Product application, installation and service manual
ELIS PLZE
Ň
a. s.
Ultrasonic Flow Meter SONOELIS SE 4015 and SE 4025
Page 21 of 44
ELIS PLZE
Ň
a. s., Lu
č
ní 15, P. O. BOX 126, 304 26 Plze
ň
, Czech Republic, tel.: +420/377 517 711, fax: +420/377 517 722
Es 90 337 K/c
Any push-button control actions will not disturb the measuring functions of the meter in any way.
A detailed description of individual “block” functions controlled by the push-button unit is given in the following
paragraphs.
6.2.1 Data display mode
The flow meter in full configuration can measure and evaluate any of the 20 physical quantities listed in section
6.1.2 above. In the data display mode, any of the measured quantities can be displayed. The display format is as
follows:
Line 1 – name of the measured quantity in the selected language (Czech, English, German, Spanish, Italian or French);
Line 2 – the measured value in the selected unit system.
Upon switching the power on, the system activates the data display mode whereby the measured value of the pre-
selected (“initial”) physical quantity is displayed. Each of the 20 physical quantities available can be selected as the
initial one.
If the operator depresses push-button T1, another measured quantity will be displayed (the next on the list in
section 6.1.2). Then, unless T1 is depressed again within 5 minutes, the initial quantity will be displayed again.
To leave the Data Display Mode for the Parameter Setting Mode, depress push-button T4 (see Fig. 18). Select the
desired operating mode (function block) by push-button T1 and confirm the selection by depressing T4 again.
6.2.1.1 Volume flow rate
The value of the measured volume flow rate is displayed as a 3- or 4-digit number (this is determined by the
manufacturer with respect to the meter application). Provided the flow meter has been set for measurements in
both directions of flow, the sign before the reading indicates the flow direction (“+” for the flow direction shown by
the arrow sign on the meter body, “-“ for the opposite direction).
6.2.1.2 Relative volume flow rate
The displayed reading shows the ratio (in per cent) of the measured volume flow rate to the specified maximum
volume flow rate.
6.2.1.3 Mass flow rate
The mass flow rate can be measured and the measured data displayed only on condition that the meter
configuration includes a thermometer and that the fluid density vs. temperature characteristic is known. For more
technical details of the readings see the comments to section 6.2.1.1 above. If a thermometer is not installed, the mass
flow rate function block is skipped when selected by push-button T1.
6.2.1.4 Relative mass flow rate
See the comments to section 6.2.1.2 above concerning the relative volume flow rate.
6.2.1.5 Volume
The aggregate fluid volume passed through the flow sensor during the measurement period, i.e. from the moment
the volume data were reset by the reset push-button on the meter, or since the measurement start command from the
superordinated control system was received via the RS 485 communication line, or since the data-resetting command
was actuated using the T push-buttons as described in section 6.2.2.8 below. The displayed value can have up to 7
digits; higher readings are shown in the form of products of real numbers and appropriate powers of 10 (the “E” format).
The reading sensitivity is 0.01 l, the maximum reading is 2.8.10
9
m
3
. In the case of bi-directional measurement, the
aggregate volume reading is the difference between the volume passed in the positive and the negative direction of the
fluid flow. The displayed value includes the polarity sign.
