Mocon ProSpect TS/TD-30 Online Dairy Analyzer

Overview

The Mocon ProSpect TS/TD-30 Online Dairy Analyzer is a process-integrated near-infrared (NIR) spectrophotometer engineered for continuous, non-destructive compositional monitoring of liquid and semi-solid dairy streams in real time. Based on transmission-mode NIR spectroscopy (850–1100 nm), the instrument quantifies key quality parameters—including fat, protein, lactose, total solids, and moisture—by correlating spectral absorbance patterns with chemometric calibration models validated against reference laboratory methods (e.g., AOAC 991.20, ISO 9622:2013). Unlike offline benchtop analyzers, the TS/TD-30 is designed for permanent installation in pasteurization lines, standardization loops, or blending tanks, enabling closed-loop feedback to PLC-based control systems for dynamic recipe adjustment and consistent product specification compliance.

Key Features

• Fully automatic, flow-through transmission cell with integrated temperature stabilization (±0.2 °C) to minimize thermal drift during high-throughput operation.
• Dual optical pathlength configurations (TS for low-turbidity liquids such as raw milk; TD for higher-scattering matrices including whey protein concentrates and cultured products).
• Industrial-grade fiber-optic interface compatible with 316L stainless-steel wetted parts, IP66-rated enclosure, and SIL2-compliant safety architecture for hazardous-area deployment.
• Real-time analog output (standard 4–20 mA, optional 0–10 V) synchronized with process data timestamps for seamless integration into DCS/SCADA environments.
• Self-diagnostic optics module with automated baseline correction and lamp intensity monitoring to ensure long-term photometric stability (>12 months between recalibration under typical plant conditions).

Sample Compatibility & Compliance

The ProSpect TS/TD-30 supports continuous analysis of fluid dairy matrices across a wide viscosity and particle-size spectrum: raw and pasteurized milk, skimmed milk, cream, standardized milk blends, yogurt base, acidified whey, ultrafiltered permeate, WPI/WPC/MPC slurries, and mozzarella curd wash water. It complies with FDA 21 CFR Part 11 requirements for electronic records and signatures when paired with Mocon’s validated DataLink software suite. Instrument validation documentation includes IQ/OQ protocols aligned with GMP Annex 15 and ISO/IEC 17025:2017 principles. All calibrations are traceable to NIST-traceable reference materials and verified per ASTM E1655-22 for multivariate spectroscopic method validation.

Software & Data Management

DataLink v4.2 software provides secure, audit-trail-enabled configuration, calibration management, and trending visualization. Each measurement event logs spectral acquisition metadata—including temperature, flow rate (via optional flow sensor input), optical density, and residual error—into a relational SQL database with configurable retention policies. Role-based user access controls support GLP-compliant workflows, while encrypted data export (CSV, XML, OPC UA) ensures interoperability with MES platforms such as Siemens Opcenter or Rockwell FactoryTalk. Remote diagnostics and firmware updates are supported via TLS 1.2-secured Ethernet connection, minimizing unplanned downtime.

Applications

• Milk standardization: Real-time fat/protein ratio adjustment during blending to meet regulatory labeling thresholds (e.g., EU Regulation No 1308/2013).
• Pasteurization line QC: Detection of compositional deviations indicating upstream separation issues or contamination events.
• Whey processing: Monitoring lactose-to-protein ratios during ultrafiltration to optimize membrane flux and retentate concentration.
• Cheese-making: Tracking dry matter and pH-correlated NIR indices in curd wash water to predict final cheese yield and texture consistency.
• Yogurt fermentation: Trending lactose depletion and protein aggregation kinetics to determine optimal set time and reduce over-acidification risk.

FAQ

What reference methods are used to develop and validate the chemometric models?
Calibration models are developed using primary reference methods specified in ISO 9622 (FTIR), AOAC 991.20 (Kjeldahl nitrogen), and gravimetric fat determination (ISO 14156), with cross-validation performed using independent production batches from ≥3 geographically distinct dairies.
Can the analyzer operate in high-humidity or washdown environments?
Yes—the TS/TD-30 features an IP66-rated stainless-steel housing, epoxy-coated electronics, and purge-compatible optical ports, meeting USDA-FSIS and EHEDG hygienic design guidelines for Zone 2 washdown areas.
Is it possible to add new analytes post-installation without hardware modification?
Yes—new prediction models can be deployed remotely via DataLink software after successful verification against local reference data, subject to spectral sensitivity constraints within the 850–1100 nm window.
How often does the system require maintenance or recalibration?
Optical alignment and wavelength calibration are factory-verified for 12 months; routine maintenance consists of quarterly cleaning of flow cell windows and annual verification using NIST-traceable quartz standards.
Does the instrument support integration with Industry 4.0 infrastructure?
Yes—it natively supports OPC UA PubSub over MQTT, enabling direct connectivity to cloud-based analytics platforms (e.g., Azure IoT Hub, AWS IoT Core) for predictive maintenance and batch deviation analytics.