Output - Endress+Hauser PROline prosonic flow 90 Operating Instructions Manual

10 Technical data
Output signal
Signal on alarm
Load
Switching output
Low flow cutoff
Galvanic isolation
90
10.1.4

Output

Current output:
Active/passive selectable, galvanically isolated, time constant selectable (0.05...100 s),
full scale value selectable, temperature coefficient: typically 0.005% o.r./°C,
resolution: 0.5 µA.
x active: 0/4...20 mA, R
L
x passive: 4...20 mA, max. 30 V DC, R
Pulse/frequency output:
Passive, open collector, 30 V DC, 250 mA, galvanically isolated.
x Frequency output: full-scale frequency 2...1000 Hz (f
on/off ratio 1:1, pulse width max. 10 s
x Pulse output: pulse value and pulse polarity selectable, max. pulse width adjustable
(0.05...2 s), max. pulse frequency selectable
x Current output o failsafe mode selectable (e.g. in accordance with NAMUR
Recommendation NE 43)
x Pulse/frequency output o failsafe mode selectable
x Status output o "not conductive" in the event of fault or power supply failure
Detailed data o Page 80
see "Output signal"
Status output:
Open collector, max. 30 V DC / 250 mA, galvanically isolated
Configurable for: error messages, flow direction, limit values
Switch points for low flow cutoff are selectable
All circuits for inputs, outputs, and power supply are galvanically isolated from each
other.
< 700 : (for HART: R t 250 : )
L
d 150 :
i
PROline Prosonic Flow 90
= 1250 Hz),
max
Endress+Hauser