Shengtai Instruments SH6533A Crude Oil Water and Sediment Analyzer (Centrifugal Method)
| Brand | Shengtai Instruments |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | SH6533A |
| Pricing | Upon Request |
Overview
The Shengtai Instruments SH6533A Crude Oil Water and Sediment Analyzer is a purpose-built centrifugal separation system engineered for the quantitative determination of water content and sediment in crude oil samples, in strict accordance with GB/T 6533–2012 (“Determination of Water and Sediment in Crude Oil—Centrifuge Method”). This standard aligns methodologically with ASTM D96 and ISO 9030, ensuring interoperability with international petroleum testing protocols. The instrument operates on the principle of high-speed centrifugation to accelerate phase separation—driving aqueous and solid particulate phases outward from the hydrocarbon matrix based on density differentials. Designed specifically for upstream production facilities, refinery QC laboratories, and petroleum research institutes, the SH6533A delivers reproducible, operator-independent results essential for custody transfer, pipeline specification compliance, and reservoir fluid characterization.
Key Features
- Microprocessor-based control system with intuitive touch-panel interface and real-time digital display of speed, time, temperature, and RCF; automatic parameter recall across sessions
- High-torque brushless DC frequency-controlled motor with imported European ultra-high-speed bearings—ensuring stable rotor dynamics up to 4000 rpm and maintenance-free operation over extended service cycles
- Robust steel frame housing with stainless-steel centrifuge chamber; critical components sourced from certified international suppliers for corrosion resistance and long-term dimensional stability
- Comprehensive safety architecture including overspeed detection, lid interlock monitoring, imbalance sensing, and dynamic rotor lifetime calculation with audible/visual alerts
- Dual-zone heating system with uniform thermal distribution and ±0.5 °C temperature stability; rapid ramp-up enabled by high-power resistive elements and SCT (Smart Centrifuge Technology) speed regulation algorithm
- Electromechanical door lock with acoustic feedback and fail-safe engagement; dual-stage vibration damping system with auto-balance compensation—enabling visual confirmation of mechanical equilibrium prior to run initiation
Sample Compatibility & Compliance
The SH6533A accepts standard 100 mL calibrated glass centrifuge tubes (ASTM D96-compliant geometry), as well as compatible polypropylene or borosilicate alternatives rated for ≥4500 ×g. It supports both fresh and aged crude oil samples across API gravities ranging from 10° to 45°, including emulsified and paraffinic blends. The system meets functional requirements for GLP-compliant testing environments: all operational parameters are logged with timestamped audit trails, and firmware supports user-access-level authentication (admin/operator). While not FDA 21 CFR Part 11–certified out-of-the-box, its data logging architecture is configurable for electronic record retention per ISO/IEC 17025:2017 Clause 7.5.2 and ASTM D4057 sampling protocol traceability.
Software & Data Management
The embedded controller records run logs—including setpoints, actual RCF, elapsed time, thermal profile, and fault codes—in non-volatile memory. Export is supported via USB 2.0 port to CSV-formatted files for integration into LIMS or Excel-based QA reporting workflows. No proprietary software installation is required; raw logs contain ISO 8601 timestamps and SI-unit annotations (rpm, ×g, °C, min). Optional firmware upgrade paths support future integration with Modbus RTU or Ethernet/IP industrial networks for centralized lab automation systems.
Applications
- Quantitative water-in-crude analysis for lease automatic custody transfer (LACT) unit validation
- Sediment quantification in produced fluids prior to dehydration and desalting unit feed
- Field laboratory verification of emulsion breaker efficacy under controlled centrifugal stress
- Research-grade evaluation of asphaltene and wax precipitation kinetics during thermal aging studies
- Refinery incoming inspection per ASTM D1298 (API gravity) and D4057 (sampling) cross-referenced with sediment results
- Regulatory submission support for environmental discharge permits requiring total suspended solids (TSS) and free water thresholds
FAQ
What is the maximum recommended centrifugal force when using glass tubes?
For safety and tube integrity, the maximum relative centrifugal force is limited to 2362 × g when operating with standard 100 mL glass centrifuge tubes.
Does the SH6533A comply with ASTM D96?
Yes—the mechanical design, rotational accuracy, temperature control, and procedural logic conform to the operational scope of ASTM D96–22, enabling direct method equivalence when used with validated sample preparation protocols.
Is calibration documentation provided with shipment?
Each unit ships with a factory calibration certificate covering speed accuracy (±15 rpm at 4000 rpm), temperature uniformity (±0.5 °C at 60 °C), and timer deviation (±0.1 s/min), traceable to CNAS-accredited metrology standards.
Can the instrument be integrated into a networked lab environment?
Native Ethernet or Wi-Fi connectivity is not included; however, the USB data export interface supports scripted ingestion into enterprise LIMS platforms via middleware scripting (e.g., Python-based file watchers).
What is the warranty coverage for rotor assemblies?
Rotors are covered under the standard 12-month parts-and-labor warranty; extended rotor life-cycle management (including fatigue tracking and replacement scheduling) is available under optional service contracts.
