MCT-ASCX Series: The Modern Replacement for Sensym ASCX and All Sensors ADCA Pressure Sensors

AVSensors MCT-ASCX Series Replacement for Sensym ASCX and AllSensors ADCA

For more than three decades, the Sensym ASCX family has been one of the most widely adopted pressure sensor platforms in medical, industrial, avionics, and instrumentation applications. Even today, many legacy designs continue to rely on ASCX-based sensors and the similar All Sensors ADCA Series package format.

As product availability, lead times, and lifecycle concerns continue to challenge OEMs, engineers are increasingly searching for a reliable replacement that preserves mechanical compatibility while delivering improved performance and long-term supply stability.

The AV Sensors MCT-ASCX Series was developed specifically to address these needs. Designed as a drop-in replacement for Sensym ASCX and compatible with many All Sensors ADCA implementations, the MCT-ASCX combines proven package compatibility with a modern mixed-signal architecture and enhanced performance.

A True Drop-In Replacement for Existing Designs

One of the most significant advantages of the MCT-ASCX Series is its ability to simplify redesign efforts.

The sensor maintains the familiar mechanical footprint, pinout, and pressure port arrangement that engineers have relied upon for years. Existing PCB layouts, tubing arrangements, and mounting schemes can often be retained with minimal or no modification, reducing qualification costs and accelerating production transitions.

For manufacturers facing obsolescence concerns or supply-chain uncertainty, this compatibility can dramatically reduce engineering risk while preserving the performance characteristics expected by existing systems.

Key compatibility benefits include:

• Pin-compatible design for Sensym ASCX platforms

• Compatible vertical dual-port configuration

• Similar mounting geometry

• Analog ratiometric voltage outputs

• Multiple pressure ranges and pressure reference options

More Than a Replacement: A Better Design for New Applications

While replacement capability is important, focusing solely on drop-in compatibility overlooks one of the MCT-ASCX Series' greatest strengths.

For many new designs, the package itself remains highly attractive because of its practical mechanical architecture.

Dual Vertical Pressure Ports

The MCT-ASCX utilizes two vertically oriented pressure ports, providing a straightforward interface for tubing connections. Unlike side-port designs that can complicate hose routing and enclosure layouts, the vertical arrangement allows tubing to be routed cleanly above the PCB.

This configuration is especially valuable in:

• Medical devices

• Airflow instrumentation

• HVAC controls

• Environmental monitoring equipment

• Portable diagnostic systems

The result is a cleaner mechanical design and reduced tubing stress during assembly and operation.

Easy Installation Using Christmas Tree Clamps

Many engineers continue to favor ASCX-style packages because of their compatibility with inexpensive and highly effective Christmas tree retention clips.

The molded mounting ears allow the sensor to be securely attached to a chassis, bracket, or enclosure without complex fixtures or custom mounting hardware. Assembly technicians can quickly install the sensor while maintaining reliable positioning and tubing alignment.

Benefits include:

• Faster assembly operations

• Reduced hardware count

• Lower manufacturing costs

• Improved vibration resistance

• Simplified field servicing

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Straight Ports Simplify Tubing Management

The MCT-ASCX features straight pressure ports that naturally align with common tubing paths. This reduces the need for tight bends immediately at the sensor interface, minimizing the risk of:

• Kinked tubing

• Flow restrictions

• Mechanical stress on the pressure ports

• Long-term reliability concerns

For differential pressure applications, straight ports often result in cleaner pneumatic routing and more predictable system layouts.

Protecting Existing Designs While Enabling Future Ones

Many replacement products focus exclusively on maintaining compatibility. The MCT-ASCX Series takes a broader approach.

For legacy systems, it offers a practical migration path from Sensym ASCX and many All Sensors ADCA devices. For new developments, it retains the mechanical advantages that made the ASCX package successful in the first place—dual vertical ports, simple mounting, straightforward tubing connections, and proven field reliability.

For engineers seeking a dependable replacement for ASCX-based products—or simply a well-designed differential pressure sensor package for a new project—the AV Sensors MCT-ASCX Series delivers the familiarity of a proven mechanical platform combined with the performance of a modern sensing architecture.

Landing Page

https://www.avsensors.com/board-mount/mct-ascx-series

John Valentini, Business Development AV Sensors (business.development@avsensors.com)