PULUODY PLD-5096A Copper Strip Corrosion Tester
| Brand | PULUODY |
|---|---|
| Origin | Shaanxi, China |
| Manufacturer Type | Manufacturer |
| Origin Category | Domestic |
| Model | PLD-5096A |
| Pricing | Upon Request |
| Temperature Control Range | Ambient to 100 °C |
| Temperature Stability | ±0.5 °C |
| Heating Power | Main Heating 1000 W, Auxiliary Heating 800 W |
| Power Supply | AC 220 V ±10%, 50 Hz |
Overview
The PULUODY PLD-5096A Copper Strip Corrosion Tester is a precision-engineered laboratory instrument designed for quantitative assessment of corrosive tendencies in petroleum products—including gasoline, diesel, jet fuel, lubricating oils, and greases—toward copper and silver test strips. It operates on the principle of controlled thermal exposure under standardized atmospheric conditions, enabling visual and comparative evaluation of surface discoloration, tarnish, or pitting per internationally recognized corrosion rating scales. The system complies with the fundamental test methodology defined in ASTM D130 (Standard Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test), GB/T 5096 (Petroleum Products—Copper Strip Corrosion Test), and SH/T 0023 (Method for Determining Copper Strip Corrosion of Lubricating Grease). Its architecture integrates thermostatic bath control, vapor management, and mechanical stability to ensure high reproducibility across sequential test cycles and inter-laboratory comparisons.
Key Features
- Stainless steel constant-temperature bath tank with corrosion-resistant finish and oxidation resistance, engineered for long-term immersion stability in aqueous-organic environments.
- Dual-zone heating system: primary 1000 W immersion heater coupled with an auxiliary 800 W heater for rapid thermal ramp-up and precise dwell maintenance at target temperatures (ambient to 100 °C).
- High-fidelity temperature regulation via Pt100 platinum resistance sensor and digital PID controller, achieving ±0.5 °C stability over extended durations (≥3 hours).
- Integrated reflux condenser assembly that captures and returns evaporated moisture to the bath, minimizing volume loss and maintaining consistent bath composition and thermal mass.
- Modular test fixture configuration: bath lid accommodates up to two pressurized test bombs and six copper strip test tubes—or alternatively, two sets of silver strip test tubes—enabling parallel sample evaluation without cross-contamination.
- Robust stainless steel bomb holders, tube racks, and auxiliary water bath components designed to eliminate rust formation—even under prolonged exposure to saline or acidic condensates.
Sample Compatibility & Compliance
The PLD-5096A supports standardized copper strip (ASTM D130 dimensions: 12.7 × 19.1 × 1.6 mm) and silver strip specimens per SH/T 0023 Annex A. It is validated for use with volatile fuels (e.g., aviation turbine fuel per ASTM D1655), middle distillates, residual oils, and grease formulations containing organic acids, sulfur compounds, or reactive halogenated species. All operational procedures align with Good Laboratory Practice (GLP) documentation requirements and support audit readiness for ISO/IEC 17025-accredited laboratories. While not intrinsically certified for hazardous area operation, the unit meets IEC 61010-1 safety standards for electrical laboratory equipment and incorporates over-temperature cutoff protection.
Software & Data Management
The PLD-5096A is a manually operated, hardware-centric instrument with no embedded software interface. Temperature setpoint, real-time bath reading, and elapsed test time are displayed on a dedicated digital controller with non-volatile memory for last-used parameters. For traceability and regulatory compliance, users are advised to record test metadata—including batch numbers, strip identification codes, exposure duration, observed corrosion ratings (per ASTM D130 scale: 1a–4c), and environmental conditions—in external LIMS or electronic lab notebooks. The system supports full audit trails when integrated into workflows compliant with FDA 21 CFR Part 11 (with appropriate electronic signature controls applied at the documentation layer).
Applications
- Quality assurance testing of refinery streams prior to blending or shipment.
- Routine monitoring of storage stability in finished fuel inventories.
- Evaluation of additive package efficacy in mitigating metal corrosion during long-term service.
- Investigation of sulfur species reactivity in low-sulfur diesel and ultra-low-sulfur gasoline (ULSG).
- Supporting root-cause analysis in field failures involving copper-based fuel system components (e.g., injectors, sensors, heat exchangers).
- Research-grade screening of biofuel blends for accelerated copper degradation behavior.
FAQ
What standards does the PLD-5096A fully support?
It is mechanically and thermally calibrated to meet the apparatus requirements of ASTM D130, GB/T 5096, and SH/T 0023—including bath geometry, temperature uniformity, condensation control, and specimen holder specifications.
Can the unit be used for silver strip testing per SH/T 0023?
Yes—the bath lid and tube rack configuration accommodate both copper and silver strip assemblies; silver testing requires separate calibration verification of bath temperature homogeneity at 50 °C ±0.5 °C.
Is the condenser system water-cooled or air-cooled?
It is a passive air-cooled reflux condenser; no external coolant connection is required.
What maintenance intervals are recommended for sustained accuracy?
Biannual verification of Pt100 sensor calibration and annual inspection of heater insulation integrity are advised; stainless steel components require only routine wiping with ethanol between tests.
Does the instrument include corrosion rating reference charts?
No—users must supply ASTM D130 or GB/T 5096 standard comparison charts separately for visual assessment; digital image capture systems may be integrated externally for archival consistency.
