100JC Precision Electronic Balance
| Origin | Zhejiang, China |
|---|---|
| Manufacturer Type | Distributor |
| Product Origin | Domestic (China) |
| Model | 100JC |
| Instrument Type | Precision Balance |
| Capacity | 110 g |
| Readability | 0.01 g |
| Pan Diameter | Φ118 mm |
| Power Supply | AC 220 V / DC 9 V |
| Repeatability | ≤ ±0.02 g (typical, per ISO 9001 calibration practices) |
| Compliance | Meets JJG 1036–2008 (Chinese National Verification Regulation for Electronic Balances), compatible with ISO/IEC 17025 laboratory environment requirements |
Overview
The 100JC Precision Electronic Balance is an entry-level analytical-grade weighing instrument engineered for consistent accuracy and operational reliability in industrial QC labs, production line stations, and educational laboratories. Based on electromagnetic force compensation (EMFC) transduction technology, it delivers stable mass measurement by dynamically balancing the gravitational load against a precisely regulated electromagnetic field—ensuring high reproducibility without mechanical wear. With a nominal capacity of 110 g and readability of 0.01 g (10 mg), the 100JC meets the performance threshold required for routine formulation checks, raw material verification, sample portioning, and counting applications where sub-centigram resolution is essential but microgram-level sensitivity is not mandated. Its compact footprint and lightweight construction support flexible deployment across benchtop, mobile cart, or field-use scenarios.
Key Features
- Detachable draft shield assembly: Optimized airflow management minimizes convection-induced drift; modular design simplifies cleaning and accommodates irregular or tall samples.
- Dual-power operation: Supports both AC 220 V mains input and DC 9 V external adapter—enabling uninterrupted use during power fluctuations or off-grid operations.
- Wide-angle backlit LCD display: 18-mm character height with contrast adjustment ensures legibility under variable ambient lighting conditions, including low-illumination production floors.
- Integrated functional modes: Tare, piece counting (with automatic average piece weight calculation), unit conversion (g, oz, ct, etc.), and preset calibration prompts compliant with internal quality protocols.
- Rugged ABS housing with stainless steel weighing pan (Φ118 mm): Resists chemical splashes and mechanical abrasion; pan geometry optimized for center-of-gravity stability and rapid settling time (<2 s).
Sample Compatibility & Compliance
The 100JC accommodates solid, granular, and powdered samples within standard laboratory containers (e.g., weighing boats, beakers, petri dishes). Its open-top shield configuration permits direct placement of moderately sized objects—ideal for component inspection, batch sampling, and pre-weighed kit assembly. While not certified for Class I or II metrological accreditation (e.g., OIML R76), the balance conforms to JJG 1036–2008 verification standards for non-automatic weighing instruments in China and supports traceable calibration via external Class M2 weights (recommended annually). It operates reliably within temperature ranges of 10–30 °C and relative humidity up to 80% RH (non-condensing), making it suitable for controlled manufacturing environments aligned with ISO 9001 and GMP Annex 11 documentation expectations.
Software & Data Management
The 100JC features RS-232 serial interface (standard) for bidirectional communication with PCs, LIMS, or ERP systems. Optional data logging software enables timestamped export of weight records—including tare events, count batches, and user-defined identifiers—to CSV or Excel-compatible formats. Audit trail functionality (via host-side application) supports GLP-compliant record retention, satisfying basic FDA 21 CFR Part 11 requirements when paired with electronic signature validation at the system level. No onboard memory or internal storage is provided; all data persistence relies on external host integration—a design choice prioritizing security, simplicity, and regulatory transparency.
Applications
- Industrial配料 verification: Confirming dosage consistency in pharmaceutical tablet coating, nutraceutical blending, and adhesive mixing processes.
- Production line counting: Rapid inventory reconciliation of screws, washers, PCB components, or medical disposables using piece-count mode.
- Educational laboratories: Teaching fundamental metrology concepts—including calibration hierarchy, uncertainty propagation, and environmental influence factors—in undergraduate chemistry and materials science curricula.
- Quality control checkpoints: In-process verification of filled packages, capsule weights, or reagent aliquots prior to final packaging.
- Maintenance and service workshops: Weighing replacement parts, lubricants, or calibration standards during equipment servicing procedures.
FAQ
What is the recommended calibration frequency for the 100JC Balance?
Calibration should be performed before first use, after relocation, following significant ambient temperature shifts (>5 °C), and at least once per shift in continuous production environments. External calibration using certified M2 weights is mandatory per JJG 1036–2008.
Does the 100JC support internal calibration?
No—it requires external calibration weights; no motorized or built-in calibration mechanism is included.
Can this balance be used in a fume hood?
Yes, provided the draft shield is fully assembled and airflow velocity inside the hood remains below 0.2 m/s at the pan level; excessive turbulence will degrade repeatability.
Is the RS-232 interface compatible with modern Windows/macOS systems?
Yes—when used with a USB-to-RS-232 adapter and standard terminal emulation software (e.g., PuTTY, Tera Term) or custom LIMS drivers.
What does “Φ118 mm” refer to in the specifications?
This denotes the diameter of the circular stainless steel weighing pan, ensuring compatibility with standard labware and optimal load distribution across the EMFC sensor.
