Technical information

Ultrasonic Level Sensor LUC-M**
Ambient conditions
DOCT-0805F 01/2010 185414
15
Ambient conditions
Ambient temperature -40 °C ... +80 °C (233 K ... 353 K)
The functionality of the LC display becomes restricted at T
u
< -20 °C (253 K) and T
u
> +60 °C
(333 K).
If the device is operated outdoors in strong sunlight, you should use a protective cover.
Storage temperature -40 °C ... +80 °C (233 K ... 353 K)
Resistance to alternating
temperature cycles
to EN 60068-2-14; Nb test: +80 °C/-40 °C (353 K/233 K), 1 K/min, 100 cycles
Climate class EN 60068-2-38 (test Z/AD) DIN/IEC 68 T2-30Db
Ingress protection • with closed housing, tested according to
– IP68, NEMA 6P (24h at 1.83m under water surface)
–IP66, NEMA 4x
• with open housing: IP20, NEMA 1 (also ingress protection of the display)
"
Caution!
Degree of protection IP68 NEMA 6P applies for M12 PROFIBUS PA plugs only when the
PROFIBUS cable is plugged in.
Vibration resistance EN 60068-2-64/IEC 68-2-64: 20 Hz ... 2000 Hz, 1 ((m/s
2
)
2
/Hz; 3 x 100 min
Electromagnetic
compatibility (EMC)
• interference emission to EN 61326, Equipment Class B.
• interference immunity to EN 61326, appendix A (industrial) and NAMUR recommendation
NE 21 (EMC).
• a standard installation cable is sufficient if only the analogue signal is used. Use a screened
cable when working with a superimposed communication signal (HART).
Process conditions
Process temperature -40°C ... +80°C (233 K ... 353 K)
A temperature sensor is integrated in the sensor for correction for the temperature-dependent time-
of-flight.
Process pressure • LUC-M10/LUC-M20: 0.7 bar ... 3 bar abs.
• LUC-M30/LUC-M40: 0.7 bar ... 2.5 bar abs.