Proline Promass F 500 Modbus RS485 Technical data
Endress+Hauser 187
Voltage drop For 22.5 mA: ≤ DC 2 V
Output frequency Adjustable: 0 to 1 000 Hz
Damping Adjustable: 0 to 999 s
Pulse/pause ratio 1:1
Assignable measured
variables
• Mass flow
• Volume flow
• Corrected volume flow
• Density
• Reference density
• Temperature
The range of options increases if the measuring device has one or more
application packages.
Relay output
Function Switch output
Version Relay output, galvanically isolated
Switching behavior Can be set to:
• NO (normally open), factory setting
• NC (normally closed)
Maximum switching
capacity (passive)
• DC 30 V, 0.1 A
• AC 30 V, 0.5 A
Assignable functions • Off
• On
• Diagnostic behavior
• Limit value
– Mass flow
– Volume flow
– Corrected volume flow
– Density
– Reference density
– Temperature
– Totalizer 1-3
• Flow direction monitoring
• Status
– Partially filled pipe detection
– Low flow cut off
The range of options increases if the measuring device has one or more
application packages.
User configurable input/output
One specific input or output is assigned to a user-configurable input/output (configurable
I/O) during device commissioning.
The following inputs and outputs are available for assignment:
• Choice of current output: 4 to 20 mA (active), 0/4 to 20 mA (passive)
• Pulse/frequency/switch output
• Choice of current input: 4 to 20 mA (active), 0/4 to 20 mA (passive)
• Status input
The technical values correspond to those of the inputs and outputs described in this
section.
Signal on alarm Depending on the interface, failure information is displayed as follows:
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