Yoke TSF-50A-5 Infrared Moisture Analyzer

Overview

The Yoke TSF-50A-5 Infrared Moisture Analyzer is a precision laboratory instrument engineered for rapid, gravimetric moisture determination using halogen radiation heating coupled with high-stability electromagnetic force compensation weighing technology. It operates on the principle of loss-on-drying (LOD): a pre-weighed sample is subjected to controlled thermal energy from a calibrated halogen lamp, driving off volatile components—primarily water—while an integrated microbalance continuously monitors mass change in real time. The system calculates moisture content (%) as the relative mass loss between initial and final stabilized weight, referenced to the original sample mass. Designed to meet GB/T 29249–2012—the Chinese national standard for electronic moisture analyzers based on drying methodology—the TSF-50A-5 delivers measurement repeatability and accuracy comparable to reference oven-drying methods, but with significantly reduced analysis time (typically 3–8 minutes per test). Its thermally isolated weighing cell minimizes convection-induced drift, while the halogen heating element ensures uniform, responsive, and reproducible temperature profiles across diverse sample matrices.

Key Features

• 4.3-inch capacitive touchscreen interface enabling intuitive navigation, method setup, and real-time parameter adjustment without external peripherals
• Halogen lamp heating system with programmable temperature range (up to 160 °C) and precise digital PID control for consistent thermal input
• High-resolution electromagnetic force compensation sensor providing 1 mg mass readability and 0.01% moisture resolution
• Integrated real-time drying curve display showing mass vs. time dynamics, facilitating method optimization and anomaly detection
• Automatic endpoint detection algorithm that locks final moisture value upon thermal and mass stabilization—no manual intervention required
• RS232 serial port supporting direct connection to label printers, thermal printers, or laboratory PCs for data export and LIMS integration
• Robust aluminum alloy housing with ergonomic tilt-adjustable stand and draft shield enclosure for stable benchtop operation

Sample Compatibility & Compliance

The TSF-50A-5 accommodates solid, semi-solid, and powdered samples within a maximum capacity of 50 g, making it suitable for raw materials, granules, tablets, powders, slurries, and homogenized biological tissues. Sample pans are constructed from aluminum or stainless steel (optional), ensuring thermal compatibility and ease of cleaning. Instrument validation aligns with core requirements of ISO/IEC 17025 for testing laboratories and supports GLP-compliant workflows through traceable calibration records and user-accessible audit logs. While not pre-certified to FDA 21 CFR Part 11, its data output structure—including timestamps, operator ID fields, and method metadata—enables implementation of electronic signature and audit trail protocols when deployed within validated IT environments. Routine verification can be performed using certified moisture standards (e.g., sodium tartrate dihydrate) per USP and ASTM E1064 guidelines.

Software & Data Management

No proprietary desktop software is bundled; however, the RS232 interface outputs ASCII-formatted data streams compatible with common spreadsheet applications (e.g., Microsoft Excel), laboratory information management systems (LIMS), and custom SCADA platforms. Each measurement record includes: date/time stamp, sample ID, method name, initial/final mass (g), moisture content (%), drying temperature (°C), duration (s), and status flag (e.g., “Completed”, “Stabilized”, “Overheat”). The touchscreen stores up to 20 user-defined test methods with independent settings for temperature ramp rate, hold time, termination criteria (slope-based or time-based), and auto-print trigger. All parameters are password-protected to prevent unauthorized modification, supporting multi-user lab environments with role-based access control.

Applications

This analyzer serves quality control and R&D laboratories across regulated and non-regulated sectors. In pharmaceutical manufacturing, it verifies moisture levels in active pharmaceutical ingredients (APIs), excipients, and finished dosage forms—critical for stability, flowability, and tablet compression performance. Food and beverage producers employ it for batch release testing of flour, dairy powders, coffee beans, and pet food pellets, ensuring compliance with Codex Alimentarius moisture limits. Agricultural labs use it for grain moisture certification prior to storage or trade. Chemical and polymer manufacturers rely on it for resin drying validation and catalyst hydration monitoring. Environmental and feed testing labs apply it to soil samples, compost, and animal feed formulations where rapid turnaround supports high-throughput screening.

FAQ

What standards does the TSF-50A-5 comply with?
It conforms to GB/T 29249–2012, the People’s Republic of China national standard for electronic moisture analyzers utilizing the drying method. Its operational principles align with ASTM E1064, USP , and ISO 712 for comparative gravimetric moisture analysis.
Can the instrument be calibrated internally?
Yes—it supports internal calibration using built-in reference weights, and external calibration with NIST-traceable mass standards (10 g and 20 g recommended). Calibration logs are stored with timestamp and operator ID.
Is the halogen lamp replaceable by the user?
Yes—the lamp module is field-replaceable with standard tools; replacement parts and procedure documentation are provided with the instrument.
Does it support multiple languages on the touchscreen?
The interface is English-only; no multilingual firmware is available in this model variant.
What is the typical service life of the halogen heating element?
Under normal usage (≤10 cycles/day), the halogen lamp maintains stable output for ≥5,000 operating hours, equivalent to approximately 3–5 years depending on duty cycle and temperature setpoint.