KROHNE SMARTSENS ORP 1590 EN - Manual (Page 30)

7
DESCRIPTION OF HART INTERFACE
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SMARTSENS ORP 1590
www.krohne.com 11/2013 - 4002547102 - MA SMARTSENS ORP 1590 R02 en
7.4 Inputs/outputs and HART ® dynamic variables and device variables
PV = Primary Variable; SV = Secondary Variable; TV = Tertiary Variable
Code = device variable code
Device variables
The HART ® dynamic variable PV is always connected to the HART ® current output which is
assigned to the ORP value.
7.5 Field Communicator 475 (FC 475)
The Field Communicator is a hand terminal from Emerson Process Management that is
designed to configure HART
® and Foundation Fieldbus devices. Device Descriptions (DDs) are
used to integrate different devices into the Field Communicator.
7.5.1 Installation
The HART ® Device Description for the sensor must be installed on the Field Communicator.
Otherwise only the functions of a generic DD are available to the user and the entire device
control is not possible. A "Field Communicator Easy Upgrade Programming Utility" is required to
install the DDs on the Field Communicator.
The Field Communicator must be equipped with a system card with "Easy Upgrade Option". For
details consult the Field Communicator User’s Manual.
HART ® dynamic variable
PV SV TV
ORP Electrode voltage Temperature
HART ® device variable Code Type
ORP value 0 linear
Electrode voltage 1 linear
Temperature 2 linear
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