Датчик предельной проводимости Conductive Level Limit Switch LKL-P* Pepperl+Fuchs

Описание товара

Directive conformity
Electromagnetic compatibility
	Directive 2014/30/EU	EN 61326-1:2006 , EN 61326-2-3:2006
Low voltage
	Directive 2014/35/EU	EN 61010-1:2001
Conformity
Electromagnetic compatibility		NE 21
Degree of protection		IEC 60529:2001
Vibration resistance		EN 60068-2-64
Climate class		EN 60068, part 2-38 (test Z/AD)
Function and system design
Measuring principle		An alternating voltage exists between the probes in an empty tank. As soon as the conductive liquid in the tank creates a connection between the ground probe and, for example, the maximum probe, a measurable current flows and the device switches. With level limit detection, the device switches back as soon as the liquid clears the maximum probe. With two-point control, the device does not switch back until the max and min probe is cleared. Using alternating voltage prevents corrosion of the probes and electrolytic destruction of the product. The material used for the tank walls is not important for measurement because the system is designed as a closed potential-free circuit between the probes and the electronics. There is absolutely no danger if the probes are touched during operation.
Equipment architecture		probe with integrated electronic insert (compact instrument version) probe without integrated electronic insert (separate instrument version) for one, two or multiple point detection respectively, see section measuring system
Input characteristics
Measured variable		resistance change between two conductors caused by the presence or absence of a conductive product.
Measurement range		The measuring range is dependent on the mounting location of the probes. Rod probes can have a max. length of 4000 mm (13 ft) and rope probes up to 15000 mm (49 ft).
Output characteristics
Output signal		see section electrical connection
Measurement range		A total of four measuring ranges (100 &Omega, 1 k&Omega, 10 k&Omega, 100 k&Omega) can be set via two DIL switches (SENS). The setting on delivery is 100 k&Omega.
Auxiliary energy
Electrical connection		see section electrical connection
Supply voltage		Output E5 (FEW52): supply voltage 10.8 ... 45 V DC load connection: open collector PNP switching voltage: max. 45 V Output WA (FEW54): supply voltage 20 ... 55 V DC or 20 ... 253 V AC, 50/60 Hz peak inrush current: max. 2 A, max. 400 µs output: two potential-free change-over contacts output N1 (FEW58): refer to datasheet of the connected switch amplifier acc. to IEC 60947-5-6 (NAMUR)
Power consumption		Output E5 (FEW52): P < 1.1 W output WA (FEW54): P < 2.0 W
Current consumption		Output E5 (FEW52): I < 25 mA (without load) output WA (FEW54): 60 mA
Measurement accuracy
Reference operating conditions		ambient temperature: 23 °C (296 K), medium temperature: 23 °C (296 K), medium viscosity: medium must release the probe again (drain off), medium pressure pe: 0 bar, probe installation: vertically from above
Maximum measured error		&plusmn 10 % at 0.1 ... 100 k&Omega &plusmn 5 % at 1 ... 10 k&Omega
Non-repeatability		&plusmn 5 % at 0.1 ... 100 k&Omega &plusmn 1 % at 1 ... 10 k&Omega
Hysteresis		-10 % for the max probe, in reference to the switch point, &Deltas function deactivated
Influence of ambient temperature		< 0.05 %/K
Switching time		< 3 s
Operating conditions
Installation conditions
	Mounting location	The rod and rope probes are mounted predominantly in tanks made of plastic or metal.
	Mounting examples	see section example applications
Ambient conditions
	Ambient temperature	-40 ... 70 °C (-40 ... 158 °F) -40 ... 60 °C (233 ... 333 K) for output N1 (FEW58)
	Storage temperature	-40 ... 80 °C (-40 ... 176 °F)
	Climate class	tropicalized
	Shock resistance	practical test
	Vibration resistance	20 ... 2000 Hz, 1 (m/s2)2/Hz
Process conditions
	Medium temperature	-40 ... 100 °C (-40 ... 212 °F)
	Medium pressure	-1 ... 10 bar (-14.5 ... 145 psi)
	Conductivity	&ge 10 &microS
Mechanical specifications
Degree of protection		IP66
Data for application in connection with hazardous areas
EC-Type Examination Certificate		TÜV 03 ATEX 2295
	Group, category, type of protection	II 2G Ex ia/ib IIC T4
Directive conformity
	Directive 2014/34/EU	EN 60079-0:2009 , EN 60079-11:2007
Mechanical construction
Dimensions		LKL-P1: - housing: max. Ø85 mm (3.3 inch), height max. 145 mm (5.7 inch) - rod: length 100 ... 4000 mm (4 in ... 13 ft) LKL-P2: - housing: max. Ø85 mm (3.3 inch), height max. 145 mm (5.7 inch) - rope: length 250 ... 15000 mm (10 in ... 49 ft)
Mass		separate instrument version: - rod, 1 m (3 ft) long, LKL-P1 with 2, 3 or 5 rods: 415 g, 530 g, 760 g - rope, 1 m (3 ft) long, LKL-P2 with 2, 3 or 5 ropes: 390 g, 470 g, 640 g compact instrument version: - rod, 1 m (3 ft) long, LKL-P1 with 2 or 3 rods (600 g/720 g) - rope, 1 m (3 ft) long, LKL-P2 with 2 or 3 ropes (710 g/800 g)
Material		probes: - rods: rod 1.4404/316L, insulation: PP - ropes: rope 1.4571/316Ti, insulation FEP, weight 1.4435/316L housing: - output NA (separate instrument version): housing PPS, cover PBT - output E5/WA/N1 (compact instrument version): housing PBT, cover PBT, adapter PBT process connections: PPS
Certificates and approvals
Overspill protection		see approval (ZE)

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