FOUNDATION FIELDBUS..issue

**zenon1** · 11-17-2009, 08:25 AM

do anybody have guidance for in FF envirement how to do the calibration of field instruments like control valkve with smart positioner ,smart Xmeter plz anybody have guidance plz let me help...i need it urgent ...plz is there any standard material or anytng regarding this.

**medo200684** · 12-13-2009, 07:15 AM

what is your system and instrument manufacturer you want to calibrate
for calibration of FF u can calibrate it from the system but maly it doesn't need calibration just chek zero because it read the process variable direct.

**zenon1** · 12-14-2009, 08:25 AM

Delta v

**mrkssastry** · 06-01-2010, 08:21 PM

Irrespective of the control system u r using, most of the modern FF transmitters do not need span calibration. Only some times, they need zero calibration. Mass Flow meters which are used in the custom metering are an exception to this statement as they have a zero shift with time.

The FF Control Valves are to be calibrated some times for their full stroke. However, All the FF transmitters, control valves will come with their DDE files. Once they are loaded onto the Control system, through the control system, you can calibrate / re range / update the DDE files. No need to calibrate them in the lab / no need of hand held calibrator.