Introduction
The Endress+Hauser Deltabar FMD72 is a high-performance electronic differential pressure (dp) system designed for precise level, volume, and mass measurement of liquids in pressurized tanks, distillation columns, and evaporators. Unlike traditional mechanical solutions, it features two robust metal sensor modules paired with a single transmitter, eliminating common capillary-related issues while delivering exceptional reliability and long-term stability. Engineered for demanding industrial and hygienic applications, it meets strict explosion-proof standards and supports multivariable monitoring, making it a versatile choice for process control across diverse industries.
Specification
| Parameter | Specification |
|---|---|
| Measuring Principle | Differential pressure (electronic system) |
| Measuring Range | 400 mbar to 40 bar (6 psi to 600 psi) |
| Accuracy | Single sensor: up to ±0.05% (Platinum grade), System: up to ±0.07% |
| Process Temperature | -40 to +125°C (-40 to +257°F), optional up to 250°C (480°F) |
| Ambient Temperature | -40 to +80°C (-40 to +176°F) |
| Max. Overpressure Limit | 160 bar (2400 psi) |
| Communication Protocol | 4…20 mA HART |
| Long-Term Stability | 0.05% of URL/year (per sensor) |
| Process Connections | Threads, Flanges (DIN/ASME/JIS), Hygienic (DIN 11851, Tri-Clamp, etc.) |
| Certifications & Approvals | ATEX, FM, CSA, IECEx, NEPSI, INMETRO, UK Ex, NACE MR0175, EHEDG, 3A |
Key Advantages
High-Rated Metal Sensor Performance: Built with durable metal sensors offering 0.05% (Platinum grade) accuracy, 0.05% URL/year stability, and a 160 bar overpressure limit, ideal for high-pressure industrial environments.
Wide Operating & Media Compatibility: Handles process temperatures from -40°C to +125°C (optional 250°C) with 316L/Alloy C process diaphragms, supporting both standard and corrosive liquid applications.
Advanced Multivariable Diagnostics: Delivers real-time differential pressure, head pressure, and sensor temperature data via 4…20 mA HART protocol, enabling proactive maintenance and process monitoring.
Versatile Process Connections: Supports threaded, flanged (DIN/ASME/JIS), and hygienic connections (DIN 11851, Tri-Clamp, etc.), ensuring seamless integration into standard and sanitary piping systems.
Certified for Safety & Hygiene: Backed by global approvals including ATEX, IECEx, EHEDG, and 3A, meeting NACE MR0175 standards for use in hazardous and hygienic industrial environments.