Endress+Hauser Promass 40 - Output Signal; Signal on Alarm; Switching Output; Low Flow Cutoff

Promass 40 10 Technical data
Endress+Hauser 51
10.1.4 Output
Output signal 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
• active: 0/4...20 mA, R
L
< 700 Ω (for HART: R
L
≥ 250 Ω)
• passive: 4...20 mA, max. 30 V DC, R
i
≤ 150 Ω
Pulse / frequency output:
Passive, open collector, 30 V DC, 250 mA, galvanically isolated.
• Frequency output: full scale frequency 2...1000 Hz (f
max
= 1250 Hz), on/off ratio 1:1,
pulse width max. 10 s
• Pulse output: pulse value and pulse polarity selectable, max. pulse width adjustable
(0.05...2 s), max. pulse frequency selectable
Signal on alarm
• Current output → failsafe mode selectable
• Pulse/frequency output → failsafe mode selectable
• Status output → “non-conductive” in the event of fault or power supply failure
Load see “Output signal”
Switching output Status output:
Open collector, max. 30 V DC / 250 mA, galvanically isolated.
Configurable for: error messages, Empty Pipe Detection (EPD), flow direction,
limit values
Low flow cutoff Switch points for low flow cut off are selectable
Galvanic isolation All circuits for inputs, outputs, and power supply are galvanically isolated from each
other.
10.1.5 Auxiliary energy
Electrical connections see Page 17 ff.
Supply voltage 85...260 V AC, 45...65 Hz
20...55 V AC, 45...65 Hz
16...62 V DC
Potential equalisation No special measures for potential equalisation are required.
For instruments for use in hazardous areas, observe the corresponding guidelines in the
specific Ex documentation.
Cable entries Power supply and signal cables (inputs/outputs):
• Cable entry M20 x 1.5 (8...12 mm)
• Threads for cable entries, PG 13.5 (5...15 mm), 1/2" NPT, G 1/2"