Endress+Hauser Proline Prowirl 73 - Output Specifications

Technical data Proline Prowirl 73
80 Endress+Hauser
10.1.4 Output
Outputs, general The following measured variables can generally be output via the outputs.
If configured, the following calculated measured variables can also be displayed via the local display:
•Density
• Specific enthalpy
• Saturation steam pressure (for saturated steam)
• Z-factor
• Flow velocity
Output signal Current output:
• 4 to 20 mA with HART
• Full scale value and time constant (0 to 100 s) can be set
• Temperature coefficient: typically 0.005% o.r./°C (o.r. = of reading)
Frequency output, pulse/status output
Frequency output (optional): open collector, passive, galvanically isolated
• Non-Ex, Ex-d/XP version: U
max
= 36 V, with 15 mA current limiting, R
i
= 500 
• Ex-i/IS and Ex-n version: U
max
= 30 V, with 15 mA current limiting, R
i
= 500 
The pulse/status output can be configured as:
•Frequency output:
End frequency 0 to 1000 Hz (f
max
= 1250 Hz)
• Pulse output:
– Pulse value and polarity can be selected (ä 128)
– Pulse width adjustable (0.005 to 2 s)
– Pulse frequency max. 100 Hz
• Status output:
Can be configured for error messages or flow values, temperature values and pressure limit values
• Vortex frequency:
– Direct output of unscaled vortex pulses 0.5 to 2850 Hz
(e.g. for connecting to a flow computer RMC621)
–Pulse ratio 1:1
• PFM signal (pulse/frequency modulation):
For external connection with flow computer RMC or RMS621 (ä 29).
Measured variable Current output Frequency output Pulse output Status output
Volume flow If configured If configured If configured Limit value
(flow or totalizer)
Temperature If configured If configured – Limit value
Mass flow If configured If configured If configured Limit value
(flow or totalizer)
Corrected volume flow If configured If configured If configured Limit value
(flow or totalizer)
Heat flow
(power)
If configured If configured If configured Limit value
(flow or totalizer)
Saturation steam
pressure (only for
saturated steam)
If configured If configured – Limit value
(pressure)
Process pressure (if read
in externally)
If configured If configured – Limit value
(pressure)