Technical information

Ultrasonic Level Sensor LUC-M**
Auxiliary energy
DOCT-0805F 01/2010 185414
9
Cable entry • cable gland: M20 x 1.5 (recommended cable diameter 6 mm ... 10 mm (0.24 in ... 0.4 in))
• cable entry G½ or ½ NPT
• PROFIBUS PA M12 plug
Terminals Cable cross section 0.5 mm
2
... 2.5 mm
2
(20 AWG ... 14 AWG)
Power consumption
Current consumption
(2-wire instruments)
HART ripple 47 Hz ...125 Hz: U
pp
= 200 mV (measured at 500 Ω)
Max. noise HART 500 Hz ...10 kHz: U
rms
= 2.2 mV (measured at 500 Ω)
Galvanic isolation With 4-wire devices, the evaluation electronics and mains voltage are galvanically isolated from
each other.
Version Power consumption
2-wire 51 mW ... 800 mW
4-wire AC max. 4 VA
4-wire DC; LUC-M10/LUC-M20 330 mW ... 830 mW
4-wire DC; LUC-M30/LUC-M40 600 mW ... 1 W
Communication Current consumption
HART 3.6 mA ... 22 mA
PROFIBUS PA max. 13 mA