Tianyan TY-ZXLS Online Grain Moisture Monitoring System

Overview

The Tianyan TY-ZXLS Online Grain Moisture Monitoring System is an industrial-grade, resistive-based in-line monitoring solution engineered for continuous, real-time measurement of moisture content and temperature during grain drying, conveying, and storage operations. Unlike laboratory-grade benchtop meters or handheld probes, the TY-ZXLS integrates directly into process lines—particularly grain dryers, belt conveyors, and bin discharge chutes—enabling closed-loop feedback control. Its core sensing mechanism relies on calibrated electrical resistance across a defined grain mass, where impedance correlates with dielectric properties modulated by water content. This principle is standardized under ASTM D4940 (Standard Guide for Use of Electrical Resistivity Methods for Soil Moisture Measurement) and adapted for granular agricultural commodities through empirical grain-specific calibration curves. The system operates without sample extraction or manual intervention, supporting uninterrupted production flow while meeting operational requirements for GMP-aligned grain handling facilities.

Key Features

• Integrated dual-parameter monitoring: Simultaneous real-time acquisition of moisture (% w.b.) and bulk temperature (°C), both displayed with 0.1-unit resolution.
• Adaptive sensor architecture: Interchangeable roller-gap adjustment allows single-sensor deployment across eight major cereal and oilseed types—including corn, wheat, soybean, paddy rice, and rapeseed—without hardware replacement.
• Intelligent process control logic: Programmable multi-stage drying cycles with configurable target moisture thresholds; automatic relay output triggers alarm and dryer shutdown upon setpoint attainment.
• Industrial-grade motor protection: Embedded current monitoring and mechanical obstruction detection prevent jamming from stones or clumps, extending service life in abrasive grain environments.
• Ruggedized sealed enclosure: IP65-rated housing ensures reliable operation across extreme ambient conditions (−30 to 100 °C, non-condensing), suitable for outdoor dryer installations and high-humidity silo basements.
• Human-centric HMI: 4.3-inch capacitive touchscreen with native Chinese interface simplifies operator training and reduces misoperation risk in multilingual agri-processing sites.

Sample Compatibility & Compliance

The TY-ZXLS is validated for homogeneous, free-flowing grain streams with particle size distributions typical of post-harvest cleaning (e.g., cleaned corn kernels, dehulled soybeans, hulled barley). It is not intended for powdered, pelleted, or highly heterogeneous mixtures. Calibration protocols follow ISO 712:2016 (Cereals and cereal products — Determination of moisture content — Reference method) for traceability to gravimetric standards. While not certified to FDA 21 CFR Part 11, the system supports audit-ready operation when paired with external logging systems compliant with GLP/GMP documentation requirements. Its electrical safety design conforms to GB/T 19001–2016 (equivalent to ISO 9001) and meets China’s CCC marking criteria for industrial instrumentation.

Software & Data Management

The embedded firmware provides local data logging at user-defined intervals (1–300 seconds), storing up to 10,000 timestamped records in non-volatile memory. Raw measurements are exportable via USB interface in CSV format for integration with SCADA platforms (e.g., Siemens WinCC, Rockwell FactoryTalk) or enterprise-level grain management software. No cloud connectivity or remote access is included—ensuring data sovereignty and eliminating cybersecurity exposure in isolated rural processing facilities. All configuration changes, calibration updates, and alarm events are time-stamped and retained for internal review, satisfying basic traceability needs under ISO 22000 food safety management frameworks.

Applications

• Continuous moisture verification during cross-flow or concurrent-flow grain drying to prevent over-drying and energy waste.
• Real-time quality gatekeeping at elevator intake stations prior to storage or contract fulfillment.
• Temperature anomaly detection in stored grain to identify early-stage spoilage or insect activity hotspots.
• Process validation support for HACCP plans requiring documented critical limits for moisture (e.g., ≤14.5% for safe long-term wheat storage).
• Integration with automated blending systems to maintain consistent moisture profiles in mixed-grain feed formulations.

FAQ

Is the TY-ZXLS suitable for measuring moisture in ground or milled grain?
No. The resistive measurement principle requires intact, freely flowing kernels to ensure consistent electrode contact and representative bulk impedance. Milled products yield non-reproducible readings due to variable surface area and packing density.
Can calibration be performed on-site without factory support?
Yes. The system includes a guided manual calibration mode using reference oven-dried samples per ISO 712. Users must maintain traceable gravimetric standards and document all calibration events.
Does it meet international export certification requirements (e.g., CE, UKCA)?
The TY-ZXLS carries China Compulsory Certification (CCC) but does not hold CE or UKCA marks. Export customers requiring EU/UK conformity must conduct independent third-party assessment against EN 61000-6-2 (EMC) and EN 61000-6-4 (emissions).
What maintenance intervals are recommended for sustained accuracy?
Sensor rollers and contact surfaces should be inspected weekly for wear or residue buildup; full recalibration is advised every 90 days or after 500 operational hours, whichever occurs first.
Is analog output (e.g., 4–20 mA) available for PLC integration?
Yes. The control signal cable includes isolated 4–20 mA outputs for both moisture and temperature, configurable via menu settings to match standard industrial I/O modules.