KROHNE ESKII HART - Manual (Page 3)

ESKII Remote Operation - HC 275 / AMS
Dev.-Rev. 01, DD-Rev. 01
© 1998 KROHNE Meß technik D-47058 Duisburg
Page 3
1 General Information
The ESKII is a two-wire transmitter with 4..20mA current output and HART

capability. It can be
mounted in H250 Variable Area Flowmeters with indicators M9 or M7. This document fills the gap
between the „Installation and operating instructions H250“ and the online help available under AMS.
General characteristics of the ESKII HART

interface:
•
Multidrop Mode is supported.
•
Burst Mode is not supported.
•
The ESKII transmitter implements a fixed optimized damping value on both the digital process
value transmitted via HART interface and the Analog Output.
2 HART Communicator 275 (HC275)
2.1 Installation
•
Connection:
Refer to the wiring diagrams and descriptions in the
“Installation and Operating Instructions H250” (KROHNE) section 10.1.
•
HC275 configuration:
The HC275 has to be programmed with the ESKII HART Device Description (DD).
Generally this must be done by the manufacturer or the distributor of the device.
(If the ESKII DD is not programmed in the HC275 the transmitter self test can’t be executed, the
Transmitter Specific Status Messages can’t be displayed and offline configuration is not
possible.)
2.2 Operating
See ESKII Menu Tree HC275 (Attachment A).
The ESKII operating concept bases on the HART DD for generic devices with the following
differences:
•
Some parameters can only be read:
sensor units, range values (upper/lower range value), damping value, transfer function, write
protection, sensor units, final assembly number.
(For calibration of both the ESKII output information and the mechanical indicator of the
measuring instrument KROHNE offers a special program KroVaCal).
•
Support of ESKII specific physical units
•
Display format dependent on measuring range
•
A ESKII Self Test can be performed and ESKII specific status messages can be displayed