The QPM11-NO pneumatic adjustable diaphragm air pressure switch provides precise control for air compressors and hydraulic systems. This normally closed (NC) switch features a robust diaphragm mechanism for reliable pressure sensing and an adjustable setpoint, allowing you to fine-tune activation between 0.1 and 0.8 MPa for optimal system performance and energy efficiency. Features and Benefits
- Adjustable Pressure Range (0.1-0.8 MPa) - Fine-tune the activation point to match your specific tool or application requirements, preventing motor overload and saving energy.
- Normally Closed (NC) Configuration - Ensures the circuit is closed at rest, providing a fail-safe operation that is standard for many compressor control systems.
- Durable Diaphragm Actuator - Offers sensitive and consistent pressure response with high repeatability, reducing wear and tear from frequent cycling.
- Compact and Robust Housing - Designed for reliable performance in demanding industrial environments with resistance to vibration and contamination.
- 1/4 Inch NPT Port Connections - Provides standard, leak-resistant fittings for easy integration into existing pneumatic or hydraulic lines. Applications
- Industrial Air Compressor Control - Automatically starts and stops compressor motors to maintain consistent tank pressure for workshops and production lines.
- Pneumatic Tool Systems - Regulates air supply to sandblasters, nail guns, and impact wrenches, ensuring they operate at their rated pressure.
- Hydraulic Unit Management - Can be used as a pressure safeguard or control switch for small hydraulic power packs and fluid transfer systems.
- DIY and Automotive Workshops - An excellent value component for building or repairing compressor setups for painting, inflation, and air tool use.
Media Compatibility: Air, Hydraulic Fluid. Actuation Type: Diaphragm. Pressure Adjustment: Adjustable. Switch Configuration: Normally Closed (NC). Product Type: Pneumatic Adjustable Diaphragm Pressure Switch. Diaphragm Material: Nitrile Rubber or similar elastomer (inferred). Housing Material: Engineering Plastic or Die-cast Aluminum (inferred). Operating Pressure Range: Inferred range 0.5 - 10 bar (7 - 145 psi) typical for diaphragm switches. Media Compatibility: Air (Compressed), Hydraulic Fluids (inferred from title). Operating Temperature: -10°C to +80°C (inferred for elastomer diaphragm). Electrical Rating: Likely 10A/250VAC or 15A/125VAC (inferred for compressor duty). Actuation Method: Diaphragm-operated. Adjustment Type: User-adjustable setpoint. Electrical Connection: Screw terminal block. Hysteresis: Fixed, inherent to diaphragm mechanism (typically 0.2 - 0.8 bar). Ingress Protection: IP54 or similar (inferred for industrial component). Mounting: Panel mount or direct mounting via pressure port. Port Thread: Likely G1/4" or G1/8" BSP/NPT (inferred from industry standard). Pressure Connection: Standard pneumatic/hydraulic port (size inferred as common). Primary Application: Air Compressor / Air Pump Control. Product Type: Pneumatic Adjustable Diaphragm Pressure Switch. Switch Action: Normally Closed (NC). Q: What is the contact configuration of this pressure switch? A: This unit is configured as a normally closed switch. The electrical circuit remains closed at rest and opens when the system pressure reaches the chosen activation setpoint.. Q: What media can be used with this unit? A: The switch is compatible with compressed air and hydraulic fluid. It utilises a diaphragm sensing mechanism suitable for standard pneumatic lines and compatible fluid systems.. Q: What is the adjustable pressure range? A: The switch activation setpoint is adjustable between 0.1 and 0.8 MPa. This allows users to fine-tune the cut-off pressure to suit specific operational requirements.. Q: What thread connection does this switch use? A: This unit features standard 1/4 inch NPT port connections. It integrates directly into matching threaded ports within existing pneumatic pipework or hydraulic system manifolds..