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promesstec GmbH
I Niedersachsenstraße 4 I D-48465 Schüttorf I Tel.:+49 (0)5923/ 90 229 0 I Fax:+49 (0)5923/ 90 229 29
E-Mail: office@promesstec.com I Internet: www.promesstec.com
4) CURRENT OUTPUT
For setting the current output, there are two parameters by which means the current
loop boundary is set to the required flow and method of linkage to flow direction.
If +Q is set, then the current loop output corresponds linearly to the set boundaries
of the current output, however, in the positive flow direction only. In case of -Q, the
current loop output is then similarly dependent on the flow in the negative direction
only.
If ∑Q is set, the value of the output current loop will not be dependent on the flow
direction but only on its absolute value, i.e. without dependency on the direction the
medium flowing through the meter.
Setting takes place in a similar manner by changing the flow quantity value (without
a sign) in m
3
/h for 4mA and consequently 20mA.
number of significant digits:
6
±Q
– in both flow directions (0 l/h = 12mA)
+Q
– positiv flow direction
ΣQ
– in both flow directions ( abs(Q))
- Q
– negativ flow direction
number of significant digits:
6
±Q
– in both flow directions
+Q
– positiv flow direction
ΣQ
– in both flow directions
- Q
– negativ flow direction
