Q-LAB V-2156-X Black Panel Temperature Sensor for QUV and Q-SUN Weathering Test Chambers

Overview

The Q-LAB V-2156-X is a precision-engineered black panel temperature (BPT) sensor designed exclusively for calibration verification and replacement in Q-LAB’s QUV ultraviolet (UV) and Q-SUN xenon arc accelerated weathering test chambers. Unlike generic thermistors or RTDs, the V-2156-X replicates the thermal mass, surface emissivity, and geometric configuration of the standard black panel sensor used in QUV and Q-SUN systems—ensuring metrological equivalence during calibration checks and sensor replacement. It operates on the principle of direct-contact thermal equilibrium measurement: mounted flush to a standardized blackened metal plate exposed to the same radiant energy field as test specimens, it provides a repeatable, physically representative indicator of specimen surface temperature under controlled UV or full-spectrum xenon irradiation. This parameter is critical for compliance with ASTM G154, ISO 4892-3, and IEC 61215 standards, where BPT is mandated as the primary thermal control variable in non-ambient UV exposure protocols.

Key Features

• Exact form-fit replacement for original QUV and Q-SUN black panel temperature sensors—no mechanical or electrical modification required.
• Pre-calibrated at Q-LAB’s A2LA-accredited ISO/IEC 17025 laboratory; certified traceability to NIST Standard Reference Materials (SRMs).
• Stainless steel housing with matte-black anodized surface (emissivity ≥ 0.95) optimized for uniform absorption across UV-A (315–400 nm), UV-B (280–315 nm), and visible spectral bands.
• Integrated 10 kΩ NTC thermistor with ±0.3 °C accuracy over the operational range of 25–110 °C (typical BPT range in QUV/Q-SUN cycles).
• Designed for long-term stability: drift < ±0.15 °C per year under continuous exposure conditions when installed per Q-LAB Technical Bulletin LW-6008.
• Compatible with all QUV models (including UVA-340, UVB-313, and UVA-351 lamps) and Q-SUN series (Xe-1, Xe-3, B02) using standard black panel configurations.

Sample Compatibility & Compliance

The V-2156-X is not a standalone measurement instrument but a system-integrated component essential for maintaining regulatory conformance in materials durability testing. Its use supports adherence to ASTM D4329 (plastics UV exposure), ASTM D4587 (coatings UV condensation), ISO 4892-2 (xenon arc), and IEC 61215-2 (photovoltaic module qualification). When deployed in conjunction with Q-LAB’s CT-202 series calibration thermometers (CT-202/BP or CT-202/IBP), it enables user-performed verification per ASTM E2302 and ISO/IEC 17025 Clause 6.6. All calibration records—including those generated during annual CT-202 recalibration (service code CT-202/RECAL)—include full uncertainty budgets and are retained for GLP/GMP audit readiness.

Software & Data Management

While the V-2156-X itself contains no embedded firmware or digital interface, its metrological integrity directly impacts data validity in Q-LAB’s SOLAR-EYE™ and WEATHEROMETER™ software platforms. These systems log BPT readings in real time alongside irradiance, humidity, and chamber setpoints; deviations exceeding ±0.5 °C from baseline V-2156-X reference values trigger automated alert flags in compliance reports. Raw calibration certificates (LW-6008-compliant) are issued as PDFs with embedded digital signatures and machine-readable metadata, supporting integration into LIMS environments via standard CSV or XML export protocols. Full audit trails—including sensor installation date, last verification timestamp, and associated CT-202 recalibration ID—are maintained within Q-LAB’s proprietary calibration management database.

Applications

• Verification and replacement of degraded or drifted black panel sensors in QUV UV aging chambers during routine maintenance intervals (recommended every 12–18 months).
• Field validation of thermal uniformity across multi-zone Q-SUN Xe-3 test chambers using paired V-2156-X units at defined spatial locations.
• Supporting ISO 17025 internal audits by providing documented, NIST-traceable sensor substitution without requiring full chamber requalification.
• Enabling comparative studies between UV and xenon exposure protocols where BPT alignment must be held constant across instrument platforms.
• Facilitating root-cause analysis of coating delamination or polymer embrittlement failures linked to uncontrolled thermal excursions.

FAQ

Is the V-2156-X a calibrated instrument out-of-the-box?
Yes—each unit ships with a factory calibration certificate compliant with ISO/IEC 17025, including uncertainty values, environmental conditions during calibration, and NIST traceability documentation.
Can I use the V-2156-X to calibrate my Q-SUN Xe-1 chamber’s ambient air temperature sensor?
No—the V-2156-X measures black panel temperature only. For ambient air temperature sensors (e.g., Xe-1 optional indoor air probe), Q-LAB recommends using a separate NIST-traceable dry-well calibrator or reference thermometer meeting ASTM E74 requirements.
Does the V-2156-X require periodic recalibration after installation?
No—unlike portable reference thermometers (e.g., CT-202), the V-2156-X is a fixed-installation sensor intended for functional replacement. Its stability is verified annually via comparison against a CT-202 during routine chamber qualification.
What is the expected service life under continuous QUV operation?
Based on accelerated aging data, median functional life exceeds 36 months at 60 °C BPT and 0.89 W/m² @ 340 nm irradiance, assuming proper lamp alignment and condensation cycle integrity.
Are spare V-2156-X units supplied with installation hardware and torque specifications?
Yes—each package includes stainless steel mounting screws, thermal interface compound (Q-LAB Part No. X-10230), and a torque specification sheet aligned with Q-LAB Technical Bulletin TB-004.