Traceable VWRI620-2486 Remote Alarm Temperature & Humidity Monitor

Overview

The Traceable^® VWRI620-2486 Remote Alarm Temperature & Humidity Monitor is an independently calibrated environmental monitoring instrument engineered for continuous, reliable measurement in controlled laboratory and storage environments. It operates on a dual-sensor architecture: a local ambient sensor housed in the main unit measures the immediate surroundings, while a remotely mounted sensor—connected via a 2.13-meter (7-foot) shielded cable—enables spatially separated monitoring of critical zones such as fume hood interiors, chemical storage cabinets, environmental chambers, or archival storage spaces. The device employs capacitive polymer humidity sensing and precision thermistor-based temperature detection, delivering traceable measurements aligned with NIST-traceable calibration standards. Its primary function is passive environmental surveillance with active threshold-based alarm capability—designed not for process control but for compliance-driven condition awareness in GLP, GMP, and ISO 17025-aligned facilities.

Key Features

• Independent dual-point monitoring: Local ambient unit + remote probe (7 ft cable) for spatial separation of measurement and display locations
• User-programmable high/low alarms for both temperature and relative humidity, adjustable in 1°C and 1% RH increments
• Min/Max memory retention with hold function—records and displays extreme values observed since last reset
• Integrated flip-stand and wall-mount bracket for flexible placement in labs, cleanrooms, or storage areas
• Pre-installed CR2032 coin-cell battery (typical life: 12–18 months under normal use)
• Traceable^® Certificate of Calibration included—documenting as-found/as-left data, uncertainty values, and NIST-traceable reference standards used
• Compact, low-profile housing with LCD backlight for readability in low-light conditions (e.g., cold rooms or darkened storage cabinets)

Sample Compatibility & Compliance

This monitor is intended for non-invasive, ambient air monitoring only—not for immersion, pressurized, or corrosive gas environments. It complies with general-purpose environmental monitoring requirements under ISO 14644-1 (cleanroom classification support), ASTM E145 (standard specification for gravity-convection and forced-ventilation ovens), and USP / environmental verification protocols. While not intrinsically rated for hazardous locations, its design meets typical electrical safety requirements for Class I, Division 2 laboratory equipment per UL 61010-1. The Traceable^® certificate satisfies internal audit and external inspection needs for documented metrological traceability, supporting FDA 21 CFR Part 11 readiness when paired with appropriate procedural controls (e.g., defined calibration intervals, logbook entries, and change management).

Software & Data Management

The VWRI620-2486 operates as a standalone, microcontroller-based instrument with no onboard data logging or PC interface. All measurement data remains visible only on the LCD display; no serial, USB, or Bluetooth connectivity is provided. For regulated environments requiring electronic records, users must implement manual transcription into validated electronic lab notebooks (ELNs) or environmental monitoring systems (EMS). The device supports periodic verification against secondary reference standards—recommended at least quarterly in critical applications—and its calibration certificate includes full uncertainty budgeting per ISO/IEC 17025 guidelines. Traceable^® certificates are archived digitally upon request and may be integrated into enterprise calibration management systems via PDF import.

Applications

• Verification of temperature/humidity stability inside chemical storage cabinets and flammable liquid safety cabinets
• Continuous monitoring of fume hood sash zones to confirm safe operating conditions during volatile substance handling
• Baseline environmental logging in archives, museums, and pharmaceutical stability storage rooms (25°C/60% RH, 30°C/70% RH, etc.)
• Classroom and teaching lab demonstrations of environmental parameter interdependence and sensor response dynamics
• Supporting ISO 9001 clause 7.1.5 (monitoring and measuring resources) through documented, traceable instrumentation
• Pre-qualification of incubators, stability chambers, and cold rooms prior to formal qualification protocols (IQ/OQ)

FAQ

Is the VWRI620-2486 suitable for use inside a refrigerated or freezer environment?

No—the specified operating temperature range is 0.0–60.0°C. Prolonged exposure below 0°C may cause condensation-induced drift or sensor hysteresis; it is not rated for sub-zero operation.
Can the alarm output trigger an external device (e.g., relay or buzzer)?

No—alarms are visual (flashing LCD icon) and audible (built-in piezo beeper); there is no dry-contact or voltage-output interface.
How often should this unit be recalibrated?

Annual recalibration is recommended for routine use; in critical GxP environments, semi-annual verification against a certified reference standard is advised.
Does the Traceable^® certificate meet FDA 21 CFR Part 11 requirements?

The certificate itself is compliant as a static, auditable record—but Part 11 compliance depends on your organization’s procedural controls (electronic signature policy, audit trail maintenance, system validation), not the instrument.
Can the remote sensor be replaced independently if damaged?

Yes—part number VWRI620-2487 is the replacement remote sensor assembly (including 7-ft cable and probe housing), sold separately.