Endress+Hauser Cerabar PMP51B Metal Membrane Pressure Transmitter

Overview of the Endress+Hauser Cerabar PMP51B Pressure Transmitter

The Endress+Hauser Cerabar PMP51B is a digital pressure transmitter with a welded metallic process membrane for absolute and gauge pressure measurement in liquids, gases and steam, and for level measurement through hydrostatic pressure. Endress+Hauser offers it with measuring ranges up to 400 bar, an accuracy of up to ±0.055 % in the Platinum version, and with diaphragm seals for process temperatures up to 400 °C. Output options are 4–20 mA analog, 4–20 mA HART and PROFINET over Ethernet-APL, with optional Bluetooth.

As the official trusted supplier and regional supplier for Endress+Hauser, Seven Star LLC proudly supplies the Endress+Hauser Cerabar PMP51B to customers across the Sultanate of Oman and the wider GCC. Seven Star LLC provides the Technical Information TI01508P with every offer so that plant engineers in Muscat, Sohar and Salalah can check range, membrane and connection before ordering.

Measuring Principle of the Endress+Hauser Cerabar PMP51B

In the Endress+Hauser Cerabar PMP51B the process pressure deflects a metallic membrane that is welded to the sensor body. A fill fluid transfers the pressure to a semiconductor measuring cell with a Wheatstone bridge, and the pressure-dependent change of the bridge output voltage is evaluated by the electronics. Endress+Hauser lists high long-term stability, high overload resistance, suitability for high pressures and secondary containment for enhanced integrity as the benefits of this welded metal design in the standard device.

When the process and the device must be separated, a diaphragm seal system transfers the pressure to the measuring element through an internal membrane and a fill fluid. Compact seals, seals with a temperature isolator and seals with a capillary are available, which helps with extreme temperatures, strong vibration, crystallizing or fibrous media and aggressive liquids. In level applications the transmitter calculates height from h = p / (ρ · g), and a freely programmable characteristic curve converts it into volume or mass in any vessel shape.

Engineering Design of the Endress+Hauser Cerabar PMP51B

The measuring cells cover 400 mbar, 1 bar, 2 bar, 4 bar, 10 bar, 40 bar, 100 bar and 400 bar in absolute and gauge versions, with turn-down of up to 100:1 (80:1 for the 400 mbar cell). The membrane is AISI 316L or Alloy C in the standard device, and gold-coated, tantalum and PTFE-foil membrane options are described for hydrogen, corrosive and sticky media. Threaded connections include G ½, ½ MNPT, JIS and M20 × 1.5 as well as G 1 A, G 1½, G 2, 1½ MNPT and 2 MNPT, and flanged connections to EN/DIN, ASME and JIS are available.

The housing is a single-compartment version of about 1.1 kg or an aluminum dual-compartment version of about 1.4 kg, rated IP66/68 and Type 4X/6P with the cable entry fitted. Analog and HART versions work on 10.5 to 35 V DC (10.5 to 30 V for Ex i), and PROFINET over Ethernet-APL uses power class A with 9.6 to 15 V DC and 540 mW. The ambient temperature range is –40 to +85 °C, with the display fully usable between –20 and +60 °C. A remote sensor version with a separate housing is available when the measuring point is hard to reach.

Key Features of the Endress+Hauser Cerabar PMP51B

The transmitter offers the following documented advantages for process pressure and level duties:

• Pressure ranges from 400 mbar up to 400 bar for absolute and gauge pressure measurement.
• Reference accuracy of ±0.075 % in the standard version and ±0.055 % in the Platinum version.
• Long-term stability of ±0.10 % in one year, ±0.20 % in five years and ±0.25 % in ten years.
• Process temperatures up to 400 °C with high-temperature oil in a diaphragm seal system.
• Output options of 4–20 mA, HART and PROFINET over Ethernet-APL (10BASE-T1L), with optional Bluetooth.
• Wizard-based commissioning with a large display for high readability.
• Development according to IEC 61508 for use in safety functions up to SIL 3 with the 4–20 mA output.
• Heartbeat Technology options with diagnostics, verification and monitoring.

Industrial Applications of the Endress+Hauser Cerabar PMP51B

The Endress+Hauser Cerabar PMP51B serves pressure monitoring on pumps, compressors, steam headers, boiler feed lines and process piping, and level measurement in vessels through hydrostatic pressure. Membrane materials and diaphragm seals extend it to viscous, aggressive or hot media, and hygienic or high-temperature versions cover specialized duties. In Oman, typical uses include pressure control at desalination and district cooling plants, gas and hydrocarbon facilities, power stations and chemical storage in the Sohar and Salalah economic zones.

Seven Star LLC supplies the Cerabar range throughout Oman and the GCC. Engineers can compare the ceramic-sensor Endress+Hauser Cerabar PMC51B with the Cerabar PMP71 0-40 bar and the Cerabar PMP75 pressure transmitter that is built for diaphragm seal applications.

Technical Specifications of the Endress+Hauser Cerabar PMP51B

The table summarizes the main data of the Endress+Hauser Cerabar PMP51B from Endress+Hauser Technical Information TI01508P.

Request a Quote for Endress+Hauser Cerabar PMP51B

To order the Endress+Hauser Cerabar PMP51B, send Seven Star LLC the pressure range, medium, process temperature, connection and output type so that we can prepare a formal RFQ. The Technical Information TI01508P can be downloaded from this page, and our instrumentation division will confirm diaphragm seal options and lead time at quotation. In Oman and the GCC, we supply the Endress+Hauser Cerabar PMP51B with manufacturer documentation and local support.