Product Description

The Keyence AP-31P is a compact digital pressure sensor engineered for precise measurement of negative gauge pressure in industrial environments. Featuring a 3.5-digit, two-color 7-segment LED display with a character height of 11 mm, it offers clear and easy-to-read pressure readings. The sensor supports a rated pressure range of 0 to -101.3 kPa and is suitable for use with air or non-corrosive gases. Its PNP output configuration, combined with analog and control outputs, makes it ideal for integration into automated systems requiring accurate pressure monitoring and control.

Technical Specifications

• Model: AP-31P
• Type: Negative pressure, PNP output
• Rated Pressure Range: 0 to -101.3 kPa
• Fluid Type: Air or non-corrosive gases
• Pressure Type: Gauge pressure
• Display: 3.5-digit, two-color 7-segment LED (character height: 11 mm)
• Display Resolution: 0.1 kPa
• Detectable Pressure Range: -15 to +110% of full scale
• Display Temperature Characteristic: ±1% of full scale at 25°C (0 to 50°C)
• Analog Output: 1 to 5 V (load impedance: 47 kΩ or more)
• Control Output: PNP open collector, 100 mA max (30 V max.), residual voltage: 1 V max., 2 outputs (N.O./N.C. selectable)
• Power Supply Voltage: 12 to 24 VDC ±10%, ripple (P-P) 10% or less
• Current Consumption: 50 mA (at 24 V), 90 mA (at 12 V)
• Environmental Resistance:
• Pressure Resistance: 500 kPa
• Ambient Temperature: 0 to +50°C (no freezing)
• Ambient Humidity: 35 to 85% RH (no condensation)
• Vibration Resistance: 10 to 55 Hz, double amplitude 1.5 mm, 2 hours in each of the X, Y, and Z directions
• Materials:
• Front Housing: Polyamide
• Rear Housing: Polysulfone
• Front Sheet: PET
• Pressure Port: Die-cast zinc
• Cable: Oil-proof cabtyre cable
• Weight: Approximately 120 g (including 2 m cable)​
• Keyence
• +3