General Description:
The PS61P delivers better pressure capability over the PS61 in the same compact 24 mm (15/16") size. It is designed for medium to high pressure
hydraulic applications. The modular design allows the user to customize the pressure interface with a wide variety of US, British and ISO stud ends.
In addition, numerous elastomers are available to ensure compatibility with the end user's fluid and expected operating temperature range. The
PS61P is available with seven different electrical termination options including integral connectors, flying leads, cable and connector harnesses. All
of this flexibility in a compact package, plus the availability of adjustable models, makes the PS61P the ideal product solution for demanding hydraulic
applications.
Principle of Operation:
The PS61P is designed to be used with non-aqueous low viscosity liquids. The liquid under pressure enters a small port in the mounting fitting. This
pressure applies a force to a radially sealed rod that is guided by a proprietary plastic bearing. The rod movement is transmitted to a tightly controlled
travel control mechanism that moves the electrical contacts. For normally open versions (A circuit), the contacts close on increasing pressure which
complete a low resistance path between either the terminal blades (-SP or -TS), two wires (-FLA, -FLF, -FLSA, -FLSF or -CAB) or two connector pins
(-SS, -WM,-WF, -DE or -DT). When the pressure decreases, the contacts will reopen creating an open circuit between the electrical interfaces
described above. The normally closed (B circuit) exhibit a low resistance path between the electrical terminations at 0 psi and conversely create an
open circuit upon the exposure to increasing pressure. The point at which the pressure switch operates can be either factory set or adjustable. Only
the -SP, TS, -FLA and -FLSA versions are adjustable. See the adjustment section for the procedure. The other versions are adjusted to the
customer's desired setpoint at the factory and cannot be changed by the user.
Specifications:
Wetted Materials
Pressures
Temperatures
Electrical
Ingress Protection
Approvals
Housing Material
Housing O-ring Material
Piston Rod Material
Piston Rod Seal
Piston Rod Backup
Bearing
Proof
Burst
Fluid
Ambient
Storage
Rating
Contact resistance
-SP and -TS
-SS, -DT, -FLA,-FLF, -FLSA,
-FLSF and -CAB
PS61P Series
Instruction bulletin
RoHS compliant zinc plated steel
NBR (std); EPDM or Viton® optional
Hardened alloy steel
NBR (std); EPDM or Viton® optional
Proprietary filled PTFE
Proprietary plastic resistant to almost all chemicals
7000 psi (483 BAR)
22000 psi (1517 BAR)
-10° to 250° F (-40° to 121° C) depending on set point, fluid viscosity and
elastomer chosen
-40° to 225° F (-40° to 107° C) depending on set point, fluid viscosity and
elastomer chosen (-CAB limited to 75°C)
-65° to 275° F (-54° to 135° C) (-CAB limited to 100°C)
100 VA for silver contacts. Gold contacts recommended for logic level loads
(<12 VDC and< 20 mA). AC loads can be switched but must be within 100
VA. Avoid inductive loads to prevent contact erosion which will alter the set
points.
4-15 milliohms typical
IP00
IP67 per IEC 60529 (pending)
IPX9K per DIN 40050-9 (pending)
IP6KX per DIN 40050-9 (pending)
CE, RoHS
Bulletin No. 239804
Rev. B
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