Continuous, non-contact near-infrared moisture measurement — delivering real-time accuracy directly on your production line, without interrupting your process.
NIR light measures moisture without touching the product — no wear, no contamination, no process interruption.
Built-in 7″ colour touchscreen shows live readings, 60-minute trend chart, and full calibration — on the sensor itself.
Three isolated 4–20 mA outputs feed your control system directly for closed-loop drying and mixing control.
Profinet, Profibus DP, EtherNet/IP, Modbus TCP and EtherCAT — integrates with virtually any PLC or DCS.
Measure moisture plus up to two further components — oil, coat weight, or basis weight — from the same optics.
The QN-100 uses the characteristic absorption of near-infrared light by water molecules to deliver accurate, instantaneous moisture readings — with no sample preparation and no contact with the product.
A tungsten halogen lamp projects near-infrared light towards the product through a rotating filter wheel. Each filter selects a specific NIR wavelength in sequence.
The product reflects NIR light back to the sensor's detector. Water molecules in the product absorb the measurement wavelength strongly, while the reference channels are unaffected.
The ratio of the measurement signal to the reference signals is computed, eliminating the effect of product colour, texture, and distance variations.
A two-point laboratory calibration maps the optical ratio to moisture percentage, producing an accurate, real-time moisture reading on the HMI and analogue outputs.
| Measurement Range | 0 to 30% Low Moisture, 30 to 90% High Moisture. |
| Accuracy | ±0.05% moisture (typical) |
| Repeatability | ±0.02% moisture (1σ, stable conditions) |
| Resolution | 0.01% |
| Response Time | Configurable damping filter (1–10 s typical) |
| Stored Calibrations | Up to 256 product calibrations |
| Light Source | Tungsten halogen lamp (>>20,000 hrs typical) |
| Detector | Pbs photodetector |
| Filter Channels | 6 |
| Standoff Distance | 250 - 400 mm from window face |
| Supply Voltage | 230 VAC or 24 VDC |
| Power Consumption | <30 W (sensor + HMI) |
| Analogue Outputs | 3 × 4–20 mA (isolated, 16-bit) |
| Digital Outputs | 3 × NPN/PNP, 24 V DC |
| Digital Inputs | 4 × 24 V DC |
| Operating Temperature | 0 to +60 °C |
| Enclosure (Sensor) | IP65 (NEMA 4) |
| Enclosure (HMI) | IP54 (NEMA 12) |
| HMI Display | 7″ colour TFT touchscreen |
| Fieldbus Options | Profinet, Profibus DP, EtherNet/IP, Modbus TCP, EtherCAT |
| Certifications | CE marked, RoHS compliant |
The QN-100 is trusted across a broad range of manufacturing sectors wherever continuous, accurate moisture measurement of bulk solids or powders is critical to quality and efficiency.
Cereals, grains, snacks, baked goods and food ingredient lines.
Pelleting, drying, and cooling in compound feed and pet food production.
Pharmaceutical granules, chemical powders, and active ingredient drying.
Sand, aggregates, minerals and cement raw materials.
Granule and recycled material moisture before extrusion or moulding.
Wood chips, wood pellets, and biomass fuels for calorific value control.
Wheat tempering, flour milling, and grain conditioning.
Any bulk solid or granular material drying and conditioning process.
Moisture measurement during tobacco leaf processing, conditioning, and drying.
Speak to our applications team — we'll help you evaluate the QN-100 for your specific process and arrange a demonstration.
The QN-100 delivers reliable measurement across diverse industrial processes.
Non-contact measurement of glue coatweight on transparent film with high precision.
Fertiliser moisture measurement through transparent window for quality control.
Direct in-line moisture measurement of ceramic powder on drying conveyor systems.
