- Type: Negative pressure, Zero shift, NPN
- Rated pressure: 0 to -101.3 kPa (0 to -760 mmHg)
- Type of pressure: Gauge pressure, air or non-corrosive gases
- Fluid type: Air or non-corrosive gases
- Display: 3 1/2-digit, 2-color, 7-segment LED (Character height: 11 mm 0.43″)
Free Shipping over $50 For Domestic Shipping
12-Month Warranty
Hassle-Free Returns Within 30 days
Over 5,000 parts in stock
- Brand: Keyence
Keyence AP-31Z Two-Color Digital Display Pressure Sensor, Main, -101.3 kPa, NPN
Mfr # AP-31Z
Condition: New
*Some photos may appear used, but your item will be delivered in new, unused condition.
$110.64
/ea
Availability: In stock|Ships in 3 to 5 business days
- 100% Original
- Ships from USA; Free Shipping on orders over $50
- Hassle-Free 30-Day Returns
- 12-Month Warranty for all products
- Get 10% off—join our email list.
Accepted Payments
- Wide Negative Pressure Measurement Range – Accurately measures from 0 to -101.3 kPa, equivalent to 0 to -760 mmHg, making it ideal for vacuum and low-pressure applications.
- NPN Output Type – Provides reliable NPN transistor output for seamless integration with control systems and automation equipment.
- High-Visibility LED Display – Equipped with a 3½-digit, 2-color, 7-segment LED display with 11 mm (0.43″) characters, allowing for clear and quick readings even from a distance.
- Versatile Fluid Compatibility – Designed for gauge pressure measurements of air or non-corrosive gases, ensuring broad applicability across various industrial environments.
The Keyence negative-pressure measurement unit is engineered to provide precise, reliable readings in a compact and easy-to-read format. It is specifically designed for applications requiring vacuum or low-pressure monitoring, measuring from 0 to -101.3 kPa, which corresponds to 0 to -760 mmHg. This broad range ensures accurate performance for processes such as pneumatic system monitoring, vacuum packaging, or laboratory experiments, where precise pressure control is crucial.
Equipped with an NPN output, this unit integrates smoothly into industrial automation setups. The transistor output provides fast response times and reliable signal transmission, making it suitable for use with controllers, PLCs, or other electronic monitoring systems. This allows for automated monitoring and control of processes dependent on vacuum levels, improving overall operational efficiency.
A standout feature of this unit is its high-visibility 3½-digit LED display. With large 11 mm characters in a two-color 7-segment format, readings are instantly clear, reducing the likelihood of misinterpretation. This design is particularly beneficial in busy industrial environments where operators need to quickly confirm pressure levels without distraction or error.
The device is optimized for measuring gauge pressure in air or non-corrosive gases, making it versatile across many industrial and laboratory applications. Its compatibility with non-corrosive gases ensures long-term reliability and minimizes maintenance requirements. The compact, intuitive design allows for straightforward installation and user-friendly operation, enhancing productivity while maintaining accuracy and safety.
Overall, this negative-pressure measurement unit combines precision, versatility, and ease of use. Its wide measurement range, clear display, reliable output, and fluid compatibility make it an ideal solution for applications where accurate vacuum monitoring is critical. Whether used in manufacturing, research, or laboratory environments, it delivers dependable performance to help maintain optimal system control.
| Manufacturer | Keyence |
|---|
FAQ
What is your warranty policy?
All new products purchased from Enicstra LLC are backed by a 12-month warranty. We will repair any covered issue at no cost. If a repair is not possible, we will provide a full refund. For warranty support, please email customerservice@enicstra.com.
What happens if an item has a lead time longer than two weeks?
If an item requires a lead time of more than two weeks, we will notify you immediately. Your order will only be confirmed once you acknowledge and approve the lead time.
What is your returns policy?

If you are dissatisfied with the part(s) you received for any reason (subject to our Terms and Conditions), you may take advantage of our 30-day return-to-base policy, which allows you to request an exchange or a full refund.
Do you offer global delivery?

Yes, we offer reliable worldwide shipping. Our efficient logistics network allows us to process and ship orders to customers across the globe with ease and precision.
Please note: All international orders may be subject to customs duties, taxes, and import fees, which are the responsibility of the recipient. Enicstra does not collect or cover these charges.
How will the orders be shipped?

Enicstra partners with trusted carriers including USPS, UPS, FedEx, and DHL to ensure safe and timely delivery of every order.
We offer free domestic shipping on orders over $50. For international orders, additional shipping costs will apply based on the destination and selected carrier service.
Who can I contact if something goes wrong?

If you have any questions or encounter any issues with your order, please reach out to our Customer Support Team at customerservice@enicstra.com. We’re here to help and will respond as promptly as possible.
How can I cancel my order?

If you wish to cancel your order, please contact us at customerservice@enicstra.com as soon as possible. All cancellation requests are subject to approval by Enicstra LLC and must comply with our Terms and Conditions.
Do you offer discounts for bulk orders?
Yes, we offer special pricing for bulk purchases. If you’re interested in ordering in large quantities, please contact us at sales@enicstra.com to discuss volume discounts and customized quotes.
What payment options and currencies do you accept?
We aim to make your purchase seamless by offering multiple payment options, including bank transfers, PayPal, and major credit and debit cards such as Visa, MasterCard, and American Express. We accept payments in most major global currencies, although we prefer US Dollars (USD) transactions. Payments in other currencies may incur additional charges.

How long is my quote valid?

Our quotes are valid for 30 days from the date they are issued unless otherwise specified at the time of quotation.

Do you offer trade credit agreements?

Yes, we understand the importance of trade credit in business operations and provide credit agreements upon request, subject to eligibility. For more information, please contact our team.

Do you accept sales tax exemption certificates?
Yes. If your organization is tax‑exempt (e.g., reseller, nonprofit, government, educational), please email a copy of your valid exemption certificate to customerservice@enicstra.com.
Our team will review and apply the exemption to your account/orders. To avoid being charged tax, please send the certificate before placing your order (or we can refund the tax after verification if the order has already been placed).

Reviews
There are no reviews yet.