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LFL2-**-U Float Switch

主要优势一览

  • Switch element: microswitch, mercury-free
  • Limit value detection for fluids
  • Sleeve design: small diameter, mounting through G1 tap hole possible
  • Ball design: high buoyancy
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Product photo: Float Switch LFL2-**-U
Product photo: Float Switch LFL2-**-U
Approval
Product Compliance: Europe – CE
注意

在转换前以倍加福有限公司或倍加福股份公司名义发布的所有产品文档（如证书、符合性声明等）也适用于倍加福欧洲公司。

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数据表功能分类Product DocumentationDesign / Simulation认证

LFL2-**-U 技术数据

Construction typemicroswitch with switching ball, change-over contact
SeriesLFL2-**-U
Contact loading250 V AC/3 A; 150 V DC/0.25 A resistive load; 60 V DC/1 A resistive load
Rated insulation voltage300 V
Pulse withstand voltage4 kV
Electrical life≥ 5 x 104 switching cycles
Connectionvolt-free change-over contact
Low voltage
Directive 2014/35/EUEN 60947-5-1:2017
Degree of protectionIEC 60529:2001
Equipment architectureThis device may be used with any sequential circuit, as long as the circuit can support the electrical circuit values of the switching elements.
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 lyes
- TPK 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.
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
Ambient temperaturePVC version: 5 ... 70 °C (41 ... 158 °F)
PUR version: 5 ... 70 °C (41 ... 158 °F)
CSM/CM version: -20 ... 70 °C (-4 ... 158 °F)
TPK version: 5 ... 70 °C (41 ... 158 °F)
Storage temperature-25 ... 70 °C (-13 ... 158 °F)
Altitude≤ 2000 m above MSL
Degree of protectionIP68
Materialfloat: PP (Polypropylene)
cable:
- PVC version: PVC cable, highly flexible (3 x 0.75 mm2)
- PUR version: PUR cable, highly flexible (3 x 0.50 mm2)
- CSM/CM version: CSM/CM cable (chlorinated polyethylene, (3 x 0.75 mm2))
- TPK version: TPK cable, (3 x 0.75 mm2)
Switching pointswitch angle, measured against the horizontal:
- upper switch point +25° ±10°
- lower switch point -14° ±10°
Supplementary informationObserve 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
一般说明
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