A High-Accuracy Ceramic Pressure Transmitter
The Cerabar PMC71B is designed for accurate absolute and gauge pressure measurement in industrial processes. Its dry ceramic measuring cell eliminates fill fluid and provides a robust measurement solution for a wide range of pressure applications.
The standard version provides reference accuracy up to 0.05%, while the Platinum version can achieve up to 0.025%, making the PMC71B suitable for applications where measurement accuracy is an important consideration.
Dry Ceramic Measuring Cell
The PMC71B uses a ceramic process membrane and a dry measuring cell with no fill fluid. Endress+Hauser identifies the Ceraphire ceramic measuring system among the main wetted materials.
This construction provides a compact pressure measurement solution while avoiding the use of fill fluid inside the measuring cell.
Designed for Absolute and Gauge Pressure
The PMC71B supports both absolute pressure and gauge pressure measurement. This allows the same product family to address different pressure measurement requirements depending on the selected configuration and application.
Wide Pressure and Temperature Capability
The pressure measuring range extends from 100 mbar to 40 bar, while the specified process temperature range is -40 to +150°C. The device is also fully vacuum resistant down to 0 mbar absolute under the specified conditions.
The maximum overpressure limit is 60 bar, depending on the selected configuration.
Heartbeat Technology for Device Verification
Heartbeat Technology provides verification and monitoring functions designed to identify unwanted device or loop anomalies. Endress+Hauser states that the device health can be verified while the process is running, helping support condition-based maintenance.
This is particularly useful for installations where access to the pressure instrument is difficult or where planned maintenance needs to be based on actual device condition.
SmartBlue App and Bluetooth Operation
Depending on configuration, the PMC71B can be operated wirelessly using Bluetooth® technology and the SmartBlue App. This allows the device to be configured and monitored from a tablet in locations where direct access to the transmitter may be inconvenient.
Guided Commissioning and Verification
The software provides intuitive wizards for setup, proof testing and device verification. These guided functions are designed to simplify commissioning and maintenance tasks while reducing the complexity of device configuration.
Flexible Communication Options
Depending on the selected configuration, the PMC71B is available with 4–20 mA HART, PROFIBUS PA or PROFINET with Ethernet-APL communication. Optional Bluetooth® wireless operation provides an additional local configuration interface.
Flexible Process Connections
The PMC71B can be configured with a range of threaded and flanged process connections. Threaded options include G1/2 to G2, R1/2, MNPT1/2 to MNPT2 and FNPT1/2, while flange options range from DN25 to DN80 and NPS 1" to 4".
Designed for Industrial and Regulated Applications
The PMC71B is available with various approvals and certifications depending on configuration, including ATEX, CSA, IECEx, JPN Ex, INMETRO, NEPSI and UK Ex, as well as SIL and EN 10204-3.1 options. NSF and KTW drinking-water approvals are also listed for applicable configurations.
Key Features
- Product type: Pressure transmitter
- Measuring principle: Absolute and gauge pressure
- Dry ceramic measuring cell
- Ceramic process membrane
- Pressure measuring range 100 mbar to 40 bar
- Standard accuracy up to 0.05%
- Platinum accuracy up to 0.025%
- Process temperature -40 to +150°C
- Fully vacuum resistant to 0 mbar abs. under specified conditions
- Maximum overpressure limit 60 bar
- Up to 100:1 turn-down
- Smallest calibratable span 5 mbar
- Heartbeat Technology for verification and monitoring
- Optional Bluetooth® and SmartBlue App
- 4–20 mA HART, PROFIBUS PA and PROFINET with Ethernet-APL options
- Aluminium or 316L housing options
- Threaded and flanged process connections
- ATEX, IECEx, CSA, NEPSI and other approvals depending on configuration
- SIL and EN 10204-3.1 options
- NSF and KTW drinking-water approvals depending on configuration
Typical Applications
Process Pressure Measurement
The PMC71B can be used for general process pressure measurement in industrial systems where accurate absolute or gauge pressure information is required.
Pressure Measurement in Liquids and Gases
Endress+Hauser's technical documentation identifies the PMC71B for process pressure and level measurement in liquids or gases, making it suitable for a broad range of industrial pressure applications.
Chemical Processing
The ceramic measuring cell and range of gasket and process-connection options allow the PMC71B to be configured for different chemical process requirements.
Water and Wastewater
Applicable configurations with drinking-water approvals make the PMC71B suitable for selected water-related pressure measurement applications.
Process Equipment Monitoring
The combination of pressure measurement, Heartbeat Technology and device diagnostics can support monitoring of process equipment where changes in pressure or device condition need to be identified.
Applications Requiring Remote Device Access
The optional Bluetooth® interface and SmartBlue App are useful where the transmitter is installed in a difficult-to-reach location and local wireless configuration or maintenance is preferred.
Safety-Related Applications
Selected PMC71B configurations are available with SIL approval, providing an option for applications where functional-safety requirements apply. The exact safety capability depends on the selected configuration and applicable documentation.
FAQ
What is the Endress+Hauser Cerabar PMC71B?
The Cerabar PMC71B is a pressure transmitter for absolute and gauge pressure measurement using a dry ceramic measuring cell.
What is the measuring range of the PMC71B?
The pressure measuring range is 100 mbar to 40 bar, depending on the selected measuring cell and configuration.
What accuracy can the PMC71B achieve?
The standard version provides accuracy up to 0.05%, while the Platinum version can achieve up to 0.025%.
Is the PMC71B suitable for vacuum applications?
Yes. Endress+Hauser specifies vacuum resistance down to 0 mbar absolute, with full vacuum resistance up to +150°C process temperature under the specified conditions.
What is the maximum process temperature?
The specified process temperature range is -40 to +150°C. The allowable temperature can depend on the selected configuration and process connection.
Does the PMC71B use a ceramic sensor?
Yes. The PMC71B uses a ceramic process membrane and dry ceramic measuring cell. Endress+Hauser identifies Ceraphire ceramic among the main wetted materials.
What communication protocols are available?
Depending on configuration, the PMC71B supports 4–20 mA HART, PROFIBUS PA and PROFINET with Ethernet-APL. Optional Bluetooth® wireless communication is also available for device operation with the SmartBlue App.
What is Heartbeat Technology used for?
Heartbeat Technology provides device verification and monitoring functions. Endress+Hauser states that it can help verify device health while the process is running and identify unwanted anomalies such as changes in loop characteristics.
Can the PMC71B be operated using a smartphone or tablet?
The PMC71B can be configured with Bluetooth® wireless technology and the SmartBlue App, allowing wireless operation from a compatible mobile device such as a tablet.
What process connections are available?
Threaded options include G1/2 to G2, R1/2, MNPT1/2 to MNPT2 and FNPT1/2. Flanged versions are available from DN25 to DN80 and NPS 1" to 4", depending on configuration.
Is the PMC71B available for hazardous areas?
Yes. Depending on configuration, Endress+Hauser lists approvals including ATEX, CSA, IECEx, JPN Ex, INMETRO, NEPSI and UK Ex. The exact approval must be confirmed against the selected order configuration.
What is the difference between the PMC71B and a differential pressure transmitter?
The PMC71B is designed for absolute and gauge pressure measurement, while a differential pressure transmitter measures the difference between two process pressures. The PMC71B therefore belongs to the pressure-transmitter category rather than the differential-pressure category.
