Imagine a plant where pressure spikes cause costly shutdowns and safety alarms. The Siemens SITRANS P320 Gauge Pressure Transmitter is built to stop that from happening. It measures gauge pressure with high accuracy and sends the data to your control system. If you need reliable pressure monitoring in harsh environments, this device is the answer.
Siemens SITRANS P320 Gauge Pressure Transmitter
Many industrial processes suffer from unstable pressure readings that lead to waste and safety risks. Inconsistent data makes it hard to keep equipment running smoothly. The P320 solves this by offering precise gauge pressure measurement across a wide range, from a few millibar to 700 bar. It connects through HART, PROFIBUS PA or FOUNDATION Fieldbus, so you can integrate it into any existing network. The result is clear, reliable data that helps you keep production steady and safe.
Siemens SITRANS P320 is the first pressure transmitter on the market to feature remote safety handling. The instruments’ remote safety handling via SIMATIC PDM saves time during SIL commissioning: rather than manually attending to each individual device across a facility, operators can program transmitters from the control room. This reduces the commissioning time in applications requiring functional safety.
The devices are suited for applications where safety is critical: in industries such as chemical, oil and gas, and power generation.
Besides that both pressure transmitters have an increased proof test interval over other devices on the market, significantly lowering maintenance costs with testing periods of up to fifteen years rather than every two.
The reduced response time of the devices optimises the process efficiency by speeding up the control system’s response to changing application environments.
SITRANS P320’s user-friendly features also include a new larger and improved HMI display, showing users the device’s status at a glance. The setup is convenient and quick thanks to four-button programming, NAMUR NE107 support and a quick start wizard.
Key Features
- Full SIL-2/3 assessment
- Reduced commissioning time due to remote safety handling
- Suitable for harsh conditions due to robust materials
- User-friendly due to clear display and diagnostic icons acc. to NAMUR NE107
- Maintenance cost reduction due to proof test interval up to 15 years
- Fast reaction and optimised processes due to reduced response time
Specifications
| Model |
SITRANS P320 |
| Measured variable |
Gauge pressure |
| Communication |
HART (4–20 mA), PROFIBUS PA, FOUNDATION Fieldbus (FF) |
| Measuring cell filling |
Silicone oil, Inert liquid, Neobee oil |
| Maximum measuring span |
250 mbar; 1 000 mbar; 4 000 mbar; 16 bar; 63 bar; 160 bar; 400 bar; 700 bar |
| Measuring span (adjustable ranges) |
8.3–250 mbar; 0.01–1 bar; 0.04–4 bar; 0.16–16 bar; 0.63–63 bar; 1.6–160 bar; 4–400 bar; 7–700 bar |
| Max. permissible operating pressure (MAWP) |
Up to 800 bar depending on range |
| Output signal (HART) |
4–20 mA |
| Saturation limits |
3.55–22.8 mA (adjustable) |
| Damping |
0–100 s adjustable |
| Failure signal |
3.55–22.8 mA |
| Supply voltage |
10.5–45 V DC (10.5–30 V DC intrinsically safe) |
| Accuracy (reference) |
≤ ±0.075% (r ≤ 1.25); ≤ (0.008·r + 0.065)% (1.25 < r ≤ 30);
≤ (0.005·r + 0.05)% (5 < r ≤ 100) depending on range
|
| Step response time |
≤ 0.105 s |
| Medium temperature |
-40 to +100 °C (silicone/inert oil); -10 to +100 °C (FDA oil) |
| Ambient temperature |
-40 to +85 °C |
| Storage temperature |
-50 to +85 °C (FDA oil: -20 to +85 °C) |
| Degree of protection |
IP66 / IP68; NEMA 4X |
| Enclosure material |
Die-cast aluminum or Stainless steel (CF3M/1.4409) |
| Wetted parts material |
Stainless steel 316L; Alloy C22; Alloy C276; Gold-plated 316L |
| Process connections |
M20×1.5; G½; ½-14 NPT; Oval flange (7/16-20 UNF, M10, M12); Flush diaphragm |
| Electrical connections |
M20×1.5; ½-14 NPT; Han 7D / Han 8D; M12 |
| Local display |
Without display; With display (closed lid); With display (glass lid) |
| Functional safety |
SIL2 / SIL3 (IEC 61508) |
| Explosion protection |
ATEX, IECEx, CSA, FM, EACEx, INMETRO, KC, NEPSI, PESO, UKEX |
| Marine approvals |
DNV-GL; LR; BV; ABS; RMR; KR; RINA; CCS |
| Weight |
Approx. 1.8 kg (Aluminum); 3.8 kg (Stainless steel) |
