KROHNE UFM 3030 Service EN - Manual (Page 32)

32 UFM 3030
Converter
Menu Function
Function CORR T CORR T+P BATCH
Flow display (Function
3.03.01) Additional corrected volume flow indication
Totalizer display (see
Function 3.03.02 through
3.03.05) Corrected volume
flow totalizer
indication Automatic volume flow
Totalizer and batch
Totalizer indication
Selectable
Current output function (see
Function 3.04.01) Outputs proportional with corrected volume
flow Used as digital input
Pulse output function (see
Function 3.05.01) Selectable Indicate end batch
Analog input 1 (see Function
3.02.02 through 3.02.03) Temperature correction
Analog input 2 (see Function
3.02.02 through 3.02.07) Pressure correction
Digital input (see Function
3.06.01) Start/Stop batch
Note: Depending on the programming of Function 3.03.07 CYCL DISP, the additional or selectable
indications can be manually selected by pressing the
↑
key, or they are alternating with the display
of the measured value(s). The corrected volume flow indication or volume flow Totalizer indication is
marked with the letter "C" at the left of the display 2nd (middle) line. The batch Totalizer indication is
marked with the letter "B".
Function 3.02.02 through 3.02.07 4/20 mA Reference for analog input 1/2
These functions are available depending on the version (see Function 3.02.01). The analog inputs
are supplied with the 4-20 mA current range signal coming from the temperature- and pressure
transducers. Their 4 mA and 20 mA values represent a certain temperature- or pressure value,
which must be defined in these functions.
Function 3.02.08 through 3.02.11 Product constant K0/K1/K2 /Product density at T = 15 °C
Calculation of the corrected volume.
Only available for the CORR T or CORR T + P version (see Function 3.02.01).
One of the features of the 3-beam ultrasonic flow meter is the capability of calculating the corrected
volume. Corrected volume calculation can be carried out either based on temperature
compensation or based on temperature and pressure compensation.
The corrected volume is calculated to standard conditions defined as 15°C and, if applicable,
1.01325 Bara. For this purpose the analog inputs are set to connect a temperature transmitter and a
pressure transmitter. For accurate calculations it is advised to calibrate the individual P and T
instruments.
The corrected volume is calculated from the following formula:
Vcorrected = Vactual * VCF
Vcorrected = calculated corrected volume at standard conditions i.e. 15
°
C and 1.01325 bara
Vactual = actual volume measured by the 3-beam flow meter
VCF = Volume Correction Factor and is calculated from [Ctl x Cpl]