Endress+Hauser PROMAG 33, Operating Manual

Page: 53 / 126

Function group
PULSE / FREQ. OUTPUT
This function group is not available when the setting “RS 485 / CURRENT” or “AUX. INPUT / CURRENT”
is shown in the function “SYSTEM CONFIG.” for the communication module RS 485 (see page 71).
OPERATION
MODE
Select operation as pulse or frequency output. Depending on the selection
(pulse or frequency), different functions are available in this function group.
6
PULSE – FREQUENCY
PULSE VALUE
In this function, define the freely selectable flow quantity which the output pulse
is to deliver. By means of an external counter the sum of these pulses can be
totalised and the total quantity determined since the start of measurement.
Note!
This function is only available if the setting “PULSE” is selected in the function
“OPERATION MODE”.
6
5-digit number with floating decimal point (e.g. 75.000 dm
3
/p)
Factory setting: dependent on nominal diameter
7
UNIT ==> VOLUME UNIT
Unit selection
→
see “VOLUME UNIT” function
PULSE WIDTH
In this function, the maximum pulse width can be set for example for external
counters with a max. possible input frequency. The pulse width is limited to the
set value.
Note!
This function is only available if the setting “PULSE” is selected in the function
“OPERATION MODE”.
6
3-digit number with fixed decimal point: 0.05...2.00 s
Factory setting:
2.00 s
7
T/2 < PULSE ==> PULSE/PAUSE = 1:1
If the frequency resulting from the selected pulse weighting and current
flowrate is too high (T/2 < selected pulse width B), the pulses emitted
are automatically reduced to half a cycle. The pulse/pause ratio is
then 1:1.
T/2 > B
T/2
≤
B
B = pulse width
The above figure applies to positive pulses.
ba009
y
5
5
Note!
Note!
Promag 33 6 Description of Functions
Hauser 53