Endress+Hauser Proline Promag L 400 - Technical Data; Application Scope

Technical data Proline Promag L 400 PROFIBUS DP
122 Endress+Hauser
16 Technical data
16.1 Application
The measuring device described in these Instructions is intended only for flow
measurement of liquids with a minimum conductivity of 5 μS/cm.
Depending on the version ordered, the measuring device can also measure potentially
explosive, flammable, poisonous and oxidizing media.
To ensure that the device remains in proper operating condition for its service life, use the
measuring device only for media against which the process-wetted materials are
adequately resistant.
16.2 Function and system design
Measuring principle Electromagnetic flow measurement on the basis of Faraday's law of magnetic induction.
Measuring system The device consists of a transmitter and a sensor.
Two device versions are available:
• Compact version - the transmitter and sensor form a mechanical unit.
• Remote version – the transmitter and sensor are mounted separately from one another.
For information on the structure of the device (→  12)
16.3 Input
Measured variable Direct measured variables
• Volume flow (proportional to induced voltage)
• Electrical conductivity
Calculated measured variables
Mass flow
Measuring range Typically v = 0.01 to 10 m/s (0.03 to 33 ft/s) with the specified accuracy
Electrical conductivity: 5 to 10 000 µS/cm
Flow characteristic values in SI units
Nominal
diameter
Recommended
flow
Factory settings
min./max. full scale value
(v ~ 0.3/10 m/s)
Full scale value current
output
(v ~ 2.5 m/s)
Pulse value
(~ 2 pulse/s)
Low flow cut off
(v ~ 0.04 m/s)
[mm] [in] [m
3
/h] [m
3
/h] [m
3
] [m
3
/h]
50 2 35 to 1 100 dm
3
/min 300 dm
3
/min 2.5 dm
3
5 dm
3
/min
65 – 60 to 2 000 dm
3
/min 500 dm
3
/min 5 dm
3
8 dm
3
/min
80 3 90 to 3 000 dm
3
/min 750 dm
3
/min 5 dm
3
12 dm
3
/min
100 4 145 to 4 700 dm
3
/min 1 200 dm
3
/min 10 dm
3
20 dm
3
/min
125 – 220 to 7 500 dm
3
/min 1 850 dm
3
/min 15 dm
3
30 dm
3
/min