17 Advanced functions
17.5 Event triggers
FLUXUS G831ST-HT
2021-06-01, UMFLUXUS_G831ST-HTV1-0EN
128
Afterwards the properties of the event trigger are defined.
Tab. 17.1: Source items
source item
list item
output
Flow quantities
Flow velocity
flow velocity
Operation vol. flow
operating volumetric flow rate
Mass flow rate
mass flow rate
Totalizers
Volume (+)
totalizer for the volumetric flow rate in positive flow direction
Volume (-)
totalizer for the volumetric flow rate in negative flow direction
Volume (Δ)
difference of the totalizers for the positive and negative flow direction
Mass (+)
totalizer for the mass flow rate in positive flow direction
Mass (-)
totalizer for the mass flow rate in negative flow direction
Mass (Δ)
difference of the totalizers for the positive and negative flow direction
Fluid properties
Fluid temp.
fluid temperature
Fluid pressure
fluid pressure
Fluid density
fluid density
Kin. viscosity
kinematic viscosity
Dyn. viscosity
dynamic viscosity
Compress. coeff.
gas compressibility coefficient
Diagnostic values
Crest factor
signal-to-noise ratio for the cross correlation function
Transducer temp.
transducer temperature
Miscellaneous
Custom. Input 1
measured values of input quantities (e.g., temperature, density) which are
not used for calculation
In the menu item
Options\Assign inputs
it is possible to assign
configured inputs to customized inputs.
Custom. Input 2
Custom. Input 3
Custom. Input 4
Tab. 17.2: Properties of the event trigger
property event trigger
setting
description
Function
(switching condition)
MAX (x>limit)
The event trigger will switch if the measured value exceeds the upper
limit.
MIN (x<limit)
The event trigger will switch if the measured value falls below the
lower limit.
ERR (x=fail)
The event trigger will switch if a measurement is not possible.
Within range
The event trigger will switch if the measured value is within the
defined range.
Out of range
The event trigger will switch if the measured value is outside the
defined range.
Type
(holding behavior)
Non-hold
If the switching condition is no longer met, the event trigger will return
to the idle state after approx. 1 s.
Hold
The event trigger remains activated even if the switching condition is
no longer met.
Hold for a while
The event trigger remains activated during a defined time even if the
switching condition is no longer met.
