E+H Deltabar FMD71 Electronic Differential Pressure Transmitter Product Details

The E+H Deltabar FMD71 is a high-end electronic differential pressure transmitter utilizing capacitive ceramic sensor technology, designed for demanding industrial applications in level, flow, and differential pressure measurement. Renowned for its exceptional long-term stability, high accuracy, and outstanding overpressure resistance, it is the ideal choice for process control in industries such as chemical, oil & gas, and water treatment.

1. Highest Process Safety & Reliability:

· "Wear-free" ceramic technology eliminates risks of fatigue and creep associated with traditional metal diaphragms, excelling in Safety Instrumented Systems (SIL).

· Extreme overpressure capability prevents instrument damage and measurement interruption due to accidental overpressure or water hammer, ensuring production continuity.

2. Lowest Total Cost of Ownership (TCO):

· Maintenance-free design: Virtually unlimited sensor life and minimal long-term drift drastically reduce unplanned downtime and periodic calibration needs.

· Diagnostics prevent failures: Early fault warnings enable planned maintenance, avoiding unexpected incidents and production losses.

3. Broad Application Versatility:

· With its robust sensor and diverse material options, it handles the most demanding media-from clean water to strong acids, alkalis, and slurries-simplifying user inventory management.

4. Simplified Engineering & Commissioning:

· Linear output eliminates complex static pressure compensation calculations required by other principles (e.g., bubbler systems).

· Rich digital communication protocols facilitate easy integration into modern DCS/PLC systems for remote monitoring and parameter management.

The Deltabar FMD71 is particularly suited for differential pressure, level, and flow applications with extremely high demands for stability, safety, and media compatibility.

1. Chemical & Petrochemical Industry

· Applications: Level and interface measurement in reactors, distillation columns, separators; tank level for aggressive chemicals (sulfuric acid, caustic, chlorine); steam flow measurement (via orifice or nozzle).

· Value: Ceramic sensor and special alloy diaphragms resist corrosion for long-term stable measurement; high safety integrity meets SIL requirements.

2. Oil & Gas

· Applications: Level/interface control in oil/gas separators, scrubbers; differential pressure flow measurement for pipeline natural gas or LNG; differential pressure monitoring for water injection wells.

· Value: High pressure and shock resistance suitable for harsh environments like offshore platforms; various certifications (ATEX, IECEx) for hazardous areas.

3. Water & Wastewater Treatment

· Applications: Sludge level/interface measurement in clarifiers, thickeners; differential pressure monitoring of filters (backwash trigger); pump suction/discharge pressure monitoring.

· Value: Flush diaphragm design resists clogging from solids and fibers; IP67 rating suits wet environments.

4. Power Generation

· Applications: Boiler drum level measurement (via differential pressure level gauge); level in condensers, heaters; differential pressure monitoring in Flue Gas Desulfurization (FGD) systems.

· Value: Good long-term stability at high temperatures; strong overpressure resistance handles drastic pressure changes during unit start-up/shutdown.

5. Pharmaceutical & Food Industry

· Applications: Bioreactor level and pressure; pressure/flow verification in CIP systems; level control in sterile tanks.

· Value: Sanitary connections and FDA-compliant materials available; dead-zone-free design facilitates cleaning and sterilization.

· Measurement Accuracy: Up to ±0.1%

· Long-term Stability: Better than ±0.1% URL/10 years

· Overpressure Limit: Typically max. 40 MPa (model dependent)

· Operating Temperature: Process temperature up to 150°C (up to 400°C with cooling element); ambient temperature -40°C to +85°C

· Output Signal: 4...20 mA HART, PROFIBUS PA, FOUNDATION Fieldbus, WirelessHART

· Power Supply: 10.5 ... 45 V DC (2-wire), or fieldbus power

· Protection Rating: IP66/67, NEMA 4X

· Explosion Protection: ATEX, IECEx, FM, CSA, etc. (optional)

1. Electronic Differential Pressure Transmitter

2. Ceramic Capacitive Sensor

3. E+H Deltabar FMD71

4. High Accuracy DP Measurement

5. Overpressure Resistant Pressure Transmitter

6. Level Interface Measurement

7. Chemical Process Instrumentation

8. Heartbeat Technology Diagnostics

9. HART/Fieldbus Transmitter

10. SIL Safety Instrument

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