浮子液位测量仪 LFL1-**-N
来源：未知 日期：2017/02/16 浏览量：次
● Switch element: Float switch with initiator, mercury-free
● Electrical connections in acc. with NAMUR for hazardous area
● Limit value detection for fluids
● Sleeve design: small diameter, mounting through G1 tap hole possible
● Ball design: high buoyancy
| Supply： | ||
|---|---|---|
| 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 | |
| Directive conformity： | ||
| Electromagnetic compatibility | ||
| Directive 2014/30/EU | EN 60947-5-2:2007+A1:2012 | |
| Conformity： | ||
| Degree of protection | IEC 60529:2001 | |
| Application： | ||
| Description | Proximity switch with operation ball | |
| Function and system design： | ||
| Equipment architecture |
A measuring system consists of a float switch LFL1-**-N and a transformer isolated barrier, e. g. KFD2-SR2-Ex1.W. |
|
| Operating conditions： | ||
| Installation conditions | ||
| 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. |
|
| Process conditions | ||
| 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 conditions： | ||
| Ambient temperature | -20 ... 70 °C (-4 ... 158 °F) | |
| Storage temperature | -25 ... 70 °C (-13 ... 158 °F) | |
| Altitude | ≤ 2000 m above MSL | |
| Mechanical specifications： | ||
| Degree of protection | IP68 | |
| Data for application in connection with hazardous areas： | ||
| EC-Type Examination Certificate | TÜV 99 ATEX 1407 | |
| Group, category, type of protection |
 II 2G Ex ia IIB T5 |
|
| Directive conformity | ||
| Directive 2014/34/EU | EN 60079-0:2012+A11:2013 , EN 60079-11:2012 | |
| Mechanical construction： | ||
| 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) |
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