Liquistation CSF48
20 Endress+Hauser
Mathematical functions (virtual process values)
In addition to "true" process values provided by connected physical sensors or analog inputs, you can
have maximum 6 "virtual" process values calculated using mathematical functions.
The "virtual" process values can be:
• issued via a current output or fieldbus
• used as a control variable
• assigned as a measured variable to a limit contactor
• used as a measured variable to trigger cleaning
• displayed in user-defined measuring menus.
These mathematical functions are possible:
• pH calculation based on two conductivity values as per VGB 405 RL, e.g. in boiler feedwater
• Difference between two measured values from different sources, e.g. for membrane monitoring
• Differential conductivity, e.g. for monitoring the efficiency of ion exchangers
• Degassed conductivity, e.g. for process control systems in power plants
• Redundancy for monitoring two or three redundant measuring sensors
• rH calculation based on measured values of a pH sensor and an ORP sensor
FieldCare and Field Data Manager
Fieldcare
Software based on FDT/DTM technology for configuration and asset management
• Complete device configuration when connected via FXA291 and service interface
• Access to a number of configuration parameters and identification, measuring and diagnostic data
when connected via HART modem
• Logbooks can be downloaded in CSV format or binary format for "Field Data Manager" software
Field Data Manager
Visualization software and database for measuring, calibration and configuration data
• SQL database which is protected against manipulation
• Functions to import, save and print out logbooks
• Load curves to display measured values
a0015032
Data logbook: Graphic display
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