PDS803 Direct Mount Pressure Transmitter

PDS803 Direct Mount Pressure Transmitter Overview

The PDS803 direct mount pressure transmitter is used for continuous pressure measurement of liquids, gases, and steam. It can be installed directly on pipelines, tanks, vessels, pumps, compressors, steam lines, hydraulic systems, and process equipment.

This transmitter is available for both gauge pressure and absolute pressure measurement. It converts the measured pressure into a standard industrial signal and can be connected to PLC, DCS, HART communicator, PROFIBUS PA system, or FOUNDATION Fieldbus system for monitoring, configuration, and maintenance.

For industrial projects that require stable pressure measurement, smart diagnostics, and remote configuration, the PDS803 provides a practical solution for modern process automation.

Smart Pressure Transmitter Output and Communication Options

The PDS803 pressure transmitter supports several output and communication options to match different automation system requirements.

For most pressure measurement applications, 4–20 mA with HART is the most commonly selected output because it is easy to integrate with existing PLC and DCS systems while still allowing smart configuration, diagnostics, and loop checking.

Key Features of the PDS803 Industrial Pressure Transmitter

High Accuracy Pressure Measurement

The PDS803 offers accuracy up to ±0.04% FS, with the highest accuracy option up to ±0.025% FS depending on configuration. This makes it suitable for process loops where stable and accurate pressure data is required.

Fast 90 ms Response Time

With a response time of 90 ms, the transmitter can provide fast pressure signal feedback for process monitoring, control loops, and equipment protection.

100:1 Rangeability

The maximum rangeability is 100:1, allowing one transmitter model to cover a wider calibrated range. This improves selection flexibility and can reduce inventory complexity for project users.

Long-Term Stability for Process Pressure Monitoring

The transmitter provides long-term stability of ±0.1% FS over 10 years, helping reduce recalibration frequency and maintenance workload during long-term operation.

Intelligent Diagnostics, Simulation, and Testing

The PDS803 includes smart diagnostic, simulation, and detection functions. These functions help users verify transmitter status, check loop output, identify abnormal conditions, and simplify commissioning or troubleshooting.

Multiple Configuration Methods

The transmitter can be configured through HART communication tools, fieldbus systems, or compatible communication devices depending on the selected output protocol.

Multiple Corrosion-Resistant Material Options

Different wetted material options can be selected for corrosive or chemically demanding media. Material selection should be confirmed according to process medium, temperature, pressure, and corrosion characteristics.

Technical Specifications for PDS803 Pressure Transmitter Selection

PDS803G Gauge Pressure Transmitter and PDS803A Absolute Pressure Transmitter

The PDS803 series can be selected according to the required pressure reference type.

PDS803G Gauge Pressure Transmitter

The PDS803G gauge pressure transmitter measures pressure relative to atmospheric pressure. It is commonly used for pipeline pressure, pump outlet pressure, tank pressure, hydraulic systems, compressed air, steam lines, and general process pressure monitoring.

PDS803A Absolute Pressure Transmitter

The PDS803A absolute pressure transmitter measures pressure relative to absolute vacuum. It is suitable for vacuum systems, sealed vessels, gas systems, evaporation processes, and applications where atmospheric pressure variation should not affect the measurement result.

Industrial Applications of PDS803 Smart Pressure Transmitter

Chemical and Petrochemical Pressure Measurement

Used for pressure monitoring in reactors, pipelines, dosing systems, pumps, storage tanks, separators, and process units. For corrosive media, suitable diaphragm and process connection materials should be selected according to the actual chemical conditions.

Power Generation and Steam Pressure Monitoring

Suitable for boiler auxiliary systems, steam lines, feedwater systems, condensate lines, and utility pressure monitoring. For high-temperature steam, a syphon, cooling element, or diaphragm seal may be required to protect the transmitter.

Oil and Gas Process Pressure Measurement

Applied in gas pipelines, oil transfer systems, compressor systems, pressure control skids, and auxiliary process lines where stable pressure measurement is required.

Water Treatment and Utility Systems

Used in pumping stations, filtration systems, water distribution pipelines, desalination equipment, wastewater treatment systems, and utility pressure monitoring.

General Industrial Automation Systems

Suitable for PLC and DCS control loops requiring 4–20 mA HART, PROFIBUS PA, or FOUNDATION Fieldbus FF signals.

Equipment Pressure Monitoring

Can be installed on tanks, vessels, pumps, compressors, hydraulic systems, pneumatic systems, and other equipment requiring continuous pressure measurement.

How to Select a PDS803 Direct Mount Pressure Transmitter

When selecting a PDS803 pressure transmitter, the following details should be confirmed:

1. Pressure type
   Select PDS803G for gauge pressure or PDS803A for absolute pressure.
2. Measuring range
   Confirm the normal operating pressure, maximum pressure, and required calibrated range.
3. Output signal
   Choose 4–20 mA + HART, PROFIBUS PA, or FOUNDATION Fieldbus FF according to the control system.
4. Accuracy requirement
   Confirm whether standard accuracy is sufficient or whether the higher accuracy option is required.
5. Process medium
   Confirm whether the medium is liquid, gas, steam, corrosive chemical, viscous fluid, or crystallizing medium.
6. Wetted material
   Select suitable diaphragm and process connection materials according to medium compatibility.
7. Process temperature
   For hot steam or high-temperature liquid, confirm whether a syphon, cooling element, or diaphragm seal is required.
8. Process connection
   Confirm threaded connection, flange connection, adapter, valve, or manifold requirements.
9. Explosion-proof requirement
   For hazardous areas, confirm the required explosion-proof certification or project standard.
10. Display and electrical connection
    Confirm whether LCD display, M20×1.5, 1/2 NPT, or explosion-proof cable gland is required.

Accessories for PDS803 Pressure Transmitter Installation

For complete pressure transmitter installation, the following accessories may be selected according to site conditions:

• Needle valves
• Gauge valves
• Two valve manifolds
• Syphons for steam pressure measurement
• Pressure instrument cooling elements
• Explosion proof cable glands
• Mounting brackets
• Threaded flanges
• Tube fittings and impulse tubing
• PTFE gaskets and spiral wound gaskets
• Flushing rings for diaphragm seal systems

For steam, corrosive media, viscous media, high-temperature applications, or hazardous areas, accessory selection should be confirmed together with the transmitter model.

PDS803 Pressure Transmitter Supplier Support from SIYelectric

SIYelectric supplies PDS803 direct mount pressure transmitters for industrial projects, replacement orders, and process instrumentation procurement. We can support model code checking, datasheet review, accessory matching, and quotation based on actual operating conditions.

For accurate quotation, please provide:

• pressure type: gauge or absolute
• measuring range
• process medium
• process temperature
• process pressure
• output signal requirement
• process connection
• wetted material requirement
• explosion-proof or certification requirement
• display and electrical connection
• required accessories

SIYelectric can also help match pressure transmitter accessories such as manifolds, needle valves, mounting brackets, syphons, cooling elements, explosion-proof cable glands, gaskets, tubing, and fittings.

Available documents may include technical datasheet, certificate of conformity, inspection report, packing list, and commercial invoice, depending on order and project requirements.