LEFOO LFS-03 Automatic Sliding Door Differential Positive Negative Vacuum Miniaure Pressure Vacuum Air Switch

Product Description

1. Product Pictures:

2. Product Specifications:

LFS-03 vacuum air  switch can be is applied to detection positive or negative pressure. It can be used as a gauge or differential pressure switch with almost no hysteresis. If 2 switch points are required, 2 pressure switches with different calibrations should be employed. The method of fixing the tab terminals to the switch body does not allow for absolute air sealing. The switch is therefore not recommended for applications where static vacuum has to be maintained. However, special models with additional pressure spring which allow for the vacuum to be connected to the pressure inlet side are available on request.

Model	LFS-03
Electrical Function	1 pole NO 1 pole NC
Switch Rating	1 pole NO: 2.5(0.5) A 250V~1E4 1 A250 V~5E4(max 800 mbar) 20 mA 250 V~5E4(max 800 mbar) 1 Pole NC: 2.5(0.5) A 250V~1E4 0.5 A250 V~5E4(max 800 mbar) 20 mA 250 V~5E4
Temperature	Ambient: -10 to +85℃
Electrical Connections	Tab terminals 6.4 x0.8 mm Tab terminals 4.8 x0.8 mm(1 pole NO only)
PressureRange	Pressure: +15 to +2500 mbar Tolerance: +/- 10% NO; +/- 15% NC Vacuum: -600 to -15 mbar Tolerance: +/- 15%
Sample Line Connections	Pressure and vacuum: Inlet 4.0 or5.5 mm(up to 500 mbar) Threaded inlet M10 x1 mmor 1/4 gas
Switch hysteresis	Almost no hysteresis
Max. working pressure	3000 mbar
Medium	Non hazardous gas only
Fixing Methods	Plastics clips (version with inlet only)
Materials	Lower body: PA 66
	Upper body: PA 66
	Adjust. screw: PA 66
	Contact carrying parts: Brass Silver plated (gold plating on request) Membrane: Nitrile, EPDM, (Silicone, Perbunan on request) according to application

Conversion: 1mbar = 100 Pa 1 in/H2O= 249 Pa

3. Product Dimensions(mm) :

4. Production Lines:

5. Patens:

6. Quality Control:

7. Why choose us?

25 patents

45 products were certified with UL,CSA,VDE,CCC and CE

50 engineers teamed for R&D

Coorperation experience with member in fortune global 500

8. LEFOO Exhibitions:

2019. 3  Acrex  India

2019. 1  Ahr  Expo

2018. 6 Aquatech Shanghai

2018. 4 Canton Fair

2018. 4 China Refrigeration show

2018.3 MCE Milano

2018.1 AHR Chicago

9. Packing and shipping:

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