DatasheetSiemens SITRANS P300 Pressure Transmitter
The Siemens SITRANS P300 is a digital pressure transmitter for applications in the food, pharmaceutical and biotechnology industries. It is suitable for precise measurement of relative and absolute pressure and is especially designed for processes that require hygienic process connections, high-quality materials and reliable signal transmission.
Common threaded process connections as well as flush-mounted versions are available. The flush-mounted variants are particularly suitable for food and pharmaceutical applications, as they support good cleanability and hygienic integration into the process. Depending on the version, communication is provided via an impressed 4 … 20 mA DC signal, HART, PROFIBUS PA or FOUNDATION Fieldbus.
Key benefits
- Digital pressure measurement for hygienic and demanding process applications
- Available for relative pressure and absolute pressure
- Flush-mounted process connections for hygienic applications
- High quality and long service life
- High reliability even under extreme chemical and mechanical loads
- Comprehensive diagnostic and simulation functions
- Minimum characteristic deviation and low long-term drift
- High measuring accuracy
- Wetted parts made of high-quality materials such as stainless steel or Hastelloy
- Parameterization via push buttons, HART, PROFIBUS PA or FOUNDATION Fieldbus
Typical applications
The SITRANS P300 is used wherever pressure must be measured reliably and integrated hygienically into the process. The combination of digital electronics, flush-mounted process connections and high-quality materials makes the device particularly suitable for sensitive production environments.
- Food and beverage industry
- Pharmaceutical production
- Biotechnology processes
- Hygienic pipelines and vessels
- Processes with aggressive or non-aggressive media
- Applications with hazardous gases, vapours or liquids
- Measuring points with digital communication via HART, PROFIBUS PA or FOUNDATION Fieldbus
Measuring modes and versions
The pressure transmitter is available in versions for relative pressure and absolute pressure. With appropriate parameterization, it can also be used for additional measuring tasks such as level, volume or mass.
| Measuring mode | Description | Measuring span |
|---|---|---|
| Relative pressure | Measurement of relative pressure of aggressive, non-aggressive and hazardous gases, vapours and liquids. | Smallest measuring span 0.01 bar; largest measuring span 400 bar |
| Absolute pressure | Measurement of absolute pressure of aggressive, non-aggressive and hazardous gases, vapours and liquids. | Smallest measuring span 0.008 bar; largest measuring span 30 bar |
| Level | Can be used for level measurement with suitable parameterization. | Depending on version and process conditions |
| Volume | Can also be used for volume-related measuring tasks with suitable parameterization. | Depending on parameterization and application |
| Mass | Can be used for mass-related measuring tasks with suitable parameterization. | Depending on parameterization and application |
Device design
The SITRANS P300 consists of electronics, a robust housing and a measuring cell. The housing has a removable cover. Depending on the version, an inspection window for displaying the measured value can be integrated. The push buttons for local operation are located below the display and allow convenient parameterization directly on site.
The terminal compartment contains the connections for auxiliary power and shielding. The cable gland is mounted on the side of the housing. The measuring cell with the process connection is located on the underside of the housing. Depending on the device version, the measuring cell may visually differ from the illustrated example.
Operation and communication
The SITRANS P300 can be conveniently parameterized via three push buttons directly on the device. Depending on the version, digital communication options via HART, PROFIBUS PA or FOUNDATION Fieldbus are available. This allows the pressure transmitter to be configured either locally or through higher-level control systems and engineering tools.
Explosion protection and safety
The SITRANS P300 is approved for the type of protection intrinsic safety. With the appropriate version, it can be used in hazardous areas. The devices have an EC-type examination certificate and comply with the relevant harmonized European ATEX standards. Use in Zone 1 or Zone 0 is possible provided that the applicable approval and installation requirements are observed.
Technical overview
| Product | Siemens SITRANS P300 |
|---|---|
| Device type | Digital pressure transmitter for food, pharmaceutical and biotechnology applications |
| Measured variables | Relative pressure and absolute pressure; with parameterization also level, volume and mass |
| Suitable media | Aggressive, non-aggressive and hazardous gases, vapours and liquids |
| Relative pressure measuring span | 0.01 bar to 400 bar |
| Absolute pressure measuring span | 0.008 bar to 30 bar |
| Output signal | 4 … 20 mA or digital communication via PROFIBUS PA or FOUNDATION Fieldbus |
| Communication | HART, PROFIBUS PA or FOUNDATION Fieldbus |
| Operation | Parameterization via three push buttons directly on site |
| Housing | Single-chamber stainless steel housing |
| Device design | Electronics, housing and measuring cell |
| Process connections | Common threaded versions and flush-mounted versions |
| Hygienic suitability | Flush-mounted versions available for food and pharmaceutical applications |
| Wetted parts | High-quality materials, e.g. stainless steel or Hastelloy |
| Diagnostics | Comprehensive diagnostic and simulation functions |
| Explosion protection | Intrinsic safety, suitable for Zone 1 or Zone 0 with appropriate approval |
| Special features | High measuring accuracy, low long-term drift, minimum characteristic deviation, robust hygienic design |
Practical benefit
The SITRANS P300 is a suitable solution for hygienic pressure measuring points where robust construction, digital communication and high measuring quality are required. Especially in food, pharmaceutical and biotech processes, the device offers a strong combination of hygienic process integration, reliable pressure measurement and convenient operation.
