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
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Technical documentation
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Source:Endress+Hauserwebsite public information
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Gauge and Absolute Pressure Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Gauge and Absolute Pressure.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Gauge and Absolute Pressure for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Gauge and Absolute Pressure Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Gauge and Absolute Pressure.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Gauge and Absolute Pressure for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Gauge and Absolute Pressure Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Gauge and Absolute Pressure.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Gauge and Absolute Pressure for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Gauge and Absolute Pressure Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Gauge and Absolute Pressure.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Gauge and Absolute Pressure for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
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