The ABB PDD300 All-Rounder Differential Pressure Transmitter combines ABB's P-300 transmitter platform with S26 diaphragm seals. The seals separate the sensing system from the process medium while transferring pressure through a filled capillary system or direct-mounted assembly, depending on the configuration.
Key Features
- Base accuracy: ±0.055% of calibrated span
- Span limits: 0.2 to 60,000 kPa
- Measurement functions: Differential pressure, flow, and liquid level
- Output: 4–20 mA with HART communication
- Diaphragm seal system: ABB S26 series, with direct- or remote-mounted configurations
- Process connections: Options designed for different flange and process connection standards
- Materials: Multiple diaphragm and wetted-material options for demanding process media
- User interface: Local configuration and optional backlit display
- Installation: M26 manifold mounting option
Applications
The PDD300 is suitable for chemical processing, oil and gas, power generation, pulp and paper, water treatment, and hygienic process applications when the correct seal, fill fluid, material, and connection are selected. Diaphragm seals are especially useful where process fluids are viscous, corrosive, prone to solidification, or too hot for direct transmitter connection.
Why Choose ABB PDD300?
The PDD300 combines precise differential pressure measurement with the process isolation provided by diaphragm seals. Its configurable seal arrangements and material choices help users adapt the transmitter to demanding industrial conditions and simplify maintenance planning.
1. What is the ABB PDD300 used for?
The PDD300 is used for differential pressure, flow, and liquid level measurement in industrial process systems.
2. What is the purpose of the diaphragm seal?
The diaphragm seal isolates the transmitter from the process medium and transfers pressure to the sensor, helping protect it from difficult or aggressive fluids.
3. What is the base accuracy of the PDD300?
ABB specifies a base accuracy of ±0.055% of calibrated span.
4. What is the measurement span of the ABB PDD300?
The published span limits are 0.2 to 60,000 kPa. The usable calibrated range depends on the selected sensor and configuration.
5. What output signal does the PDD300 support?
The listed output is 4–20 mA with HART communication.
6. Can the PDD300 be used with corrosive or viscous fluids?
Yes, when the diaphragm seal design, fill fluid, and wetted materials are selected to suit the process medium.
7. Does the PDD300 support remote diaphragm seals?
Yes. The S26 system supports remote diaphragm seal configurations, as well as applicable direct-mounted arrangements.
8. Can the PDD300 measure tank level?
Yes. It can measure liquid level in open or closed tanks when appropriately configured for the tank and process conditions.
9. What industries use the ABB PDD300?
Typical applications include chemical processing, oil and gas, power generation, pulp and paper, water treatment, and selected hygienic processes.
10. What information is required to select a PDD300?
Provide the measurement range, process medium, operating temperature and pressure, process connection, required diaphragm seal arrangement, wetted materials, capillary length if applicable, output protocol, and certification requirements.
