Endress+Hauser Proline Promass A 100 PROFINET Operating Instructions Manual page 131

Proline Promass A 100 PROFINET
Operable flow range
Input signal
Output signal
Signal on alarm
Endress+Hauser
2. The smaller value is the value that must be used.
Recommended measuring range
Flow limit →  143
Over 1000 : 1.
Flow rates above the preset full scale value do not override the electronics unit, with the
result that the totalizer values are registered correctly.
External measured values
To increase the measurement accuracy of certain measured variables or to calculate the
corrected volume flow for gases, the automation system can continuously write different
measured values to the measuring instrument:
• Operating pressure to increase measurement accuracy (Endress+Hauser recommends
the use of a pressure measuring instrument for absolute pressure, e.g. Cerabar M or
Cerabar S)
• Medium temperature to increase measurement accuracy (e.g. iTEMP)
• Reference density for calculating the corrected volume flow for gases
Various pressure transmitters and temperature measuring instruments can be
ordered from Endress+Hauser: see "Accessories" section →  128
It is recommended to read in external measured values to calculate the following measured
variables:
• Mass flow
• Corrected volume flow
Digital communication
The measured values are written by the automation system via PROFINET.
16.4 Output
PROFINET
Standards
Depending on the interface, failure information is displayed as follows.
PROFINET
Device diagnostics
Local display
Plain text display
Backlight
Status signal as per NAMUR recommendation NE 107
In accordance with IEEE 802.3
According to "Application Layer protocol for decentralized periphery", Version 2.3
With information on cause and remedial measures
Red backlighting indicates a device error.
Technical data
131