A&D EK-i Series Precision Balance

Overview

The A&D EK-i Series Precision Balance is a compact, high-reliability weighing platform engineered for routine quality control, piece counting, and comparative weight analysis in diverse operational environments—including laboratories, production floors, cleanrooms, and field-based inspection stations. Based on electromagnetic force compensation (EMFC) transduction technology, the EK-i series delivers stable, drift-resistant measurements under variable ambient conditions. Its lightweight, space-efficient chassis integrates a robust mechanical design with an optimized load cell architecture to ensure long-term repeatability and minimal thermal sensitivity. Unlike general-purpose scales, the EK-i balances are calibrated to meet international metrological standards and support traceable documentation workflows required in regulated industries.

Key Features

• Backlit high-contrast LCD display with wide viewing angle—enables clear readability in low-light or high-glare settings, including outdoor or dimly lit industrial zones.
• Internal resolution of up to 1/60,000—supports precise relative weight evaluation and enhances counting accuracy across heterogeneous batches.
• ACAI (Automatic Counting Accuracy Improvement) function—dynamically adjusts sampling parameters based on sample weight distribution to reduce statistical error in piece-counting applications.
• Multi-unit weighing capability—nine selectable units (g, kg, oz, lb, ct, dwt, gn, momme, tola) accommodate global material specifications and regulatory reporting formats.
• Weight comparison mode—with configurable upper/lower limits and optional relay output module for pass/fail signaling to PLCs or external alarm systems.
• Full digital span and zero calibration—performed directly via keypad without external weights, streamlining routine maintenance and reducing downtime.
• Auto-power-off with adjustable timeout—conserves energy during intermittent use; compatible with optional rechargeable lithium-ion battery pack for cordless mobility.
• Overload protection circuitry—prevents sensor damage from accidental overloading up to 150% of rated capacity.

Sample Compatibility & Compliance

The EK-i series accommodates a broad spectrum of sample types—from small electronic components and pharmaceutical tablets to bulk raw materials and machined parts—without requiring specialized pans or fixtures. All models comply with ISO 9001 quality management requirements and support Good Laboratory Practice (GLP) and Good Manufacturing Practice (GMP) documentation protocols. Internal memory stores calibration history, operator ID (when used with Win-CT), and timestamped measurement logs—facilitating audit readiness per FDA 21 CFR Part 11 when paired with validated software configurations. The balance’s mechanical construction meets IP42-rated ingress protection for resistance against dust and incidental splashes, making it suitable for semi-controlled industrial environments.

Software & Data Management

Standard RS-232C serial interface enables seamless integration with PCs, label printers, or automated QA systems. A&D’s Win-CT software provides bidirectional communication for remote control of zero tracking, unit selection, tare management, and real-time data streaming. Measurement records can be exported in CSV or TXT format for downstream statistical process control (SPC) analysis or LIMS ingestion. Win-CT supports user-defined templates for batch reports, includes built-in validation prompts for calibration events, and generates GLP-compliant printouts with instrument ID, date/time stamp, and operator signature field. Optional USB-to-RS232 adapters allow compatibility with modern laptops lacking legacy serial ports.

Applications

• Quality assurance labs performing incoming material verification, finished goods release testing, and stability study weight checks.
• Electronics manufacturing—counting SMD components, verifying reel weights, and monitoring solder paste dispensing consistency.
• Pharmaceutical production—tablet/capsule counting, excipient blending verification, and packaging line weight checks per USP <41>.
• Mechanical workshops—tool inventory management, fastener quantity verification, and casting weight validation prior to machining.
• Educational institutions—teaching metrology fundamentals, uncertainty analysis, and statistical sampling techniques.
• Field service teams—portable verification of calibration weights, field instrument checks, and mobile lab deployments.

FAQ

Does the EK-i series support internal calibration?
No—internal motorized calibration is not included. Calibration requires external certified weights; however, full digital span and zero adjustment is supported via front-panel controls.
Can the balance store multiple user profiles?
User identification is managed externally via Win-CT software; the balance itself does not retain user-specific settings or passwords.
Is the RS-232 interface opto-isolated?
The standard RS-232C port is electrically isolated to minimize ground-loop interference in industrial settings.
What is the warm-up time required for optimal accuracy?
Stabilization to ±0.01 g repeatability is achieved within 30 minutes after power-on at ambient temperatures between 10–30 °C.
Are replacement batteries available for the optional Li-ion pack?
Yes—A&D supplies certified replacement battery modules (part no. BP-EKi) with integrated charge management and safety cutoff circuitry.