OHAUS TCS-CKW3R55 Checkweighing Bench Scale

Overview

The OHAUS TCS-CKW3R55 Checkweighing Bench Scale is an industrial-grade, stainless-steel bench scale engineered for high-reliability dynamic weight verification in regulated production environments. Designed around precision electromagnetic force compensation technology with a hermetically sealed IP67-rated stainless-steel load cell, the scale delivers stable, drift-resistant measurements under continuous operation. Its primary function is real-time checkweighing—comparing individual item weights against user-defined upper and lower tolerance limits—to support compliance-driven quality control workflows in food processing, pharmaceutical packaging, and contract manufacturing. The device operates within ISO/IEC 17025-aligned metrological frameworks and supports traceable process validation when integrated into GLP/GMP documentation systems.

Key Features

• Stainless-steel enclosure rated IP66 for resistance to high-pressure washdown and corrosive cleaning agents—validated for use in USDA-inspected meat/poultry facilities and NSF-certified food contact zones.
• 24-segment tri-color LED indicator (red/amber/green) provides immediate visual pass/fail feedback across a configurable weight deviation range; audible alarm (buzzer) can be enabled per user-defined threshold conditions.
• One-touch checkweighing setup allows rapid configuration of target weight, tolerance band (absolute or percentage-based), and operating mode—eliminating multi-step menu navigation during line changeovers.
• Dual-mode weighing architecture supports standard checkweighing, negative-weight offset verification (e.g., fill-level validation after dispensing), and zero-point reference checks for tare stability monitoring.
• Integrated statistical engine computes real-time batch metrics—including item count, cumulative gross mass, arithmetic mean, and sample standard deviation—enabling SPC charting without external software.
• Robust 20-entry product library stores item-specific parameters: product ID, preset tare value, nominal weight, upper/lower limits, and associated tolerance logic—retained through power cycles.

Sample Compatibility & Compliance

The TCS-CKW3R55 accommodates items ranging from small packaged goods (e.g., snack bars, blister packs) to medium-sized containers (up to 30 kg capacity variants). Its low-profile platform design minimizes height differentials for seamless integration with conveyor-fed inspection stations. All wetted surfaces comply with FDA 21 CFR §177.2600 for indirect food contact polymers. Certification to NSF/ANSI Standard 18 and USDA-FSIS Directive 7120.1 confirms suitability for raw and ready-to-eat food processing lines. The scale meets EN 45501:2015 accuracy class III requirements for non-automatic weighing instruments used in commercial applications.

Software & Data Management

Data export is supported via RS-232 serial interface (ASCII protocol) for direct integration with MES, SCADA, or LIMS platforms. Optional USB or Ethernet modules enable TCP/IP communication for centralized calibration logging and remote firmware updates. Audit trail functionality records all critical events—including weight capture timestamps, operator ID (via optional keypad login), parameter modifications, and calibration actions—in accordance with FDA 21 CFR Part 11 requirements when paired with validated host software. Raw weight data files are generated in CSV format with ISO 8601 timestamping and UTC synchronization capability.

Applications

• Food & Beverage: Final package weight verification pre-case packing; portion control validation for frozen meals, dairy products, and confectionery.
• Pharmaceuticals: Secondary packaging weight checks for cartons containing vials, syringes, or blister strips—supporting USP and environmental control documentation.
• Contract Manufacturing: In-line verification of assembled components prior to kitting; tolerance-based acceptance testing for OEM subassemblies.
• Logistics & Distribution: Pallet load verification against shipping manifests; dimensional weight cross-checking for carrier compliance.
• Quality Assurance Labs: Batch homogeneity assessment using statistical weight variance analysis per ISO 2859-1 sampling plans.

FAQ

What certifications does the TCS-CKW3R55 hold for food industry use?

NSF/ANSI Standard 18, USDA-FSIS Directive 7120.1, and HACCP-aligned design validation—covering structural integrity, material compatibility, and cleanability.
Can the scale interface with ERP or MES systems?

Yes, via RS-232 (standard), with optional USB or Ethernet modules supporting Modbus RTU/TCP and custom ASCII command sets.
Is audit trail functionality compliant with FDA 21 CFR Part 11?

When deployed with validated host software and appropriate access controls, the scale’s event logging meets electronic record and signature requirements.
How many product configurations can be stored internally?

Up to 20 distinct product profiles, each retaining tare value, nominal weight, and dual-limit thresholds.
Does the LED indicator support custom color mapping?

No—the red/amber/green segments follow fixed deviation logic: red = outside limits, amber = near limit, green = within tolerance.