KROHNE VFM 1091 - Manual (Page 22)

6.2.5 Primary information
Primary data gives VFC 091 the basic information about the vortex primary sensor. Use Fct. 3.1.1 NOMINAL.DIA for specification of the
nominal DIN/ANSI size and Fct. 3.1.2 K-FACTOR for the calibration factor of the primary.
6.2.6 Application information
This is the data of process medium, it’s operating conditions and physical properties. It consists of
- process medium Fct. 3.3.1 FLUID
- operating and normal density conditions. Refer Fct. 3.3.2DENS. OPR and Fct. 3.3.3DENS NORM This is required only if Fct. 1.1.1. MEAS
INST. Is NORM. VOLUME or MASS.
6.2.7 Internal Electronic Totalizer
- The internal electronic totalizer counts volume, normalized- volume or mass. Totalizer value is saved in the non-volatile memory upon
power failure. Totalizer can be displayed in the units desired as per the programming of Fct. 1.2.2 TOTAL. UNITS. Totalizer counting is
interrupted for the duration of power failure. Counting may optionally be stopped and thereafter restarted by the use of Fct. 3.2.3 TOT.
ON/OFF. Totaliser counting is also interrupted when in programming mode (in Menu)
- Resetting [to 0] of the totalizer is possible by using Fct. 3.2.2 TOT. RESET.
6.2.8 Current (analog) output I
Current (Analog) Output I – The current output gives an analog representation of the flow-rate. An output of 20mA always corresponds to Q
100 %
& 4mA to Q 0 %The current output between Q
0 %
and Qmin is 4mA.
CHARACTERISTICS OF CURRENT OUTPUT I
I
22
4mA
Q
% 0
20mA
Q
min
Q
100 %
Q
TESTING OF CURRENT OUTPUT I
Fct. 2.2 TEST I can be used to check current output. Integer values between 4 and 20mA are possible to be monitored on a current meter. During
the test, current output changes to the test values(s). The normal current value is restored automatically [as per programming of current output]
when the measurement mode is resumed.
6.2.9 Pulse output P
Programming of Pulse output value is provided by 1.3.x functions.
Fct. 1.3.1 FUNCTION P Pulse output
Choose YES -to make Pulse output active as per functions Fct. 1.3.1 to Fct.1.3.3 NO makes Pulse output inactive (0 Hz). When Pulse output
function is not required choose the option NO.