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These sensitive single pole
switches can be used as
pressure or vacuum
switches, or as differential
pressure switches.
Specifications Approvals: UL recognized, CSA certified Teraturempe: -30 to 65°C(-23 to 149°F) Setpoint Accuracy: ±10% of setting at 70°F Note: Pressure settings may change over the temperature range. Materials of Construction Body: Acetal Diaphragm: EPDM bonded to steel ring Contacts: Gold plated silver Springs: Plated Phospher Bronze Terminals: Plated Copper or Brass Pressure Connection: Spout for 1.8 ID tubing Adjusting Screw: Stainless Steel or Zinc Plated Steel. Setting
as shipped, 2 inches of H2O negligible deadband Media: Clean dry non-corrosive gases only. Note: The pressure media entering
through Port A is in direct contact
with the electrical contacts in the
switch. The media entering through
Port B is separated from the
electrical contacts by the diaphragm. Weight: 9 g (0.3 oz)
Pressure Switching Normally Open Contacts
Connect the pressure source to Inlet
Port B and set the adjusting screw
to the desired pressure setpoint.
Turning the screw clockwise
narrows the gap between contacts
and decreases the setpoint.
Turning the screw counterclockwise
increased the gap, increasing
the setpoint. Note that the media
entering through Port B is
separated from the electrical
contacts by the diaphragm. Pressure Switching Normally Closed Contacts
Connect the pressure source to Port
A and monitor continuity across the terminals. Slowly turn the adjusting
screw clockwise, narrowing the gap
between the contacts until the
contacts are closed. Apply the
setpoint pressure which will open
the contacts. Continue to turn the
adjusting screw clockwise until the
contacts make and break at the
desired setpoint. Vacuum Switching:
Repeat above
using Port A for Normally Open
contacts and Port B for Normally
Closed Contacts.
† Tous les Montants indiqués Dans EUR I> Notez: Custom switches and pre-fixed setpoint at customer specified value available, 50 piece minimum order. Consult Pressure Engineering.
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