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Differential Pressure Switch

Ⅰ . Overview Type YCK-P5 (originally type SG-A) pressure difference switch applies to the dual line concentrated lubricating system with PN of 40MPa which is used to control reversal valve or monitor the lubricating system. It applies the pressure difference of two pipelines to send electric...

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image002.jpg . Overview
 Type YCK-P5  (originally type SG-A) pressure difference switch applies to the dual line  concentrated lubricating system with PN of 40MPa which is used to control  reversal valve or monitor the lubricating system. It applies the pressure  difference of two pipelines to send electric signal. When pressure difference  achieves 5MPa, signal will be sent to control reversal valve to reverse or  monitor the lubricating system. It is generally installed on the end of two  main pipelines of terminal type dual line concentrated lubricating system.
 

. Technical parameters

Model

Nominal    pressure (MPa)

Indicating    differential pressure (MPa)

Indicating    flow (ml)

Max.    voltage (V)

Max.    electric current (A)

Weight    (kg)

PCK-P5

40

5

0.7

500

15

3

Use  grease with minimum cone penetration 220(25℃,150g) 1/10mm (NLGI0#~3#) or lubricating  oil with minimum viscosity grade N68. Working environment temperature is -20~80℃.
 

. Dimensions


 

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. Descriptions of model

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. Working principle
image008.pngThe  valve body of pressure difference switch and travel switch are assembled on a  bottom plate. Lubricating grease enters the right chamber of valve body piston  of pressure difference switch through main pipeline B for the acting force of  pressure while main pipeline A unloads. When pressure difference of the two  main pipelines achieves 5MPa, piston moves leftward after overcoming the spring  force in the left chamber and push travel switch, making contact 1 and 2 close,  sending pulse signal to electric control cabinet of system Terminal 1-2 contact valve to reverse. Then main pipeline A is pressurized and main pipeline B  unloads. Piston is centered for the spring force in the two chambers. The  contact 1 and 2 of travel switch are off and the Terminal 3-4 contact center place. The system starts the second cycle of working. Once the pressure  difference of the two main pipelines achieves 5MPa again, piston moves  rightward, contact 3 and 4 close. Pulse signal is sent again to force the  reversal valve to reverse and the next cycle starts again.

  

.  Use instruction

  1. Pressure difference switch should be installed  in the place where it is well-ventilated and dry and convenient for observation  as well as where there is no moving mechanism around to interfere.

  2. Pressure difference switch should be installed  on the end of main pipelines of terminal type dual line concentrated  lubricating system and a dual line distributor should be also mounted behind of  it so that the sensitivity will not be influenced by the aging, deterioration  and withering of lubricating grease.

  3. After travel switch is connected, adjust the  contact bridge to the center place and tighten screws.

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