Traceable® VWRI620-1980 Platinum RTD Ultra-High-Precision Temperature Meter

Overview

The Traceable® VWRI620-1980 Platinum RTD Ultra-High-Precision Temperature Meter is an industrial-grade, single-channel digital temperature indicator engineered for metrologically rigorous environments where traceability, stability, and repeatability are non-negotiable. Built around a high-stability platinum resistance thermometer (RTD) sensor—either Pt100 or Pt1000 compliant with IEC 60751 Class A or AA tolerances—the instrument leverages the fundamental physical property of platinum’s predictable, monotonic resistivity–temperature relationship. Its measurement architecture employs precision four-wire (Kelvin) sensing to eliminate lead resistance error, enabling sub-millidegree resolution and certified accuracy of ±0.05 °C within the critical –80 °C to +290 °C range. Designed for continuous operation in laboratories, cleanrooms, pharmaceutical manufacturing suites, and calibration labs, the VWRI620-1980 delivers long-term drift performance suitable for GLP/GMP-compliant thermal validation and routine reference-standard monitoring.

Key Features

• 6-digit LCD display with 10.2 mm high digits for unambiguous readout under low-light or glove-compatible conditions
• User-selectable resolution from 0.1 °C down to 0.0001 °C via dedicated front-panel key—enabling application-specific precision without hardware modification
• Internal data logger captures hourly minimum and maximum temperature values over a rolling 24-hour window, stored in non-volatile memory without external software
• High-speed sampling engine updates readings three times per second, ensuring dynamic response across liquid, gaseous, semi-solid, and ambient air media
• Ruggedized housing (89 × 32 × 140 mm, 230 g) with IP54-rated enclosure for resistance to dust ingress and incidental splashing
• NIST-traceable calibration certificate supplied with each unit, documenting as-found/as-left data, uncertainty budgets, and compliance with ISO/IEC 17025 requirements

Sample Compatibility & Compliance

The VWRI620-1980 supports two primary probe configurations: the 37804-06 stainless-steel sheathed probe (7″ length, 0.13″ diameter, 6′ shielded cable) optimized for immersion in baths, reactors, and ovens; and the 37804-07 PTFE-insulated bullet probe (1″ stem, ¼” diameter, 10′ cable) suited for surface contact, airflow profiling, and sterile-zone monitoring. Both probes utilize 316 stainless-steel housings and platinum sensing elements conforming to ASTM E1137/E2358 and IEC 60751. The instrument meets CE marking requirements for electromagnetic compatibility (EN 61326-1) and safety (EN 61010-1). Its documented measurement uncertainty and traceable calibration support adherence to FDA 21 CFR Part 11 (when paired with optional 90080-21 Data Acquisition Software), USP , and ISO 17025 internal audit protocols.

Software & Data Management

When connected via its built-in RS232 or USB interface, the VWRI620-1980 integrates seamlessly with Avantor’s 90080-21 Data Acquisition System Software—enabling real-time streaming, time-stamped logging, statistical process control (SPC) charting, and export to CSV or Excel formats. The software supports audit-trail generation, user access levels, electronic signatures, and automated report templates compliant with GxP data integrity principles. For standalone use, the meter’s internal memory retains min/max history independently of PC connectivity. Optional 90225-22 universal AC adapter eliminates battery dependency during extended benchtop operation.

Applications

• Calibration laboratory reference standard verification and inter-laboratory comparison studies
• Thermal mapping of autoclaves, stability chambers, lyophilizers, and environmental test chambers
• Validation of temperature-sensitive processes in biopharmaceutical manufacturing (e.g., cell culture, purification, fill-finish)
• Material testing per ASTM D3418 (melting point), ASTM D6604 (glass transition), and ISO 11357 series
• Research-grade cryogenic and high-temperature experiments requiring stable, low-drift monitoring
• Quality control release testing where temperature excursions must be quantified to ≤0.05 °C tolerance

FAQ

What calibration standards does the Traceable® certificate reference?
The included certificate documents traceability to NIST Standard Reference Materials (SRMs) through an ISO/IEC 17025-accredited calibration laboratory, with full uncertainty budgeting per GUM (Guide to the Expression of Uncertainty in Measurement).
Can the VWRI620-1980 be used in hazardous locations?
No—it is not intrinsically safe or explosion-proof rated. Use only in general-purpose industrial or laboratory environments meeting EN 61010-1 safety class II requirements.
Is probe interchangeability supported without recalibration?
Yes—each probe (37804-06, 37804-07, or replacement units 37804-08/37804-09) is individually calibrated and labeled with its unique correction coefficients; the meter auto-applies compensation when the correct probe ID is selected.
How is long-term stability verified?
Avantor recommends annual recalibration against a primary standard; drift rates are typically <±0.02 °C/year under controlled storage and proper handling per manufacturer guidelines.
Does the device support custom temperature units or offset adjustments?
No—it displays exclusively in °C and °F (user-switchable), with no programmable offset or linearization—ensuring metrological integrity and eliminating operator-induced bias.