Precisa XS4250C-SCS Economic Internal Calibration Electronic Balance

Overview

The Precisa XS4250C-SCS is an economic-grade internal calibration electronic balance engineered for routine laboratory and industrial weighing tasks requiring consistent accuracy, operational reliability, and cost-effective maintenance. Designed and manufactured in Switzerland, this balance employs electromagnetic force compensation (EMFC) technology—a high-stability transduction principle widely adopted in analytical and precision balances—to deliver repeatable mass measurements across its full 4250 g capacity. Its 10 mg readability meets the performance requirements of quality control labs, educational institutions, and production environments where GMP-aligned documentation and traceable calibration are essential but full ISO/IEC 17025-certified external calibration is not mandated at every use cycle. The integrated internal calibration system—activated via front-panel command—eliminates dependency on external calibration weights, reducing long-term operational costs and minimizing procedural variability introduced by manual weight handling.

Key Features

• Internal self-calibration function with user-initiated activation, compliant with ISO 9001 and GLP documentation practices;
• Optional fluorescent display module ensuring high-contrast, wide-angle readability under low-light, backlight-limited, or high-ambient-glare conditions;
• Three-stage stability adjustment (Fast/Medium/Slow), allowing optimization of response time versus noise rejection based on environmental vibration or air current conditions;
• Auto-power-on upon mains restoration—critical for uninterrupted operation in facilities with intermittent power supply;
• Programmable auto-off delay (configurable in minutes), conserving energy without compromising workflow continuity;
• Robust chromium-nickel steel weighing pan (170 × 170 mm) resistant to corrosion, thermal drift, and mechanical abrasion;
• Wide operating temperature range (0–40 °C) and low sensitivity drift (±2 ppm/°C between 10–30 °C), supporting stable performance in non-climate-controlled laboratories or production floors.

Sample Compatibility & Compliance

The XS4250C-SCS accommodates a broad range of sample types—including powders, granules, liquids in containers, and solid components—within its 4250 g tare capacity. Its 170 × 170 mm pan provides ample surface area for large or irregularly shaped items while maintaining center-of-gravity stability. The balance complies with international electromagnetic compatibility standards (EN 61326-1) and safety directives (EN 61010-1). While not certified for legal-for-trade applications (e.g., OIML R76 or NTEP), it fulfills metrological requirements for in-house process control, formulation checks, and preparatory weighing aligned with ISO/IEC 17025 clause 6.4.1 (equipment suitability) and USP “Balances” when operated within specified environmental and procedural constraints.

Software & Data Management

This model supports RS232 serial output (standard) for direct connection to PCs, printers, or LIMS systems. Data transmission follows standard ASCII protocol with configurable baud rates (up to 115.2 kbps), enabling seamless integration into automated reporting workflows. Optional data logging software (sold separately) permits timestamped weight capture, statistical analysis (mean, SD, CV%), and export to CSV or Excel formats. Audit trail functionality—including operator ID tagging and calibration event logging—is available when paired with validated third-party laboratory informatics platforms compliant with FDA 21 CFR Part 11 requirements. All firmware updates are delivered via Precisa’s secure technical support portal, ensuring continued alignment with evolving regulatory expectations.

Applications

• Raw material receipt inspection and batch release testing in pharmaceutical and chemical manufacturing;
• Weighing of reagents, standards, and reference materials in QC/QA laboratories adhering to ISO/IEC 17025;
• Formulation and compounding in food, cosmetics, and agrochemical industries;
• Student experiments and teaching demonstrations in university chemistry and engineering labs;
• Inventory management and packaging line verification where repeatability > reproducibility is prioritized;
• Pre-weighing for subsequent analysis on higher-tier instruments (e.g., HPLC sample prep, ICP-MS digestion).

FAQ

Does the XS4250C-SCS meet ISO/IEC 17025 requirements for balance verification?
Yes—when used with documented internal calibration procedures, environmental monitoring, and periodic verification using traceable standards, it satisfies clause 6.4.1 for equipment fitness-for-purpose.
Can the fluorescent display be retrofitted to an existing LCD unit?
No—the display module is factory-configured; fluorescent option must be specified at time of order.
What is the recommended recalibration frequency for internal calibration?
Precisa recommends initiating internal calibration after power-up, following significant ambient temperature shifts (>5 °C), or at least once per shift in continuous-use environments.
Is the balance compatible with Windows 11 and macOS Ventura or later?
Yes—via standard virtual COM port drivers; no proprietary software installation required for basic data streaming.
Does the 2-year warranty cover calibration drift beyond specification?
The warranty covers defects in materials and workmanship; out-of-specification performance requires diagnostic service and may indicate environmental or mechanical factors outside warranty scope.