Qigao HSY-510G-4 Petroleum Low-Temperature Testing Instrument

Overview

The Qigao HSY-510G-4 Petroleum Low-Temperature Testing Instrument is a precision-engineered dual-bath environmental test chamber designed specifically for standardized low-temperature characterization of petroleum products. It operates on a closed-loop refrigeration principle using an eco-friendly compressor and direct-conduction metal cold baths—eliminating reliance on cryogenic liquids or oil-based cooling media. This architecture ensures rapid thermal response, high spatial uniformity, and long-term stability required for reproducible determination of critical low-temperature performance parameters including cloud point (CP), pour point (PP), cold filter plugging point (CFPP), and turbidity point (TP). The instrument complies with the thermal conditioning requirements specified in key international and national standards: SH/T 0248–2006 (CFPP), GB/T 6986 (cloud point), GB/T 3535 (pour point), and GB/T 510 (pour point, classical method). Its dual-isothermal bath configuration enables simultaneous or independent testing under identical thermal conditions—essential for inter-laboratory method validation and QC batch comparison.

Key Features

• Dual independent metal cold baths (Bath I: –50 °C max; Bath II: –70 °C max), each operating isothermally with ±1 °C setpoint accuracy and ≤2 °C internal uniformity across working volume
• High-efficiency eco-compressor refrigeration system delivering consistent cooling rates of 0.7–1 °C/min and heating rates of 1–3 °C/min
• Digital PID temperature controller with 0.1 °C resolution, real-time display, and programmable ramp/soak profiles
• Stainless steel work surface and bath housings ensuring corrosion resistance, mechanical durability, and ease of cleaning in hydrocarbon-rich lab environments
• Compact benchtop footprint (no external chiller or exhaust ducting required), plug-and-play installation with integrated safety cutoffs (over-temperature, compressor overload, phase failure)
• No liquid coolant handling—reducing operational hazards, maintenance intervals, and regulatory compliance burden associated with glycol or alcohol baths

Sample Compatibility & Compliance

The HSY-510G-4 accommodates standard ASTM D2500 / ISO 20842 / GB/T 6986 glassware (e.g., 100-mL cylindrical test jars, thermometer sleeves, and immersion thermometers conforming to ASTM E1, ISO 17025 traceability requirements). It supports sample volumes from 20 mL to 100 mL and is compatible with all common distillate fuels (diesel, jet fuel, kerosene), lubricating oils, and crude fractions. The instrument’s thermal performance has been verified against reference materials certified per NIST SRM 2360 (Cloud Point Standard) and PTB RM-CP-1. Its design and documentation support audit readiness for GLP (Good Laboratory Practice) and GMP (Good Manufacturing Practice) environments, with full traceability of calibration records, temperature mapping reports, and preventive maintenance logs.

Software & Data Management

While the base model features a standalone digital controller with local data logging (up to 1000 temperature/time entries, exportable via USB), optional firmware upgrade enables RS-485 Modbus RTU or Ethernet TCP/IP connectivity for integration into LIMS or SCADA systems. All temperature readings include timestamped metadata (date, time, bath ID, operator ID if enabled), satisfying FDA 21 CFR Part 11 requirements for electronic records when paired with validated user access controls and audit trail modules. Calibration certificates are issued with ISO/IEC 17025-accredited traceability to national standards (e.g., CNAS-certified labs).

Applications

• Determination of cloud point (GB/T 6986, ASTM D2500) for aviation turbine fuels and diesel blends
• Pour point measurement (GB/T 510, ASTM D97) in lubricants and residual fuels under controlled cooling protocols
• Cold Filter Plugging Point (CFPP) testing (SH/T 0248–2006, ISO 3015) requiring precise isothermal hold at defined sub-ambient temperatures
• Research-grade thermal transition analysis in petroleum product formulation labs
• Quality assurance workflows in refinery QC laboratories performing daily batch release testing
• Educational use in university petroleum engineering programs for hands-on low-temperature rheology and phase behavior studies

FAQ

What standards does the HSY-510G-4 directly support?
It meets the thermal conditioning specifications of SH/T 0248–2006, GB/T 6986, GB/T 3535, and GB/T 510—including dual-bath isothermal capability required by GB/T 510 Annex A.

Can both baths operate at different temperatures simultaneously?
Yes—each bath has independent PID control, allowing concurrent testing at two distinct setpoints within their respective ranges (–50 °C and –70 °C).

Is external calibration verification possible?
Yes—NIST-traceable PT100 probe ports are provided on both baths for third-party validation; temperature mapping per ISO 17025 is supported with supplied mapping protocol documentation.

What maintenance is required for the metal cold bath system?
No bath fluid replacement or filtration is needed; only periodic condenser coil cleaning and annual compressor oil inspection per manufacturer guidelines.

Does the instrument comply with electrical safety standards for international labs?
It conforms to IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and carries CE marking for EMC and LVD directives.