KROHNE UFM 3030 Service EN - Manual (Page 46)

46 UFM 3030
Part D Technical Data
10 Dimensions
Go to the technical datasheet. The latest version of the technical datasheet (and other
documentation) can be found on the KROHNE Download Center via
www.krohne.com . You will also
find a digital copy on the product information CD that is delivered with the product.
11 Block diagram
The converter consists of four functional groups.
•
Functional group 1 generates the ultrasonic waves, controls the sensors and carries out high-
precision measurement of the propagation time by means of a digital signal processor (DSP).
•
In functional group 2 the digitised data supplied by the DSP are evaluated by microprocessor P
2 in accordance with the functions, operating and flow sensor data which are factory set. The
DSP data and data from the galvanic isolated inputs is used to calculate the various flow values.
In turn, the galvanic isolated output circuits are updated. In the event of a power failure, last
counts are saved in EEPROM 2. In the same way as operating and functional check data are
permanently stored in EEPROM 1. Both are retained for 10 years without auxiliary power.
•
Functional group 3.This group is galvanically isolated from the other groups. It consists of
various outputs (current and pulse) and inputs (digital and analog). All input/output circuits share
the same common.
•
Functional group 4 Power supply. The power supply is a switching, high efficient module with a
wide input range. Two variations of the power supply are available. One for high voltage AC
supply and one for low voltage AC/DC supply. The AC power supply has a wide range from 85
to 265 Volts.