HX-EL1920 Spectra Invent Lubricating Oil Evaporation Loss Tester (Noack Method)
| Brand | Spectra Invent |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Manufacture | China |
| Model | HX-EL1920 |
| Price Range | USD 150–15,000 |
Overview
The HX-EL1920 Spectra Invent Lubricating Oil Evaporation Loss Tester is a precision-engineered laboratory instrument designed to determine the evaporation loss of lubricating oils and base stocks in strict accordance with the Noack volatility test method specified in SH/T 0059—“Test Method for Evaporation Loss of Lubricating Oils (Noack Method)”. This standardized procedure simulates high-temperature service conditions by subjecting a weighed oil sample to controlled heating (typically at 250 °C) under atmospheric or regulated pressure while exposing it to a stream of dry air or nitrogen. Volatile components evaporate, and the mass loss—expressed as a percentage of the original sample weight—is quantified with high reproducibility. The HX-EL1920 implements this gravimetric principle using a robust metal-bath heating system, eliminating open-flame hazards and ensuring thermal uniformity across the test chamber.
Key Features
- Metal-bath heating system with rapid thermal response and stable temperature control up to 300 °C, compliant with SH/T 0059 operational requirements;
- Integrated high-accuracy pressure gauge calibrated to ±0.5 kPa for precise regulation of system backpressure during evaporation;
- Thermally optimized bath medium incorporating Wood’s metal alloy (melting point ~70 °C), enabling superior heat transfer homogeneity and minimizing axial temperature gradients;
- Dedicated vacuum-assisted air/nitrogen purge system with flow metering and adjustable rate control (0–10 L/min), ensuring consistent gas velocity over the sample surface;
- Stainless-steel test chamber and condenser assembly resistant to thermal oxidation and hydrocarbon exposure;
- Compliance-ready design with traceable calibration documentation and CE-marked electrical safety architecture.
Sample Compatibility & Compliance
The HX-EL1920 is validated for use with mineral-based, synthetic, and semi-synthetic lubricating oils—including engine oils, gear oils, hydraulic fluids, and API Group I–V base stocks. It supports sample volumes of 60 ± 0.5 g in standard Noack crucibles (ASTM D5800-compliant geometry). While SH/T 0059 is the primary reference standard, the instrument’s operational parameters align closely with ASTM D5800 (Standard Test Method for Evaporation Loss of Lubricating Oils by the Noack Method) and ISO 2592 (Petroleum products — Determination of flash and fire points — Cleveland open cup method), facilitating cross-method comparability. All critical components are constructed from corrosion-resistant materials suitable for repeated exposure to high-boiling hydrocarbons and oxidation byproducts. The unit meets GB/T 26575–2011 (General Technical Requirements for Petroleum Testing Instruments) and conforms to electromagnetic compatibility (EMC) Class B per GB/T 18268.1.
Software & Data Management
The HX-EL1920 operates as a standalone benchtop instrument without embedded microprocessor control; data acquisition relies on external analytical balance integration (0.1 mg resolution recommended) and manual recording per SH/T 0059 procedural steps. However, its mechanical and pneumatic architecture is fully compatible with GLP-compliant laboratory information management systems (LIMS). Users may document test parameters—including initial/final mass, bath temperature, purge gas flow rate, duration, and ambient barometric pressure—using standardized electronic worksheets aligned with FDA 21 CFR Part 11 audit-trail requirements when paired with validated spreadsheet templates or LIMS modules. Calibration certificates for the pressure gauge and temperature sensor (traceable to NIM, China) are provided with each unit.
Applications
- Quality control of finished lubricants during batch release testing;
- Formulation development of low-volatility engine oils meeting ILSAC GF-6, API SP, and ACEA C-series specifications;
- Base stock evaluation for volatility-driven performance metrics such as oil consumption, deposit formation, and NOACK-related viscosity increase;
- Regulatory compliance verification for OEM technical approvals (e.g., Ford WSS-M2C945-A, GM dexos1 Gen 3);
- Research into thermal stability mechanisms of antioxidant packages under simulated crankcase conditions.
FAQ
What standards does the HX-EL1920 support?
It is engineered specifically for SH/T 0059 and functionally compatible with ASTM D5800 and ISO 2592.
Is the instrument supplied with calibration documentation?
Yes—NIM-traceable calibration certificates for the pressure gauge and bath temperature sensor are included.
Can nitrogen be used instead of air for the purge gas?
Yes—the vacuum-assisted purge system accepts both dried air and nitrogen, with flow rate independently adjustable.
What is the required balance resolution for accurate results?
A laboratory balance with 0.1 mg readability and Class I or II metrological certification is recommended per SH/T 0059 Annex A.
Does the unit require external cooling water?
No—the condenser is air-cooled; no recirculating chiller or tap-water connection is needed.
