Technical Data
CompareContinuous / Liquids
| Measuring Principle | Absolute and gauge pressure |
| Characteristic / Application | Pressure transmitter with metal membrane for accurate measurement in liquids or gases. Available with diaphragm seals. Intuitive and clear wizard for commissioning |
| Specialities | Bluetooth® Operation and maintenance SmartBlue App, RFID TAG for easy identification, Plug and play functionalities |
| Supply / Communication | Ex d, Ex e, non-Ex: 10.5...35V DC Ex i: 10.5...30V DC |
| Accuracy | Standard: up to 0.075 % Platinum up to 0.055 % |
| Long term stability | 0.1 % of URL/ year 0.2 % of URL/ 5 years 0.25 % of URL/ 10 years |
| Ambient temperature | -40°C...+85°C (-40°F...+185°F) |
| Process temperature | Standard: -40°C…+125°C (-40°F…+257°F) Diaphragm seal: -40°C...+400°C (-40°F...+752°F) |
| Process pressure / max. overpressure limit | 700 bar (10,500 psi) |
| Pressure measuring range | 400 mbar... 400 bar (6psi...6,000psi) |
| Main wetted parts | 316L, AlloyC, Tantal, Monel, PTFE |
| Process connection | Thread: G1/2...G2, R1/2, MNPT3/4...MNPT2, FNPT1/2 Flange: DN25...DN80, NPS 1"...3" |
| Max. measurement distance | 4000 m (13,123 ft) H2O |
| Communication | 4...20 mA, 4...20 mA HART PROFINET with Ethernet-APL Bluetooth® wireless technology and app (optional) |
| Certificates / Approvals | ATEX, IEC Ex, CSA C/US, NEPSI |
| Safety approvals | SIL |
| Design approvals | EN 10204-3.1 NACE MR0175, NACE MR0103, AD2000 |
| Drinking water approvals | NSF |
| Options | Diaphragm seal |
| Application limits | Measuring cell: Metal welded If pressurized, possibly use differential pressure measurement with two pressure transmitters (electronic dp). Observe ratio head pressure: hydrostatic pressure |
Pressure
| Measuring Principle | Absolute and gauge pressure |
| Characteristic | Pressure transmitter with metal membrane for accurate measurement in liquids or gases. Available with diaphragm seals. Intuitive and clear wizard for commissioning |
| Supply voltage | Ex d, Ex e, non-Ex: 10.5...35V DC Ex i: 10.5...30V DC |
| Reference Accuracy | Standard: up to 0.075 % Platinum: up to 0.055 % |
| Long term stability | 0.1% of URL/year 0.2% of URL/ 5 years 0.25% of URL/ 10 years |
| Process temperature | Standard: -40°C…+125°C (-40°F…+257°F) Diaphragm seal: -70°C...+400°C (-x°F...+752°F) |
| Ambient temperature | -40°C...+85°C (-40°F...+185°F) |
| Measuring cell | 400 mbar...400 bar (6psi...6,000psi) |
| Smallest calibratable span | 20 mbar (0.3 psi) |
| Vacuum resistance | Standard:10 mbar (0.145 psi) Diaphragm seal: 50 mbar (0.725 psi) |
| Max. Turn down | 100:1 |
| Max. overpressure limit | 600 bar (9,000 psi) |
| Process connection | Thread: G1/2...G2, R1/2, MNPT3/4...MNPT2, FNPT1/2 Flange: DN25...DN80, NPS 1"...3" |
| Material process membrane | 316L, AlloyC, Tantal, Monel, PTFE |
| Material gasket | PTFE |
| Fill fluid | Silicone oil, Inert oil, Vegetable oil, High/ low temperature oil |
| Material housing | Aluminium |
| Communication | 4...20 mA, 4...20 mA HART PROFINET with Ethernet-APL Bluetooth® wireless technology and app (optional) |
| Certificates / Approvals | ATEX, IEC Ex, CSA C/US, NEPSI |
| Safety approvals | SIL |
| Design approvals | EN10204-3.1, NACE MR0175, NACE MR0103 |
| Drinking water approvals | NSF |
| Specialities | Bluetooth® Operation and maintenance SmartBlue App, RFID TAG for easy identification, Plug and play functionalities |
The PMP51B is a member of the new generation of Cerabar transmitters. The instrument offers many advantages, such as convenient on-site or remote operation and condition-based maintenance, more effectively preventing unplanned downtime.
The software is also very simple to use. The intuitive operating wizard guides the user step by step through instrument setup, functional safety tests and verification tests, minimizing the risk of operating errors. Using a mobile device and a secure Bluetooth connection, the transmitter can be controlled remotely via an app.
Advantages
Reduced risk of system failure, error-free SIL commissioning and guided instrument functional safety tests
Fewer on-site accidents and protection of devices installed at hard-to-reach measuring points
Use the SmartBlue App to wirelessly and remotely control devices in the production area without interrupting the production process
Application areas
Maximum applicable pressure: 400 bar (6000 psi)
Maximum temperature of instruments with diaphragm seal systems: 400°C (752 °F)
Maximum measuring accuracy: +/- 0.055%
Spare Parts & Accessories 49
49 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71487198 | Blind plug, M20, 316L, O-ring EPDMConsists of: blind plug, O-ring PTFE coated 17.0x2.0. Usage: FHX50B, FTL51B, FTL62, FTL63, FTL64, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, NMT81, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71487199 | Plug: M20, aluminum, EPDM sealing ringConsists of: blind plug, O-ring PTFE coated 17.0x2.0. Usage: FHX50B, FTL51B, FTL62, FTL63, FTL64, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, NMT81, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71679714 | Blind plug M20, Alu, Ex dConsists of: Plug IEC/ATEX Ex d marking, o-ring PTFE coated 17,0x2,0. Usage: FMG50, FMP51, FMP52, FMP54, FMP55, FMP56, FMP57, FMR51, FMR52, FMR53, FMR54, FMR57, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL64, OFMP50, OFMP51, OFMP57, OFMR51, OFMR54, OFTL41, OFTL51B, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71487201 | Blind plug, NPT1/2, aluminumConsists of: blind plug, PTFE coated. Usage: FHX50B, FTL51B, FTL62, FTL63, FTL64, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, NMT81, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71487203 | Blind plug, NPT1/2, 316LConsists of: blind plug, PTFE coated. Usage: FHX50B, FTL51B, FTL62, FTL63, FTL64, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, NMT81, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71679718 | Blind plug NPT1/2, Alu, Ex dConsists of: Plug IEC/ATEX Ex d marking, PTFE coated. Usage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL64, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71435135 | Cable gland M20, plastic, suitable for models: FTL41, FTL51B, PMC51B, PConsists of: Cable gland, O-ring 17.0 x 2.0 PTFE coated. Usage: FHX50B, FMB70, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL63, FTL64, PMC51B, PMC71B, PMD50, PMD55B, PMD63B, PMD75B, PMD78B, PMP50, PMP51B, PMP63B, PMP71B. | Details |
| 71701449 | Cable gland, blue, M20, plasticConsists of: Cable gland blue M20x1.5, PA, O-ring 17.0 x 2.0 PTFE coated. Usage: FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL51B, FTL62, FTL64, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71435136 | Cable gland M20, nickel-plated brass, suitable for: FMG50, FTL41, FTL51B, PConsists of: Cable gland, O-ring 17.0 x 2.0 PTFE coated. Usage: FHX50B, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL63, FTL64, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71435137 | Cable gland M20, 316L, suitable for models: FMG50, FTL51B, PMC51BConsists of: Cable gland, O-ring 17.0 x 2.0 PTFE coated. Usage: FHX50B, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL51B, FTL62, FTL63, FTL64, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71440660 | M20x1.5-G1/2 adapter, aluminumConsists of: Adapter set, O-ring, 17.0 x 2.0 PTFE coated. Usage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL63, FTL64, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71435138 | Plug connector M20, nickel-plated brass, suitable for: screw-in thread, FMG50Usage: M12 screw-in thread, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL51B, FTL62, FTL64, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71435139 | M12 plug, 316L, APL, housing sideUsage: M12 screw-in thread. Usage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL51B, FTL62, FTL63, FTL64, FTM50, FTM51, FTM52, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 52006263 | Process connection | Socket for plug 4p-125V, 4A-M12M12 插头 自连接 M12转成格兰 | Details |
| 71439098 | Connector HAN7D, 90°, IP65, suitable for: FMG50, PMC51BUsage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71474251 | Enclosure grounding terminal L+PConsists of: spring washer, screw, earth handle, clamp. Usage Liquiphant: Only for digital communication. Usage: FHX50B, FMG50, PMD50, PMD55B, PMD63B, PMD75B, PMD78B, PMC51B, PMC71B, PMP50, PMP51B, PMP63B, PMP71B, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL51B, FTL62, FTL63, FTL64. | Details |
| 71549578 | Atmospheric compensation filter port, EPDMConsists of: vent screw 304, Pressure Compensation filter, O-ring EPDM, Protection lid. Usage: FHX50B, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL51B, PMC51B, PMC71B, PMP51B, PMP71B, Aluminium housing. | Details |
| 71435116 | Housing cover, aluminum, sealed cover, O-ring, HNBR. Suitable for models: FMG50, FTL41, FTLSealing ring, HNBR. Usage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL63, FTL64, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71435118 | Housing cover, aluminum, closed cover, Ex d seal, HNBR. Suitable for: FMG50, FTL4Sealing ring, HNBR. Usage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL63, FTL64, NMT81, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71439086 | Cover red Alu, closed, Ex dSealing ring: HNBR. Usage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, PMC51B, PMC71B,PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
Configurator / Comparison
Accessories / Spare parts
Source:Endress+Hauserpublic information from the website
Measuring principle video
Click to play10 documents · click to expand
BA Cerabar PMP51B Chinese
BA Cerabar PMP51B Chinese
BA Cerabar PMP51B Chinese
BA Cerabar PMP51B English
BA Cerabar PMP51B English
BA Cerabar PMP51B English
TI 焊接接头、过程转接头和法兰 Chinese
TI Cerabar PMP51B Chinese
TI Weld-in adapter, process adapter and flanges English
TI Cerabar PMP51B English
Product Videos
Case Studies
Municipal Wastewater Treatment · Gauge and Absolute Pressure — Application Case
Site Conditions
This is a Municipal Wastewater Treatment customer whose plant is at the inlet, biological and outlet stages of a municipal plant. The main task was measuring gauge or absolute pressure to judge process state.
The Problem
The difficulty lies in high solids and corrosive fractions, with large diurnal flow swings; at the same time effluent parameters drift and probes foul with sludge and biofilm. Specification therefore means selected by turndown, overpressure protection and diaphragm material.
What We Did
We took a pressure range approach — pressure solution matched to process pressure and temperature. Delivery was built around selected by turndown, overpressure protection and diaphragm material, with point-by-point checks on: stable compliance with Grade 1A discharge limits and online data reporting.
Operating Outcome
In service the system performs as intended — spotting abnormal pressure early, before equipment is damaged, with routine maintenance falling noticeably.
Food & Beverage · Gauge and Absolute Pressure — Application Case
Application Context
dosing, pasteurising, filling and CIP stages is a typical Food & Beverage duty. The project started from Gauge and Absolute Pressure, focusing on measuring gauge or absolute pressure to judge process state.
Process Constraints
frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles, and syrups, dairy and beverages that scale easily, under strict hygienic requirements only amplify it. The Gauge and Absolute Pressure specification must therefore cover selected by turndown, overpressure protection and diaphragm material.
Delivery Approach
Delivery was handled as the pressure range — pressure solution matched to process pressure and temperature. Execution centred on selected by turndown, overpressure protection and diaphragm material, together with food-safety and hygienic design per 3-A / EHEDG.
Field Results
Operation shows the benefit clearly — spotting abnormal pressure early, before equipment is damaged, with confidence in this measuring point improving markedly.
Chemical & Pharmaceutical · Gauge and Absolute Pressure — Application Case
Customer Profile
The typical setting in Chemical & Pharmaceutical is reactors, metering vessels and finished-product tanks. The measuring point is Gauge and Absolute Pressure; the focus is measuring gauge or absolute pressure to judge process state.
Key Difficulties
Conditions are highly corrosive media with solvents and crystallisation, partly in explosive atmospheres and, on top of that, corrosion plus Ex protection shortens instrument life and makes downtime costly, which a standard configuration cannot handle for long. The design therefore starts with selected by turndown, overpressure protection and diaphragm material.
Implementation
The scope ran through the pressure range: pressure solution matched to process pressure and temperature. Technically it hinges on selected by turndown, overpressure protection and diaphragm material, and on these requirements: Ex certification and GMP traceability of records.
Customer Benefit
In practice this means spotting abnormal pressure early, before equipment is damaged, which cut the workload on the site maintenance team.
Power & Energy · Gauge and Absolute Pressure — Application Case
Project Background
The project covers boiler feedwater, turbine condensate and FGD/DeNOx systems. The work centres on Gauge and Absolute Pressure and the core task is measuring gauge or absolute pressure to judge process state.
Operating Challenges
The medium and duty are characterised by high temperature and pressure with both steam and saline water, and drift under high temperature and pressure, with very costly unplanned outages. So Gauge and Absolute Pressure cannot be specified generically — it calls for selected by turndown, overpressure protection and diaphragm material.
Solution
The Ainstru engineering team worked through the pressure range: pressure solution matched to process pressure and temperature. The configuration involves selected by turndown, overpressure protection and diaphragm material, with these requirements in view: compliance with power-industry codes and unit availability targets.
Results
Since start-up the system has run steadily; the practical result is spotting abnormal pressure early, before equipment is damaged.
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