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| Параметр | Значение |
| Общие характеристики | |
| Артикул | 4123 |
| Материал | float: PP (Polypropylene) cable: - PVC version: PVC cable, highly flexible (2 x 0.75 mm ) - PUR version: PUR cable, highly flexible (2 x 0.50 mm ) - CSM/CM version: CSM/CM cable (chlorinated polyethylene, (2 x 0.75 mm )) |
| Ambient temperature | -20 ... 70 °C (-4 ... 158 °F) |
| Storage temperature | -25 ... 70 °C (-13 ... 158 °F) |
| Degree of protection | IP68 |
| Rated voltage | 8.2 V ± 2 V |
| Switching point | switch angle, measured against the horizontal: - upper switch point +15° ±5° - lower switch point -15° ±5° |
| Altitude | ≤ 2000 m above MSL |
| Marking | II 2G Ex ia IIB T5 Gb |
| Reverse polarity protection | yes |
| EU-type examination certificate | TÜV 99 ATEX 1407 |
| Supplementary information | EC-Type Examination Certificate, Statement of Conformity, Declaration of Conformity, Attestation of Conformity and instructions have to be observed where applicable. For information see www.pepperl-fuchs.com. |
| Directive 2014/30/EU | EN 60947-5-2:2007+A1:2012 |
| Directive 2014/34/EU | EN 60079-0:2012+A11:2013 , EN 60079-11:2012 |
| Equipment architecture | A measuring system consists of a float switch LFL1-**-N and a transformer isolated barrier, e. g. KFD2-SR2-Ex1.W. |
| Current consumption | < 1.0 mA unswitched (de-energized at the bottom), > 2.2 mA switched (floated up at the top) |
| Description | Proximity switch with operation ball |
| 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/cm ball design: ≥ 0.6 g/cm |
| 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 lyes mounting: - 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. |
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