Welcome to Kett - Tomorrow's Testing Today
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Welcome to Kett - Tomorrow's Testing Today
Online NIR Composition Meter — Production-Grade Multi-Component Analysis on Open Process Lines
Measure moisture, water activity, protein, fat, oil, sugar, solvent, alcohol, coat weight and film thickness simultaneously — continuously, on a moving production line, without contact or sample preparation. The KJT700 is the production-grade online NIR analyzer Kett has refined across thousands of installations: belt conveyors, screw conveyors, sluices and any process where the product is visible to the sensor.
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The KJT700 measures multiple organic components simultaneously and continuously on open production lines — belt conveyors, screw conveyors, sluices, drop chutes, gravity feeds. The sensor sees the product directly, scans at 0.1-second refresh, and reports moisture, protein, fat, oil, sugar, solvent, alcohol, coat weight and film thickness in real time. Same online installation, full multi-component analysis.
The KJT700 measures across a 35–50 mm spot at 350 mm (optimal) focal length, scanning continuously at 0.1-second refresh with ±0.001% precision. Up to 99 calibrations are stored on each sensor head, and a single PC connection supports up to 32 heads — making the KJT700 the analyzer of choice for multi-point installations across complex production lines. NIR reflectance is standard; transmittance configurations are available for clear and translucent samples.
Kett refined the KJT700 platform across hundreds of pilot installations before commercial release — over 500 units were operating in the field before the first commercial KJT700 was offered. That installed base is the reason Kett can offer custom calibration development for new applications with confidence.
Each KJT700 ships with Kett’s one-year Total Care warranty on parts, labor and specification compliance. Post-warranty maintenance agreements and on-site calibration services are available.
Need lab-grade desktop verification of your process readings? The KB270 Desktop NIR Composition Meter brings the same multi-component capability to the laboratory bench, providing reference values for KJT700 calibration development and ongoing verification.
Need online moisture-only at a smaller footprint? The KB30 Online NIR Moisture Meter is the world’s smallest inline NIR sensor — moisture-only, smart-sensor design, no PC required — for applications where composition measurement is not needed.
| Weight | 30 lbs |
|---|---|
| Dimensions | 21 × 18 × 13 in |
| Measurement Principle | Near-Infrared Reflectance/Transmittance |
| Measurement Range | 0.000–99% (product dependent) |
| Accuracy | ±0.001% (reference method dependent) |
| Resolution | 0.001% |
| Reproducibility | 0.001% |
| Response Time | Continuous |
| Refresh Rate | Sensor head 0.1 s current output, 0.2 s display; controller 0.5 s |
| Applications | Moisture, water activity, and organic components |
| Measurable Components | Ash, Caloric value, Fat/oil, Moisture, Protein, Starch, Water activity |
| Form Factor | Online |
| Measurement Diameter | Approximately ø50 mm at 350 mm |
| Measurement Distance | 350 mm ±50 mm |
| Number of Wavelengths | 2, 4, or 6 plus reference |
| Light Source | Tungsten lamp |
| Sensor Type | Reflectance sensor head in aluminum die-cast case, water- and dust-resistant, ceiling mounted (M8 × 4, 12 mm depth) |
| Throughput / Capacity | Multiple sensors per circuit. Up to 32 sensors per connection. |
| Display | Sensor head: 7-segment LED (channel number, measured value or error code, four digits). Controller: LED plus LCD showing head, channel, component value, and status. |
| Measurement Modes | Continuous monitoring with selectable averaging span, 0.0–99.9 seconds in 0.1 second steps |
| Compensation Functions | Temperature compensation, analytical curve correction constants, offset compensation, optional humidity compensation via sensing hood |
| Features | Zero adjustment by key operation, analytical curve offset correction, upper and lower limit alarms, output hold, self-diagnostics with error code reporting |
| Data Memory Capacity | 99 analytical curves stored in the sensor head. Trend and process data stored in Kett Tracker on the connected PC. |
| Calibration Curves Available | 98 analytical curves per sensor head, 99 per controller (one channel per item) |
| Safety Features | Low reflectance, motor rotation error, internal temperature high/low, channel setting error, calculation error, RAM error, sensor error, common failure output |
| Operating Temperature | 0–40°C, non-condensing |
| Operating Humidity | 10–80% RH, non-condensing |
| Communications | RS-485 sensor head to controller and head to head. RS-232C on controller. 4–20 mA current output for recorder. |
| Power | Sensor head: AC 100/200V ±10%, 50/60 Hz. Controller: AC 100/200V ±10%, 50/60 Hz. Automatic 100V/200V recognition. |
| Power Consumption | Sensor head approx. 50 VA; controller approx. 20 VA |
| Dimensions | Sensor head 282 mm (W) × 177 mm (D) × 451 mm (H); controller panel opening 275 × 180 mm (max panel thickness 18 mm) |
| Weight | Sensor head 11 kg (24 lbs); controller 8 kg (18 lbs) |
| Standard Accessories | Air purge hood (FD), ceramic zero adjustment plate (CKN), controller (JEC1) |
| Options | I/F board (JEIFB), sensing hood with humidity sensor (FDH), cooling unit (FCU), joint box stainless (JBXB) or ABS (JBXABS) |
| Warranty | One Year Total Care Warranty covering parts, labor, and specification compliance. Maintenance Agreements available. |
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