SHYP JA-B Series Precision Electronic Balance
| Brand | SHYP |
|---|---|
| Origin | Shanghai, China |
| Model | JA-B |
| Readability | 1 mg |
| Capacity Range | 100 g to 500 g |
| Pan Diameter | 80 mm |
| Dimensions (W×D×H) | 350 × 215 × 340 mm |
| Clear Height Under Pan | 240 mm |
| Interface | RS232C |
| Power Supply | External AC Adapter |
| Compliance | ISO 9001, GLP-compliant design |
| Key Features | Auto-calibration, overload protection, piece counting, percentage weighing, unit conversion, real-time error diagnostics |
Overview
The SHYP JA-B Series Precision Electronic Balance is an entry-level analytical balance engineered for laboratories requiring high repeatability, stable performance, and intuitive operation in routine mass measurement tasks. Based on electromagnetic force compensation (EMFC) transduction technology, the JA-B series delivers consistent 1 mg readability across its full capacity range—from 100 g to 500 g—without mechanical levers or optical encoders. This architecture eliminates hysteresis and drift associated with strain-gauge systems, ensuring long-term stability under ambient laboratory conditions. Designed for daily use in QC labs, educational institutions, and pharmaceutical pre-formulation workflows, the balance features a robust aluminum alloy housing, draft shield-compatible geometry, and thermal isolation via external power adapter—minimizing heat transfer from the power supply to the sensor assembly.
Key Features
- Electromagnetic force compensation (EMFC) sensor with built-in temperature compensation for enhanced linearity and zero stability
- Automatic internal calibration triggered by time interval, temperature shift (>1.5 °C), or user command—traceable to internal reference mass
- Real-time self-diagnostic system continuously monitors sensor status, load cell integrity, and environmental interference
- Overload protection up to 150% of nominal capacity with audible and visual alert; automatic recovery without recalibration
- External AC/DC power adapter reduces thermal loading on the balance base, improving short-term repeatability (≤0.3 mg standard deviation over 10 readings)
- RS232C serial interface compliant with EIA-232 standards, supporting bidirectional communication with LIMS, ERP, or custom data acquisition software
- Integrated application modes: piece counting (PCS), percentage weighing (%), unit conversion (g, oz, ct, dwt, grain), and net/gross/tare management
Sample Compatibility & Compliance
The JA-B series accommodates standard laboratory containers—including weighing boats, crucibles, and glass vials—within its 80 mm diameter stainless steel pan and 240 mm clearance height. Its open-frame design allows easy access for volumetric flasks and tall sample vessels. The balance meets ISO 9001 manufacturing quality requirements and incorporates design elements aligned with Good Laboratory Practice (GLP) documentation needs: timestamped weight output, operator ID field (via connected PC), and configurable print/log formats. While not certified to OIML R76 or NIST Handbook 44 for legal-for-trade applications, it satisfies internal calibration verification protocols per ASTM E898–22 and supports audit-ready data export when integrated with compliant software.
Software & Data Management
Data transmission occurs via ASCII-based RS232C protocol at 9600 baud, 8N1 configuration. No proprietary drivers are required; standard terminal emulators (e.g., PuTTY, Tera Term) or spreadsheet macros can capture live weight streams. When interfaced with validated laboratory software, the balance supports 21 CFR Part 11–compliant audit trails—including user login, calibration event logging, and weight timestamping—if the host system implements electronic signatures and data integrity controls. Optional CSV export enables traceable batch reporting for raw material receipt, formulation checks, or student lab records.
Applications
- Pharmaceutical: Excipient dispensing, capsule weight uniformity checks, and standard solution preparation (USP <41>)
- Chemistry Education: Stoichiometric calculations, molar mass determination, and gravimetric analysis instruction
- Food & Beverage QA: Ingredient batching, package fill verification, and moisture content pre-weighing
- Materials Science: Powder density estimation, catalyst loading, and composite resin mixing ratios
- Environmental Labs: Filter weighing for particulate matter (PM10/PM2.5) analysis per EPA Method 201A
FAQ
What calibration standards are recommended for periodic verification?
Use Class M2 or better certified weights traceable to NIST or BIPM, with uncertainty ≤1/3 of the balance’s readability (i.e., ≤0.33 mg). Calibration frequency should follow risk-based assessment per ISO/IEC 17025:2017 Clause 6.5.
Is the RS232C interface compatible with modern Windows/macOS systems?
Yes—when paired with a USB-to-RS232 adapter (FTDI chipset recommended), the interface functions reliably under Windows 10/11 and macOS Ventura+ using native serial port APIs.
Can the balance operate on battery power?
No—the JA-B series requires continuous AC input via the supplied external adapter; no internal battery option is available.
Does it support dynamic weighing or animal weighing mode?
No—this model lacks motion compensation algorithms or stabilization filters optimized for unstable loads; it is intended for static, settled samples only.
How is temperature drift mitigated during extended use?
The EMFC sensor includes dual-point thermal compensation, and the external power supply prevents self-heating of the base structure—reducing thermal gradient-induced zero drift to <0.5 mg over 4 hours at constant 23 °C ambient.
