ELIS PLZEŇ a. s., Luční 425/15, 301 00 Plzeň, Czech Republic, Phone: +420/377 517 711, Fax: +420/377 517 722 Es90420K/c
Suppression of step changes in flow rate
Menu: Number of samples, press the key.
The display will read “Number of samples xxx“. Replace xxx by a number from the range of 1 to 255 (usually
25 is chosen). Move the cursor using the key and increase/decrease this number using the or keys ,
respectively. Confirm the selection by pressing the key. The display will then read “Value entered Press
any key”. Press the key or any other key. This action will take you back to the basic menu.
7.1.3. Analog output
Setting options
Connected to terminals 4 and 5 is a programmable current output. It is an active current output, galvanically
isolated from other meter parts. The maximum output load is 1,000Ω. Depending on the liquid-flow
characteristics, the output can be used in four different modes of operation (see graphics below) and in two
selectable measurement ranges.
When the flowmeter is used for measurement of flow in both directions (bi-directional measurement), we
recommend to use current output mode |Q| and use one of the binary outputs (OUT1, OUT2 or relay output)
for indicating the flow direction.
Please contact the producer if is necessary to use mode –Q .. +Q and get information about the flow rate
and direction of flow at the same time (when using –Q .. +Q mode, there is no error indication for exceeding
analog range in negative flow direction).
The two-line display unit will always show two of the items from the following menu. Use the and keys
to browse downwards and upwards through the menu items.
Menu: Analog output, press the key
Selection of current output
Menu: Analog output, press the key / Output 0...+Q, press the key / Output 0…20mA, press the key /
Flow rate for Imax
The current output setting consists of defining flow rate Q
4
corresponding to Imax. Move the cursor using the
key, and increase/decrease the Q
4
value using the and keys. Select the desired Q
4
and confirm the
setting by pressing the key. The display will then read “Value Entered Press Any Key”. Press any key,
preferable the key. This action will take you back to the main configuration menu, item “Analog output”.
In the “Fixed current” mode, the output current can be set within the range of 0 to 20 mA. This mode is used
for meter servicing purposes.
Menu: Analog output, press the key / Fixed current 0…20, press the key / Fixed current 0…20 mA
Move the cursor using the key, and increase/decrease the current value using the and keys. Select
the desired current value and confirm the setting by pressing the key. The display will then read “Value
Entered Press Any Key”. Press any key, preferably the key. This action will take you back to the main
menu, item “Analog Output”. At the same time, the defined current will start to flow through the output circuit.