Endress+Hauser Proline Promag 10, Руководство по эксплуатации

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11 Description of Device Functions PROline Promag 10
106 Hauser
11.9 Group PROCESS PARAMETER
Function description PROCESS PARAMETER
ON-VALUE LOW FLOW
CUT OFF Use this function to enter the switch-on point for low flow cut off.
Low flow cut off is active if the value entered is not equal to 0. The sign of the
flow value is highlighted on the display to indicate that low flow cut off is
active.
User input:
5-digit floating-point number, [unit]
Factory setting:
Depends on nominal diameter and country, [value] / [dm
3
...m
3
or US-gal]
Corresponds to the factory setting for the low flow cut off (see Page 116 ff.).
!
Note!
The appropriate unit is taken from the SYSTEM UNITS group (see Page 93).
The switch-off point is specified as a positive hysteresis from the switch-on
point with 50%.
Example:
Q = Flow [volume/time]
t = Time
a = ON-VALUE LOW FLOW CUT OFF = 200 dm
3
/h
b = Low flow cut off switch-off point = 50%
c = Low flow cut off active
1 = Low flow cut off is switched on at 200 dm
3
/h
2 = Low flow cut off is switched off at 300 dm
3
/h
1
c c
Q
t
1
2
b
a
2
H