SDM 2410 Jet Evaporation Method Real Gum Tester
| Brand | SDM |
|---|---|
| Origin | Italy |
| Model | 2410 |
| Standards Compliance | ASTM D381, IP 131, IP 540, EN 26246, ISO 6246, DIN 51784 |
| Temperature Range | Ambient to 250 °C (±3 °C stability) |
| Power Supply | 220 V, 50/60 Hz |
| Heating Power | 3500 W |
| Dimensions (W×D×H) | 75 × 52 × 90 cm |
| Weight | 65 kg |
| Construction | Stainless steel enclosure with aluminum heating block (5-position), integrated steam superheater with adjustable regulator, condensate drain valve, Pt100 temperature sensor, digital PID controller, over-temperature alarm |
| Accessories | Protected flowmeter and steam jet pressure gauge |
Overview
The SDM 2410 Jet Evaporation Method Real Gum Tester is a precision-engineered laboratory instrument designed for the quantitative determination of actual gum content in gasoline, aviation turbine fuels, and other volatile petroleum distillates. It operates in strict accordance with the fundamental principle of controlled steam-jet evaporation—where a precisely metered sample is subjected to high-velocity, superheated steam under standardized thermal and flow conditions, resulting in solvent removal while retaining non-volatile gum-forming residues on a pre-weighed glass beaker. This gravimetric method isolates and quantifies the insoluble oxidative degradation products formed during fuel storage or handling, providing critical quality assurance data for refinery QC labs, fuel certification bodies, and regulatory compliance testing facilities.
Key Features
- Stainless steel chassis with corrosion-resistant finish ensures long-term structural integrity in demanding laboratory environments.
- Five-position aluminum heating block with integrated steam outlet ports enables parallel processing of multiple samples without cross-contamination or thermal interference.
- Integrated steam superheater with fine-tunable regulator maintains consistent steam temperature above boiling point—critical for reproducible evaporation kinetics per ASTM D381 Section 7.2.
- Digital PID temperature control system, coupled with a calibrated Pt100 resistance thermometer, delivers stable bath temperatures from ambient to 250 °C with ±3 °C uniformity across all positions.
- Over-temperature safety cutoff and audible/visual alarm prevent thermal runaway and support GLP-compliant operation.
- Modular stainless steel steam delivery tubing and detachable steam nozzles facilitate cleaning, calibration verification, and traceable maintenance.
- Front-panel digital display provides real-time readout of setpoint, actual bath temperature, and operational status—no external software required for basic operation.
Sample Compatibility & Compliance
The SDM 2410 is validated for use with gasoline (including oxygenated blends), aviation turbine fuels (Jet A, Jet A-1), and naphtha fractions meeting volatility specifications outlined in ASTM D381 Annex A1. Its design fully satisfies the mechanical, thermal, and procedural requirements of ASTM D381 (2023 edition), IP 131 (2022), IP 540 (2019), EN 26246, ISO 6246, and DIN 51784. Each unit undergoes factory calibration against NIST-traceable reference standards, and documentation includes as-delivered temperature uniformity mapping and steam flow linearity verification reports—supporting audit readiness for ISO/IEC 17025-accredited laboratories.
Software & Data Management
While the SDM 2410 operates as a stand-alone benchtop instrument with embedded microcontroller logic, its analog outputs (0–10 V temperature signal, relay status) are compatible with optional third-party data acquisition systems. For laboratories requiring electronic record retention, the instrument’s thermal profile and alarm events can be logged via external DAQ hardware compliant with FDA 21 CFR Part 11 when paired with validated software platforms. All firmware updates follow IEC 62304 Class B medical-device-grade development protocols, ensuring deterministic behavior and revision-controlled traceability.
Applications
- Refinery final product release testing for gasoline gum limits (e.g., ≤5 mg/100 mL per ASTM D4814).
- Aviation fuel quality surveillance at depots and airfields per DEF STAN 91-91 and NATO Code S-1320.
- Investigation of oxidation stability issues during fuel aging studies and additive performance evaluation.
- Supporting root-cause analysis in field complaints related to carburetor deposits, injector fouling, or filter plugging.
- Training and method validation in petroleum technology education programs accredited by API RP 2553.
FAQ
Does the SDM 2410 require external cooling water or compressed air?
No—it operates solely on electrical power and ambient air; steam generation is internal via resistive heating of distilled water supplied separately.
Can the heating block be replaced or recalibrated in-house?
The aluminum block is a fixed component; however, temperature uniformity verification and Pt100 sensor calibration are performed using standard procedures defined in ASTM D381 Appendix X2 and may be executed by qualified lab personnel with NIST-traceable equipment.
Is the instrument suitable for testing ethanol-blended fuels (E10, E15)?
Yes—provided the sample is handled in accordance with ASTM D381 Section 6.3 to minimize ethanol loss prior to evaporation; method precision data for E10 is documented in ASTM D381 Annex A3.
What maintenance intervals are recommended?
Daily visual inspection of steam lines and condensate drain function; quarterly verification of temperature accuracy and steam flow rate using certified gauges; annual full functional check including alarm response and PID tuning validation per manufacturer’s Maintenance Log Template (Rev. 4.1).
