Applications
PMD75B 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 very 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.
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Maximum working pressure 250 bar (3750 psi) (gauge/absolute) and 40 bar (600 psi) (differential)
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Maximum working static pressure 420 bar (6300 psi)
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Highest measurement accuracy of +/- 0.035%
Benefits
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Heartbeat Technology verifies instrument health without interrupting the process. Increases plant availability.
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Clear instrument status indication: the instrument immediately switches from green to red display as soon as a diagnostic message occurs
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Reduced risk of system failure, error-free SIL commissioning and guided functional safety testing of the instrument
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Wireless remote control of devices in hard-to-reach areas using the SmartBlue App
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Technical documentation
Technical data
Documents/Manuals/Software
Accessories/Spare parts
Orifice plate flowmeter measurement principle video
Pitot tube measurement principle video
Source: Endress+Hauserpublic information from the website
Technical Data
CompareContinuous / Liquids
| Measuring Principle | Differential pressure |
| Characteristic / Application | Differential pressure transmitter which detects process anomalies like plugged impulse lines. Intuitive and clear wizards for commissioning, proof tests and verification. |
| Specialities | Heartbeat Technology, Bluetooth® Operation and maintenance with 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 0.05 % Platinum: up to 0.035 % |
| 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...+110°C (-40°F...+230°F) |
| Process pressure / max. overpressure limit | 420 bar (6300 psi) |
| Pressure measuring range | 10 mbar...250 bar (0.15 psi...3750 psi) |
| Main wetted parts | 316L, AlloyC, Tantal, Monel, Gold |
| Process connection | NPT1/4-18, RC1/4" |
| Max. measurement distance | 400 m (1,312 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 |
| Drinking water approvals | NSF, KTW |
| Options | Touch control display |
| Application limits | None |
Gas
| Measuring Principle | Differential pressure |
| Product headline | Differential pressure transmitter which detects process anomalies like plugged impulse lines, Intuitive and clear wizards for commissioning, proof tests and verification |
| Sensor features | Fill fluid: Silicone oil, Inert oil |
| Transmitter features | LED Module, RFID TAG for easy identification, Plug and play functionalities, HistoROM |
| Wetted materials | 316L, AlloyC, Tantal, Monel, Gold |
| Measured variables | Differential pressure |
| Max. measurement error | Standard: up to 0.05 % Platinum: up to 0.035 % |
| Measuring range | 10 mbar...250 bar (0.15 psi...3750 psi) |
| Max. process pressure | 420 bar (6300 psi) |
| Ambient temperature range | -40°C...+85°C (-40°F...+185°F) |
| Transmitter housing material | Aluminium, 316L |
| Display/Operation | 4-line backlit display with touch control (operation from outside) Bluetooth® Operation and maintenance SmartBlue App, Configuration via local display and operating tools possible |
| Outputs | 4...20 mA HART |
| Digital communication | HART |
| Hazardous area approvals | ATEX, CSA, IECEx, JPN Ex, INMETRO, NEPSI, UK Ex |
| Functional safety | SIL |
| Metrological approvals and certificates | Heartbeat Technology |
| Pressure approvals and certificates | CRN |
| Material certificates | EN10204-3.1, NACE MR0175, NACE MR0103 |
Liquids
| Measuring Principle | Differential pressure |
| Product headline | Differential pressure transmitter which detects process anomalies like plugged impulse lines, Intuitive and clear wizards for commissioning, proof tests and verification |
| Sensor features | Fill fluid: Silicone oil, Inert oil |
| Transmitter features | LED Module, RFID TAG for easy identification, Plug and play functionalities, HistoROM |
| Wetted materials | 316L, AlloyC, Tantal, Monel, Gold |
| Measured variables | Differential pressure |
| Max. measurement error | Standard: up to 0.05 % Platinum: up to 0.035 % |
| Measuring range | 10 mbar...250 bar (0.15 psi...3750 psi) |
| Max. process pressure | 420 bar (6300 psi) |
| Ambient temperature range | -40°C...+85°C (-40°F...+185°F) |
| Transmitter housing material | Aluminium, 316L |
| Display/Operation | 4-line backlit display with touch control (operation from outside) Bluetooth® Operation and maintenance SmartBlue App, Configuration via local display and operating tools possible |
| Outputs | 4...20 mA HART |
| Digital communication | HART |
| Hazardous area approvals | ATEX, CSA, IECEx, JPN Ex, INMETRO, NEPSI, UK Ex |
| Functional safety | SIL |
| Metrological approvals and certificates | Heartbeat Technology |
| Pressure approvals and certificates | CRN |
| Material certificates | EN10204-3.1, NACE MR0175, NACE MR0103 |
Pressure
| Measuring Principle | Differential pressure |
| Characteristic | Differential pressure transmitter which detects process anomalies like plugged impulse lines. 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 0.05 % Platinum: up to 0.035 % |
| Long term stability | 0.025 % of URL/ year 0.05 % of URL/ 5 years 0.10 % of URL/ 10 years |
| Process temperature | -40°C...+110°C (-40°F...+230°F) |
| Ambient temperature | -40°C...+85°C (-40°F...+185°F) |
| Measuring cell | 10 mbar...250 bar (0.15 psi...3750 psi) |
| Smallest calibratable span | 0.25 mbar (0.00375 psi) |
| Vacuum resistance | 25 mbar (0.0375 psi) |
| Max. Turn down | 100:1 |
| Max. overpressure limit | 630 bar (9,450 psi) |
| Process connection | NPT1/4-18 RC1/4" |
| Material process membrane | 316L, AlloyC, Tantal, Monel, Gold |
| Material gasket | PTFE, FKM, EPDM, FFKM |
| Fill fluid | Silicone oil, Inert 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 MR0103, NACE MR0175 |
| Drinking water approvals | NSF, KTW |
| Specialities | Heartbeat Technology, Bluetooth® Operation and maintenance SmartBlue App, LED Module, RFID TAG for easy identification, Plug and play functionalities, HistoROM |
Steam
| Measuring Principle | Differential pressure |
| Product headline | Differential pressure transmitter which detects process anomalies like plugged impulse lines, Intuitive and clear wizards for commissioning, proof tests and verification |
| Sensor features | Fill fluid: Silicone oil, Inert oil |
| Transmitter features | LED Module, RFID TAG for easy identification, Plug and play functionalities, HistoROM |
| Wetted materials | 316L, AlloyC, Tantal, Monel, Gold |
| Measured variables | Differential pressure |
| Max. measurement error | Standard: up to 0.05 % Platinum: up to 0.035 % |
| Measuring range | 10 mbar...250 bar (0.15 psi...3750 psi) |
| Max. process pressure | 420 bar (6300 psi) |
| Ambient temperature range | -40°C...+85°C (-40°F...+185°F) |
| Transmitter housing material | Aluminium, 316L |
| Display/Operation | 4-line backlit display with touch control (operation from outside) Bluetooth® Operation and maintenance SmartBlue App, Configuration via local display and operating tools possible |
| Outputs | 4...20 mA HART |
| Digital communication | HART |
| Hazardous area approvals | ATEX, CSA, IECEx, JPN Ex, INMETRO, NEPSI, UK Ex |
| Functional safety | SIL |
| Metrological approvals and certificates | Heartbeat Technology |
| Pressure approvals and certificates | CRN |
| Material certificates | EN10204-3.1, NACE MR0175, NACE MR0103 |
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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。
