Proline Promag 50D
4
Hauser
Input
Measured variable
Flow velocity (proportional to induced voltage)
Measuring ranges
Typically v = 0.01 to 10 m/s with the specified accuracy
Operable flow range
Over 1000 : 1
Input signal
Status input (auxiliary input)
HART
• Galvanically isolated
• U = 3 to 30 V DC
• Ri = 5 k
Ω
• Can be configured for: totalizer reset, positive zero return, error message reset.
PROFIBUS DP
• Galvanically isolated
• U = 3 to 30 V
• Ri = 3 k
Ω
• Switching level: 3 to 30 V DC, polarity-independent
• Can be configured for: totalizer reset, positive zero return, error message reset, batching start/stop
(optional), batch totalizer reset (optional)
Output
Output signal
Current output
• Galvanically isolated
• Active/passive can be selected:
– Active: 0/4 to 20 mA, R
L
< 700
Ω
(HART: R
L
≥
250
Ω
)
– Passive: 4 to 20 mA, supply voltage V
S
18 to 30 V DC, R
i
≥
150
Ω
)
• Time constant can be selected (0.01 to 100s)
• Full scale value adjustable
• Temperature coefficient: typ. 0.005% o.r./°C, resolution: 0.5
μ
A
o.r. = of reading
Pulse/frequency output
• Galvanically isolated
• Passive: 30 V DC / 250 mA
• Open collector
• Can be configured as:
– Pulse output
Pulse value and pulse polarity can be selected, max. pulse width adjustable (0.5 to 2000 ms)
– Frequency output
Full scale frequency 2 to 1000 Hz (f
max
= 1.25 Hz), on/off ratio 1:1, pulse width max. 10 s.
PROFIBUS DP interface
• Transmission technology (Physical Layer): RS485 in accordance with ANSI/TIA/EIA-485-A:
1998, galvanically isolated
• Profile version 3.0
• Data transmission rate: 9.6 kBaud to 12 MBaud
• Automatic data transmission rate recognition
• Function blocks: 1 x analog input, 1 x totalizer
• Output data: volume flow, totalizer
• Input data: positive zero return (ON/OFF), totalizer control, value for local display
• Cyclic data transmission compatible with previous model “Promag 33”
• Bus address adjustable via miniature switches or local display (optional) at the measuring device
