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TECHNICAL DATA
规格参数
General specifications
| Construction type | Inductive sensor with switching ball |
|---|---|
| Series | LFL1-**-N |
| Rated voltage | 8.2 V ± 2 V |
| Current consumption | < 1.0 mA unswitched (de-energized at the bottom),> 2.2 mA switched (floated up at the top) |
| Reverse polarity protection | yes |
| Connection | NAMUR acc. to EN 60947-5-6 , 2-wire |
| Electromagnetic compatibility | Electromagnetic compatibility |
| Directive 2014/30/EUEN 60947-5-2:2007+A1:2012 | Directive 2014/30/EUEN 60947-5-2:2007+A1:2012 |
| Directive 2014/30/EU | EN 60947-5-2:2007+A1:2012 |
| Degree of protection | IEC 60529:2001 |
| Equipment architecture | A measuring system consists of a float switch LFL1-**-N and a transformer isolated barrier,e. g. KFD2-SR2-Ex1.W. |
| Installation conditions | Installation conditions |
| Installation instructionsrange of application and minimum length between mounting and float:- PVC version: ≥ 50 mm (2 inch), preferred for water- PUR version: ≥ 100 mm (4 inch), preferred for fuels, heating oils, oily fluids- CSM/CM version: ≥ 100 mm (4 inch), preferred for many acids and lyesmounting:- The float switch is mounted either from sidewards through a cable gland ≥ G1A into the vessel or- by means of a counter weight or rods (e. g. float switch combination) from the top.The pivot of the cable should always be horizontal. | Installation instructionsrange of application and minimum length between mounting and float:- PVC version: ≥ 50 mm (2 inch), preferred for water- PUR version: ≥ 100 mm (4 inch), preferred for fuels, heating oils, oily fluids- CSM/CM version: ≥ 100 mm (4 inch), preferred for many acids and lyesmounting:- The float switch is mounted either from sidewards through a cable gland ≥ G1A into the vessel or- by means of a counter weight or rods (e. g. float switch combination) from the top.The pivot of the cable should always be horizontal. |
| Process conditions | Process conditions |
| Process pressure (static pressure)sleeve design: ≤ 3 bar at 20 °C (68 °F) ball design: ≤ 2 bar at 20 °C (68 °F)Densitysleeve design: ≥ 0.8 g/cm3 ball design: ≥ 0.6 g/cm3 | Process pressure (static pressure)sleeve design: ≤ 3 bar at 20 °C (68 °F) ball design: ≤ 2 bar at 20 °C (68 °F)Densitysleeve design: ≥ 0.8 g/cm3 ball design: ≥ 0.6 g/cm3 |
| Installation instructions | range of application and minimum length between mounting and float:- PVC version: ≥ 50 mm (2 inch), preferred for water- PUR version: ≥ 100 mm (4 inch), preferred for fuels, heating oils, oily fluids- CSM/CM version: ≥ 100 mm (4 inch), preferred for many acids and lyesmounting:- The float switch is mounted either from sidewards through a cable gland ≥ G1A into the vessel or- by means of a counter weight or rods (e. g. float switch combination) from the top.The pivot of the cable should always be horizontal. |
| Process pressure (static pressure) | sleeve design: ≤ 3 bar at 20 °C (68 °F) ball design: ≤ 2 bar at 20 °C (68 °F) |
| Density | sleeve design: ≥ 0.8 g/cm3 ball design: ≥ 0.6 g/cm3 |
| Ambient temperature | -20 ... 70 °C (-4 ... 158 °F) |
| Storage temperature | -25 ... 70 °C (-13 ... 158 °F) |
| Altitude | ≤ 2000 m above MSL |
| Degree of protection | IP68 |
| EU-type examination certificate | TÜV 99 ATEX 1407 |
| Marking II 2G Ex ia IIB T5 Gb | Marking II 2G Ex ia IIB T5 Gb |
| Directive conformity | Directive conformity |
| Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-11:2012 | Directive 2014/34/EUEN 60079-0:2012+A11:2013 , EN 60079-11:2012 |
| Marking | II 2G Ex ia IIB T5 Gb |
| Directive 2014/34/EU | EN 60079-0:2012+A11:2013 , EN 60079-11:2012 |
| Material | float: PP (Polypropylene)cable:- PVC version: PVC cable, highly flexible (2 x 0.75 mm2)- PUR version: PUR cable, highly flexible (2 x 0.50 mm2)- CSM/CM version: CSM/CM cable (chlorinated polyethylene, (2 x 0.75 mm2)) |
| Switching point | switch angle, measured against the horizontal:- upper switch point +15° ±5°- lower switch point -15° ±5° |
| Supplementary information | Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com. |
| Designation | - LFL-Z231, counter nut, G1A, PVC- LFL-Z32, counter weight, grey cast iron with plastic coating (Polycarbonate)- LFL-Z33, counter weight, grey cast iron with ECTFE coating (Halar)- LFL-Z131, gland screw connection G1A, PVC- LFL-Z132, gland screw connection G1A, brass- LFL-Z161, gland screw connection G2A, PVC- LFL-Z431, gland screw connection 1 NPT, PVC- LFL-Z461, gland screw connection 2 NPT, PVC |
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