ERAVAP Online Vapor Pressure Analyzer by ERALYTICS

Overview

The ERALYTICS ERAVAP Online Vapor Pressure Analyzer is an industrial-grade, continuously operating analyzer engineered for real-time determination of Reid Vapor Pressure (RVP) and True Vapor Pressure (TVP) of petroleum liquids—including gasoline, crude oil, liquefied petroleum gas (LPG), and intermediate distillates—directly in process streams. It operates on the internationally recognized three-stage expansion method, a thermodynamic equilibrium-based technique standardized in ASTM D6377, ASTM D6378, and ASTM D5188. Unlike batch laboratory instruments, the ERAVAP Online integrates seamlessly into refinery and terminal infrastructure to deliver automated, unattended vapor pressure measurements with high reproducibility and traceable calibration. Its robust architecture supports continuous operation under demanding industrial conditions, delivering measurement cycles typically completed within 7 minutes—subject to sample composition—and maintaining compliance with global fuel specifications across North America, Europe, and Asia-Pacific markets.

Key Features

• Dual active measurement chambers with one hot-swap spare chamber—enabling uninterrupted analysis during maintenance or chamber replacement.
• Low-consumption inert purge gas system (N₂) minimizing operational cost and environmental footprint while ensuring explosion-proof integrity.
• Integrated Modbus TCP/IP and VNC-capable Ethernet interface for direct integration into DCS/SCADA systems and remote diagnostics.
• Remote firmware and software updates via ERALYTICS RCS (Remote Configuration System), eliminating on-site service visits for routine upgrades.
• ATEX Zone 1 / UL Class I, Division 1 Type X certified explosion protection, including nitrogen-purged cleaning system and intrinsically safe internal architecture.
• Modular SCS (Sample Conditioning System) supporting up to five independently controlled fluid streams: primary sample, quality control reference, solvent wash, calibration standard, and waste discharge.
• Industrial 10.4″ full-color touchscreen HMI with intuitive navigation, multilingual support, and audit-trail-enabled operator logging.
• Full automation of QC procedures per ASTM D6299, including scheduled drift checks, blank verification, and reference material validation with timestamped reporting.

Sample Compatibility & Compliance

The ERAVAP Online accommodates a broad range of volatile hydrocarbon matrices without pre-treatment when operating within its specified inlet pressure envelope (200–300 kPa for direct feed; 300–7000 kPa when paired with optional pressurized SCS modules). It meets all critical regulatory and industry standards governing fuel vapor pressure testing: ASTM D6377 (RVP of gasoline and oxygenated blends), ASTM D6378 (TVP of volatile crude oils), ASTM D5188 (low-temperature vapor pressure of distillates), and ISO 3015. The system is designed for GLP-compliant operation and supports FDA 21 CFR Part 11 requirements through configurable electronic signatures, secure user access levels, and immutable audit trails for all analytical events, configuration changes, and calibration records.

Software & Data Management

ERALYTICS RCS software provides centralized configuration, real-time monitoring, historical trend analysis, and alarm management across multiple analyzers. All measurement data—including raw pressure transients, temperature profiles, expansion phase timing, and QC flag status—are time-stamped and stored locally on redundant industrial SSDs with optional cloud synchronization. Data export formats include CSV, XML, and OPC UA for interoperability with LIMS and MES platforms. The system logs every digital/analog I/O event, Modbus register write, and touchscreen interaction with SHA-256 hashed integrity verification. Four isolated 4–20 mA analog outputs and four programmable digital I/O channels enable seamless integration with safety instrumented systems (SIS) and emergency shutdown logic.

Applications

• Real-time RVP monitoring at gasoline blending racks to ensure specification compliance prior to pipeline injection or tanker loading.
• In-line TVP verification of crude oil streams entering stabilization units or custody transfer points.
• LPG vapor pressure control during fractionation and storage to prevent over-pressurization and maintain product grade consistency.
• Automated quality gate enforcement at refinery off-gas treatment units using dual-stream comparison (process vs. certified reference).
• Support for advanced process control (APC) models requiring dynamic vapor pressure inputs for distillation column optimization and energy balancing.

FAQ

What vapor pressure standards does the ERAVAP Online comply with?
ASTM D6377, ASTM D6378, ASTM D5188, and ISO 3015 — with full traceability to NIST-traceable pressure and temperature references.
Can the analyzer operate without sample conditioning?
Yes, for low-pressure streams (200–300 kPa); however, high-pressure or contaminated feeds require the optional SCS module for filtration, pressure regulation, and phase separation.
How is explosion protection implemented?
Via ATEX-certified nitrogen purging (IEC 60079-2) and UL Type X enclosure design (UL 60079-0/15), validated for Zone 1 hazardous areas.
What communication protocols are supported?
Modbus TCP/IP (primary), Modbus RTU (RS-485), RS-232 serial, OPC UA (via optional gateway), and native VNC remote desktop access.
Is remote software update capability secure?
Yes — RCS updates employ TLS 1.2 encryption, signed firmware packages, and role-based authentication with dual-factor approval workflows.