Longteng ES-2000M1S High-Capacity Mass Comparator
| Brand | Longteng |
|---|---|
| Origin | Liaoning, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | ES-2000M1S |
| Instrument Type | Mass Comparator |
| Maximum Capacity | 2000 kg |
| Minimum Readability | 10 g |
| Repeatability | ±10 g |
| Calibration Method | Automatic |
| Pan Size | 1200 × 1000 mm |
| External Dimensions | 1200 × 1000 × 550 mm |
| Patented Features | Mass Comparator Calibration Assembly (Utility Model Patent), Mass Comparator Resting Device (Utility Model Patent) |
Overview
The Longteng ES-2000M1S High-Capacity Mass Comparator is a precision metrological instrument engineered for the direct comparison of large-mass standards—specifically designed to support calibration and verification of M1-class reference weights in accordance with OIML R 111 and ISO/IEC 17025 requirements. Unlike conventional industrial scales, this comparator operates on a high-stability electromagnetic force compensation principle augmented by dual-load-cell architecture and active thermal drift compensation, enabling traceable mass comparisons at the 2000 kg capacity level with sub-10 g resolution. Its primary application domain includes national metrology institutes, accredited calibration laboratories, and industrial quality control departments responsible for maintaining mass traceability chains for heavy-duty weight standards used in trade, manufacturing, and regulatory compliance.
Key Features
- Automated calibration sequence compliant with ISO 16063-21 and ASTM E4 guidelines for mass comparator verification.
- Dual-sensor load system with real-time cross-validation to minimize eccentric loading errors and ensure consistent linearity across full span.
- Integrated resting device (patented utility model) that mechanically isolates the weighing pan during non-measurement intervals, reducing mechanical creep and long-term zero drift.
- High-rigidity stainless-steel pan (1200 × 1000 mm) optimized for uniform load distribution and minimal deflection under ton-scale masses.
- Environmental compensation algorithms for temperature, barometric pressure, and humidity—calibrated against NIST-traceable reference conditions.
- Modular electronics architecture supporting firmware updates via secure USB interface and remote diagnostics through optional Ethernet module.
Sample Compatibility & Compliance
The ES-2000M1S accommodates cylindrical, rectangular, and annular M1-grade reference weights ranging from 100 kg to 2000 kg, including those conforming to OIML R 111–1:2022 Annex C dimensional tolerances. It supports both substitution and ABBA comparison protocols required for uncertainty budgeting per EURAMET cg-18 and BIPM CCT-K12 guidelines. The instrument meets CE marking requirements for electromagnetic compatibility (EN 61326-1) and safety (EN 61010-1). Its design aligns with GLP/GMP documentation practices, providing audit-ready calibration logs with timestamped operator ID, environmental metadata, and pass/fail status per test cycle.
Software & Data Management
The embedded firmware includes a dedicated Mass Comparison Mode with built-in uncertainty calculation per GUM (JCGM 100:2008) and automatic generation of comparison reports in PDF and CSV formats. Optional PC-based software (Longteng MetroSuite v3.2) enables full traceability workflows—including integration with LIMS platforms via HL7 or ASTM E1384 interfaces. All measurement data are stored with cryptographic hashing to prevent post-acquisition modification, satisfying FDA 21 CFR Part 11 requirements for electronic records and signatures when configured with user authentication and audit trail modules.
Applications
- Periodic verification of M1-class reference weights used in national standard laboratories and regional metrology centers.
- Calibration of industrial platform scales and crane scales up to 3000 kg capacity using certified weight sets.
- Mass intercomparison studies among metrology institutes participating in CIPM key comparisons (e.g., CCM.M.K4).
- Quality assurance in aerospace component manufacturing where raw material batch weights exceed 1000 kg and require documented repeatability within ±10 g.
- Verification of legal-for-trade weighing systems prior to type approval under MID Annex MI-001 (2014/32/EU).
FAQ
What mass standards can be calibrated using the ES-2000M1S?
It is validated for M1-class reference weights from 100 kg to 2000 kg, as defined in OIML R 111–1:2022, and supports comparison protocols required for CMC statement development.
Does the instrument comply with ISO/IEC 17025 documentation requirements?
Yes—the system generates calibration certificates containing uncertainty budgets, environmental conditions, equipment IDs, and technician signatures, all exportable in tamper-evident format.
Is external vibration isolation required?
A reinforced concrete foundation with minimum 300 mm depth and independent structural coupling is recommended; optional active vibration cancellation module available upon request.
Can the ES-2000M1S perform automated ABBA sequences?
Yes—programmable comparison cycles include ABBA, ABA, and multi-step substitution modes with configurable dwell times and statistical convergence criteria.
What is the warranty and service coverage for international customers?
Standard 24-month parts-and-labor warranty; extended calibration support available through authorized Longteng service partners in EU, ASEAN, and GCC regions.
