Yoke YP200001 Desktop Electronic Balance
| Brand | Yoke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | YP200001 |
| Instrument Category | General-Purpose Laboratory Balance |
| Maximum Capacity | 20,000 g |
| Readability | 100 mg |
| Calibration Method | Manual |
| Pan Dimensions | 255 × 190 mm |
| Overall Dimensions (W×D×H) | 360 × 300 × 165 mm |
| Power Supply | DC |
Overview
The Yoke YP200001 Desktop Electronic Balance is a high-stability, general-purpose laboratory balance engineered for routine mass measurement tasks in quality control laboratories, educational institutions, and industrial preparation areas. It operates on electromagnetic force compensation (EMFC) principle—where the load-induced displacement of the weighing pan is detected by a precision photodiode sensor, and counteracted via a feedback current through an electromagnet—ensuring consistent linearity and repeatability across its full 20 kg capacity range. Designed for environments where robustness and operational simplicity are prioritized over microgram-level resolution, the YP200001 delivers 100 mg readability with optimized thermal drift compensation and mechanical damping to minimize oscillation during dynamic weighing. Its compact footprint and low-profile chassis support integration into benchtop workflows without compromising accessibility or ergonomic loading.
Key Features
- Stable electromagnetic force compensation (EMFC) transduction system ensures long-term zero stability and minimal hysteresis under repeated loading cycles.
- Manually calibrated design compliant with internal verification protocols; supports external calibration using Class M2 or better standard weights per ISO 9001 and ISO/IEC 17025 guidelines.
- Durable ABS plastic housing—including removable transparent draft shield (top cover) and reinforced base—provides impact resistance while maintaining low mass inertia for faster settling time.
- Large, corrosion-resistant stainless-steel weighing pan (255 × 190 mm) accommodates bulky samples, containers, or multi-vessel configurations common in formulation and packaging QA/QC.
- Integrated DC power architecture eliminates AC line noise interference and enables deployment in mobile or off-grid lab settings when paired with regulated 12 V DC sources.
- Clear 6-digit LCD display with backlighting ensures legibility under variable ambient lighting conditions typical in shared laboratory spaces.
Sample Compatibility & Compliance
The YP200001 is suitable for non-hygroscopic, non-volatile solid and granular samples up to 20 kg—including powders, aggregates, packaged goods, and pre-weighed reagent kits. It is not intended for use with volatile solvents, magnetic materials, or samples requiring hermetic containment. The balance conforms to national metrological verification regulation JJG 1036–2008 (China) for non-automatic weighing instruments and meets basic requirements for GLP-compliant documentation when used with traceable calibration records. While not certified for FDA 21 CFR Part 11 electronic record integrity, it supports manual audit trails and can be integrated into paper-based SOPs aligned with ISO/IEC 17025 Clause 6.4 (Equipment Management).
Software & Data Management
This model does not feature built-in RS232/USB connectivity or proprietary software—consistent with its role as a standalone, operator-centric instrument. Data output is limited to visual readout only; however, optional third-party serial interfaces (e.g., TTL-to-USB adapters) may be employed for basic data logging in controlled environments. All calibration and maintenance activities must be recorded manually in laboratory notebooks or LIMS-compatible spreadsheets, following institutional documentation policies. Firmware updates are not supported; hardware longevity is ensured through modular component design and availability of spare parts directly from Yoke’s Shanghai manufacturing facility.
Applications
- Raw material receipt inspection in food, pharmaceutical, and chemical manufacturing facilities.
- Batch weight verification prior to packaging or labeling operations.
- Student experiments in physics and chemistry labs requiring repeatable macro-scale mass determination.
- Inventory management of consumables and tools in maintenance workshops or R&D support centers.
- Preparation of bulk buffer solutions or media formulations where ±0.1 g tolerance is sufficient.
- Calibration reference checks for lower-capacity analytical balances using substitution methods.
FAQ
What is the recommended calibration frequency for the YP200001?
Calibration should be performed before first use, after relocation, following any mechanical shock, and at least once per shift in continuous operation environments—per ISO 9001 Section 7.1.5 and internal QC protocols.
Can this balance be used in a fume hood?
Yes, provided ambient airflow is minimized (<0.2 m/s at pan level) and temperature gradients remain stable; the absence of active ventilation shielding requires user-controlled environmental stabilization.
Is the pan removable for cleaning?
The stainless-steel pan is fixed but accessible; cleaning is performed in situ using lint-free cloths and ethanol—no disassembly required.
Does the YP200001 support unit conversion (e.g., g → oz)?
No; it displays mass exclusively in grams with fixed 100 mg resolution.
What is the warm-up time required for optimal accuracy?
Minimum 30 minutes after power-on under stable ambient conditions (20–25 °C, <60% RH) to achieve thermal equilibrium in the EMFC sensor assembly.
