15
Programming
Version: FAU_M_EN_170308_E004
3.3.3.
Pulse Time for External Counters
Depending on its input stage and type, the external counter may require a certain pulse time to identify the
output pulses of the FAU. With the present parameter, you can adapt the pulse time to the external counter.
This setting will not affect the integrated totaliser of the FAU.
WARNING!
The pulse time must be shorter than 50% of the period of the max. dividing frequency. Other settings may falsify
the output frequency.
Example: The external counter requires a pulse time of at least five milliseconds.
To chose the cursor position
To select 0 to 9 for the present cursor position
To enter
Example: The flow rate is 4,000 ccm/min and the external counter shall count on one unit with each ccm. The
required pulse time t(p) can be calculated as follows:
4000 ccm/
𝑚𝑚𝑚𝑚𝑚𝑚
60 s/ min
∗
1
𝑐𝑐𝑐𝑐𝑚𝑚
= 66,67
𝐻𝐻𝐻𝐻
=>
𝑡𝑡
(
𝑝𝑝
) =
14.99
𝑚𝑚𝑚𝑚 ∗
50 %
100 %
= 7.5
𝑚𝑚𝑚𝑚
𝑡𝑡
(
𝑝𝑝
)
Entering with will terminate programming for the divider. The display
is showing the present parameter level
There are three possibilities to continue:
to go through the present parameter level again in the above-mentioned order and change single
parameters if necessary.
to go back to the measuring mode. The parameter settings do now apply.
to call up the next parameter level.
Parameter Level „Limit-Programming“
3.4.
The FAU has two separate switch outputs for real-time flow monitoring.
You can determine a maximum and minimum. Any bypassing of these
limits will activate the corresponding output.
WARNING!
The minimum must be smaller than the maximum. If this is not the case, a warning will require you to re-enter
the limits starting with the maximum.
