OHAUS T32XWZH Waterproof Weighing Indicator and Controller

Overview

The OHAUS T32XWZH is a rugged, industrial-grade weighing indicator and controller engineered for reliable operation in demanding environments where moisture, dust, or frequent washdowns are present. Designed around the principles of load cell signal conditioning and digital weight processing, the T32XWZH accepts analog inputs from platform scales, bench scales, or hopper load cells and converts them into stable, high-fidelity weight readings with certified resolution up to 20,000 divisions. Its core architecture integrates a precision 24-bit analog-to-digital converter (ADC), real-time digital filtering algorithms, and auto-zero tracking logic to ensure consistent repeatability and minimal drift under variable ambient conditions. Unlike general-purpose displays, the T32XWZH embeds deterministic firmware optimized for both static weighing and discrete piece-counting workflows—making it suitable for quality control stations, packaging lines, and warehouse receiving bays where regulatory traceability and operational uptime are critical.

Key Features

• IP65/NEMA 4X-rated stainless steel enclosure—resistant to water jets, dust ingress, and common cleaning agents used in food, pharmaceutical, and chemical handling facilities
• Dual power architecture: factory-calibrated rechargeable sealed lead-acid battery (58 h runtime) + universal AC adapter—enabling uninterrupted operation during power fluctuations or mobile deployment
• Backlit monochrome LCD with high-contrast character rendering—optimized for legibility under low-light or glare-prone industrial lighting
• Programmable weighing units (g, kg, oz, lb, lb:oz) and configurable counting modes—including average piece weight (APW) calculation with statistical validation per batch
• RS232 serial interface (standard, no optional modules required) supporting ASCII protocol for direct integration with PLCs, label printers, PCs, or MES systems
• 2-second stabilization time across full capacity range—achievable via adaptive damping algorithms that balance responsiveness and noise rejection
• Factory pre-calibrated with documented metrological traceability to national standards; supports user-initiated calibration using external test weights

Sample Compatibility & Compliance

The T32XWZH is compatible with any analog load cell-based scale system operating within standard 0–20 mV/V output range and compliant with OIML R76 or NIST Handbook 44 requirements for non-automatic weighing instruments. It does not support multi-interval or legal-for-trade certification in its base configuration; however, when paired with a verified scale platform and installed per manufacturer-specified mechanical mounting guidelines, it meets functional accuracy criteria for internal process control (IPC) applications. The device complies with IEC 61326-1 (EMC for industrial environments) and IEC 61000-4 series immunity testing. Its IP65 rating satisfies hygiene-critical sectors governed by FDA 21 CFR Part 11 (when used in conjunction with validated software workflows) and supports GMP/GLP documentation practices through audit-ready data export protocols.

Software & Data Management

While the T32XWZH operates as a standalone hardware indicator without embedded graphical software, its RS232 interface enables seamless integration into existing laboratory information management systems (LIMS), enterprise resource planning (ERP), or custom SCADA platforms. ASCII-formatted output includes timestamped weight values, unit identifiers, status flags (e.g., stable, overload, underload), and count mode metadata. Optional terminal emulation tools (e.g., PuTTY, Tera Term) allow real-time monitoring and manual data capture. For regulated environments, third-party middleware solutions can be configured to enforce 21 CFR Part 11-compliant electronic signatures, audit trails, and data archiving—provided the host system implements appropriate access controls and change management procedures.

Applications

• Food & beverage production: ingredient batching, fill-level verification, and in-line checkweighing prior to packaging
• Pharmaceutical manufacturing: raw material receipt inspection, container tare-and-fill operations, and component counting for kit assembly
• Logistics and distribution centers: parcel sorting verification, pallet load validation, and returnable asset tracking
• Chemical and polymer processing: catalyst dosing control, drum filling supervision, and intermediate product reconciliation
• Maintenance workshops: tool crib inventory management and consumable usage tracking via piece-count mode

FAQ

Is the T32XWZH certified for legal-for-trade use?
No—the T32XWZH is intended for internal process control and industrial monitoring. Legal-for-trade certification requires full system validation including scale platform, mounting hardware, and installation environment.
Can the device store weight data internally?
No—it lacks onboard memory or USB/SD card slots. Data persistence must be handled externally via connected host systems or printers.
What is the maximum cable length supported for RS232 communication?
Up to 15 meters under standard EIA-232 specifications; longer runs require active repeaters or conversion to RS485 via external adapters.
Does it support tare-on-demand or preset tare functions?
Yes—both manual tare and programmable preset tare values are supported, with password protection available for critical settings.
Is firmware upgrade capability available?
Firmware updates are performed exclusively by authorized OHAUS service centers using proprietary diagnostic tools; end users cannot modify firmware.