Overview
The World Magnetics PSF100A is a miniature DesignFlex pressure switch designed for precise monitoring of pressure, vacuum, and differential pressure across industrial, medical, and HVAC applications. Built with a dual diaphragm and dual contact design, this switch provides exceptional reliability in environments subject to shock and vibration.
Key Features
- Adjustable Set Points: 0.1″ to 50.0″ H₂O range to match diverse system requirements
- Patented Shock and Vibration Resistance: Will not actuate at 50G shock or 10G continuous vibration (50–2000 Hz)
- Dual Diaphragm/Dual Contact Design: Gold contact points provide reliable switching and extended mechanical life
- Compact Miniature Size: Low weight and space-efficient design for integration into confined applications
- Long Service Life: Exceeds 20 million mechanical cycles
- Military-Grade Construction: Rugged MIL-SPEC design for demanding industrial environments
Technical Specifications
- Switch Type: SPST normally open (single-pole, single-throw)
- Contact Configuration: Double-make/double-break gold contacts
- Electrical Rating: Up to 40 mA resistive at 30 VDC; 120 VAC for neon lamp load
- Operating Voltage: AC/DC up to 30 V (resistive load)
- Proof Pressure: 8 psi (set point ≤3.0″ H₂O); 15 psi (set point >3.0″ H₂O)
- Operating Temperature: +40°F to +150°F (standard); extended ranges available
- Case Material: Polycarbonate (other materials available)
- Diaphragm Material: Standard polyurethane; Teflon® optional
- Porting Options: Two 0.200″ diameter barbed ports for 1/8″ to 3/16″ ID tubing
- Electrical Connections: 0.187″ × 0.020″ tab-type terminals compatible with quick disconnects
- Mounting: Eyeleted for #2 screws; mounting clip available
- Mechanical Life: 20+ million cycles
- Tolerance: Standard ±20% (tighter tolerances available)
Typical Applications
The PSF100A pressure switch is suited for:
- Medical device pressure monitoring
- HVAC system control and diagnostics
- Industrial pneumatic controls and valve automation
- Environmental monitoring systems
- Aerospace pressure and vacuum sensing
- Vacuum and differential pressure detection in automation
Compatibility & Replacements
Compatible With
- Pneumatic control systems (0.1–50.0″ H₂O range)
- HVAC heating and cooling systems
- Industrial automation platforms requiring low-pressure sensing
- Medical and laboratory gas pressure monitoring
- DC/AC electrical systems up to 30 VDC or 120 VAC
Replaces / Drop-In Replacement For
- PSF100A pressure switches with equivalent set points
- Other World Magnetics miniature pressure switches in the DesignFlex series
- Legacy or obsolete ultra-sensitive pressure switches rated for similar pressure ranges
Works With
- Standard 1/8″ to 3/16″ ID pneumatic tubing (barbed port interface)
- Quick-disconnect electrical connectors (AMP 2-520182-2 equivalent)
- Panel/chassis mounting systems and pneumatic valve assemblies
- AC and DC control circuits (resistive loads up to 40 mA)
