Model 6031 may not be regularly available. Please see Model 6030, 6060 or 6068 for similar applications.
The 6031 is a two-channel, fully programmable signal conditioning amplifier, filter and digitizer. It features a plug-on signal conditioning completion card that is available for strain gage, bridge, RTD, potentiometer, voltage-mode charge, voltage and current transducers. Each channel has a programmable gain differential instrumentation amplifier, four 8-pole low-pass filters, a 16-bit digitized output and a ±10 Volt analog output that can be selected for wideband or filtered response.
The signal conditioning in the 6031 is built around a completion card that configures it for various types of transducers. Programmable excitation provides either 0 to 10.24 Volts constant voltage with remote sensing or 0 to 50 mA constant current excitation for strain gages, bridges, RTDs, potentiometers and other transducers requiring a highly stable source of DC power. A DC supply provides up to 25 Volts of regulated DC power and doubles as the power source for current loops and integrated electronic piezoelectric (IEPE) transducers.
The bridge input is eight-wire shielded; input (2), excitation (2), sense (2) and shunt calibration (2). Automatic bridge balancing ahead of the instrumentation amplifier accommodates large unbalances without limiting gain or dynamic range. The high-impedance current source used for balancing will not cause linearity errors due to bridge loading effects.
The 6031 employs an amplifier/digitizer-per-channel architecture, which provides high bandwidth and digitizing speed with excellent channel-to-channel time correlation. It offers the highest accuracy and completely eliminates crosstalk between channels. Using Pacific’s PI660 software zero and gain calibration and correction are automatic.
The differential instrumentation amplifier has continuous programmable gains from 1 to 5,000 with automatic zero and high common mode rejection. The standard filter is an eight-pole Bessel with four programmable bandwidths and wideband. An optional four-pole Bessel filter has continuously programmable bandwidth with resolution of 1 Hz from 4 Hz to 1 kHz and 5 Hz from 1 kHz to 20 kHz.
The 6031 with the 6031-CC6 completion card provides two-step, bipolar, resistive shunt calibration that may be applied to internal or external bridge arms. Other completion cards have resistance substitution and series resistance calibration. Voltage substitution is usable with all completion cards and employs an external, traceable standard for gain calibration. Automatic zero and gain calibration are implemented in software.