Type: Main unit, PNP
Applicable sensor head: AP-41, AP-43, AP-44
Rated pressure: -15 to +110 % of F.S.
Display: 3 1/2-digit, 2-color, 7-segment LED (Character height: 11 mm 0.43″), Display cycle: 5 times/sec.
Display resolution: AP-41: 0.1 kPa, 1 mmHg, 0.1 inchHg, 0.001 bar

High-Accuracy Display with Dual Color Output
Equipped with a large 3 1/2-digit, two-color LED display, ensuring easy visibility and quick status recognition during operation.
Fast Response with Chattering Prevention
Selectable response times of 2.5 to 500 ms enable stable detection while minimizing false signals in dynamic environments.
Versatile Output Options
Provides dual PNP open-collector outputs (N.O./N.C. selectable) along with an analog voltage output for flexible system integration.
Durable and Reliable Design
Built with polyamide and polysulfone housing, vibration/shock resistance, and operating stability in temperatures up to 50 °C.

The Keyence AP-40P Amplifier Unit is a PNP main unit designed to deliver precision pressure monitoring when paired with compatible sensor heads such as the AP-41, AP-43, and AP-44. Engineered for high-performance industrial applications, this amplifier offers an advanced interface that allows operators to achieve reliable pressure readings with superior accuracy and visibility.

One of its key highlights is the 3 1/2-digit, dual-color 7-segment LED display with a character height of 11 mm. The display is not only large and clear but also changes color based on status, enabling operators to immediately distinguish between normal and alert conditions. The display updates five times per second, ensuring real-time responsiveness for monitoring dynamic pressure changes.

Performance precision is a strong point of the AP-40P. Depending on the connected sensor head, it can deliver resolutions as fine as 0.1 kPa or 0.001 MPa, providing detailed measurement capability for sensitive applications. The unit maintains ±1.0% F.S. display accuracy and stable analog output with only ±2.0% F.S. fluctuation, ensuring dependable performance in demanding environments.

Flexibility in output is another benefit of the AP-40P. It supports two PNP open-collector outputs, each rated up to 100 mA at 30 V, with selectable normally open (N.O.) or normally closed (N.C.) configurations. This allows the unit to adapt seamlessly to system requirements. In addition, an analog voltage output (1–5 V) enables integration with external monitoring systems, making it highly suitable for automated control setups.

Durability and reliability are central to its design. The AP-40P is constructed with robust polyamide and polysulfone housings, ensuring long service life. It withstands vibration up to 55 Hz and shock forces of 100 m/s², making it suitable for use in harsh industrial conditions. With an operating range of 0 to +50 °C and resistance to humidity up to 85% RH (non-condensing), the unit is adaptable to diverse factory environments.

Compact and lightweight at only 80 g including cable, the AP-40P is easy to install with its included mounting bracket or optional panel mount configuration. This user-friendly installation, combined with its advanced functionality, makes it a preferred solution for precision pressure monitoring.

In summary, the Keyence AP-40P Amplifier Unit combines high visibility, precision measurement, flexible output options, and rugged durability, making it a reliable choice for industrial automation and control applications.