ELIS PLZE
Ň
a. s.
Design, Assembly and Service Manual
Page 27 of 44
Ultrasonic flow meter SONOELIS SE404X,
SONOELIS SE406X
ELIS PLZE
Ň
a. s., Lucni 15, P. O. BOX 126, 304
26 Plzen, Czech Republic, Phone: +420/377517711, fax: +420/377517722
Es90201K/c
List of parameters (limit values, date and time)
Qmax
Maximum (overload) flow rate q
s
in the given measuring units
ICIS
Impulse number, defining fluid volume or mass (in selected units) per one impulse at the
impulse output
Date
The actual calendar date
Day of the week
The actual day of the week
Time of the day
The actual time of the day
Low flow cutoff
The flow rate level, in per cent of q
s
, below which the meter will display and at its outputs
indicate zero flow rate
Vol. flow limit
Maximum volume flow rate level; where a binary output is associated with this parameter, it
will indicate values exceeding this limit
Mass flow limit
Maximum mass flow rate; where a binary output is associated with this parameter, it will
indicate values exceeding this limit
Volume limit
Maximum aggregate volume; where a binary output is associated with this parameter, it will
indicate values exceeding this limit
Mass limit
Maximum aggregate mass; where a binary output is associated with this parameter, it will
indicate values exceeding this limit
Temp. limit Maximum temperature; where a binary output is associated with this parameter, it will
indicate values exceeding this limit value.
Comment: The limit values for all the above parameters shall be given in units selected using the procedure
described in section 7.3.2.4 above. Should new parameter units be selected, the limit values need be re-defined
accordingly; otherwise the meter function would be incorrect.
7.3.2.8. Resetting aggregate quantities
Upon entering this mode, the corresponding message will appear on the display (see Fig. 7.3.9, page 35). 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).
7.3.2.9. 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. 7.3.10 on page 36. 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.
