Proline Promag 50H, 53H
4 Endress+Hauser
Input
Measured variable Flow velocity (proportional to induced voltage)
Measuring ranges Measuring ranges for liquids
Typically v = 0.01 to 10 m/s (0.03 to 33 ft/s) with the specified accuracy
Operable flow range Over 1000 : 1
Input signal Status input (auxiliary input)
• U = 3 to 30 V DC, R
i
= 5 kΩ, galvanically isolated
• Configurable for: totalizer(s) reset, measured value suppression, error-message reset
Status input (auxiliary input) with PROFIBUS DP and MODBUS RS485
• U = 3 to 30 V DC, R
i
= 3 kΩ, galvanically isolated
• Switching level: 3 to 30 V DC, independent of polarity
• Configurable for: totalizer(s) reset (MODBUS RS485 only), measured value suppression, error-message reset,
batching start/stop (optional), batch totalizer reset (optional)
Current input (only Promag 53)
• active/passive selectable, galvanically isolated, full scale value selectable, resolution: 3 μA,
temperature coefficient: typ. 0.005% o.r./°C (o.r. = of reading)
• active: 4 to 20 mA, R
i
≤ 150 Ω, max. 24 V DC, short-circuit-proof
• passive: 0/4 to 20 mA, R
i
< 150 Ω, max. 30 V DC
Output
Output signal Promag 50
Current output
active/passive selectable, galvanically isolated, time constant selectable (0.01 to 100 s),
full scale value selectable, temperature coefficient: typ. 0.005% o.r./°C (o.r. = of reading), resolution: 0.5 μA
• active: 0/4 to 20 mA, R
L
< 700 Ω (HART: R
L
≥ 250 Ω)
• passive: 4 to 20 mA, operating voltage V
S
: 18 to 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 to 1000 Hz (f
max
= 1250 Hz), on/off ratio 1:1, pulse width max. 10s
• Pulse output: pulse value and pulse polarity selectable, max. pulse width configurable (0.5 to 2000 ms)
PROFIBUS DP interface
• Transmission technology (Physical Layer): RS485 in accordance with ANSI/TIA/EIA-485-A: 1998,
galvanically isolated
• Profil version 3.0
• Data transmission rate: 9,6 kBaud to 12 MBaud
• Automatic data transmission rate recognition
• Function blocks: 1 × analog Input, 1 × 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
PROFIBUS PA interface
• Transmission technology (Physical Layer): IEC 61158-2 (MBP), galvanically isolated
• Profil version 3.0
• Current consumption: 11 mA
• Permissible supply voltage: 9 to 32 V
• Bus connection with integrated reverse polarity protection
• Error current FDE (Fault Disconnection Electronic): 0 mA
• Function blocks: 1 × analog input, 2 × totalizer
• Output data: volume flow, totalizer
• Input data: positive zero return (ON/OFF), control totalizer, 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
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