16 Advanced functions
16.11 Activation of a binary output as alarm output FLUXUS G809
2020-06-25, UMFLUXUS_G809V2-2EN
144
16.11.2 Setting the limits
If the switching condition MIN or MAX is selected in the scroll list func, the limit of the output has to be defined:
• Select the physical quantity to be used for the comparison in the scroll list Input. The following list items are available
for the alarm output R1:
– selected physical quantity
– signal amplitude
– sound speed of the fluid
• Press ENTER.
For the alarm outputs R2 and R3 the current physical quantity is set automatically.
If the switching condition MAX is selected in the scroll list func:
• Enter the upper limit.
• Press ENTER.
The alarm will switch if the measured value exceeds the limit.
If the switching condition MIN is selected in the scroll list func:
• Enter the lower limit.
• Press ENTER.
The alarm will switch if the measured value falls below the limit.
If the switching condition QUANT. is selected in the scroll list func, the limit of the output has to be defined:
• Enter the limit of the totalizer.
• Press ENTER.
The alarm will switch when the measured value reaches the limit.
A positive limit will be compared to the totalizer value for the positive flow direction.
A negative limit will be compared to the totalizer value for the negative flow direction.
The comparison will also take place if the totalizer of the other flow direction is displayed.
R1 Input\Mass Flow
R1 Input\Function: MAX\High Limit
R1 Input\Function: MIN\Low Limit
Example
High Limit: -10 kg/h
mass flow rate = -9.9 kg/h
the limit is exceeded, the alarm switches
mass flow rate = -11 kg/h
the limit is not exceeded, the alarm does not switch
Example
Low Limit: -10 kg/h
mass flow rate = -11 kg/h
the measured value is below the limit, the alarm switches
mass flow rate = -9.9 kg/h
the measured value is not below the limit, the alarm does not switch
R1 Input\Function: QUANT.\Quantity Limit
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