The Samson series 3730 and 3731 positioners in versions 2 and higher are perfectly equipped for thanks to the integrated Expert firmware. Without requiring additional sensors, the positioners analyze themselves during initialization. In addition, they indicate system or attachment faults, both on site over their display and over the fault indication output or over other means of communication such as Hart, Profibus or Foundation Fieldbus. The positioners report information that is vital to predictive maintenance, including shifts in the closing point and changes in control quality. They integrate the valve travel and indicate when a set limit value is exceeded. In addition, data is provided on the number of performed initializations, on zero calibrations, configuration changes, and on the duty hours that have passed since the first and the last initialization routine. Warnings are issued when the temperature is outside its permissible operating range. Moreover, the positioners log the extreme values and how long the limits were exceeded. Thanks to the fact that the positioners monitor themselves, they can indicate errors, distinguishing between errors they can correct themselves and fatal errors that require the positioner to be reset. The positioners are rather fault tolerant.
Hall 7, Booth A10