Endress+Hauser MODBUS RS485 - Technical Data; Technical Data at a Glance; Application; Function and System Design

Technical data Proline Promag 53 MODBUS RS485
116 Endress+Hauser
10 Technical data
10.1 Technical data at a glance
10.1.1 Application
→ ä 5
10.1.2 Function and system design
Measuring principle Electromagnetic flow measurement on the basis of Faraday’s Law.
Measuring system → ä 7
10.1.3 Input variables
Measured variable Flow rate (proportional to induced voltage)
Measuring range Typically v = 0.01 to 10 m/s (0.03 to 33 ft/s) with the specified measuring accuracy
Operable flow range Over 1000 : 1
Input signal Status input (auxiliary input):
U = 3 to 30 V DC, R
i
= 3 kΩ, galvanically isolated.
Switch level: ±3 to ±30 VDC, independent of polarity
10.1.4 Output variables
Output signal Current output
Active/passive selectable, galvanically isolated, time constant selectable (0.01 to 100 s),
Full scale value selectable, temperature coefficient: typically 0.005% o.r./°C (0.003 % o.f.s/°F),
resolution: 0.5 μA
• Active: 0/4 to 20 mA, R
L
< 700 Ω
• Passive: 4 to 20 mA; supply voltage V
S
18 to 30 V DC; R
i
≥ 150 Ω
Pulse / frequency output:
Active/passive selectable, galvanically isolated
• Active: 24 V DC, 25 mA (max. 250 mA during 20 ms), R
L
> 100 Ω
• Passive: open collector, 30 V DC, 250 mA
• Frequency output: full scale frequency 2 to 10000 Hz (f
max
= 12500 Hz), on/off ratio 1:1, pulse
width max. 2 s
• Pulse output: pulse value and pulse polarity selectable, pulse width configurable (0.05 to
2000 ms)