33
press
√
to enter the demand setting interface. Press
∧
or
∨
to switch the item of demand setting, press Enter to
enter the setting of the item, press + or - to change. After the change is completed, press Exit, enter the password in
the pop-up window, press SaveExit to save the changes and exit, press Esc to exit without saving the changes.
Setting item
range
Demand width
1
，
2
，
3
，
5Min
Demand cycle
5-60Min (set according to the required width, must be an
integral multiple of the required width)
Demand calculation method
：
The APM series meters use the sliding window method to calculate the required amount. In the sliding window
calculation cycle, select a calculation cycle and a sliding window. The sliding window must divide the calculation
period equally. For example: set three 5 minute sliding windows in the 15-minute calculation cycle. Refresh the
current demand at the end of each sliding window. The schematic diagram is as follows:
6.11 System settings
On the main interface, press Menu to enter the menu interface, press
∨
until
“
Parameter Setting
”
is
highlighted, and press
√
to enter the parameter setting interface. Press
∨
until
“
System Settings
”
is highlighted,
press
√
to enter the system settings interface. Press
∧
or
∨
to switch the system settings, press Enter, enter the
password in the pop-up window, press Clr&Exit to wait for the clearing, press Esc to clear the project data, and press
Exit to exit.
15-minute calculation period
5 minutes window sliding time
At the end of each sliding window
time, the required amount is
calculated. The required value is the
average of three (15/5) sliding
windows at the end of the last
calculation cycle.
Time (min)
