Technical Data
CompareContinuous / Liquids
| Measuring Principle | Absolute and gauge pressure |
| Characteristic / Application | Smart and reliable pressure transmitter, with piezoresistive measuring cell and metal welded process isolating diaphragm and diaphragm seal. |
| Supply / Communication | 4 ..20 mA HART: 11,5...45 V DC Ex ia: 11,5...30 V DC PROFIBUS PA FOUNDATION Fieldbus |
| Accuracy | Standard 0.15% Platinum 0.075% |
| Long term stability | < 0,1% von 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 | -70°C…400°C (-94°F…752°F) |
| Process pressure / max. overpressure limit | 600 bar (9000 psi) |
| Pressure measuring range | 1 bar...400 bar (15 psi...6000 psi) |
| Main wetted parts | 316L AlloyC Montel Tantal Rhodium |
| Process connection | Diaphragm seal Flanges (DIN, ASME, JIS) Tri-Clamp ISO2852 Hygienic connections |
| Max. measurement distance | 4000m (13.123ft) H2O |
| Communication | 4...20 mA HART PROFIBUS PA FOUNDATION Fieldbus IO-Link |
| Certificates / Approvals | ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI |
| Safety approvals | SIL |
| Design approvals | EN 10204-3.1 NACE MR0175, MR0103 AD2000 |
| Hygienic approvals | 3A, EHEDG CoC ASME-BPE |
| Marine approval | GL/ ABS/ LR/ BV/ DNV |
| Options | local display |
| Successor | PMP51B |
| Application limits | Measuring cell: Metal welded If pressurized, possibly use differential pressure meas-urement with two pressure transmitters (electronic dp). Observe ratio head pressure : hydrostatic pressure |
Pressure
| Measuring Principle | Absolute and gauge pressure |
| Characteristic | Smart and reliable pressure transmitter, with piezoresistive measuring cell and metal welded process isolating diaphragm and diaphragm seal. |
| Supply voltage | 4...20 mA HART 11,5...45V DC (Non Ex): Ex ia: 11,5...30V DC PROFIBUS PA: 9...32 V DC (Non Ex) FOUNDATION Fieldbus: 9...32 V DC (Non Ex) |
| Reference Accuracy | Standard 0.15% Platinum 0.075% |
| Long term stability | 0.1% of URL/ year 0.2% of URL/ 5 years 0.25% of URL/ 10 years |
| Process temperature | -70°C…+400°C (-94°F…+752°F) |
| Ambient temperature | -40°C...+85°C (-40°F...+185°F) |
| Measuring cell | 400 mbar...400 bar (5.8 psi...6000 psi) relative/ absolute |
| Smallest calibratable span | 20 mbar (0.3 psi) |
| Vacuum resistance | 50 mbar (0.73 psi) |
| Max. Turn down | 20:1 |
| Max. overpressure limit | 600 bar (9000 psi) |
| Process connection | Thread: G1/2...G2, MNPT1/2...MNPT2 Flange: DN25...DN100, ASME 1"...4", JIS 10k Diaphragm seal |
| Process connection hygienic | Tri-Clamp DIN11851 DIN11864-1 NEUMO Varivent SMS DRD Universal adapter |
| Material process membrane | 316L, AlloyC, Tantal, PTFE, Rhodium>Gold |
| Material gasket | None, diaphragm welded |
| Fill fluid | Silicone oil, Inert oil, Vegetable oil, High temperature oil, Low temperature oil, |
| Material housing | Die-cast aluminum, AISI 316L |
| Communication | 4...20 mA 4...20 mA HART PROFIBUS PA FOUNDATION Fieldbus IO-Link |
| Certificates / Approvals | ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, UK Ex |
| Safety approvals | SIL |
| Design approvals | EN10204-3.1 NACE MR0103 |
| Hygienic approvals | CoC ASME-BPE 3A, EHEDG |
| Marine approvals | GL/ ABS/ LR/ BV/ DNV |
| Specialities | TempC Membrane |
| Successor | PMP51B |
The Cerabar PMP55 digital pressure transmitter uses a metal diaphragm seal and is mainly used in the process industry and the hygiene sector to measure the pressure, level, volume and mass of liquids. The PMP55 is designed for high-pressure and extremely high-temperature measurement applications, with a maximum working temperature of up to 400 °C (-94 to 750°F). The measuring range is adjustable and the quick setup function saves cost and time. It complies with IEC 61508 and IEC 61511 and meets SIL2 functional safety requirements.
Advantages
A large number and variety of diaphragm seal materials and process connections
Excellent repeatability and long-term stability
IEC 61508 version 2.0 and IEC 61511 certified by TÜV NORD, suitable for process pressure monitoring in SIL2 functional safety systems
Simple and safe menu-guided operation: via the on-site display module, or remotely via 4 to 20 mA HART, PROFIBUS PA, FOUNDATION Fieldbus
Modular design for measuring differential pressure, static pressure and pressure (Deltabar M - Deltapilot M - Cerabar M), e.g. replaceable display module and main electronics module
Seamless, independent system integration (HART/PA/FF)
New TempC diaphragm minimizes temperature influence with short recovery time
Areas of application
Single-compartment aluminum or stainless steel (316L) housing
Process connection: thread, flange or hygienic connection
Temperature range: -70 to +400°C (-94 to +752°F)
Pressure range: +400mbar to +400bar (+15 to +6,000psi)
Accuracy: ±0.15%, "platinum version" ±0.075%
International explosion protection approval, SIL, hygienic approval, marine approval
Spare Parts & Accessories 53
53 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 52002449 | cable glandconsists of: cable gland M20 gasket NBR plug Pg13.5 Cerabar M | Details |
| 71092709 | cable glandConsists of: cable gland M20, synthetic. O-ring 17.0x2.0 EPDM + PTFE/FDA. Usage: housing F30/31, FMB50/FMB51/FMB52/FMB53, PMC51, PMD55, PMP51/PMP55. | Details |
| 71092711 | cable glandConsists of: cable gland M20, metal. O-ring 17.0x2.0 EPDM + PTFE/FDA. Usage: housing F15/F31, FMB50/FMB51/FMB52/FMB53, PMC51, PMP51/PMP55, housing F30 PMD55. | Details |
| 71092712 | cable entryConsists of: gasket 18.72x2.51 NBR 70. Adapter M20 > G1/2. Not for Ex d. Usage: FMB50/FMB51/FMB52/FMB53, PMC51, PMD55, PMP51/PMP55. | Details |
| 52005984 | plug connectorwith gasket for Aluminium and stainless steel housing | Details |
| 52020763 | plug connectorCerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70 | Details |
| 71570154 | M12 connectorConsists of: M12 plug, seal ring. Usage: PMC51, PMP51, PMP55, FMB50. | Details |
| 52020762 | plug connectorHarting plug set Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70 | Details |
| 71120017 | plug valve connectorConsists of: plug, seal, screw. Usage: FMB50/FMB51/FMB52/FMB53, PMC51, PMD55, PMP51/PMP55. | Details |
| 52027000 | Stainless Steel CoverGasket 67,5x2,9x1,5 VMQ/PTFE Stainless steel housing F15 | Details |
| 52027002 | Window cover with gasketSight glass: glass Gasket 67,5x2,9x1,5 VMQ/PTFE Stainless steel housing F15 | Details |
| 52028207 | Window cover with gasketSight glass: Polycarbonat PC Gasket 67,5x2,9x1,5 VMQ/PTFE for use in non-hazardous area (EEx ia) Stainless steel housing F15 | Details |
| 52028267 | Stainless steel cover with windowSight glass: Glass Claw for cover Gasket 67,5x2,9x1,5 VMQ/PTFE for dust Ex version Stainless steel housing F15 Cerabar M | Details |
| 52028268 | Stainless Steel CoverClaw for cover Gasket 67,5x2,9x1,5 VMQ/PTFE Stainless steel housing F15 Cerabar M | Details |
| 52028179 | gasketProfile gasket for cover Stainless steel housing F15 | Details |
| 71092705 | Aluminum coverMaterial: aluminium. O-ring: EPDM. Not for Ex d/XP. Usage: FMB50/FMB51/FMB52/FMB53, FTC260/FTC262, PMC51, PMD55, PMP51/PMP55. | Details |
| 71092706 | Aluminum coverMaterial: aluminium. O-ring: EPDM. Individual tested, Ex d/XP. Usage: PMC51, PMD55, PMP51/PMP55. | Details |
| 71092707 | Aluminum coverMaterial: aluminium. Sight glass: mineral glass. O-ring: EPDM. Not for Ex d/XP. Usage: FMB50/FMB51/FMB52/FMB53, FTC260/FTC262, PMC51, PMD55, PMP51/PMP55. | Details |
| 71092708 | Aluminum coverMaterial: aluminium. Sight glass: mineral glass. O-ring: EPDM. Individual tested, Ex d/XP. Usage: PMC51, PMD55, PMP51/PMP55. | Details |
| 52020429 | Seal ring assemblyconsists of: 5x O-ring 75,87x2.62, EPDM, PTFE, FDA | Details |
Configurator / Comparison
Source:Endress+Hauserwebsite public information
Measuring principle video
Click to playManuals & Documents 12
All documents for this model12 documents · click to expand
Cerabar M PMC51, PMP51/55 Analog Chinese
Cerabar M, Deltabar M, Deltapilot M HART (V 01.00.zz) Chinese
操作手册 Cerabar M PMC51, PMP51, PMP55 Deltabar M PMD55 Deltapilot M FMB50/51/52/53 Chinese
Cerabar M / Deltabar M / Deltapilot M, Operating Instructions FOUNDATION Fieldbus Chinese
Cerabar M /Deltabar M /Deltapilot M Operating Instructions PROFIBUS PA Chinese
Cerabar M, Deltapilot M Chinese
Cerabar M PMC51, PMP51/55 Analog English
Cerabar M, Deltabar M, Deltapilot M HART (V 01.00.zz) English
Cerabar M / Deltabar M / Deltapilot M, Operating Instructions FOUNDATION Fieldbus English
Cerabar M /Deltabar M /Deltapilot M Operating Instructions PROFIBUS PA English
Cerabar M, Deltapilot M English
TI Cerabar M PMC51PMP51 PMP55 Chinese
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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