Product Description

The Keyence AP-C31P is an ultra-compact digital pressure sensor designed for precise measurement of negative pressure in industrial applications. It features a 3.5-digit, two-color 7-segment LED display with a character height of 11 mm, providing clear and easy-to-read pressure readings. The sensor offers a rated pressure range of 0 to -101.3 kPa and is suitable for use with air or non-corrosive gases. With its PNP output configuration, the AP-C31P is ideal for integration into automated systems requiring accurate pressure monitoring and control.​

Technical Specifications

• Model: AP-C31P
• Type: Negative pressure, PNP output
• Rated Pressure Range: 0 to -101.3 kPa
• Detectable Pressure Range: -15 to +110% of full scale
• 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: Standard mode: 0.1 kPa; Focus mode: 0.01 kPa
• Display Update Rate: 10 times per second
• Operating Indicators: Red LED × 2 (corresponding to control output 1 and 2)
• Hysteresis: Adjustable, standard setting: 0.5% of full scale
• Response Time (Chattering Prevention Function): Selectable 2.5, 5, 100, or 500 ms
• Analog Output: 1 to 5 V with load impedance of 1 kΩ or less (zero-shift input selectable)
• Zero-Shift Input: Input time: 2 ms or more (analog output selectable)
• Control Output: PNP open collector, 100 mA max (at 30 V or below), residual voltage: 1 V max, 2 outputs (NO/NC selectable)
• Pressure Port: Rc (PT) 1/8, 180° rotation
• Power Supply Voltage: 12 to 24 VDC ±10%, ripple (P-P) 10% or less
• Power Consumption:
• Normal Mode: 12 V: 720 mW (60 mA) or less; 24 V: 960 mW (40 mA) or less
• Eco Mode: 12 V: 480 mW (40 mA) or less; 24 V: 720 mW (30 mA) or less
• 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: Polysulfone
• Rear Housing: PBT
• Front Sheet: Polycarbonate
• Pressure Port: Zinc die-cast
• Weight: Approximately 30 g (without cable); approximately 85 g (with 2 m cable)
• Included Accessories: Power supply cord (2 m, connector type)​