Technical data
Proline Promag 55 PROFIBUS PA
118
Hauser
10
Technical data
10.1
Technical data at a glance
10.1.1
Application
The measuring device described in this Operating Manual is to be used only for measuring the flow
rate of conductive fluids in closed pipes.
A minimum conductivity of 20
μ
S/cm is required for measuring demineralized water. Most fluids
can be metered, provided they have a minimum conductivity of 5
μ
S/cm, for example:
• Acids, alkalis, pastes, paps, pulps, black liquor, green liquor,
• drinking water, wastewater, sewage sludge,
• milk, beer, wine, mineral water, yoghurt, molasses, fruit mash,
• cement, laitance, ore slurry (containing sand or stone), mud, silt.
Resulting from incorrect use or from use other than that designated, the operational safety of the
measuring devices can be suspended. The manufacturer accepts no liability for damages being
produced from this.
Liner specific applications:
• Promag S (DN 15 to 600):
– Polyurethane lining for applications using cold water and for abrasive fluids, e.g. for sludge with
particles smaller than 0.5 mm (<0.02 inch)
– Hard rubber lining for all applications with water (especially for trinking water)
– Natural rubber lining for all water applications for highly abrasive fluids, e.g. for sludge with
particles larger than 0.5 mm (>0.02 inch)
– PTFE lining for standard applications in the paper and food industries
– PFA lining for all applications in the paper and food industries; especially for high process
temperatures and applications with temperature shocks.
10.1.2
Function and system design
Measuring principle
Electromagnetic flow measurement on the basis of Faraday's Law.
Measuring system
The flow measuring system consists of the following components:
• Promag 55 Transmitter
• Promag S sensor (DN 15 to 600 / ½to 24")
• Promag H Sensor (DN 2 to 100 / 1/12 to 4")
Two versions are available:
• Compact version: Transmitter and sensor form a single mechanical unit.
• Remote version: Transmitter and sensor are installed separately.
10.1.3
Input
Measured variable
• Flow rate (proportional to induced voltage)
• Conductivity (without temperature compensation)
Measuring range
• Flow rate: Typical v = 0.01 to 10 m/s (0.03 to 33 ft/s) with the specified measuring accuracy
• Conductivity s = 5 to 2000
μ
S/cm
not for sensors without reference electrode (Promag H, Promag S with brush electrodes)
Operable flow range
Over 1000 : 1
