Intelligent High-Temperature Pressure Transmitter with HART/FF/PROFIBUS
1. Why You Need It
High-temperature processes need a transmitter that can withstand the heat while providing intelligent, multi-protocol communication. This intelligent pressure transmitter measures up to 0-100 MPa with HART, Foundation Fieldbus and PROFIBUS protocols, making it ready for modern smart-plant integration. With a CL150 (DN25) connection and multiple thread options, it delivers precise, digitally-connected pressure measurement for high-temperature process and utility applications.
2. Working Principle
The transmitter measures process pressure with a high-accuracy sensing element and converts it to a 4-20 mA signal with superimposed digital communication (HART, Foundation Fieldbus or PROFIBUS). The intelligent electronics provide advanced diagnostics, remote configuration and multi-variable data. The high-temperature design, with appropriate diaphragm materials and connection options, allows measurement in elevated-temperature process conditions.
3. Key Advantages
- Intelligent, multi-protocol design
- HART / FF / PROFIBUS support
- 0 to 100 MPa range
- 24 V DC power supply
- CL150 (DN25) connection
- G1/2, G1/4, M20×1.5 threads
- High-temperature capability
- Advanced diagnostics
- Gauge / absolute / sealed gauge
- Suitable for gas and liquid media
Common Pain Points & Solutions
| Problem | Conventional Issue | Our Solution | Result |
|---|
| High-temperature process | Standard transmitters degrade | High-temperature design | Reliable in hot processes |
| Smart-plant integration | Analog-only limits | HART / FF / PROFIBUS | Modern digital integration |
| Wide pressure span | Limited-range instruments | 0 to 100 MPa | One transmitter, wide coverage |
| Remote diagnostics | On-site checks needed | Intelligent diagnostics | Remote monitoring, less downtime |
Application Cases
Industry: Process
Application: High-temp reactor pressure
Medium: Process liquid / gas
Pressure Range: 0-10 MPa
Operating Temperature: 100-250 °C
Installation Environment: Process plant
Customer Challenge: Reliable at temperature
Previous Problem: Sensor degraded
Solution: Intelligent high-temp transmitter
Installation Location: Reactor
Result: Reliable hot-process measurement
Industry: Power
Application: Steam line pressure
Medium: Steam
Pressure Range: 0-6.0 MPa
Operating Temperature: 150-300 °C
Installation Environment: Power plant
Customer Challenge: Accurate steam pressure
Previous Problem: Sensor heat failure
Solution: High-temp transmitter, HART
Installation Location: Steam header
Result: Accurate steam measurement
Industry: Chemical
Application: High-pressure process
Medium: Chemical
Pressure Range: 0-100 MPa
Operating Temperature: 10-150 °C
Installation Environment: Chemical plant
Customer Challenge: Wide-range measurement
Previous Problem: Limited-range sensor
Solution: 0-100 MPa intelligent transmitter
Installation Location: Process line
Result: Wide-range, reliable control
Industry: Utility
Application: District heating pressure
Medium: Hot water
Pressure Range: 0-2.5 MPa
Operating Temperature: 80-150 °C
Installation Environment: Utility plant
Customer Challenge: Networked monitoring
Previous Problem: Analog-only system
Solution: FF/PROFIBUS transmitter
Installation Location: Heat exchanger
Result: Networked smart monitoring
Technical Specifications
| Specification | Value |
|---|
| Type | Intelligent pressure transmitter |
| Protocol | HART / FF / PROFIBUS |
| Measurement Range | -0.1 to 0 to 100 MPa |
| Power Supply | 24 V DC |
| Connection | CL150 (DN25) |
| Thread Options | G1/2, G1/4, M20×1.5 |
| Media | Gas / liquid |
| Pressure Type | Gauge / Absolute / Sealed Gauge |
FAQ
Q: What is an intelligent pressure transmitter?
An intelligent pressure transmitter is a microprocessor-based instrument that provides digital communication, advanced diagnostics and remote configuration in addition to the standard 4-20 mA signal. Intelligent transmitters can report device status, perform self-diagnostics and be configured remotely, reducing maintenance effort and improving plant asset management.
Q: What protocols does it support?
It supports HART, Foundation Fieldbus (FF) and PROFIBUS protocols. HART overlays digital communication on the 4-20 mA loop, while FF and PROFIBUS are full digital fieldbus protocols. This multi-protocol support lets the transmitter integrate with a wide range of DCS and asset-management systems.
Q: What is the measurement range?
The measurement range is -0.1 to 0 to 100 MPa, covering a very wide span from slight vacuum to high pressure. This breadth allows one transmitter platform to serve many process, power and chemical applications with a single instrument design.
Q: Is it suitable for high temperature?
Yes, the transmitter is designed for high-temperature process measurement, with appropriate materials and connection options for elevated temperatures. The specific temperature limit depends on the configuration and materials, and for the highest temperatures a remote-seal or cooling-extension design may be specified.
Q: What power supply does it need?
It operates on a 24 V DC supply (with 5 V DC and 15-30 V DC options for certain configurations), the standard for industrial instrumentation. The low-voltage supply integrates with standard control panels and power systems.
Q: What process connections are available?
The transmitter offers a CL150 (DN25) flanged connection and threaded options including G1/2, G1/4 and M20×1.5. The choice depends on the vessel or pipe fitting and the process pressure and temperature.
Q: What pressure types are available?
It offers gauge, absolute and sealed gauge pressure types. Gauge references atmosphere, absolute references vacuum, and sealed gauge uses a fixed internal reference. The correct type is selected based on the application's reference requirements.
Q: What are the benefits of intelligent diagnostics?
Intelligent diagnostics continuously monitor the transmitter's health and can detect issues such as sensor drift, electronics faults or out-of-range conditions before they cause process problems. This enables predictive maintenance, reducing unplanned downtime and improving reliability.
Q: How does it integrate with a DCS?
The transmitter connects to a DCS either through its 4-20 mA analog signal with HART, or directly through Foundation Fieldbus or PROFIBUS digital networks. Digital fieldbus integration reduces wiring and provides richer data, while HART preserves compatibility with existing analog infrastructure.
Q: Where is it used?
It is used in high-temperature process reactors, power plant steam lines, high-pressure chemical processes and district heating systems. It provides intelligent, multi-protocol pressure measurement for demanding process and utility applications.
