Table of Contents
Advertisement
7 Configuration
Parameter
Low flow sup-
pression
Signal type, unit
In addition to standardization at the analog input, for the "Analog signal" signal type rescaling can occur
by selecting the unit and using the associated conversion factor. If rescaling is not needed, the unit must
be set to l/s (1 liter per second) (default setting).
For example: The analog input is used to measure the flow velocity in meters per second (m/s). By se-
lecting the unit, the cross section is taken into account and the time unit is adapted if required. The unit
l/s (factor = 1) means that a flow velocity of 1 m/s corresponds to a flow of 1 l/s.
NOTE!
Signal type "Digital": The input signal is not monitored. In the event of a fault, if the input signal does
not deliver any pulses, a value of 0 is determined as the flow. If monitoring is required, a min. alarm with
a suitable limit value needs to be configured.
Signal type "Analog signal": In the event of a fault (sensor error or no input signal), the flow value is
set to 0. If monitoring is required, a min. alarm with a suitable limit value needs to be configured.
7.15.1
Limit value monitoring
Limit value monitoring with one or two limit values (alarm 1, alarm 2) can be activated for flow measure-
ment.
In out-of-limit cases, an alarm signal is activated. Depending on the configuration, an entry is made in
the event list or additionally in the alarm list. In the latter case, the alarm/event text is displayed in the
status bar (until another alarm occurs); the collective alarm is enabled, and the plotter trace may be dis-
played in a different color.
This limit value monitoring function is independent of the general limit value monitoring values (Config-
uration > Limit value monitoring) and available in addition to them.
Device dialog box
144
Selection/settings
-99999 to 0 to +99999
Description
Limit value for suppressing low flow val-
ues (any prefix sign)
A flow value that is below this limit value
is no longer acquired.
Advertisement
Table of Contents
