SCH-PSB Differential Pressure Switch

Brand: KOBOLD Instruments, Inc.

Adjustable differential pressure switch for monitoring overpressure, vacuum and differential pressure of air or other non-combustible, non-aggressive gases.

With this pressure switch the switching pressure can be adjusted without a pressure gauge using a scaled adjustment knob. The switching differential can also be adjusted with a screwdriver.

Switching pressure specifications apply to vertical installation which is also the recommended position with pressure-pipe connections pointing downwards. If the switches are installed horizontally with AMP connection terminals uppermost, the switching values are approximately 20 Pa higher.

Specifications

Adjustment Type

  • Scaled Adjustment Knob

Ambient Temperature Range

  • 20° to 70° C (-4° to 158° F) (Limited from 85° to 70° C Due to PVC-Hose)

Cable Entry

  • M16 × 1.5

Connectors

  • Hose Ports

Cover Material

  • Polystyrene

Diaphragm Material

  • Silicone, Tempered at 200° C (392° F) Getempert

Electrical Connectors

  • AMP Flat Plug 6.3 × 0.8 mm According to DIN 46244
  • Cable Conduit with Cable Strain Relief
  • Push-On Screw Terminal

Electrical Rating

  • 1 A (0.4 A) at 250 Vac

Enclosure / Body Material

  • Polyamide (PA)

Environmental Protection

  • IP54

Maximum System Pressure

  • psi: 1.45 (kPa: 10, bar: 0.1)

Media

  • Air
  • Non-Aggressive Gases

Mounting Position

  • Fastening Lugs

Process Temperature

  • -20° to 70° C (-4° to 158° F)

Set Point - Decreasing

  • Inches WC: 0.08 to 4.015
  • mbar: 0.2 to 10
  • mm Hg: 1.5 to 7.5

Set Point - Increasing

  • Inches WC: 0.08 to 4.015
  • mbar: 0.2 to 10
  • mm Hg: 1.5 to 7.5

Storage Temperature

  • -40° to 70° C (-40° to 158° F) (Limited from 85° to 70° C Due to PVC-Hose)

Switch Type

  • 1 or 2 Normally Closed or Normally Open

System Pressure

  • bar: 0 to 0.1
  • kPa: 0 to 10
  • psi: 0 to 1.45

Temperature Range

  • 70° C (158° F) - Maximum

  • Monitoring air filters and ventilators
  • Monitoring industrial cooling-air circuits
  • Overheating protection for fan heaters
  • Monitoring flows in ventilation ducts
  • Controlling air and fire-protection flaps
  • Frost protection for heat exchangers

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