Technical data Proline Prosonic Flow P 500 HART
194 Endress+Hauser
16.3 Input
Measured variable Direct measured variables
• Volume flow
• Flow velocity
• Sound velocity
Calculated measured variables
Mass flow
Measuring range v = 0 to 15 m/s (0 to 50 ft/s)
Measuring range depending on the sensor version.
Operable flow range Over 150 : 1
Input signal External measured values
The measuring device provides optional interface that enable the transmission of
externally measured variables (temperature, density) to the measuring device:
• Analog inputs 4-20 mA
• Digital inputs (via HART input or Modbus)
Various temperature measuring devices can be ordered from Endress+Hauser: see
"Accessories" section → 192
HART protocol
The measured values are written from the automation system to the measuring device via
the HART protocol. The temperature and density measuring device must support the
following protocol-specific functions:
• HART protocol
• Burst mode
Current input
The measured values are written from the automation system to the measuring device via
the current input → 194.
Current input 0/4 to 20 mA
Current input 0/4 to 20 mA (active/passive)
Current span • 4 to 20 mA (active)
• 0/4 to 20 mA (passive)
Resolution 1 µA
Voltage drop Typically: 0.6 to 2 V for 3.6 to 22 mA (passive)
Maximum input voltage ≤ 30 V (passive)
Open-circuit voltage ≤ 28.8 V (active)
Possible input variables • Temperature
• Density
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