Endress+Hauser NRF81 - Page 140

Operating menu Tankside Monitor NRF81
140 Endress+Hauser
Option Current range for process
variable
Lower alarm signal level Upper alarm signal level
4...20 mA US 3.9 to 20.8 mA < 3.6 mA > 21.95 mA
Fixed current Constant current, defined in the Fixed current parameter (→  140).
In the case of an error, the output current assumes the value defined in the Failure
mode parameter (→  141).
Fixed current 
Navigation  Setup → Advanced setup → Input/output → Analog I/O → Fixed current
Prerequisite Current span (→  139) = Fixed current
Description Defines the fixed output current.
User entry 4 to 22.5 mA
Factory setting 4 mA
Additional information
Read access Operator
Write access Maintenance
Analog input source 
Navigation  Setup → Advanced setup → Input/output → Analog I/O → Analog input source
Prerequisite • Operating mode (→  138) = 4..20mA output or HART slave +4..20mA output
• Current span (→  139) ≠ Fixed current
Description Defines the process variable transmitted via the AIO.
Selection • None
• Tank level
• Tank level %
• Tank ullage
• Tank ullage %
• Measured level
• Distance
• Displacer position
• Water level
• Upper interface level
• Lower interface level
• Bottom level
• Tank reference height
• Liquid temperature
• Vapor temperature
• Air temperature