Welcome to Kett - Tomorrow's Testing Today
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Welcome to Kett - Tomorrow's Testing Today
Compact Online NIR Moisture Meter: Smart Head Design, No Controller Cabinet
Moisture measurement on a running line, from a sensor that mounts over the product and needs nothing else on the wall. Everything the measurement requires sits inside the head itself, which is what made this the smallest online system Kett built.
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Online moisture systems usually arrive as two pieces: a sensor over the line and a controller that has to live somewhere. The KJT30 removed the second piece. The head carries the optics, the electronics, and a readout, so the entire measurement point is one compact unit mounted above the product.
A single head handles 15 calibration channels, each built by regression against your own reference values, with an offset correction available when line conditions shift. Up to 30 heads network together so additional measurement points are added without redesigning the system, and Kett Tracker software on a connected PC handles calibration, trending, alarms, and logging. Analog output drives your existing control system directly. The tungsten lamp and filter wheel are both field replaceable, with lamp life rated at 20,000 hours.
Each unit shipped with Kett’s One Year Total Care Warranty covering parts, labor, and specification compliance. Maintenance Agreements are available.
The KJT30 is no longer manufactured. It was also offered as the KJT30S for high moisture applications, covering roughly 50 percent and above.
Need continuous online moisture measurement on your line today? The KB30 Online NIR Moisture Meter is the current smart head online system, carrying the same non contact measurement in a supported platform.
| Weight | 15 lbs |
|---|---|
| Dimensions | 14 × 15 × 10 in |
| Measurement Principle | Near-Infrared Reflectance |
| Measurement Range | 0.00–99% (product dependent) |
| Accuracy | ±0.01% (reference method dependent) |
| Resolution | 0.01% |
| Reproducibility | 0.01% |
| Response Time | User selectable smoothing time constant per calibration channel |
| Refresh Rate | 0.2 seconds per output, 0.5 seconds per display update |
| Applications | Moisture |
| Measurable Components | Moisture |
| Form Factor | Online |
| Measurement Diameter | Approximately ø33 mm |
| Measurement Distance | 170 mm ±10 mm |
| Number of Wavelengths | 2 plus reference |
| Light Source | Tungsten lamp |
| Sensor Type | Reflectance sensor head with PBS detector in a dust and drip resistant industrial sheet metal case with integral air purge hood |
| Throughput / Capacity | Multiple sensors per circuit. Up to 32 sensors per connection. |
| Display | Three digit LED readout on the sensor head. Trend graphing, alarms, and data logging appear in Kett Tracker on the connected PC. |
| Measurement Modes | Continuous monitoring and timed interval sampling with trend graphing |
| Compensation Functions | Internal temperature correction, zero correction, calibration curve offset correction |
| Features | Zero calibration, calibration curve offset correction, high and low moisture alarms, internal temperature alarm, error reporting, drift less than 0.01% |
| Data Memory Capacity | Trend, calibration, and channel data stored on the connected PC |
| Calibration Curves Available | Up to 15 per sensor head, built by regression against user reference values |
| Safety Features | Internal temperature alarm settable 0–55°C, high and low moisture alarms, fused power input, error code reporting |
| Operating Temperature | 5–35°C at the sensor head installation site |
| Operating Humidity | 0–90% RH, non-condensing |
| Communications | RS-232C to PC within 15 m. RS-485 for longer runs and for networking up to 30 sensor heads. 4–20 mA analog output into 550 ohms or less. |
| Power | 100–120 VAC, 50/60 Hz |
| Dimensions | 267 × 147 × 328 mm (W × D × H) |
| Weight | 5.32 kg (11.7 lbs) including power cable and optical snout |
| Standard Accessories | ZERO30 external zero calibration plate, magnet attached. Kett Tracker PC software. Spare fuse. |
| Options | RS-232C to RS-485 communication converter with power adapter, connector box for networked heads, interconnect cabling |
| Warranty | One Year Total Care Warranty covering parts, labor, and specification compliance. Maintenance Agreements available. |
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