Product Critical Technical Advantages
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Engineering excellence in material science features a single measuring tube constructed from Tantalum or Zirconium. These materials are nearly inert to the most aggressive chemicals, such as hydrochloric acid, sulfuric acid, and bromine, providing a service life and safety level that standard stainless steel or even nickel alloys cannot match.
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Precision engineering for flexible system integration is enabled by the compact dual-compartment transmitter. With up to 3 freely combinable I/Os and support for modern Ethernet protocols, the H 300 fits into complex control architectures while allowing wiring access from a single side to simplify installation and maintenance.
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Integration of operational intelligence through Heartbeat Technology provides a permanent internal health check and documented verification of the sensor’s integrity. In highly corrosive environments, this allows operators to monitor the health of the Tantalum or Zirconium tube in real-time, preventing unexpected failures and extending recalibration cycles.
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Full access to process and diagnostic data is available via integrated WLAN and a backlit display with touch control. This allows for wireless commissioning and troubleshooting, meaning personnel can interact with the device without opening the housing—a critical safety advantage when working near corrosive chemicals.
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Reduced complexity through multi-variable measurement eliminates the need for separate temperature or density transmitters in hazardous chemical lines. By providing mass flow, density, and temperature from a single measurement point, the H 300 reduces the number of potential leak points and flange connections.
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Space-saving installation is guaranteed by the Coriolis principle, which is independent of the flow profile. The Promass H 300 requires no straight inlet or outlet piping runs, offering ultimate design flexibility in dense chemical processing plants or modular skids.
Key Device Specifications
| Feature | Specification |
| Nominal Diameter | DN 8 to 50 (3/8 to 2″) |
| Wetted Materials | Tantalum, Zirconium |
| Max. Temperature | Up to +205 °C (+401 °F) |
| Transmitter Housing | Compact dual-compartment with WLAN access |
| Connectivity | Ethernet/IP, PROFINET, Modbus RS485, 4-20mA HART |
| Verification | Heartbeat Technology (ISO 9001 compliant) |
Field of Application
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Specialty Chemical Production: The definitive choice for measuring mass flow and density in the production of high-purity acids and reactive chemical intermediates.
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Metal Refining & Pickling: Used to accurately monitor the consumption and flow of aggressive pickling liquors and leaching acids in metallurgical processes.
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Pharmaceutical Synthesis: Ideal for processes involving highly reactive reagents where wetted part compatibility with Tantalum or Zirconium is required for product purity and safety.
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Acid Dosing Systems: Provides the precise control needed for pH adjustment or catalyst injection in large-scale industrial water treatment and chemical reactors.




