The 6038 input module has eight channels of programmable transducer signal conditioning amplifiers, filters and digitizer. Each channel has programmable voltage excitation, bridge completion and balance, programmable gain instrumentation amplifier and four-pole low pass filter. Channel outputs are multiplexed and digitized to 16 bits then provided to the 6000 data bus.
The 6038 is used with 1/4, 1/2 and full bridge transducers, potentiometers and low-level voltage signals. It is particularly suited to strain gages and bridge transducers. A shielded eight-wire input provides excitation, calibration and signal connections to the transducer. Excitation is programmable from 0 to 12 Volts for each channel. Remote sensing regulates excitation at the transducer eliminating line losses. The effect of loading or a short on any other channel is less than 0.01%. A calibration mode is provided to measure the excitation voltage applied to the transducer.
Gain calibration may be done by voltage substitution using an external traceable voltage standard. A calibration attenuator enables the voltage standard to be used on its highest accuracy ranges and has a post-attenuator output for accuracy verification. Internal and external shunt is provided for transducer calibration. Calibration and gain and zero correction can be automated using Pacific's PI660 software. Two alarms with programmable upper and lower limits are provided.