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pressure transmitters are intelligent measuring instruments at the heart of modern industrial processes. They combine the accuracy of reliable pressure measurement with the benefits of HART digital communication, enabling real-time access to data, diagnostics, and configuration parameters. This dual capability—analog (4–20 mA) and digital—facilitates plant monitoring while improving operational performance.
Designed to accurately measure gauge pressure, absolute, or differential gauge pressure, pressure transmitters are used in a wide range of applications, including process control, flow monitoring, drift or leak detection, and liquid or gas level control. Their ability to provide reliable data, even in demanding environments or for sensitive measurements, directly contributes to the safety, availability, and optimization of facilities.
Beyond measurement, HART technology enables remote configuration, access to advanced diagnostics, and predictive maintenance. This allows operators to anticipate deviations, reduce on-site interventions, and improve production continuity. This approach is fully aligned with digital industrialization and IIoT integration strategies.
At Fuji Electric, our range of pressure transmitters combines high precision, ruggedness, and ease of integration into your control systems. Our solutions are designed to meet the demands of the most challenging industrial environments, particularly in the chemical, energy, water treatment, and oil and gas sectors, with a clear goal: to ensure the safety of your processes while improving their long-term performance.
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View more productsAre you looking for a smart pressure measurement solution with digital communication? Discover pressure transmitters , which combine a precise 4–20 mA analog output with bidirectional digital communication. From basic process monitoring to advanced diagnostics, devices using the HART protocol offer high performance, remote configuration capabilities, and full data access via standard wiring.
Find the right HART pressure transmitter solution for your needs and improve your process control today.
Whether you need basic pressure monitoring or advanced process control, there’s a HART pressure transmitter for every industrial requirement.
Standard differential, relative, and absolute pressure measurement covers applications in the chemical, oil and gas, pulp and paper, metallurgy, water treatment, HVAC, and general industrial sectors. These devices provide basic HART functionality, including remote zero and span adjustment as well as device diagnostics via universal commands. HART pressure transmitters are widely used in the oil and gas, chemical processing, water treatment, and food and beverage industries for accurate pressure monitoring and process safety.
HART transmitters are widely used in the oil, chemical, water treatment, and food processing industries to ensure measurement accuracy and process safety.
Cost-effective solutions allow you to enjoy the benefits of digital technology without excessive complexity. A HART communicator provides access to parameters for adjusting the configuration, while compatibility with most HART control systems ensures seamless integration. The stainless steel construction and rugged sensors guarantee stability and reliability in a variety of environments.
Precise measurement of differential, relative, and absolute pressure enables the monitoring of flow rates, levels, and filters. These transmitters utilize advanced capacitive sensors, such as Fuji Electric’s patented silicon-based technology, which can detect membrane deformation with an accuracy of up to ±0.04% of full scale.
Advanced HART diagnostics provide information on the status of the process variable and the health of the device for critical control in the chemical and petrochemical industries. Multiple pressure ranges from 0.1 kPa to 20,000 kPa enable the device to handle demanding process conditions. Superior long-term stability of ±0.1% over five years reduces calibration frequency and maintenance costs in pipelines and process systems.
Intrinsically safe and explosion-proof designs meet the stringent requirements of oil, gas, and chemical applications. ATEX, IECEx, and FM certifications allow for use in explosive atmospheres where Ex ia protection is required. A rugged design combined with enhanced HART communications enables remote monitoring in areas where direct access is difficult or hazardous.
Safety-critical applications are certified to SIL 2/SIL 3 in accordance with IEC 61508/61511, with a safe failure rate exceeding 92%. These HART transmitters provide reliable pressure measurement and comprehensive diagnostics essential for safety instrumented systems.
Choosing the right HART pressure transmitter ensures optimal performance and seamless integration with your control and monitoring system.
Standard-precision HART transmitters with essential communication features meet common monitoring needs. Simple configuration via universal HART commands allows for adjustment of the range and damping without specialized tools. This cost-effective solution delivers the benefits of digital technology for non-critical applications.
Basic diagnostics, including device status and analog output information, allow you to verify the validity of measurement signals. These models are suitable for applications where accuracy is important but where advanced diagnostic capabilities are secondary to cost considerations.
High-precision HART transmitters with advanced diagnostics meet the most demanding control requirements. Device-specific controls offer great flexibility in configuration and calibration. Accuracies of up to ±0.04% of span and excellent long-term stability enable process optimization.
Advanced diagnostics, including process variable quality and device performance indicators, help identify potential issues before they impact operations. These transmitters are particularly well-suited for applications where measurement reliability directly affects product quality, safety, or regulatory compliance.
HART compatibility over a 4–20 mA loop ensures seamless integration with existing analog systems. The communication protocol superimposes digital signals onto standard current loops, ensuring backward compatibility with traditional 4–20 mA control while adding the benefits of digital technology.
No additional wiring is required to connect HART to existing systems. This approach allows for a gradual transition from analog systems to digital control systems, while protecting existing investments.
Predictive diagnostics and condition monitoring capabilities via HART communication enable the implementation of proactive maintenance strategies. Integration with asset management systems allows maintenance to be scheduled based on the actual condition of the equipment rather than on fixed intervals.
A better understanding of the process, made possible by access to multiple variables and diagnostic information, improves operational decision-making. These HART transmitter installations provide a solid foundation for IIoT deployments and comprehensive equipment monitoring.
The superior performance of HART pressure transmitters is due to proven measurement technology and robust communication implementation.
Capacitive and piezoresistive sensors offer exceptional accuracy and stability across wide operating ranges. Fuji Electric differential pressure transmitters use a proprietary silicon capacitive chip with digital signal processing to ensure precise measurement and excellent thermal compensation.
Linearization algorithms correct for sensor nonlinearities, ensuring consistent performance across the entire operating range. Overpressure protection—up to 225 MPa on high-pressure models—and a rugged design ensure long-term reliability of up to 25 years under optimal conditions.
Two-way digital communication superimposed on the 4–20 mA signal enables simultaneous analog control and digital data exchange without interference. The HART modem operates at approximately 1,200 baud, providing sufficient bandwidth for configuration, diagnostics, and secondary variables.
Universal commands—which are widely used and device-specific—enable comprehensive control of the equipment. The standard HART protocol—now in version 7 with extended universal commands—ensures interoperability across manufacturers while enabling specific features through device description files.
Process variable status and quality indicators improve the reliability of the control system. SmartHealth diagnostics provide early warning in the event of sensor drift, loop issues, or developing failures.
Loop integrity diagnostics check the wiring, power supply, and communication quality. Comprehensive device information facilitates maintenance and troubleshooting, reducing response times and preventing unplanned downtime.
Implementing the HART protocol enhances your pressure measurement capabilities while maintaining compatibility with your existing infrastructure.
The standard 2-wire 4–20 mA loop connection carries both the analog signal and HART communication. A minimum resistance of approximately 250 Ω is required to ensure proper transmission of the HART signal, while the supply voltage is typically between 10.5 and 45 VDC for non-ATEX installations.
Proper grounding and cable shielding protect against electromagnetic interference. Verifying communication using a HART communication tool, a HART pocket device, or a supervisory system allows you to validate the installation before commissioning.
The HART protocol enables remote configuration, calibration, and diagnostics of pressure transmitters to reduce maintenance costs and downtime.
Initial commissioning uses a portable HART communicator—such as Fuji Electric’s Pocket HART —or a supervisory system interface to access all parameters. Range configuration, damping adjustment, and ID assignment are performed via HART commands without local access.
Installing device description files enables advanced functionality in monitoring systems. Verifying and adjusting the calibration ensures accuracy before the system goes live. Security features, including locks and passwords, prevent unauthorized modifications.
Discover the benefits that make Fuji Electric HART pressure transmitters the preferred choice for demanding process applications.
Outstanding accuracy of ±0.04% of full scale and excellent long-term stability, achieved through advanced sensor technology and high-quality manufacturing, ensure reliable measurements for critical processes. Full implementation of the HART protocol, including both universal and specific commands, provides complete access to configuration, calibration, and diagnostic functions.
A robust design enables operation in harsh industrial environments and extreme conditions ranging from -90 °C to +400 °C with appropriately configured diaphragm seals . Specialized materials, including Inconel 625 diaphragms as well as gold or ceramic coatings, enable the handling of corrosive fluids and specific applications such as hydrogen.
Extensive application expertise and dedicated technical support facilitate the optimal selection and implementation of equipment across various industrial sectors. The global service network ensures rapid support, calibration services, and the availability of spare parts. Proven experience in demanding industries such as oil and gas, chemicals, water treatment, and power generation demonstrates reliability in the most critical applications.
With measurement ranges spanning from a few fractions of a kPa up to 150 MPa, response times of less than 40 ms, and great flexibility in terms of materials and communication options, Fuji Electric’s line of HART pressure transmitters covers virtually all process pressure measurement needs.
The integration of SmartHealth diagnostics and compliance with the NAMUR NE43 standard make these transmitters ideal solutions for modern predictive maintenance strategies and IIoT architectures.
Precision, digital communication, and expert support to optimize your industrial processes.
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