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
Technical data
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Source:Endress+Hauserwebsite public information
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 |
Related Models
| Model | Name |
|---|---|
| PMP55-AA21JA1FGCCXJA1A+AK | 压力变送器 |
| PMP55-AA21JA1KGCGVJA1A+AK | 压力变送器 |
| PMP55-BA21JA1WGJU5JA1A | 压力变送器 |
| PMP55-BA21JA2MGCCNJD1A+AK | 压力变送器 |
Case Studies
市政污水处理污水处理厂 · 表压和绝压应用案例
项目背景
市政污水处理客户在污水处理厂环节，长期面临「出水水质监测精度不足、仪表易受污染导致数据漂移，影响达标排放」的困扰，对表压和绝压的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的表压和绝压，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应市政污水处理复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
食品饮料食品生产线 · 表压和绝压应用案例
项目背景
食品饮料客户在食品生产线环节，长期面临「卫生级测量要求高，在线仪表需耐 CIP/SIP 清洗且精度稳定」的困扰，对表压和绝压的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的表压和绝压，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应食品饮料复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
化工制药反应釜与储罐 · 表压和绝压应用案例
项目背景
化工制药客户在反应釜与储罐环节，长期面临「介质腐蚀性强、工况复杂，仪表需耐腐蚀且防爆」的困扰，对表压和绝压的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的表压和绝压，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应化工制药复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
电力能源电厂锅炉与汽机 · 表压和绝压应用案例
项目背景
电力能源客户在电厂锅炉与汽机环节，长期面临「高温高压工况下测量不稳定，维护停机成本高」的困扰，对表压和绝压的稳定性与测量精度提出了更高要求。
解决方案
阿仪科技技术团队结合现场工况，为客户选配了适配的表压和绝压，并完成选型、安装、调试与整定的一站式交付。
实施效果
- 测量精度与响应速度显著提升，数据稳定可靠；
- 仪表适应电力能源复杂工况，维护量大幅降低；
- 助力客户实现连续在线监测与降本增效，获得客户高度认可。
