WIKA DI35 - Manual (Page 39)

6 Commissoning, operation
WIKA operating instructions digital indicator model DI35-M 39
PN181, PN182 and PN183: Totaliser calculation
To calculate a totaliser / sum value the time base and the unit are very
important. The discharge is stated in amount per time and the speed in
distance per time.
By parameterization of the time base PN181 to s, min or h the device adds up
the die totalisor value.
If e.g. a sensor collects 1.200l/h, you only have to add up the 3.600th part of
the total amount of liter at a measuring time of 1 second; in this case it would
be 0.333 liter per measuring cycle. Despite of this small value, the totaliser
value can add up itself to a quite high value during a period of one year. In
this example it would be approx. 10,512,000 liter in a year. Here, a
declaration in cubic meters would be reasonable. For the realization of this,
you have to preset a factor, in this example PN182=3 (10³), so the value can
be divided and liters become cubic meters.
If you want to integrate the amount for only one month, the demonstration in
cubic meters can be provided with a decimal place under PN183.
If you parameterize now factor PN182=2 and the decimal place PN183=1, it
would lead to a demonstration of 864.0 cubic meters at the end of the month.
PN184, PN185: Totaliser-Reset
According to the demanded application the totaliser- / sum value needs to be
set back to a special point of time. This can be done directly by a
parameterization of the initial value PN184 on multi-function or by the under
PN185 parameterized actuators (see program number table chapter 6.7). The
most reasonable way is by the digital input, as it is not easy accessible for the
operating personal.
PN186: Recall of the totalisator values
The totaliser- / sum value can be permanently or displayed by an actuator
(multi-function key / digital input). Often the sum value has not the first
priority, so its demonstration occurs as a coproduct.
PN200: Serial number
Under PN200 you can call up the 5-digit serial number that allows allocation
to the production process and the manufacturing procedure.