What Is the Cerabar PMC71B?

• The Cerabar PMC71B is a smart digital pressure transmitter from Endress+Hauser.
• It uses a dry, oil-free ceramic measuring cell to measure pressure.
• It’s part of the “Cerabar” family — designed for robust and reliable pressure measurement, especially in challenging process environments.

Key Specifications

Here are some of its main technical characteristics:

Special Features & Advantages

• Vacuum Resistance: The PMC71B is fully vacuum resistant up to +150 °C, making it suitable for vacuum applications.
• High Purity & Durability: The ceramic measuring cell is very resistant to corrosive or abrasive media, offering long-term stability.
• Membrane Breakage Detection: It has built-in diagnostics to detect if the ceramic diaphragm is damaged, improving safety.
• Heartbeat Technology: This enables continuous self-diagnostics and monitoring, so you can detect anomalies like loop characteristic changes while the device is running.
• Remote Configuration: The device can be configured and controlled wirelessly via a secure Bluetooth connection using the SmartBlue app.
• User-Friendly Software: Setup, proof tests, and verification are streamlined via intuitive wizards — simplifies commissioning and maintenance.
• SIL Capability: It supports safety integrity levels (SIL) and guided proof testing, helping reduce systematic failures.

Typical Applications

• Vacuum Systems: Because of its vacuum resistance and ceramic cell, it's ideal for vacuum pressure measurement.
• Aggressive Media: Suitable for corrosive or abrasive fluids/gases due to the ceramic membrane.
• Process Monitoring: In critical processes where you need to continuously monitor the health of the transmitter (via Heartbeat Technology).
• Hygienic / High-Purity: Where contamination or leakage of process fluid must be avoided.

Limitations & Considerations

• Ceramic sensors can be more expensive than metallic ones, so cost may be higher, especially for simple, non-aggressive applications.
• While robust, it needs to be correctly configured (range, output, diagnostics) to get full value from features like self-verification.
• Bluetooth setup is very convenient, but in some highly restricted or classified zones, remote wireless configuration may not be desirable — check your process safety policy.