AP-31KP Keyence Two-Color Digital Pressure Sensor

AP-31KP Two-Color Digital Pressure Sensor — Negative Pressure, PNP Output

Key Technical Specifications

• Brand: Keyence
• Model: AP-31KP
• Series: AP-30 series
• Product category: Two-color digital display pressure sensor
• Pressure type: Negative pressure, gauge reference, PNP output
• Rated pressure range: 0 to -29.9 inchHg
• Detectable range: -15 to +110 % of full scale
• Compatible fluids: Air or non-corrosive gases
• Display: 3½-digit, 2-color, 7-segment LED with 11 mm character height
• Display resolution: 0.1 inchHg, 0.1 kPa, 1 mmHg, or 0.001 bar
• Response time: Selectable at 2.5, 5, 100, or 500 ms with chattering prevention
• Temperature characteristic: ±1 % maximum of full scale at 25 °C, valid from 0 to 50 °C

Electrical and Output Performance

• Supply voltage: 12 to 24 VDC ±10%
• Current consumption: 50 mA maximum at 24 V and 90 mA maximum at 12 V
• Output type: PNP open collector with two outputs and N.O./N.C. selection
• Control output rating: 100 mA maximum at 30 V maximum, with 1 V maximum residual voltage
• Analog output: 1 to 5 V with a load impedance of 47 kΩ minimum
• Communication: No built-in ports, protocols, or expansion options
• Interference resistance: Stable switching behavior through selectable response times and chattering prevention

Environmental Durability and Physical Build

• Operating temperature: 0 to +50 °C with no freezing
• Relative humidity: 35 to 85 % RH with no condensation
• Proof pressure: 72.5 PSI
• Vibration resistance: 10 to 55 Hz at 1.5 mm double amplitude for 2 hours in each X, Y, and Z direction
• Protection rating: Not available
• Weight: Approximately 120 g
• Front housing: Polyamide
• Front panel sheet: PET
• Rear housing: Polysulfone
• Pressure port: Die-cast zinc
• Cable: Oil-proof cabtyre cable

Installation Guide

• Mount the sensor on a flat, vibration-controlled surface using the appropriate bracket and fasteners.
• Connect the pressure port to clean vacuum lines carrying air or non-corrosive gases.
• Wire the 12 to 24 VDC supply and confirm polarity before powering the unit.
• Set the PNP output logic to N.O. or N.C. according to your control circuit requirements.
• Select the response time from 2.5, 5, 100, or 500 ms to match your machine cycle.
• Route the oil-proof cabtyre cable away from high-voltage lines to reduce electrical noise.
• Keep ambient temperature within 0 to +50 °C and humidity within 35 to 85 % RH without condensation.

Packing List

• 1 × Keyence AP-31KP pressure sensor
• 1 × Oil-proof cabtyre cable
• 1 × Mounting bracket and fastener set
• 1 × Operation manual
• Protective packaging for safe transport

• Shipping methods: FedEx, UPS, and DHL
• Handling time: We ship in-stock items within 5 days

FAQ

• Q: What is the rated pressure range of the AP-31KP?
  A: The rated range is 0 to -29.9 inchHg for negative gauge pressure.
• Q: Which fluids can I use with this sensor?
  A: Use air or non-corrosive gases only, because the unit is a gauge pressure sensor.
• Q: What output type does the AP-31KP provide?
  A: It provides two PNP open collector outputs with N.O./N.C. selection and a 1 to 5 V analog output.
• Q: What response time options does the AP-31KP offer?
  A: You can select 2.5, 5, 100, or 500 ms with chattering prevention enabled.
• Q: What is the display resolution?
  A: The resolution is 0.1 inchHg, 0.1 kPa, 1 mmHg, or 0.001 bar depending on the selected unit.
• Q: What supply voltage does the AP-31KP require?
  A: It operates on 12 to 24 VDC ±10% with a maximum current of 50 mA at 24 V.
• Q: What is the operating temperature range?
  A: The sensor operates from 0 to +50 °C with no freezing and 35 to 85 % RH without condensation.
• Q: Does the AP-31KP include built-in communication ports?
  A: No, this model has no built-in ports, protocols, or communication expansion options.
• Q: What is the proof pressure of the AP-31KP?
  A: The proof pressure is 72.5 PSI for short-term overpressure protection.
• Q: What is the stock and shipping policy?
  A: We stock new original units, ship within 5 days, and use DHL, FedEx, or UPS.
• Q: What is the return policy?
  A: We support returns within 30 days of delivery.

Contact Information

• Inquiries: sales@nex-auto.com
• Phone / WhatsApp: +86 153 9242 9628
• Partner: NexAuto Technology Limited