Koehler K45704-TS Automatic Atmospheric Distillation Analyzer

Overview

The Koehler K45704-TS Automatic Atmospheric Distillation Analyzer is an ASTM-compliant, fully automated system engineered for precise determination of boiling point distributions in petroleum products under atmospheric pressure. It implements the classical batch distillation principle—based on controlled heating, vaporization, condensation, and volumetric collection—to deliver standardized distillation curves per ASTM D86, D285, D850, D1078, D4737, D189, as well as ISO 3405, DIN 51751, IP 123, JIS K 2254, and NF M 07-002. Designed for routine QC/QA laboratories in refineries, fuel testing facilities, and petrochemical R&D centers, the instrument performs complete distillation sequences—including initial boiling point (IBP), 10%, 50%, 90%, final boiling point (FBP), dry point (optional), and residue analysis—without manual intervention. Its architecture integrates thermodynamic control, optical liquid-level detection, and real-time data acquisition to ensure high reproducibility across volatile and semi-volatile hydrocarbon streams such as gasoline, jet fuel, kerosene, naphtha, lubricant base stocks, aromatic solvents, and light crudes.

Key Features

• Automated distillation execution with full compliance to ASTM D86 and related international standards for atmospheric distillation.
• Dual-mode operation: standalone control via integrated Windows-based touchscreen PC or networked multi-unit management (up to 32 analyzers) via Ethernet-connected laboratory PCs.
• Pt-100 temperature sensors with PID-controlled heating elements; temperature accuracy maintained at ±0.1 °C across the full 0–450 °C distillation range and cold bath (−5–60 °C) and receiver (0–60 °C) zones.
• Optical infrared liquid-level tracking system coupled with calibrated glass receiving cylinders and precision stepper-motor-driven volume measurement—enabling automatic correction for evaporation loss and meniscus detection at 0.01 mL resolution.
• Programmable distillation rate control (2–15 mL/min, 0.1 mL/min resolution) with adaptive thermal ramping to match sample volatility profiles.
• Integrated non-fluorocarbon refrigeration and resistive heating system supporting simultaneous thermal conditioning of condenser and receiver—critical for accurate recovery of waxy or high-boiling fractions.
• Automatic atmospheric pressure sensing (550–900 mmHg, ±1 mmHg) with real-time barometric correction applied to all reported temperatures.
• Optional Dry Point Detection Kit enables automated identification of dry point per ASTM D86 Annex A1, including flame-out monitoring and safety-triggered shutdown.
• Comprehensive self-diagnostic firmware continuously monitors heater status, coolant flow, sensor integrity, and flame presence (with optional flame detection and suppression module).

Sample Compatibility & Compliance

The K45704-TS accommodates standard 100 mL samples of gasoline, aviation turbine fuels, diesel blends, naphthas, kerosenes, solvent-grade aromatics (e.g., xylene, toluene), and light hydrocarbon mixtures. It supports both clear and hazy samples, including those containing trace particulates or low-level water emulsions typical of field-collected refinery streams. All operational parameters—including heating rate, condenser temperature setpoint, and receiver preheat—are configurable to align with method-specific requirements (e.g., ASTM D189 for 10% distillate residual carbon analysis). The system meets GLP and GMP documentation requirements through audit-trail-enabled software, compliant with FDA 21 CFR Part 11 when deployed with electronic signature modules. Instrument validation protocols support IQ/OQ/PQ execution per ASTM E2500 and ISO/IEC 17025 laboratory accreditation frameworks.

Software & Data Management

The analyzer runs Koehler’s proprietary Windows-based K-Distill™ software, featuring intuitive graphical workflow configuration, real-time curve visualization (distillation % vs. temperature, energy input vs. time), and interactive zoom/pan functionality for detailed inflection analysis. Raw data—including timestamped temperature, volume, power consumption, and pressure—is logged in CSV and XML formats for direct import into LIMS or statistical process control (SPC) platforms. Reports conform to ASTM template structures and include automatic calculation of key metrics (IBP, FBP, T10/T50/T90, slope deviation, recovered volume %, and corrected endpoint temperatures). Software supports user role-based access control, electronic signatures, and revision history logging to satisfy regulatory audit requirements.

Applications

• Refinery process control: Monitoring fractional distillation cuts during crude unit operation.
• Fuel specification compliance: Verifying ASTM D439 (gasoline), D1655 (jet fuel), and D975 (diesel) distillation limits.
• Blending optimization: Quantifying volatility contributions of reformate, alkylate, and oxygenate components.
• Research applications: Characterizing biofuel blends (e.g., ethanol-gasoline, biodiesel-diesel) for volatility-related performance modeling.
• Regulatory reporting: Generating certified test reports for EPA, CARB, and EU EN 228/EN 590 submissions.
• Residue and carbon-forming tendency assessment: Performing ASTM D189 residue analysis on light distillates.

FAQ

Does the K45704-TS comply with ASTM D86 for gasoline testing?
Yes—the instrument executes the full ASTM D86 procedure, including specified heating rates, thermometer calibration, and volumetric recovery corrections.
Can it operate without a networked PC?
Yes. The built-in industrial-grade touchscreen PC enables fully autonomous operation, method storage, and report generation.
Is dry point detection included by default?
No. Dry point detection requires the optional Dry Point Detection Kit (K45704-DP), which adds flame-sensing hardware and algorithmic endpoint logic.
What refrigerant is used in the cold bath system?
The system employs an environmentally compliant, non-ozone-depleting refrigerant with zero global warming potential (GWP), eliminating fluorocarbon usage per EU F-Gas Regulation and EPA SNAP guidelines.
How is data integrity ensured for regulated environments?
K-Distill™ supports 21 CFR Part 11-compliant audit trails, electronic signatures, and locked data archives—fully traceable to user, timestamp, and instrument event log.
What maintenance intervals are recommended?
Daily visual inspection, weekly calibration verification using NIST-traceable reference thermometers and certified volumetric standards, and annual preventive maintenance per Koehler Service Bulletin KB-45704-M.