KROHNE Summit 8800 Vol 1 - Manual (Page 83)

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08/2013 - MA SUMMIT 8800 Vol1 R02 en
SUMMIT 8800 CALIBRATION 08
8. Calibration
Calibration should be carried out by qualified personnel. This function allows certain available
Inputs and Outputs to be calibrated for accuracy, which is performed using the Windows con-
figuration software.
The procedure is described in the Help Menu and from the front panel of the flow computer.
Calibrate mode is entered as a sub-menu from the Edit Mode, the entry procedure is described
later in this chapter.
The I/O card to be calibrated is selected from a list of available cards in the flow computer. The
Calibrate button should then be operated. Status of the selected Card will be read and a Calibra-
tion window will appear.
The following types of different Inputs and Outputs can be Calibrated, and are selected by the
individual items in the Calibration list.
8 .1 Input Calibration
8 .1 .1 HART Input
Calibration of the HART Transmitter Inputs is performed using a Digital Handheld or other
similar calibration device supplied by the transmitter’s manufacturer. The transmitters are
connected to the flow computer in parallel as a multidrop system and as such, each transmitter
must have a different address.
It is essential that the transmitters have their addresses programmed and the burst mode op-
eration turned off before they are connected to the flow computer.
In the flow computer it is necessary to suspend HART Communication to the HART transmitters
whilst they are being calibrated. Communication on any one connection loop can be suspended
to all transmitters, or individually. The Start Communication and Stop Communication buttons
are used for this purpose.
All transmitter communication will automatically be re-started irrespective of the button status,
when the Close button is selected.
Figure 91 Calibrate HART screen