Deleite HE100-1 Halogen Moisture Analyzer

Overview

The Deleite HE100-1 Halogen Moisture Analyzer is a precision thermal gravimetric instrument engineered for rapid, reliable determination of moisture content in solid and semi-solid samples via halogen lamp-assisted drying. Operating on the principle of loss-on-drying (LOD), the analyzer continuously monitors mass loss under controlled heating conditions until a predefined endpoint—either time-based or auto-terminating—is reached. Unlike traditional oven-drying methods requiring hours, the HE100-1 achieves full moisture quantification in minutes due to its high-intensity, spectrally optimized halogen heating system, which delivers rapid thermal response and uniform energy distribution across the sample surface. Designed for routine QC/QA laboratories, raw material inspection stations, and production floor environments, the instrument complies with core method validation expectations outlined in ASTM D4457, ISO 15512, and USP <921> for moisture determination by thermogravimetry.

Key Features

• High-resolution backlit dot-matrix LCD display with ambient-adaptive contrast—optimized for low-light operational settings without compromising readability or user fatigue.
• Hermetically sealed, high-stability electromagnetic force compensation (EMFC) weighing sensor with integrated thermal isolation—ensures minimal drift during dynamic heating cycles and maintains ±1 mg readability throughout the full 0–100 g range.
• Stainless steel sample chamber with seamless, polished interior—resistant to thermal stress, corrosion, and residue buildup; facilitates rapid cleaning and prevents cross-contamination between sequential analyses.
• Adjustable halogen heating module (40–180 °C in 1 °C increments) coupled with real-time temperature feedback control—enables method-specific drying profiles for diverse matrices including polymers, pharmaceutical powders, foodstuffs, and agricultural products.
• Automatic dual-parameter output: simultaneous calculation and display of % moisture and % solids based on initial and final mass readings—eliminating manual post-processing and reducing operator error.
• Integrated draft shield with aerodynamic profile—minimizes convective air currents around the weighing cell, ensuring measurement stability even in non-laminar airflow environments.

Sample Compatibility & Compliance

The HE100-1 accommodates heterogeneous samples within the 0.5–100 g range, with optimal performance observed for 3–10 g aliquots per test. It supports moisture quantification across the full 0.01–100.00% w/w range, validated for repeatability ≤0.30% RSD (n=10, 3 g reference standard). The instrument meets fundamental design requirements for GLP-compliant environments: all critical parameters—including set temperature, heating duration, final mass, and timestamp—are retained in non-volatile memory. While not inherently 21 CFR Part 11 compliant out-of-the-box, audit trail functionality can be enabled via optional firmware upgrade and paired with validated third-party LIMS integration through the RS232 interface.

Software & Data Management

Data export and remote operation are supported via standard RS232 serial communication (ASCII protocol), enabling direct connection to PCs, thermal printers, PLC controllers, and enterprise-level laboratory information management systems (LIMS). Optional software packages provide method library management, statistical reporting (mean, SD, RSD, trend charts), and CSV/Excel-compatible data logging. All measurements include embedded metadata: date, time, operator ID (if entered), method name, sample ID, and environmental temperature/humidity (when external sensors are interfaced). Exported datasets retain traceability to original instrument configuration and calibration history when used with Deleite’s certified calibration documentation package.

Applications

• Pharmaceutical manufacturing: verification of residual solvent levels in active pharmaceutical ingredients (APIs) and excipients per ICH Q5C guidelines.
• Food quality control: rapid assessment of moisture in flour, spices, dairy powders, and snack foods to ensure shelf-life stability and microbial safety limits.
• Polymer processing: monitoring hygroscopic uptake in nylon, PET, and ABS resins prior to extrusion or injection molding.
• Agricultural testing: grain moisture profiling for storage compliance (e.g., USDA GIPSA standards) and harvest readiness evaluation.
• Chemical raw material release: batch acceptance testing of catalysts, pigments, and fine chemicals where water content directly impacts reactivity or dispersion behavior.

FAQ

What is the recommended sample preparation procedure for optimal accuracy?
Pre-homogenize bulk samples and spread evenly across the 100 mm stainless steel pan to maximize surface area exposure. Avoid overloading beyond 10 g to prevent thermal gradient formation and incomplete drying at the center.
Can the HE100-1 be calibrated for traceable mass and temperature?
Yes—mass calibration uses certified Class M2 weights (10 g, 50 g, 100 g); temperature verification is performed with NIST-traceable PT100 probe at three points (60 °C, 100 °C, 150 °C). Calibration certificates are issued upon request.
Is the halogen heating system replaceable in-field?
The halogen lamp module is a user-serviceable component with standardized mounting and electrical interface; replacement requires no recalibration and takes under 5 minutes with included tools.
Does the instrument support multiple drying protocols simultaneously?
Up to 20 user-defined methods can be stored in internal memory, each with independent settings for target temperature, ramp rate, hold time, endpoint logic (timer vs. slope detection), and auto-print trigger.
How is data integrity ensured during power interruption?
All active measurements are buffered in EEPROM; upon restart, the unit resumes from the last recorded mass/temperature point without data loss—critical for unattended overnight runs.