Standard density/gravity input frozen alarm settings

Standard density/gravity input frozen alarm settings

"R2 Standard density/gravity input frozen" alarm in the Liquid USC application is triggered when the standard density or gravity input value does not change for a specified duration. This indicates a potential issue with the input signal from the measuring device. The configuration parameter for this alarm is the "Input frozen time". This parameter allows you to set the maximum time [s] that the standard density/gravity input value is allowed to remain unchanged before the 'input frozen' alarm is activated.
You can configure this parameter in the following location within the Flow-X Liquid USC application:
• Display → Configuration, Run , Density, Standard density

"R2 Pulse input failure" alarm in the Liquid USC application, based on the provided information, can be defined as a situation where the primary pulse input signal from a 'Smart/Pulse' type flow meter has stopped (reports zero flow rate), while the secondary 'Smart' input is still indicating a non-zero flow rate. This suggests a failure specifically with the pulse signal.
The configuration parameters related to detecting and responding to this potential failure are located within the Flow meter configuration for the respective run (R2).
You can access these settings via:
•Display → Configuration, Run 2, Flow meter
Within this section, the following parameters are relevant to understanding and potentially configuring aspects related to pulse input failure detection:
•Meter type: This needs to be configured as 'Smart / pulse' (value 3) for this alarm logic to be applicable.
•Pulse input is primary (FT_PLS_PRI): This setting determines if the pulse signal is the primary source for totalization. The alarm condition checks if this is enabled (set to 'Yes' or 1).
•Fall back to secondary flow signal: This setting (if enabled) defines whether the flow computer should switch to the secondary 'Smart' signal if the primary pulse signal fails. While not directly configuring the alarm, it dictates the system's behavior upon detecting a potential pulse failure.
•Flow deviation limit smart / pulses: This parameter sets the threshold for the relative deviation between the smart and pulse inputs. If the difference exceeds this limit, a 'Smart / pulse flow deviation' alarm is raised. The 'Pulse input failure' condition (pulse rate zero, smart rate non-zero) would likely trigger this deviation alarm if enabled.
•Settings within Pulse input  configuration (where <y> is the number of the pulse input channel): These settings include parameters for detecting issues with the pulse signal itself, such as:
◦Lowest discernable input frequency: Sets the minimum frequency the flow computer recognizes. A frequency below this might be considered a failure of the pulse signal to register flow.
◦Error pulses limit, Good pulses reset limit, Error rate limit, and Dual pulse fidelity threshold: These are specific to dual pulse inputs (fidelity levels A and B) and help detect discrepancies or errors within the pulse signals. While the "R2 Pulse input failure" focuses on a zero reading when it should be non-zero, these settings contribute to the overall health monitoring of the pulse input.