Type: Negative pressure, Zero shift, NPN
Rated pressure: 0 to -101.3 kPa
Fluid type: Air or non-corrosive gases
Type of pressure: Gauge pressure, air or non-corrosive gases
Display: 3 1/2-digit, 2-color, 7-segment LED (Character height: 11 mm 0.43″), Display cycle: 5 times/s

Negative-Pressure Measurement: Accurately measures vacuum levels from 0 to -101.3 kPa, ideal for monitoring low-pressure systems.
NPN Output Type: Provides reliable signal output compatible with a wide range of industrial automation devices.
High-Visibility LED Display: Features a 3 1/2-digit, 2-color, 7-segment LED display with 11 mm (0.43″) character height and a 5-times-per-second refresh rate for clear, easy-to-read readings.
Versatile Fluid Compatibility: Supports air and non-corrosive gases, allowing for safe and precise operation in multiple industrial applications.

The Keyence AP-31ZA is a highly precise negative-pressure main unit designed for robust industrial and laboratory applications. Built to measure vacuum levels from 0 to -101.3 kPa, this unit provides reliable monitoring of low-pressure systems, making it suitable for processes where accurate vacuum detection is critical, such as pneumatic systems, cleanroom environments, or laboratory instrumentation.

A key feature of the AP-31ZA is its NPN output, which ensures seamless integration with a variety of automation controllers, PLCs, and other industrial devices. This output type provides stable and consistent signals, facilitating reliable process control and data acquisition. Its compatibility with standard industrial equipment enhances overall system efficiency and reduces the risk of miscommunication between devices.

The unit’s display is designed for maximum clarity and usability. A 3 1/2-digit, 2-color, 7-segment LED display presents measurements with a character height of 11 mm (0.43″), providing clear visibility even from a distance. With a display update cycle of five times per second, users can monitor rapid pressure changes in real time, making it particularly useful in dynamic or fast-paced processes. The dual-color display allows for easy distinction between operational states, warnings, or threshold exceedances, improving situational awareness on the production floor.

Additionally, the AP-31ZA is compatible with air and non-corrosive gases, ensuring safe operation across diverse industrial environments. This flexibility allows the unit to be employed in various applications, including vacuum control, leak detection, and pressure monitoring in pneumatic or laboratory systems. Its durable construction and precise calibration make it a reliable choice for critical monitoring tasks.

Compact yet highly functional, the Keyence AP-31ZA negative-pressure main unit combines accurate measurement, clear display, and versatile integration capabilities. It is an essential instrument for industries seeking reliable, precise, and visually intuitive pressure monitoring solutions.