Pacific Instruments PI 7200 and PI 7300 data acquisition systems

Designed to reduce installation and test set-up costs while improving signal quality, the 16-channel PI 7200 and PI 7300 data acquisition systems (DAS) function as ethernet-connected appliances that condition, amplify and digitise outputs from strain gauges, bridges, IEPE or voltage transducers.

Features include real-time correction/compensation of gain offset and excitation voltage from -20 to +50°C, quality signal conditioning with high gain and a 24-bit high-speed A/D converter per channel to provide high resolution and high sample rate across a wide operating range. Multiple units can be combined or distributed in larger installations.

The self-contained units provide transducer excitation, bridge completion and balance. The transducer output is amplified and filtered to remove signal components that could produce alias errors and digitised to 24-bit resolution. The digitised transducer output is digitally processed providing multiple sample rates, an 80 dB/octave FIR filter and a 32-bit floating point output format in millivolts referred to input, millivolts referred to output or user-defined engineering units.

The systems are suitable for rugged applications such as wind tunnels, engine test stands or wherever the DAS needs to be located on or near the test article. Additional model options are available for applications requiring voltage inputs; programmable voltage excitation, bridge completion for 120Ω and 350Ω strain gauges, shunt calibration and automatic balance; or regulated power for transducers with internal electronics.