Siemens SITRANS F TRANSMAG 2, Operating Instructions Manual, Page: 85 / 126

Technical specifications
11
Mode of operation
Mode of operation and design
Measuring principle
Electromagnetic with pulsed alternating field (PAC)
Magnetic field excitation Automatic power supply synchronization
50 Hz AC power supply
• Bipolar 16.7 Hz
• Bipolar with prepulse 10 Hz
• Unipolar 8,33 Hz
60 Hz AC power supply
• Bipolar 20 Hz
• Bipolar with prepulse 12 Hz
• Unipolar 10 Hz
Measuring accuracy under reference conditions
Measuring tolerance of pulse output
At v > 0.25 m/s (0.82 ft/s)
≦ 0.5 % of the measured value, ± 0.0012 m/s (0.0039 ft/s)
At v < 0.25 m/s (0.82 ft/s) ≦ 0.0025 m/s (0.0082 ft/s)
Measuring tolerance of analog output 4
to 20 mA Same as pulse output; plus ± 0.1 % conversion error ± 20 μA
Repeatability 0.2 % of the measured value
Reference conditions
Reference conditions
Medium process temperature
+25 °C ± 5 °C (77 °F ± 9 °F)
Ambient temperature +25 °C ± 5 °C (77 °F ± 9 °F)
Warm-up time min. 30 min
Installation conditions
Inlet pipe section ≧ 10 x DN
Outlet pipe section ≧ 5 x DN; installed centered to pipe
Medium water without gaseous and solid parts
Conductivity > 200 μS/cm
Magnetic current frequency bipolar with prepulse
TRANSMAG 2 with MAG 911/E
Operating Instructions, 03/2021, A5E00102775-AC
85