HunterLab SpectraTrend HT Accessories Kit
| Brand | HunterLab |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SpectraTrend HT Accessories |
| Product Type | Spectrophotometric Color Measurement System |
| Instrument Type | In-Line |
| Optical Geometry | 0/45° Integrating Sphere |
| Light Source | Full-Spectrum LED Array |
| Spectral Range | 400–700 nm |
| Repeatability | ΔE*ab ≤ 0.03 |
Overview
The HunterLab SpectraTrend HT Accessories Kit is a purpose-engineered suite of industrial-grade hardware components designed to extend the operational integrity, environmental resilience, and process integration capability of the SpectraTrend HT in-line spectrophotometer. As a core component of HunterLab’s continuous color monitoring platform, this accessories package enables robust deployment in demanding manufacturing environments—including food processing lines, pharmaceutical cleanrooms, and high-temperature polymer extrusion zones—where thermal stability, contamination control, and real-time feedback are mission-critical. The system operates on the principle of 0/45° geometry spectrophotometry, utilizing a full-spectrum LED array (400–700 nm) and an integrating sphere to deliver highly reproducible color data (CIE L*a*b*, ΔE*ab) with repeatability ≤ 0.03 ΔE*ab under controlled conditions. Unlike benchtop colorimeters, the SpectraTrend HT and its accessories are engineered for permanent installation directly into production conveyors or process streams, supporting ASTM D2244, ISO 11664, and USP compliant color verification protocols.
Key Features
- Tri-color status indicator (green/amber/red LEDs) providing immediate visual feedback on color deviation relative to user-defined tolerance bands—enabling rapid operator intervention without software access.
- Manual calibration box with precision-matched black, white, and verification ceramic tiles; slide-actuated design ensures repeatable positioning and traceable calibration history per GLP requirements.
- Isolated 4-channel 4–20 mA analog output module, each channel independently configured for L*, a*, b*, or ΔE*ab signals—designed for direct interface with PLCs, SCADA systems, or DCS controllers meeting IEC 61000-4 immunity standards.
- ST3 Positive-Pressure Air Hood: aluminum housing with integrated mounting plate and hardware; delivers filtered ambient air at positive pressure to protect optics from dust, moisture, and process exhaust in ambient temperatures up to 75°C.
- ST3 Vortex Cooler Enclosure: stainless-steel enclosure incorporating a vortex tube cooling system; maintains sensor head temperature below 40°C in ambient environments up to 80°C when supplied with ≥60 psi clean, oil-free plant air.
- ST3 SS Sensor Housing (non-vortex): fully welded 316L stainless-steel enclosure rated for IP65 ingress protection; optimized for hygienic applications in food, dairy, and biopharma where surface finish (Ra ≤ 0.8 µm), clean-in-place (CIP) compatibility, and non-cooling operation (<50°C ambient) are required.
- ST3 SS Sensor Housing (with vortex): identical hygienic construction but integrated with vortex cooling; certified for use in sterile processing zones requiring both material compatibility and active thermal management.
Sample Compatibility & Compliance
The SpectraTrend HT Accessories Kit supports continuous measurement of opaque solids, translucent films, granular blends, and liquid-filled containers moving at line speeds up to 3 m/s. All enclosures comply with FDA 21 CFR Part 11 Annex 11 requirements for electronic records and signatures when paired with HunterLab’s EasyMatch QC software. Stainless-steel housings meet 3-A Sanitary Standards 3-A SSI 03-08 and EHEDG Doc. 8.0 for food contact surfaces. The 0/45° optical configuration conforms to CIE Publication No. 15:2018 and ISO/CIE 11664-4:2019 for colorimetric measurement geometry, ensuring metrological traceability to NIST SRM 2035 and NPL color standards.
Software & Data Management
Accessories integrate natively with HunterLab EasyMatch QC v5.x and above, supporting audit-trail-enabled calibration logging, SPC charting (X-bar/R, Cpk), and automated pass/fail reporting. All analog outputs support Modbus RTU over RS-485 for legacy system interoperability. Data export formats include CSV, XML, and OPC UA—facilitating seamless ingestion into MES platforms such as Siemens Opcenter, Rockwell FactoryTalk, or SAP ME. Software validation documentation (IQ/OQ/PQ templates) and 21 CFR Part 11 compliance packages are available upon request.
Applications
- Real-time color consistency monitoring in extruded snack foods, confectionery coatings, and ready-to-eat meals on high-speed packaging lines.
- In-process verification of pigment dispersion uniformity in pharmaceutical tablet film coatings and lyophilized vial stopper coloration.
- Continuous spectral tracking of polymer melt color during compounding and blow molding—enabling closed-loop correction via masterbatch dosing systems.
- Hygienic color validation in sterile-fill bioreactor skids and aseptic filling lines, where stainless-steel housings and CIP-compatible seals prevent microbial entrapment.
- Automated rejection signaling in automotive interior trim lines, where tri-color alarm lights trigger pneumatic diverters upon out-of-tolerance detection.
FAQ
What is the maximum ambient temperature rating for the ST3 Vortex Cooler Enclosure?
The ST3 Vortex Cooler Enclosure is rated for continuous operation in ambient temperatures up to 80°C, provided ≥60 psi clean, dry, oil-free plant air is supplied.
Is the calibration box traceable to national standards?
Yes—the black and white ceramic tiles are certified against NIST-traceable reflectance standards, with individual calibration certificates included per unit.
Can the 4–20 mA outputs be assigned to non-color metrics such as gloss or haze?
No—these analog channels are fixed to CIE L*, a*, b*, and ΔE*ab by firmware; spectral data export via Ethernet is required for derived metric calculation.
Does the stainless-steel housing meet FDA requirements for direct food contact?
The housing itself does not contact product; however, its 316L construction, electropolished finish, and absence of crevices comply with FDA guidance for equipment surfaces in indirect food contact applications.
What is the lead time for custom-configured accessories?
Standard configurations ship within 5 weeks from order confirmation; custom mechanical modifications (e.g., non-standard mounting flanges) require additional engineering review and may extend lead time by 2–3 weeks.
