Proline Prosonic Flow 91
Technical data
Hauser
67
9.1.4
Output
Output signal
Current output
• Galvanically isolated
• Full scale value adjustable
• Temperature coefficient: typ. 2
μ
A/°C, resolution: 1.5
μ
A
• Active: 4 to 20 mA, R
L
< 700
(for HART: RL
250
)
Pulse/status output:
• Galvanically isolated
• Open collector
• 30 V DC / 250 mA
• Passive
• Can be configured as:
–
Pulse output
: pulse value and pulse polarity can be selected, max. pulse width adjustable
(5 to 2000 ms), pulse frequency max. 100 Hz
–
Status output
: for example, can be configured for error messages, empty pipe detection, flow
recognition, limit value
Signal on alarm
• Current output, pulse output
Failsafe mode can be selected
• Status output
"Not conductive" in the event of fault or power supply failure
Load
See "Output signal"
Low flow cut off
Low flow cut off
Switch-on point can be selected as required
Galvanic isolation
All circuits for inputs, outputs and power supply are galvanically isolated from each other.
9.1.5
Power supply
Electrical connections
See
Supply voltage
(power supply)
Transmitter
85 to 250 V AC, 45 to 65 Hz
20 to 28 V AC, 45 to 65 Hz
11 to 40 V DC
Sensor
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