OPERATING THE ULTRASONIC COMPUTER
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Manual USZ 08 · EN05 · 2015-06
21
Operating the ultrasonic computer
General information about the ERZ 2000 USC
Overview of functions
Depending on the software installed, the ERZ 2000 device family is equipped with an integrated
functional unit for direct connection to the ultrasonic measuring element (called IGM for Industrial
Gas Meter in the software). To operate the IGM, no further hardware is required. The function is
always active, but has to be initially enabled in the factory to ensure trouble-free operation. If it is
not enabled, a fault message will permanently be outputted and the disturbance totalizers will be
used for metering. Connection to the measuring element is to be made via the COM 1 port in
RS 485 mode. Modbus is used for communication with the measuring element.
Designations and device variants of the ERZ 2000 system family
The thousands place describes the system name.
The hundreds place defines the calculation of energy (superior calorific value correction).
The tens place defines the function of the orifice-plate computer.
The ones place defines the correction of state, temperature or density (1 = temperature, 2 =
density, 3 = spare, 4 = pressure / temperature).
Examples:
PTZ corrector
ERZ 2004
Superior calorific value corrector
ERZ 2104
Density corrector
ERZ 2002
Density corrector - energy
ERZ 2102
PTZ corrector with ultrasonic controller
ERZ 2004 USC
Superior calorific value corrector with ultrasonic controller ERZ 2104 USC
Density corrector with ultrasonic controller
ERZ 2002 USC
Density corrector - energy - with ultrasonic controller
ERZ 2102 USC
For further details concerning the operation of the device, structure of the coordinate system,
function keys, visibility levels, and access to the system, please refer to the basic manual of the
ERZ 2000.
Setting the device type
If the device is used for custody transfer metering in conjunction with an ultrasonic flowmeter
without controller function, the ERZ 2000 can be operated in the following variants:
PTZ corrector
ERZ 2004 USC,
superior calorific value corrector
ERZ 2104 USC,
density corrector
ERZ 2002 USC,
density corrector - energy
ERZ 2102 USC.
For use with the
DZU protocol and
the USZ 09-C.
For use in IGM
mode with direct
connection to the
measuring head.
