描述
“Looking for a reliable differential pressure transmitter for industrial flow measurement? The Endress+Hauser Deltabar PMD78B is engineered for high-precision pressure monitoring in even the most demanding process environments. By utilizing advanced TempC membrane technology, this sensor minimizes thermal drift, ensuring the accuracy required for critical filter supervision and boiler drum level monitoring.”
Built for modern process automation, the PMD78B combines advanced digital diagnostics, Bluetooth® wireless commissioning, and Heartbeat Technology to simplify maintenance while improving plant availability. Whether used for flow measurement, level monitoring, filter supervision, or pressure control, it provides dependable long-term performance in oil & gas, chemical, power generation, water treatment, food processing, and other critical industries.
Its robust construction, multiple wetted material options, SIL capability, and support for HART, PROFIBUS PA, and PROFINET make it suitable for both new installations and retrofit projects.
Key Features
Key Features
- High accuracy up to ±0.075%
- Differential pressure ranges from 100 mbar to 40 bar
- TempC membrane technology reduces temperature influence
- Bluetooth® wireless commissioning via SmartBlue App
- Heartbeat Technology for online diagnostics and verification
- SIL certified for safety instrumented systems
- Static pressure up to 160 bar
- Process temperatures up to 400°C with diaphragm seal
- Supports HART, PROFIBUS PA, and PROFINET with Ethernet-APL
- Multiple diaphragm materials including 316L, Alloy C, Monel, Tantalum, PTFE, and Gold
Applications
Typical Applications
The Deltabar PMD78B is widely used for:
- Differential flow measurement
- Closed tank level measurement
- Filter monitoring
- Heat exchanger monitoring
- Pump performance monitoring
- Density measurement
- Boiler drum level
- Chemical reactor pressure monitoring
- Oil & Gas processing
- Water & wastewater treatment
- Power generation
- Food & beverage production
- Pharmaceutical processing
Technical Specifications
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | Endress+Hauser Deltabar PMD78B |
| Measuring Principle | Differential Pressure |
| Measuring Range | 100 mbar to 40 bar |
| Accuracy | Up to ±0.075% |
| Standard Accuracy | ±0.1% |
| Turn Down Ratio | 100:1 |
| Static Pressure | Up to 160 bar |
| Overpressure Limit | 240 bar |
| Process Temperature | -70°C to +400°C |
| Ambient Temperature | -40°C to +85°C |
| Process Connection | G1/2, MNPT1/2, DN50-DN100, NPS2″-4″ |
| Wetted Materials | 316L, Alloy C, Monel, Tantalum, PTFE, Gold |
| Housing Material | Aluminum, 316L Stainless Steel |
| Output Signal | 4-20mA HART |
| Communication | HART, PROFIBUS PA, PROFINET, Bluetooth |
| Power Supply | 10.5-35V DC |
| Certifications | ATEX, IECEx, CSA, NEPSI, UKEX, SIL |
| Long-term Stability | 0.025% URL/year |
Advantages
Why Choose the Deltabar PMD78B?
The PMD78B is designed to reduce maintenance costs while improving measurement reliability.
Its integrated Bluetooth commissioning enables engineers to configure instruments safely from difficult-to-access locations without opening the housing.
Heartbeat Technology continuously monitors device health, allowing predictive maintenance and reducing unplanned downtime.
Combined with high measurement accuracy and excellent long-term stability, it is an ideal solution for critical industrial process control.
Comparison Table
Deltabar PMD78B vs Conventional Differential Pressure Transmitters
| Feature | Deltabar PMD78B | Conventional DP Transmitter |
|---|---|---|
| Bluetooth Configuration | ✔ | ✘ |
| Heartbeat Diagnostics | ✔ | ✘ |
| TempC Membrane | ✔ | ✘ |
| Accuracy | ±0.075% | ±0.2% |
| SIL Capability | ✔ | Optional |
| Predictive Maintenance | ✔ | Limited |
| Long-term Stability | Excellent | Standard |
| Remote Configuration | ✔ | Usually No |
| Multiple Communication Protocols | HART / PA / PROFINET | Usually HART Only |
Industries
Industries Served
- Oil & Gas
- Petrochemical
- Chemical Processing
- Power Plants
- Water & Wastewater
- Food & Beverage
- Pharmaceutical
- Pulp & Paper
- Mining
- Marine
- Steel
- Cement
Ordering Information
Available Configuration Options
Customers can select configurations based on application requirements, including:
- Pressure range
- Process connection
- Diaphragm seal type
- Capillary length
- Wetted material
- Fill fluid
- Housing material
- Output protocol
- Explosion-proof approvals
- Display module
- Bluetooth option
Frequently Asked Questions
What is the Deltabar PMD78B used for?
The Deltabar PMD78B is designed for accurate differential pressure measurement in flow, level, filter, and pressure monitoring applications.
Does the PMD78B support Bluetooth?
Yes. Optional Bluetooth connectivity allows remote configuration and diagnostics using the SmartBlue App.
Which communication protocols are available?
The transmitter supports 4-20mA HART, PROFIBUS PA, PROFINET with Ethernet-APL, and optional Bluetooth communication.
Is the PMD78B suitable for hazardous areas?
Yes. The transmitter is available with ATEX, IECEx, CSA, NEPSI, UKEX, and other international hazardous area certifications.
What industries commonly use the PMD78B?
It is widely used in oil & gas, chemical processing, power generation, water treatment, pharmaceutical manufacturing, and food processing.
