Sensitive Differential Switches
Sensitive differential switches are the perfect for those needing a sensitive, low pressure switch at an affordable price. These switches sense very low pressures, such as less than an inch of water, (Range = 0.25 inches of water to 35 inches of water). For a frame of reference, a trumpet player blows 55 inches of water (or 2 Psi) on average, so these switches are very sensitive.
Our sensitive differential switch can be setup to sense either pressure, vacuum, or the difference between two sources of pressure or vacuum.
Wide variety of options available to meet original equipment manufacturers product requirements.
Highly stable with good repeat accuracy. All switches are 100% tested at high & low settings, & at proof pressure.
SAFE & ECONOMICAL
Remote operation with complete electrical isolation. UL Recognized. Costs less than conventional controls.
MADE IN U.S.A.
Presair switches are designed & manufactured in Eau Claire, Wisconsin, U.S.A.
Presair’s sensitive single pole switches can be adapted to pressure or vacuum switches, or as differential pressure switches. These switches are field adjustable or can be factory set from 0.25 inches of water to 35 inches of water.
The switches can respond to rapid pulsing & their gold-plated silver contacts will handle low level switching currents
These “slow make, slow break” switches can respond to rapid pulsing & the gold plated silver contacts will handle low level switching currents. Optional adjustable air bleeds can be supplied on either side of the diaphragm for pulse-sensing application safe edges or bellows.
- 0.25 – 15 inches of water Adjustable Range. Factory set options available.
- Rating: 750 ma @ 250 VAC to 5 ma @ 3 VDC; 1 AMP @ 250 VAC to 5 ma @ 3 VDC.
- UL / cUL Recognized for 100,000 operations.
Part Number Configurations
Here is a complete list of part number configurations already listed in our catalog. Click on a part number below for more information.
Other custom part number options are available. Please contact us with your requirements for more information.
We are certain of our position at the top so we’re comparing our product with other top products in the marketplace today.
Find further details by visiting this link.
0.25 to 35 inches of water
Max. Operating Pressure = 8 PSI
750 mA @ 250VAC
UL / cUL Recognized
Made in U.S.A.
Frequently Asked Questions
YOUR QUESTIONS, ANSWERED.
Request A Quote
Complete the form below with your application information, and a product specialist with follow up with you in 1-2 business days.