Acquisition of measurements from sensors or test articles with high potential (hundreds of volts) relative to earth ground can be challenging. High common-mode voltage inputs can degrade the accuracy of differential measurements and, in severe cases, damage system circuitry. With a properly designed isolation barrier in the differential amplifier, accurate measurements of low-level signals can be accomplished without clipping or compromising the instrumentation.
PFI now offers two conditioner cards with built-in input isolation up to 350 V and 500 V, respectively, for its flagship 28000 signal conditioning system. The 28154 and 28164 extend PFI's industry-leading line of versatile signal conditioners to high common-mode voltage applications. The quad-channel cards feature both balanced constant voltage and balanced constant current excitation, along with programmable low-pass filters, programmable pre- and post-filter gain stages, AC/DC input coupling, and multiple sensor configuration options to support a wide range of signal conditioning applications. The cards provide three independent outputs that can be programmed for filtered or wideband operation. View the 28154 and 28164 specification sheets today to learn more about how the enhanced capability of these cards can address your measurement needs.
Precision’s 28000 stand-alone signal conditioning system accommodates a wide variety of transducers: voltage, charge, static or dynamic strain (including high-temperature strain), any bridge-type transducer such as pressure sensors, piezoresistive accelerometers, load cells, and more. Systems can be built from a range of chassis sizes, from portable 2-card frames for small channel-count applications to larger 16-card frames that can provide up to 256 channels of transducer conditioning.
World-class signal conditioning is just the beginning. Have confidence in your data with the 28000’s test subsystem. Perform NIST-traceable annual calibration without removing your system from the rack. And at test time, ensure everything is working as it should with diagnostic go/no-go tests.