The Online 900 Salts in Crude Oil Analyzer is a high-precision, fully automated instrument for the determination of chloride (salt) content in crude oil, in compliance with ASTM D3230 Electrometric Method. Designed for refineries, pipelines, and process monitoring, it measures salts from 3.5 mg/kg to 500 mg/kg (1–150 PTB), providing accurate, repeatable, and reliable results for safe and efficient operations.
This analyzer uses conductivity-based measurement to detect common chlorides such as sodium, calcium, and magnesium, with support for other conductive materials in crude oil. Its robust SS316L construction and IP65-rated enclosure ensure suitability for hazardous Zone 2 areas.
Applications
• Determination of salts in crude oil for refinery and pipeline monitoring
• Compliance with ASTM D3230 standard
• Detection of sodium, calcium, magnesium, and other conductive contaminants
• Monitoring corrosion-causing salts to improve equipment lifespan
• Real-time process control in petroleum refining and transportation
Principle of Operation
The OnLine 900 operates using a motorized syringe mixing system fed by six reagent tanks, selected via a 7-way motorized valve. A calibrated pipe delivers a fresh oil sample to the conductivity cell. The electrometric method detects chloride content, and results are reported through 4–20 mA analog outputs and Modbus RTU interface for seamless integration with DCS or SCADA systems.
Key Features
• Electrometric detection for precise chloride measurement
• ASTM D3230 compliant
• Measuring range: 0–20 PTB (0–57 mg/L)
• Accuracy: ±5% of measurement, repeatability 2%
• Automatic cleaning cycle and solvent usage optimization
• Fast analysis cycle: ~7 minutes plus cleaning
• Redundant Modbus RTU interface with access to the last 100 tests
• High and configurable alarm for safe operation
• Robust sampling system with fast and slow loops for precise sample delivery
• Sample wetted parts: SS316L and standard manufacturer-approved materials
• Ambient operation: 5–56°C, sample inlet ≤62°C, pressure ≤2 bar
• Explosion-proof design: Zone 2, Group IIB T4, EE x (p)
• IP65/NEMA 4 rated cabinet with H2S and hydrocarbon sensors
Technical Specifications
• Detector: Conductivity cell
• Solvents: Xylene, Methanol/Butanol mixture, Naphta cleaning solution
• Reagent containers: 3 × 12 L, 2 × 19 L
• Sample volume: 20 cc/hr; flow: 100 cc/min
• Power supply: 230 V, 50 Hz, 500 W
• Display: 7” Touchscreen HMI
• Analog outputs: 1 × 4–20 mA (primary), 1 × backup
• Digital outputs: Configurable high-limit alarms
• Cabinet: SS316L, outdoor-ready with inspection window
Benefits
• Fast, accurate detection of salts in crude oil for refinery and pipeline safety
• Reduces corrosion risk in process equipment
• Automated operation with minimal maintenance
• Real-time data logging and remote monitoring via Modbus
• Rugged design suitable for hazardous areas and outdoor installations