Differential pressure transmitter with diaphragm seal PDD300

Overview

The all‑rounder differential pressure transmitter PDD300 with S26 diaphragm(s) represents the latest evolutionary step in the wide ABB pressure transmitter portfolio.

With the new Backlight display and optional Bluetooth, Digital Advanced Diagnostic feature and the QR code ensure a top‑level usability experience.

Users can easily find the right application solution for their measurement needs with excellent precision for pressure, level and flow measurements, using advanced materials to withstand highly critical process fluids and hydrogen permeation conditions (H‑Shield).

The PDD300 has a straightforward accuracy performance level of ±0.055% of span, full process compatibility to highest industry standards (e.g., NACE, ASME, etc.), manifolds M26 mounting option, and combined multiple certifications (ATEX/IECEx/CSA North America and others).

In addition, PDD300 features Plugged Impulse Line Detection (PENDING) as standard, helping customers detect when the impulse line is going to be plugged. This is real predictive maintenance.

SIL 2/3 certificate (COMING SOON) according to IEC 61508 standard for use in safety instrumented systems for SIL2 applications in a single transmitter configuration (1oo1) and for SIL3 applications in a redundant configuration (1oo2).

PDD300 features WirelessHART (COMING SOON) communication protocol, allowing the addition of pressure measurement points throughout your operation. You can now monitor hard‑to‑reach locations and keep your employees out of dangerous and hazardous areas. The PDD300 WirelessHART pressure transmitters have a battery life of about 10 years at 32‑second update rates, delivering a very cost‑effective and reliable solution to monitor your process assets.

Shorten installation times by eliminating complex wired infrastructures and lower overall implementation costs of process measurement with ABB wireless devices featuring WirelessHART communications – Measurement made easy.

Typical Applications of Differential Pressure Transmitter with Diaphragm Seal PDD300

The differential pressure transmitter with diaphragm seal PDD300 is ideal for applications where the process medium is corrosive, viscous, crystallizing, or contains solids. Common examples include:

• Flow measurement of dirty or slurry liquids in chemical plants

• Level measurement in closed tanks with corrosive media (e.g., acids, caustics)

• Differential pressure monitoring across filters and strainers in food processing

• High‑temperature steam flow measurement with remote diaphragm seals

• Pressure and level in pulp & paper digesters

• Marine and offshore process measurement where diaphragm seal protects against saltwater corrosion

Why Choose a Differential Pressure Transmitter with Diaphragm Seal

Standard differential pressure transmitters have impulse lines that can clog or corrode when measuring dirty or aggressive media. A differential pressure transmitter with diaphragm seal eliminates most impulse line problems by placing a flexible membrane directly at the process connection. This improves reliability, reduces maintenance, and makes the measuring point suitable for hygienic, viscous, or high‑temperature applications.

The PDD300 goes further with plugged impulse line detection (predictive maintenance), SIL readiness, and optional WirelessHART – features not found in basic diaphragm seal transmitters.

Selection Information Required for Quotation

To confirm the correct differential pressure transmitter with diaphragm seal PDD300 configuration, please provide:

• Existing model code or nameplate photo

• Measured medium and its properties (viscosity, corrosiveness, solids content)

• Pressure range and differential pressure

• Process temperature

• Process connection type, size, and flange rating (ASME or EN)

• Diaphragm material and fill fluid requirements

• Remote seal type (direct mount or capillary)

• Capillary length (if remote)

• Output signal (4–20 mA HART, WirelessHART)

• Display and diagnostics requirements

• Hazardous area approval

For replacement projects, photos of the existing transmitter and impulse line or seal arrangement are especially helpful.

SIY Electric Supply Support

SIY Electric can help customers confirm model configuration of the differential pressure transmitter with diaphragm seal PDD300 based on existing model codes, datasheets or process conditions. We support quotation, equivalent model comparison, diaphragm seal selection review, and documentation for industrial measurement projects.

For project procurement or maintenance replacement, please send the model code, technical specification sheet, or photos of the existing transmitter nameplate.