Gauge pressure transmitter with diaphragm seal PGD300

Typical Applications of PGD300 Gauge Pressure Transmitter with Diaphragm Seal

PGD300 is suitable for gauge pressure measurement where the process medium should not directly contact the transmitter sensor. With the S26 diaphragm seal, it can be used for pressure and open tank level measurement in applications involving corrosive, viscous, hot, contaminated or high-purity process media.

Typical applications include:

• Gauge pressure measurement for liquid, gas and steam
• Open tank level measurement with diaphragm seal protection
• Chemical and petrochemical process pressure monitoring
• Pressure measurement for aggressive or contaminated media
• Applications requiring ASME / EN diaphragm seal connections
• Hydrogen-related service where material selection and permeation resistance are important
• Measurement points where wired installation is difficult, if WirelessHART is selected

Why S26 Diaphragm Seal Design Matters

The S26 diaphragm seal allows the PGD300 to work in more demanding process conditions than a standard direct-mounted transmitter. The diaphragm isolates the transmitter from the process medium while transferring pressure to the sensor through fill fluid.

For applications involving corrosion, crystallization, high temperature or media that may clog impulse lines, the diaphragm seal design can help improve long-term reliability. The ABB all-welded construction is also useful where leakage risk must be reduced and process compatibility is important.

When selecting a PGD300 configuration, the diaphragm material, seal type, process connection, fill fluid and operating temperature should be checked carefully. These details directly affect accuracy, response time, stability and service life.

Selection Information Required for Quotation

To confirm the correct PGD300 configuration or prepare a quotation, please provide the following information:

• Existing model code or nameplate photo
• Measured medium
• Pressure range
• Process temperature
• Process connection standard, size and rating
• Diaphragm seal type
• Diaphragm material requirement
• Fill fluid requirement
• Whether hydrogen service or special corrosion resistance is required
• Output signal or communication protocol
• Display, Bluetooth, WirelessHART or Modbus requirement
• Hazardous area approval requirement
• SIL requirement, if applicable

If the transmitter is used for open tank level measurement, please also provide the tank height, liquid density, installation position and whether the tank is vented to atmosphere.

SIY Electric Supply Support

SIY Electric can help customers confirm PGD300 configuration based on existing model codes, datasheets, nameplate photos or process conditions. We can support quotation, replacement selection, equivalent model comparison and diaphragm seal configuration review for pressure and open tank level measurement projects.

For procurement or maintenance replacement, please send us the model code, technical specification sheet or photos of the existing transmitter nameplate. This helps us check the pressure range, S26 diaphragm seal configuration, material, fill fluid, output protocol, approval and documentation requirements more accurately.