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PSW-500

OEM Mechanical Pressure Switch with Relay or Alarm

Models In Stock
  • External Pressure Scale and Pointer for Easy Setpoint Adjustments
  • 5 Amp Model Switches With High Proof Pressures
  • 1 Amp Gold-Plated Switches for TTL and Dry Contact Closures
  • Wetted Parts: Stainless Steel, Sealing Compound and or O-ring
PSW-500
From C$ 234.22
Models In Stock
OEM Mechanical Pressure Switch with Relay or Alarm PSW-500 PSW-500
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Product Overview
  • Control Output SPST Relay
  • Cycling < 20 cycles/min
  • Insulation PVC
  • Lead Length 12 in
  • Process Connection Size 1/8 in
  • Process Temperature, Max 105 °C
  • Process Temperature Note -55 to 105°C (-65 to 221°F) [2% setpoint shift can occur below -25°C (-13°F) or above 50°C (122°F)]
  • Switch Type SPST
  • Wire Gauge 20 AWG
  • Wiring/Connector Table Red = N/C, White = N/O, Black = Common
Capable of sensing very low positive or negative pressures, reliability and long life are inherent advantages of this design. Extremely easy set point adjustment: 1) Loosen the lock ring, 2) Turn interface either left or right until pointer is at the desire pressure or vacuum on range label, 3) Retighten the lock ring, and 4) Verify the adjustment by applying pressure or vacuum. See Switch Accessories at omega.com for Audible Alarms and Relay Modules.

Caution: Pressure switches are manufactured to the highest quality specs. However, due to their economical construction, they should be used only for applications where, in the event of product failure, the risk of damage to equipment or personnel is minimal
Rated 5 out of 5 by from Works as advertised I purchased this miniature presser switch to use in my racecar to trigger my Accusump. It works as advertised.
Date published: 2016-12-31
Rated 5 out of 5 by from It worked. Good quality. Easy to install. Fixed the problem. Got here sooner than expected.
Date published: 2021-08-23
Rated 5 out of 5 by from Excellent quality We have been using these for years in a pump to activate a dialer when pressure drops. Very reliable. Some have been installed for many years. Good quality
Date published: 2020-11-12
Rated 5 out of 5 by from rugged and compact vacuum switch I am using this with a vacuum and it switches at a very repeatable setpoint. Seems dependable and easy to adjust with a vacuum gauge to monitor the trigger point.
Date published: 2018-10-26
Rated 5 out of 5 by from Vacuum switch Very simple to use, works great! Easy to order, and great documentation.
Date published: 2018-09-17
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Hello howdo i adjust the range of a PSW-535 to open at 450psi and close at 250 psi. thank you

Asked by: 172M
There is no way to adjust the reset point (deadband) on a PSW-500 Series Pressure Switich. The deadband varies with the main setpoint setting. If your main setpoint up around 500 psi the switch will reset around 68 psi below the main setpoint at about 432 PSI.
Answered by: Applicatrions Engineer JK
Date published: 2020-06-09

What is the size of the threaded connection port

Asked by: GeneB
Thank you for your inquire, the pressure port size 1/8&rdquo;NPT
Answered by: rkent
Date published: 2021-09-28
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