ITech IT9121 Series, User Manual

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Integral
Operation Function
Copyright © Itech Electronics Co., Ltd. 26

Integration time
Displayed as Time, in the format of hhhh:mm:ss.
Specification

Save in case of power failure
The integral result can be kept in the memory even in case of power failure
during operation of the integral function. When the power supply is recovered
and the integral function is disabled, the integral result before power failure is
displayed. When the power supply is recovered and the integral is rest, the
integral function is enabled again.

Display resolution
The maximum display resolution of the integral value is 99999. When the
integral value reaches 100000, the decimal point will move automatically. For
example, when 0.01mwh is added to 999.99mwh, 1.0000wh will be displayed.

Display in case of overflow
When the integral value meets the following overflow conditions, the integral
function will be disabled, and the integral time and integral value at this point will
be kept.

The integral time reaches the maximum value (10000 hours).

The integral values of WP, q and WPAV reach the maximum/minimum
display integral values.

Maximum/minimum display integral value

Active power integral (WP): ±99999 Mwh

Current integral (q): ±99999 MAh

Average power integral (WPAV): ±99999 Mw

Restricted implementation
Settings of the following functions cannot be changed during integral operation.
Function
Integration status
Integral
resetting
Current
integral status
Integral
interruption
Functions related to settings of measurement parameters
Wiring Executable Unenforceable Unenforceable
Measurement range Executable Unenforceable Unenforceable
Filter Executable Unenforceable Unenforceable
Averaging function Executable Unenforceable Unenforceable
Synchronization Executable Unenforceable Unenforceable
Data updating rate Executable Unenforceable Unenforceable
Integral function parameter setting
Integral mode Executable Unenforceable Unenforceable
Integral timer Executable Unenforceable Unenforceable
Integral operation
Integral start Executable Unenforceable Executable
Integral stop Unenforceable Executable Unenforceable
Integral resetting Executable Unenforceable Executable
Other operations
Save operation Executable Executable Executable
Hold operation Executable Executable Executable
Single measurement
operation Executable Executable Executable