Input modules are available to accept millivolt, volt, process current, thermocouple, RTD, ac and dc strain gage, frequency and LVDT inputs. RTD modules accept an additional resistor to establish linearization of the input signal, while the 3B37 thermocouple module uses an additional resistor to set the cold junction compensation level. This enables the user to map any portion of the input signal to the full output span. This tremendous flexibility should satisfy virtually any requirement. The resistor values are determined by equations defined for each module.
Special ranges can also be factory configured.
The 3B39 output module accepts a high-level analog signal from the system connector and provides a current output on the output screw terminals. The input signal drives a voltage to current converter through the isolation barrier. Each output module has zero and span potentiometers for fine calibration of the isolated current output. The output module has two user-programmable jumper options. Inc. All rights reserved.