Pressure-switch PS 1

The PS 1 is an adjustable pressure switch for high and low pressure applications.

 

Applications:
  • Protection functions (for examplePump-Down)
  • Control functions
  • Defrost control
  • Refrigeration
  • Heat pump systems
  • etc.
characteristics:
  • 1 change-over contacts
  • Narrow adjustable differential depending on model
  • Range and differential pointer in units bar and psig
Pressure connector:
  • A= 7/16"-20 UNF male
  • C= G1/4" male, stainless steel with steel bellows
  • K= 1m cap tube and schrader valve opener, 7/16"-20 UNF flare nut
  • L= 1/4"-ODM solder with 1m cap tube
  • R= G 1/4" male
  • U= 6mm ODF solder, 80mm length
  • X= 1/4"- ODF solder, 80mm length
  • F= 1/4"-18 NPTF, steel (incl.bellows)
Pressure range:
  • 1 = -0,75 ... 3 bar
  • 2 = -0,8 ... 1,5 bar
  • 3 = -0,5 ... 7 bar
  • 4 = 1 ... 20 bar
  • 5 = 6 ... 31 bar

image: PS1-A4R

 

Low Pressure Controls PS1
Type Upper switch pt.adjustable from … to(at bar) Difference adjustable from … to(at bar) Lower switch pt.adjustable from … to(at bar) Standard setting
(at  bar)		 Leakage Test (at  bar) Pressure connector
PS1-A3A -0,5 ... 7 0,5 ... 5 -0,9 3,5 / 4,5 25 7/16"-20 UNF
PS1-A3K capillary/nut
PS1-A3L cap/solder
PS1-A3U solder 6mm
PS1-A3X solder tube 1/4"
PS1-R3A -0,5 ... 7 external reset approx. 1bar above setpoint -0,9 3,5 25 7/16"-20 UNF
PS1-R3K capillary/nut
PS1-R3L cap/solder
PS1-R3U solder 6mm
PS1-R3X solder tube 1/4"
 
Type Upper switch pt.adjustable from … to(at bar) Difference adjustable from … to(at bar) Lower switch pt.adjustable from … to(at bar) Standard setting
(at  bar)		 Leakage Test (at  bar) Pressure connector
High Pressure Controls PS1
PS1-A5A 6 ... 31 2 ... 15 3 16 / 20 36 7/16"-20 UNF
PS1-A5K capillary/nut
PS1-A5L cap/solder
PS1-A5U solder 6mm
PS1-A5X solder tube 1/4"
PS1-R5A 6 ... 31 external reset approx. 3bar below setpoin - 20 36 7/16"-20 UNF
PS1-R5K capillary/nut
PS1-R5L cap/solder
PS1-R5U solder 6mm
PS1-R5X solder tube 1/4"
 
Type Upper switch pt.adjustable from … to(at bar) Difference adjustable from … to(at bar) Lower switch pt.adjustable from … to(at bar) Standard setting
(at  bar)		 Leakage Test (at  bar) Pressure connector
Pressure Limiter for low pressure protection (automatic reset)
PS1-W3A -0,5 ... 7 0,5 ... 5 -0,9 3,5 / 4,5 25 7/16"-20 UNF
PS1-W3K capillary/nut
PS1-W3L cap/solder
PS1-W3U solder 6mm
PS1-W3X solder tube 1/4"
 
Type Upper switch pt.adjustable from … to(at bar) Difference adjustable from … to(at bar) Lower switch pt.adjustable from … to(at bar) Standard setting
(at  bar)		 Leakage Test (at  bar) Pressure connector
Pressure Cut Out for low pressure protection (external reset)
PS1-B3A -0,5 ... 7 external reset approx. 1bar above setpoin -0,9 3,5 25 7/16"-20 UNF
PS1-B3K capillary/nut
PS1-B3L cap/solder
PS1-B3U solder 6mm
PS1-B3X solder tube 1/4"
 
Type Upper switch pt.adjustable from … to(at bar) Difference adjustable from … to(at bar) Lower switch pt.adjustable from … to(at bar) Standard setting
(at  bar)		 Leakage Test (at  bar) Pressure connector
Pressure Limiter for high pressure protection (automatic reset)
PS1-W5A 6 ... 31 2 ... 15 3 16 / 20 36 7/16"-20 UNF
PS1-W5K capillary/nut
PS1-W5L cap/solder
PS1-W5U solder 6mm
PS1-W5X solder tube 1/4"
 
Type Upper switch pt.adjustable from … to(at bar) Difference adjustable from … to(at bar) Lower switch pt.adjustable from … to(at bar) Standard setting
(at  bar)		 Leakage Test (at  bar) Pressure connector
Pressure Cut Out for high pressure protection (external reset)
PS1-B5A 6 ... 31 external reset approx. 3bar below setpoin - 20 36 7/16"-20 UNF
PS1-B5K capillary/nut
PS1-B5L cap/solder
PS1-B5U solder 6mm
PS1-B5X solder tube 1/4"
 
Safety Pressure Cut Out for high pressure protection (internal manual reset)
PS1-S5A 6 ... 31 internal reset approx. 3bar below setpoin - 21 36 7/16"-20 UNF
PS1-S5K capillary/nut
PS1-S5L cap/solder
PS1-S5U solder 6mm
PS1-S5X solder tube 1/4"