A&D SK-1000WP IP65 Waterproof Precision Benchtop Balance

Overview

The A&D SK-1000WP is a high-reliability, IP65-rated waterproof precision benchtop balance engineered for demanding industrial, pharmaceutical, food processing, and laboratory environments where moisture, dust, chemical splashes, or frequent cleaning protocols are routine. Based on electromagnetic force compensation (EMFC) transduction technology, the SK-1000WP delivers stable, repeatable mass measurements across its full 1000 g capacity range with 0.5 g readability. Its robust stainless steel arched housing and integrated weighing pan are fully sealed to prevent ingress of particulates or liquids—enabling safe operation in wet zones, production floors, cleanrooms with periodic disinfection cycles, and QC labs adhering to hygiene-critical workflows. Unlike standard balances requiring protective enclosures or relocation during sanitation, the SK-1000WP is designed for direct integration into washdown workflows without compromising metrological integrity.

Key Features

• IP65-rated enclosure: Fully protected against low-pressure water jets (6.3 mm nozzle) and total dust ingress—validated per IEC 60529 standards.
• Stainless steel arched housing and weighing pan: Corrosion-resistant, non-porous surface geometry facilitates rapid wipe-down, steam sterilization compatibility, and compliance with FDA 21 CFR Part 11–aligned hygiene documentation requirements.
• High-contrast LCD display with real-time stability indicator: Ensures unambiguous reading under variable lighting conditions; visual “stable” icon confirms measurement convergence before data capture.
• Dedicated power and tare keys: Physically separated button layout minimizes accidental zeroing or shutdown during active weighing sequences—critical for batch record integrity in GMP-regulated processes.
• Auto-power-off function: Configurable timeout (default: 30 min) extends battery life to ~200 hours using six D-cell alkaline batteries; optional AC adapter enables continuous operation during extended shifts.
• External calibration capability: Supports traceable adjustment using certified weights conforming to OIML R111 or ASTM E617 Class M2/M3 standards—facilitating internal audit readiness and ISO/IEC 17025-compliant calibration intervals.

Sample Compatibility & Compliance

The SK-1000WP accommodates a wide range of sample types—including bulk powders, packaged goods, liquid containers, and irregularly shaped components—without requiring secondary containment in most applications. Its open-top design and low-profile pan support easy loading/unloading in glovebox or laminar flow hood installations. The balance meets essential regulatory expectations for instruments used in quality control laboratories operating under Good Manufacturing Practice (GMP), Good Laboratory Practice (GLP), and Hazard Analysis Critical Control Point (HACCP) frameworks. While not intrinsically rated for explosive atmospheres, its IP65 certification aligns with common facility specifications for Zone 22 (dust) and non-hazardous wet locations per IEC 60079-0. All firmware operations retain audit-trail-ready timestamps for calibration events, tare actions, and unit changes—supporting 21 CFR Part 11 electronic record requirements when paired with compliant data logging software.

Software & Data Management

The SK-1000WP features an RS-232 serial interface (standard) for seamless integration with LIMS, MES, or custom QC databases. ASCII-based output includes weight value, unit code (g), stability flag, and timestamp—enabling deterministic parsing without proprietary drivers. Optional Windows-compatible communication software (A&D WinCT) provides configurable data logging, statistical process control (SPC) charting, and export to CSV/Excel formats. All transmitted records preserve metrological context—including calibration date, operator ID (via keyboard input), and environmental condition flags (e.g., “low battery” or “unstable reading”)—to satisfy ALCOA+ data integrity principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).

Applications

• Pharmaceutical manufacturing: Weighing excipients, APIs, and final dosage forms in humidified cleanrooms (ISO Class 7–8) with daily ethanol/water wipe-downs.
• Food & beverage production: In-line checkweighing of filled pouches, jars, and trays on wet packaging lines; allergen segregation verification via mass-based lot reconciliation.
• Chemical formulation labs: Handling hygroscopic or solvent-wet samples without desiccator transfer delays.
• Veterinary clinics & feed mills: Rapid, sanitary weighing of animal feed additives, premixes, and compounded medications subject to USDA FSIS sanitation protocols.
• Educational laboratories: Durable platform for student experiments involving aqueous solutions, soil moisture analysis, or corrosion studies where spill resistance is mandatory.

FAQ

What does IP65 protection mean for daily operation?
IP65 certifies total dust-tightness and resistance to water projected from a 6.3 mm nozzle at 30 kPa pressure from any direction—making the SK-1000WP suitable for rinse-down procedures using low-pressure hoses or spray bottles.
Is external calibration sufficient for ISO/IEC 17025 accreditation?
Yes—provided calibrated reference weights traceable to national metrology institutes (e.g., NIST, NPL) are used, and calibration intervals, environmental conditions, and uncertainty budgets are formally documented per Clause 6.5 of ISO/IEC 17025:2017.
Can the balance be used with an AC adapter?
An optional AC adapter (model AD-8955) is available; it eliminates battery dependency and supports uninterrupted operation during long-duration batch releases or automated data acquisition cycles.
How is measurement stability determined and displayed?
Internal digital filtering evaluates signal variance over three consecutive 100-ms sampling windows; stability is confirmed only when deviation remains within ±0.5 g for ≥2 seconds—indicated by a solid “STABLE” icon on the LCD.
Does the SK-1000WP support unit conversion?
Yes—it offers selectable units including grams (g), kilograms (kg), ounces (oz), pounds (lb), and carats (ct), all referenced to the same calibrated mass standard—ensuring consistency across reporting formats without recalibration.