Product application, installation and service manual
ELIS PLZE
Ň
a. s.
Ultrasonic Flow Meter SONOELIS SE 4015 and SE 4025
Page 26 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
6.2.2.8 Resetting aggregate quantities
Upon entering this mode, the corresponding message will appear on the display (see Fig. 25). If resetting of
aggregate quantities is not required, depress push-button T2 to access the next parameter-setting block. Confirm your
intention to reset the aggregate quantities by depressing T4. The display will then ask
RESET ?
At this stage, you can still return to the initial step of the resetting mode by depressing T3. Depress T4 to reset the
aggregate readings of the flow volume and flow mass, the operational information (the meter operation time, the error
time and power loss time) and define the start of a new measurement period (the date, hour and minute of the same).
The system will respond with a confirming message (Parameter Set).
6.2.2.9. Meter zero setting
Before leaving the manufacturing plant, every flow meter is carefully set for correct operation. One of the key
parameters in this respect is the meter zero. A correctly set meter zero implies that at zero flow rate (or zero fluid flow
velocity through the meter sensor) the meter indicates a zero flow rate (zero fluid flow velocity). The setting value (a
meter zero shift) is expressed in mm per second. The meter zero shift as identified in the manufacturing plant is stored
in the meter memory under the name of initial (in-production) zero setting value.
Meter component ageing and other factors acting over long-term operational periods may result in minor meter zero
displacements. To eliminate these, use the automated zero resetting function. However, great care should be taken in
employing this function. First of all, the zero flow rate condition shall be ensured (make sure that the closing valve in the
piping is not leaking). Only then the zero resetting function may be used.
A detailed description of the zero resetting block is shown in Fig. 26. Upon initiating this function, the operator shall
select either the in-production or automated meter zero setting mode. The selection is done by push-button T1,
confirmation by T4. When the in-production setting mode is selected, the meter zero is reset using the zero shift value
determined in the manufacturing plant.
In the automated zero setting mode, the meter will first ask whether the fluid flow rate through the meter sensor is
really zero (the main requirement for a successful zero setting). If it is not so, cancel the setting process using push-
button T3. Upon confirmation by push-button T4 the display will show the message “WAIT FOR 100”. The zero setting
procedure lasts 100 measuring cycles. The actual number of measuring cycles performed is shown on the second
display line.
After 100 measuring cycles the zero displacement is evaluated. If it is smaller than 50 mm/s, the shift value is stored
and the display with read “PARAMETER SET”. If the value is greater than 50 mm/s,
a notice to this effect is displayed. However, this is highly unlikely; in such as case it is recommended to check again
whether the fluid flow has indeed been completely stopped. Use push-button T3 to invalidate the setting and push-
button T4 to run the setting procedure anew.
The meter zero setting function is available only with technological flow meters.
6.2.2.10 End of parameter setting
At the end of the parameter setting procedure, the display will read
PAR. SETTING END
Depress push-button T4 to access the data display mode. However, should you wish to perform any additional
parameter setting action, depress T3 to return to the previous parameter setting function block (see Fig. 27).
