Technical Data
CompareContinuous / Liquids
| Measuring Principle | Differential pressure |
| Characteristic / Application | Smart differential pressure transmitter with one or two capillaries, full range of certifications and Heartbeat Technology. Intuitive and clear wizards for commissioning, proof tests and verification. |
| Specialities | Heartbeat Technology, Bluetooth® Operation and maintenance SmartBlue App, LED Module, RFID TAG for easy identification, Plug and play functionalities HistoROM |
| Supply / Communication | Ex d, Ex e, non-Ex:: 10.5...35V DC Ex i: 10.5...30V DC |
| Accuracy | Standard: up to 0.1 % |
| Long term stability | 0.025 % of URL/ year 0.05 % of URL/ 5 years 0.10 % of URL/ 10 years |
| Ambient temperature | -54°C...+85°C (-65°F...+185°F) |
| Process temperature | -40°C...+400°C (-40°F...+752°F) |
| Process pressure / max. overpressure limit | 160 bar (2.400 psi) |
| Pressure measuring range | 100 mbar...40 bar (1.5psi...600 psi) |
| Main wetted parts | 316L, AlloyC, Tantal, Monel PTFE, Gold |
| Process connection | Thread: MNPT1/2, G1/2 Flange: NPS 2"...4", DN50...100 |
| Max. measurement distance | 160 m (525 ft) H2O |
| Communication | 4...20 mA HART PROFIBUS PA PROFINET with Ethernet-APL Bluetooth® wireless technology and app (optional) |
| Certificates / Approvals | ATEX, CSA, IECEx, JPN Ex, INMETRO, NEPSI, UK Ex |
| Safety approvals | SIL |
| Design approvals | EN 10204-3.1, NACE MR0175, NACE MR0103 |
| Options | Touch control display |
| Application limits | Keine |
Pressure
| Measuring Principle | Differential pressure |
| Characteristic | Specialist with one or two capillaries for accurate differential pressure measurement. Intuitive and clear wizards for commissioning, proof tests and verification. |
| Supply voltage | Ex d, Ex e, non-Ex: 10.5...35V DC Ex i: 10.5...30V DC |
| Reference Accuracy | Standard: up to 0.1 % |
| Long term stability | 0.025 % of URL/ year 0.05 % of URL/ 5 years 0.10 % 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 | 100 mbar...40 bar (1.5 psi...600 psi) |
| Smallest calibratable span | 5 mbar (0.075 psi) |
| Vacuum resistance | 50 mbar (0.73 psi) |
| Max. Turn down | 100:1 |
| Max. overpressure limit | 240 bar (3600 psi) |
| Process connection | Thread: MNPT1/2, G1/2 Flange: NPS 2"...4", DN50...100 |
| Material process membrane | 316L, AlloyC, Tantal, Monel PTFE Gold |
| Material gasket | PTFE, FKM, EPDM, FFKM |
| Fill fluid | Silicone oil, inert oil, vegetable oil, low- / high temperature oil |
| Material housing | Aluminium, 316L |
| Communication | 4...20 mA HART PROFIBUS PA PROFINET with Ethernet-APL Bluetooth® wireless technology and app (optional) |
| Certificates / Approvals | ATEX, CSA, IECEx, JPN Ex, INMETRO, NEPSI, UK Ex |
| Safety approvals | SIL |
| Design approvals | EN10204-3.1, NACE MR0175, NACE MR0103 |
| Specialities | Heartbeat Technology, Bluetooth® Operation and maintenance SmartBlue App, LED Module, RFID TAG for easy identification, Plug and play functionalities, HistoROM |
PMD78B is a member of the new generation of Deltabar transmitters. The transmitter is robust and features a secure Bluetooth connection, allowing remote operation of the instrument via a mobile device with the app installed. It supports on-demand maintenance and increases plant availability.
The software is equally easy to use. The intuitive operating wizard guides the user step by step through instrument setup, functional safety tests and verification tests.
Heartbeat Technology provides self-verification and self-monitoring functions that can detect process anomalies, such as blocked impulse lines.
Benefits
Wireless remote control of devices in hard-to-reach areas using the SmartBlue App
Reduced risk of system failure, error-free SIL commissioning and guided functional safety testing of the instrument
Heartbeat Technology verifies instrument health without interrupting the process. Increases plant availability.
Clear instrument status indication: the instrument immediately switches from green to red display as soon as a diagnostic message occurs
Applications
Maximum working pressure 40 bar (600 psi)
Maximum temperature of 400°C (752 °F) for instruments with diaphragm seal systems
Maximum working static pressure 160 bar (2400 psi)
Highest measurement accuracy of +/- 0.075%
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Source: Endress+Hauserpublic information from the website
Case Studies
市政污水处理污水处理厂 · 差压测量应用案例
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，对差压测量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差压测量，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 · 差压测量应用案例
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，对差压测量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差压测量，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 · 差压测量应用案例
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，对差压测量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差压测量，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 · 差压测量应用案例
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，对差压测量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差压测量，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。
