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PDS879 Ultra-High Temperature Remote Seal Pressure Transmitter
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PDS879 Ultra-High Temperature Remote Seal Pressure Transmitter
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The PDS879 Ultra-High Temperature Remote Seal Pressure Transmitter is designed for pressure measurement in extreme high-temperature applications up to 700°C. With a special filling fluid and remote seal structure, it is suitable for measuring pressure in molten salt, heat transfer oil, ultra-high temperature asphalt, and other severe thermal process conditions.
With ±0.1% FS accuracy, 20:1 rangeability, long-term stability of ±0.1% FS over 10 years, and an ambient temperature range of -40°C to +80°C, the PDS879 is suitable for solar thermal, chemical, energy, asphalt, heat transfer, and high-temperature industrial pressure measurement applications.
The PDS879 ultra-high temperature remote seal pressure transmitter is used for process pressure measurement where the medium temperature is far beyond the allowable temperature of a standard pressure transmitter.
In applications such as solar thermal molten salt, heat transfer oil, and high-temperature asphalt, the process temperature can be extremely high. If a transmitter is mounted directly on the process connection, the sensor, electronics, sealing parts, and filling oil may be damaged by excessive heat.
The PDS879 uses a remote seal pressure measurement structure with special filling fluid. The diaphragm seal contacts the process medium, while the transmitter is installed away from the high-temperature process connection. Pressure is transmitted through the filled system to the sensor, helping protect the transmitter body and electronics from direct high-temperature exposure.
The PDS879 is designed for special pressure measurement applications where ordinary pressure transmitters, syphons, or cooling adapters may not be sufficient.
Typical high-temperature media include:
The special filling fluid and remote seal structure allow the pressure transmitter to work with process temperatures up to 700°C, depending on actual configuration and site conditions.
For this type of application, transmitter selection should not only consider pressure range and output signal. The process temperature, installation distance, diaphragm seal structure, filling fluid, capillary design, heat dissipation, and medium characteristics must all be checked carefully.
The PDS879 is designed for pressure measurement under process temperatures up to 700°C, making it suitable for severe thermal process conditions.
The transmitter uses special filling fluid for ultra-high temperature applications. This is essential for pressure transfer stability and long-term reliability in molten salt, heat transfer oil, and asphalt applications.
The remote seal design separates the transmitter from the high-temperature process connection, reducing direct thermal impact on the electronics and sensor module.
The PDS879 is suitable for solar thermal molten salt systems, heat transfer oil systems, and other high-temperature energy or chemical processes.
The transmitter provides ±0.1% FS accuracy, suitable for industrial pressure monitoring in high-temperature process systems.
The maximum rangeability of 20:1 provides flexibility for different calibrated pressure spans.
The transmitter provides long-term stability of ±0.1% FS over 10 years, helping reduce recalibration frequency and maintenance workload.
The PDS879 supports intelligent diagnostics and simulation functions, helping users check transmitter status, verify output signals, and simplify commissioning or troubleshooting.
Different diaphragm, flange, and wetted material options can be selected according to medium corrosion, viscosity, and temperature requirements.
| Item | Specification |
|---|---|
| Product Name | PDS879 Ultra-High Temperature Remote Seal Pressure Transmitter |
| Product Type | High Temperature Remote Seal Pressure Transmitter |
| Measurement Type | Pressure Measurement |
| Typical Media | Molten Salt, Heat Transfer Oil, Ultra-High Temperature Asphalt |
| Maximum Process Temperature | Up to 700°C |
| Accuracy | ±0.1% FS |
| Maximum Rangeability | 20:1 |
| Long-Term Stability | ±0.1% FS / 10 years |
| Measuring Range | 0 to 10 MPa |
| Ambient Temperature | -40°C to +80°C |
| Filling System | Special Filling Fluid |
| Main Functions | Pressure measurement, signal output, remote setting, monitoring, diagnostics, simulation |
| Typical Structure | Remote seal / capillary / high-temperature isolation structure |
The PDS879 can be used in solar thermal molten salt systems where process temperature is extremely high. It helps monitor pressure in molten salt pipelines, tanks, heat exchange sections, and thermal storage systems.
Suitable for heat transfer oil systems in chemical plants, heating systems, thermal energy systems, and industrial process heating loops.
Used for asphalt pipelines, storage tanks, heating systems, and production processes where the medium is hot, viscous, and difficult for standard pressure instruments.
Applied in high-temperature reactors, thermal cracking processes, hot liquid pipelines, and special chemical process systems.
Suitable for pressure monitoring in thermal energy storage systems, high-temperature circulation systems, and heat exchange equipment.
With suitable diaphragm seal design, the transmitter can be used for hot viscous fluids where ordinary small pressure ports may be blocked or damaged.
When selecting a PDS879 ultra-high temperature remote seal pressure transmitter, the following details should be confirmed:
For ultra-high temperature applications, installation accessories should be selected carefully. Common accessories may include:
For molten salt, heat transfer oil, and high-temperature asphalt applications, the compatibility of gasket material, seal material, filling fluid, and flange design must be confirmed before ordering.
| Item | Standard Pressure Transmitter | PDS879 Ultra-High Temperature Remote Seal Pressure Transmitter |
|---|---|---|
| Process Temperature | Suitable for normal process temperatures | Designed for applications up to 700°C |
| Installation | Direct connection or simple adapter | Remote seal and high-temperature filling system |
| Medium Contact | Medium may contact standard process port | Medium contacts high-temperature diaphragm seal |
| Typical Media | Water, air, oil, gas, steam | Molten salt, heat transfer oil, hot asphalt |
| Protection Method | Syphon, cooling element, or direct connection | Remote seal with special filling fluid |
| Application Complexity | Standard industrial service | Severe thermal process service |
For normal steam or hot water service, a syphon or cooling element may be sufficient. For 700°C molten salt, heat transfer oil, or ultra-high temperature asphalt, a dedicated high-temperature remote seal transmitter such as the PDS879 is more appropriate.
SIYelectric supplies PDS879 ultra-high temperature remote seal pressure transmitters for solar thermal, chemical, asphalt, energy, and high-temperature industrial projects. We can help review operating conditions, check model selection, confirm seal structure, match installation accessories, and prepare quotations based on actual process data.
For accurate quotation, please provide:
SIYelectric can also support related accessories such as mating flanges, high-temperature gaskets, spiral wound gaskets, flushing rings, mounting brackets, explosion-proof cable glands, capillary protection parts, valves, tubing, and fittings.
Available documents may include technical datasheet, certificate of conformity, inspection report, packing list, and commercial invoice, depending on the project and order requirements.
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