PSR/PSE Paddle Switch

Brand: KOBOLD Instruments, Inc.

The KOBOLD flow monitor types PSE and PSR are simple, reasonably-priced and reliable monitors of fluid motions.

Depending on the flow velocity/flow throughput, the baffle plate is deflected and it moves over the balance arm the permanent magnet into the operating range of the reed contact mounted outside the process fluid.

The leaf spring, which also serves as a support for the balance arm, forces the baffle plate back to its rest position when there is no flow.

KOBOLD baffle plate flow monitors are supplied completely assembled with pipe length up to nominal size 40. For bigger nominal pipe sizes the devices are supplied without pipe length for direct fitting and are screwed into standard T pieces or reducing pipes.

PTFE tape is used for sealing.

Specifications

Ambient Temperature Range

  • Maximum

Applications

  • Cooling Circuits
  • Dry Running Protection for Pumps
  • Lubrication Equipment
  • Pipe Fracture Monitoring
  • Prevention of Low Water Levels

Approvals & Certifications

  • ATEX
  • cCSAus
  • CE
  • Ex
  • IEC Ex

BSP Connection

  • G 1" Female
  • G 1/2" Female
  • G 1/4" Female
  • G 1-1/2" Female
  • G 1-1/4" Female
  • G 3/4" Female
  • G 3/8" Female

Cable Length

  • 5 feet (1.5 metres)

Cable Material

  • PVC

Electrical Contacts

  • Bistable Reed Contact
  • Changeover Contact
  • N/C Contact
  • N/O Contact

Electrical Rating

  • Changeover Contact Standard: Maximum
  • Changeover Contact: 150 Vac / 0.3 A, Maximum
  • Changeover Contact: 40 Vac / 0.5 A, Maximum
  • N/O & N/C Contact Standard: Maximum
  • N/O & N/C Contact: 20 Vac / 2 A, Maximum
  • N/O & N/C Contact: 230 Vac / 0.18 A, Maximum
  • N/O N/C Contact & Changeover Contact (ATEX & IECEX): 60 Vac/dc, 2 A, 40 W, 20 VA, Maximum

Enclosure / Body Material

  • 304L Stainless Steel
  • Brass 58

Environmental Protection

  • IP65

Materials of Construction

  • 304L Stainless Steel - Baffle Plate, Sleeve
  • Glass-Fiber-Reinforced - Contact Tube
  • Oxide Ceramic - Magnet
  • Polymide - Contact Tube

Maximum System Pressure

  • psi: 3,626 (kPa: 25,000, bar: 250)

Mounting Position

  • Horizontal

NPT Connection

  • 1" NPT Female
  • 1/2" NPT Female
  • 1/4" NPT Female
  • 1-1/2" NPT Female
  • 1-1/4" NPT Female
  • 3/4" NPT Female
  • 3/8" NPT Female

Pipe Connection

  • 1" Pipe (DN 25)
  • 1/2" Pipe (DN 15)
  • 1/4" Pipe (DN 8)
  • 1-1/2" Pipe (DN 40)
  • 1-1/4" Pipe (DN 32)
  • 2" Pipe (DN 50)
  • 3" Pipe (DN 80)
  • 3/4" Pipe (DN 20)
  • 3/8" Pipe (DN 10)
  • 4" Pipe (DN 100)
  • 6" Pipe (DN 150)
  • 8" Pipe (DN 200)

Process Temperature

  • -10° to 110° C (14° to 230° F) - FPM-Seal
  • -20° to 70° C (-4° to 158° F) - NBR-Seal

Seat / Seal Material

  • FPM
  • NBR

Sleeve Material

  • 304 Stainless Steel
  • Brass 58

Spring Material

  • 301 Stainless Steel - Leaf Spring, Balance Arm

Switch Point Range

  • Water: 2.5-4.8 to 383-533 LPM

Tolerance

  • ± 15 % at 37° C (98.6° F)

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