Digital USB Load Cell Amplifier | Strain Gauge Data Acquisition System DAQ

High Resolution & Sampling USB Data Acquisition

The assembly and setup of a sensor platform have vastly improved with the introduction of USB. The traditional assembly of a sensor platform involved a sensor, an amplifier, a power supply, a strain gauge data acquisition system (i.e. strain gauge DAQ), and software, on occasion a filter, and then a PC to capture and store the data. Though traditional platforms are suitable for most test-measurement applications, they carry a laundry list of “side effects” with them. Cost, space, noise, accuracy, convenience, and temperature co-efficiency all become variables within that traditional setup. What the industry needed was a fast data exchange solution that wouldn’t be phased by such “side effects.” And there lay the answer, a single-unit solution – the USB module.

FUTEK’s line of USB force sensor amplifiers is a modern, single-unit solution that eliminates the need for external amplifiers (or force sensor signal conditioners), filters, ADC modules, and power supply. The USB digital load cell amplifier is powered by the PC USB bus, which provides excitation voltage for the force sensor. The USB Family handles sensors with amplified voltage output (± VDC), amplified current ( ± mA), low-voltage mV/V output as well as Encoder TTL signals encountered in rotary torque sensors.

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The sampling rate can be configured up to 38,400 Samples per Second (SPS), which is suitable for high-frequency applications where the quantification of forces and moments requires high sampling rates. All USB signal conditioners start at an internal resolution of 24 bits, and up to 21 Bits of noise-free resolution (NFR).

High Resolution

Resolution can be defined in three ways: internal, noise-free, and effective number of bits. All USBs start at an internal resolution of 24 bits, and up to 21 ENOB. The noise free resolution of our devices can be up to 20 bits.

Impressive Accuracy & Non-Linearity

FUTEK defines accuracy as a limit tolerance that defines the average deviation between the actual output versus theoretical output. And we define nonlinearity as the maximum deviation of the calibration curve from a straight line drawn between the no-load and rated load outputs. Knowing that both of these specifications are important, our USB line has up to ± 0.002 % of FSR for both accuracy and non-linearity.

Broad Sampling Rates

Some applications require an aggressive sampling rate, where a thousand samples per second maximum just won't cut it. FUTEK’s USBs offer excellent sampling rates, ranging between 2,5 and 39,4k samples per second. Please note that resolution will differ as your sampling rate increases.

Low Noise Interference

Noise interference can be quite detrimental to your data collection, especially for delicate measurements in the milligram capacity ranges, so reducing the noise was our primary objective when designing the USBs.

The easy plug-and-play setup is quick and the total measurement system cost is lower when compared to a traditional sensor system.

With the introduction of our USB Technology, FUTEK designed the SENSIT software to capture all of your test and measurement data. SENSIT Test and Measurement Software is a strain gauge data logger that displays the Peak/Valley, Tare/Gross and allows full data logging and live graphing capabilities.

USB225

Input: mV/V

Compact, High Resolution

USB520

Input: mV/V, VDC, mA, Encoder

Industrial, Multi-Profile