User manual for - FLOW METER SPI-N118
Symbols and functions of push-buttons:
Symbol used in the manual:
[ESC/MENU]
Functions:
•
Enter to main menu ( press and hold by at least 2 sec.)
•
Exit the current level and Enter to previous menu (or measure mode)
•
Cancel the changes made in parameter being edited
Symbol used in the manual:
[ENTER]
or
[PAUSE]
Functions
:
•
Start to edit the parameter
•
Enter to the sub-menu,
•
Confirmation of changes made in parameter being edited
•
While batcher mode: pause/start batching.
Symbol used in the manual:
[^] [v]
Functions
:
• Change of the present menu,
• Modification of the parameter value,
• Switching of the display between relay thresholds and number of batches
counter.
Symbol used in the manual:
[
Σ
]
or
[RESET]
Functions
:
•
Switching of the display between total and instantaneous measurements
or batcher counter (while batcher mode only)
•
Zeroing the currently displayed counter (press and hold by at least 2
sec.), the zeroing must be confirmed by
[ENTER]
button.
6.
PRINCIPLE OF OPERATION
After turning the power supply on, device ID and software version are showed on the
display, next the controller goes to the measurement mode.
6.1.
MEASUREMENT MODE
In the measure mode, device displays instantaneous measurement (flow value or time
per one unit of flow, depending on „
F or P
” parameter value) equivalent to quantity of input
pulses, total flow or batcher counter value.
Instantaneous flow (flow rate) is displayed in units defined by parameter
“F unit”
(L or m
3
) and
“Ftunit”
(min., sec. or h), with resolution defined by
“F PrEc”
(max. 5 digits after
decimal point). Pulses delivered to device's input (Figure 4.7) are recalculated according with
procedure showed below:
•
if duration of low or high level (between pulses) is lower than time defined by parameter
“FrEq”
(see Tab.7.1 page 28), these pulses are recognized as noise (or bouncing) and will
be ignored
•
if duration of both levels are in acceptable range, but input frequency is higher than defined
by parameter
“FrEq”
, device goes to alarming state - relays and current output are
switched to their alarm states defined by parameters
“ALArmS”
of particular menus. In
13
MENU
ESC
ENTER
Σ
FL
