Acowa PUMA - Page 32

User manual
31
ACOWA INSTRUMENTS, Industrivej 10, 8305 Samsø - VAT-no: 36562919 – mail: info@acowa.dk – Phone: +45 7221 7979
Stormflow registration:
Stormflow calculation is used to record the number, duration and quantity of stormflow events.
The stormflow calculation can be used for either as a "True overflow" or "Conditional overflow".
The stormflow event “start” signal can be selected either as a high limit at AI1 or as a digital input on DI 1-6.
To use "True overflow", "Time before stormflow start (min)" and "Time after stormflow end (min)" are both
set to 0.
If "Conditional" overflow is desired as shown in the picture, enter how long an overflow must be active
before it is registered as a valid overflow, and how long an overflow must be completed before a new
overflow is registered. In the example shown, the start time is set to 5 minutes. and an end time set at 5
hours.
The table is filled with a column for levels and a column with the flow value that matches the entered level.
The overflow levels are entered in the same unit as the level measurement on AI1 (typically in cm) and the
flow is typically entered in m3/h. if you want the result with for example 1 decimal the flow values are
multiplied by 10 in the table.
NOTE: it is important to start with a data set in the table that is NOT (0,0) as the PUMA perceives (0,0) as
being the end of the table.
Operation data can be found in the following addresses:
Address
Description
Data type
Read/Write
206
Overflow current flow (m3/h)
u32
R
208
Number of overflows total
u32
R/W
210
Number of overflows today
u32
R/W
212
Number of overflows yesterday
u32
R/W
214
Duration of overflow today (seconds)
u32
R/W
216
Duration of overflow today (seconds)
u32
R/W
218
Duration of overflow yesterday (seconds)
u32
R/W
220
Overflow volume total (m3)
u32
R/W
222
Overflow volume today (m3)
u32
R/W