Endress+Hauser FMU 40 - Performance Characteristics

Prosonic M
Endress+Hauser
7
Power consumption 2-wire, 51 mW to 800 mW
4-wire AC, maximum 7W
4-wire DC FMU 40/41, 330 mW to 830 mW
4-wire DC FMU 43, 600 mW to 1 W
HART
®
, 3.6 to 22 mA
PROFIBUS-PA, maximum 13 mA
Foundation Fieldbus, maximum 15 mA
47 to 125 Hz: Vpp = 200 mV (measured at 500 W)
500 Hz to 10 kHz: Vrms = 2.2 mV (measured at 500 W)
With 4-wire units, the evaluation electronics and power supply voltage are
galvanically isolated from each other
Current consumption (2-wire units)
HART
®
ripple
Maximum noise HART
®
Galvanic isolation
Performance characteristics
• Temperature = 68°F (20°C)
• Pressure = 14.7 psia (1013 mbar abs.)
• Humidity = 50%
• Ideal reflective surface (calm, smooth fluid surface)
• No interference reflections within signal beam area
• Set application parameters:
Tank shape = flat ceiling
Medium property = liquid
Process conditions = calm surface
Typical specifications for reference operating conditions (include linearity,
repeatability, and hysteresis):
FMU 40 / 41: ± 0.08” (2 mm) or 0.2% of set measuring range, which ever is greater
FMU 43: ± 0.15” (4 mm) or 0.2% of set measuring range, which ever is greater
FMU 40 / 41: 0.04” (1 mm)
FMU 43: 0.08” (2 mm)
The reaction time depends on the parameter settings (minimum 0.5 seconds for
4-wire devices, minimum 2 seconds for 2-wire devices)
Reference operating conditions
Measuring error
Measured value resolution
Reaction time