG) (Expansion Method)
EN13016-1+2
PART 1: Liquid petroleum products – Vapour pressure – Part 1: Determination of air saturated vapour pressure (ASVP) and calculated dry vapour pressure equivalent (DVPE)
PART 2: Liquid petroleum products – Vapour pressure – Part 2: Determination of absolute pressure(AVP) between 40 °C and 100 °C
IP 394
Liquid petroleum products – Vapour Pressure – Part 1: Determination of air saturated vapour pressure (ASVP)
IP 409
Liquid petroleum products – Vapour Pressure – Part 2: Determination of absolute vapour pressure (AVP) between 40°C and 100°C
IP 481
Determination of air saturated vapour pressure (ASVP) of crude oil
JIS K2258-2
Crude petroleum and petroleum products — Determination of vapour pressure — Part 2: Triple expansion method
SHT 0769
Standard test method for determination of vapour pressure of petroleum products, hydrocarbons and hydrocarbon-oxygenate mixtures (Triple expansion method)
SHT 0794
Standard test method for Vapour Pressure of Petroleum Products (Mini Method)
SNT 2932
Determination of Vapour Pressure of Chemicals – Triple Expansion Method
GOST 52340
Crude Oil Determination of vapour pressure by expansion method