Ultrasonic level sensor LUC-M**

• Quick and simple commissioning via menu-guided onsite operation with four-line display
• Envelope curves on the on-site display for simple diagnosis
• Linearization function (до 32 points) for conversion of the measured value into any unit of length, volume or flow rate
• Non-contact measurement method minimizes service requirements
• Optional remote display and operation (до 20 m from transmitter)
• Integrated temperature sensor for automatic correction of the temperature dependent sound velocity

Function and system design
Measuring principle		The sensor of the LUC-M** transmits ultrasonic pulses in the direction of the product surface. There, they are reflected back and received by the sensor. The LUC-M** measures the time between pulse transmission and reception. The instrument uses the time (and the velocity of sound) to calculate the distance between the sensor membrane and the product surface. As the device knows the empty distance from a user entry, it can calculate the level.
Equipment architecture		4 ... 20 mA output with HART Протокол system integration via PROFIBUS PA
Input characteristics
Measured variable		distance between the sensor membrane and the product surface using the linearization function, the device calculate - level in any units - volume in any units - flow across measuring weirs or open channels in any units
Measurement range		LUC-M10: max. 5 m (16.4 ft) in fluids and 2 m (6.6 ft) in bulk materials LUC-M20: max. 8 m (26.2 ft) in fluids and 3,5 m (11.5 ft) in bulk materials LUC-M30: max. 15 m (49.2 ft) in fluids and 7 m (23 ft) in bulk materials LUC-M40: max. 10 m (32.8 ft) in fluids and 5 m (16.4 ft) in bulk materials
Output characteristics
Output signal		according to the instrument version: - 4 ... 20 mA with HART Протокол - PROFIBUS PA
Auxiliary energy
Electrical connection		terminal compartment: In the F12 housing, the terminals are located underneath the housing cover, in the T12 housing, they are under the cover of the separate terminal compartment. cable gland: M20 x 1.5 (recommended cable diameter 6 ... 10 mm (0.24 ... 0.4 in)) cable entry G1/2 or 1/2 NPT PROFIBUS PA: M12 plug connector
Supply voltage		2-wire HART (standard): - current consumption 4 ... 20 mA - min. terminal voltage 14 V (at 4 mA), 8 V (at 20 mA) - max. terminal voltage 36 V 4-wire HART: - DC version: voltage 10.5 ... 32 V, max. load 600 &Omega- - AC version: 90 ... 253 V, max. load 600 &Omega- PROFIBUS PA: 9 ... 32 V DC for additional information see technical information
Потребляемая мощность		2-wire: 51 ... 800 mW 4-wire AC: max. 4 VA 4-wire DC, LUC-M10/LUC-M20: 330 ... 830 mW 4-wire DC, LUC-M30/LUC-M40: 0.6 ... 1 W
Current consumption		2-wire devices: - HART: 3.6 ... 22 mA - PROFIBUS PA: max. 13 mA
Operating conditions
Ambient conditions
	Ambient temperature	-40 ... 80 °C (-40 ... 176 °F) , For further information see technical information.
	Storage temperature	-40 ... 80 °C (-40 ... 176 °F)
Физические/механические параметры
Стандарты защищенности		with closed housing, tested according to - IP68, NEMA 6P (24 h at 1.83 m under water surface) - IP66, NEMA 4X with open housing: IP20, NEMA 1 (also ingress protection of the display)
Mechanical construction
Dimensions		see section dimensions
Масса		LUC-M10: приблизительно 2.5 kg LUC-M20: приблизительно 2.6 kg LUC-M30: приблизительно 3.5 kg LUC-M40: приблизительно 3 kg
Материал корпуса		material in contact with process: - LUC-M10, LUC-M20: sensor PVDF, seal EPDM - LUC-M30: sensor UP and Нержавеющая сталь 1.4571/316Ti, seal EPDM, flange PP or Нержавеющая сталь 1.4571/316Ti - LUC-M40: sensor PVDF, seal Viton or EPDM, flange PP, PVDF or Нержавеющая сталь 1.4535/316L housing: - aluminium, seawater resistant, chromed, powder-coated cover: - aluminium, for version without on-site display - inspection glass for version with on-site display
Certificates and Сертификаты
Ex approval		KEMA 05 ATEX 1111, KEMA 05 ATEX 1112 , for additional certificates see www.pepperl-fuchs.com
Type of protection		II 1/2G or II 2G EEx ia IIC T6 (KEMA 05 ATEX 1111) II 1/2G or II 2G EEx d [ia] IIC T6 (KEMA 05 ATEX 1111) II 1/2G or II 2G EEx em [ia] IIC T6 (KEMA 05 ATEX 1111) II 1/2D or II 2D or II 1/3D or II 3D T115°C or T100°C or T95°C (KEMA 05 ATEX 1111) II 1/2D or II 2D or II 1/3D or II 3D T115°C or T83°C or T84°C or T86°C (KEMA 05 ATEX 1112) II 3G EEx nA II T6

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