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).
The unmatched accuracy makes refineries save thousands of Dollars each day!
Click on the Calculator to calculate your savings today!
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.
- 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
MINIVAP 37.8°C @ 70 kPa) ±0.3 kPa (0.04 psi)
ASTM D323 (Wet Reid Bomb) ±3.2 kPa (0.46 psi)
MINIVAP 37.8°C @ 70 kPa) ±0.7 kPa (0.10 psi)
ASTM D323 (Wet Reid Bomb) ±5.2 kPa (0.75 psi)
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.
Automatic piston lubrication is processed with every piston stroke.
Continuous product development may make it necessary to change product specifications without notice.