Weigh Feeder Scales and Load Cell Catalog

The SFT exploits the dependency of a vibrating wire’s resonant frequency on its tension to measure applied loads. Through mechanical means the applied load is transmitted to the wire, causing a change in its resonant frequency from which the value of the applied load is computed by the onboard microprocessor.

A fully calibrated (linearized, spanned and temperature compensated) signal is transmitted via RS 485 serial communication to the controller.

K-Tron Smart Force Transducer Catalog

Download Spec Sheet: D5 Platform Scale	D5 Platform Scale with K-SFT Technology Application: The D5 is part of a K-Tron loss-in-weight feeder. It is equipped with a type K-SFT6 resp. K-SFT-XP-6 sensor. The SFT Smart Force Transducer, operating under compression, provides accurate, stable and reliable digital load measurement under a broad range of operating conditions. Main Features • Direct digital weighing • Onboard microcontroller • Excellent repeatability and stability • High resolution • High tolerance to vibration and electrical noise • Electronic linearization • Electronic temperature compensation • Stiff, rugged construction • Serial channel interface (RS 422/485) • Addressable two-way communication • Built-in overload protection of +100% • Built-in underload protection of -50%
Download Spec Sheet: SFS-12	SFS-12 Platform Scale with K-SFT Technology Application: The SFS-12 is designed specifically for use with the K-Tron MT12 Microfeeder. It is equipped with a K-SFT sensor. The SFT (Smart Force Transducer) operates under compression and provides accurate, stable and reliable digital load measurement under a broad range of operating conditions. Main Features • Direct digital weighing • Onboard microcontroller • Excellent repeatability and stability • High resolution • High tolerance to vibration and electrical noise • Electronic linearization • Electronic temperature compensation • Stiff, rugged construction • Serial channel interface (RS 422/485) • Addressable two-way communication • Built-in overload protection of +100% • Built-in underload protection of -50% • Built-in motor cable for connection to MT12 feeder • Built-in air for connection to MT12 feeder (seal purging)
Download Spec Sheet: SFS-24	SFS-24 Platform Scale with K-SFT Technology Application: This SFS-24 is part of a K-Tron loss-in-weight feeder. It is equipped with a K-SFT sensor. The SFT (Smart Force Transducer), operates under compression and provides accurate, stable and reliable digital load measurement under a broad range of operating conditions. Main Features • Direct digital weighing • Onboard microcontroller • Excellent repeatability and stability • High resolution • High tolerance to vibration and electrical noise • Electronic linearization • Electronic temperature compensation • Stiff, rugged construction • Serial channel interface (RS 422/485) • Addressable two-way communication • Built-in overload protection of +100% • Built-in underload protection of -50%
Download Spec Sheet: K-SFT III	Smart Force Transducer K-SFT III / Load Cell Application: The SFT Smart Force Transducer, operating under compression, provides accurate, stable and reliable digital load measurement under a broad range of operating conditions. Main Features • Direct digital weighing • Onboard microcontroller • Excellent repeatability and stability • High resolution • Ultra low deflection • High tolerance to vibration and electrical noise • Electronic linearization • Electronic temperature compensation • Stiff, rugged construction • Serial channel interface (RS 422/485) • Addressable two-way communication • Built-in overload protection of +200% • Built-in underload protection of -50%
Download Spec Sheet: SFT II L	Smart Force Transducer K-SFT II L / Load Cell Application: The SFT Smart Force Transducer, operating under compression, provides accurate, stable and reliable digital load measurement under a broad range of operating conditions. Main Features • Direct digital weighing • Onboard microcontroller • Excellent repeatability and stability • High resolution • Ultra low deflection • High tolerance to vibration and electrical noise • Electronic linearization • Electronic temperature compensation • Stiff, rugged construction • Serial channel interface (RS 422/485) • Addressable two-way communication • Built-in overload protection of +200 % • Built-in underload protection of -50 %
Download Spec Sheet: K-SFT II M	Smart Force Transducer K-SFT II M / Load Cell Application: The SFT Smart Force Transducer, operating under compression, provides accurate, stable and reliable digital load measurement under a broad range of operating conditions. Main Features • Direct digital weighing • Onboard microcontroller • Excellent repeatability and stability • High resolution • Ultra low deflection • High tolerance to vibration and electrical noise • Electronic linearization • Electronic temperature compensation • Stiff, rugged construction • Serial channel interface (RS 422/485) • Addressable two-way communication • Built-in overload protection of +1000 kg • Built-in underload protection of -100 kg

Definition of Accuracy

Weigh feeder accuracy is a measure of how closely a feeder discharges material at the desired flow rate. A complete expression of accuracy includes measurements of repeatability and linearity. Repeatability measures the extent of discharge variability at a given flow rate. Linearity gauges the deviation of average flow rate over the feeder’s full operating range. Measurements of both repeatability and linearity are made by independently weighing a series of timed catch samples obtained from the discharge stream. Sample weights are then used to compute repeatability and linearity statistics.

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Weigh Feeder Scales and Load Cell Catalog

K-Tron Smart Force Transducer Catalog

Definition of Accuracy