DP Flow Meters

The Siemens SITRANS P320 is the first differential 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.


    • Reduced commissioning time due to remote safety handling
    • Suitable for harsh conditions due to robust materials
    • User-friendly due to a clear and large display and diagnostic icons acc. to NAMUR NE107 and a quick start wizard
    • Maintenance cost reduction due to proof test interval up to 15 years
    • Fast reaction and optimized processes due to reduced response time

Technical Specification:

Technology, sensor: Differential pressure and flow PN160
Communication: HART (4…20 mA)
Measuring cell filling: Silicone oil
Maximum measuring span: 60 mbar (24.11 inH²O)
Process Connection: Oval flange, fastening thread: 7/16-20 UNF (IEC 61518) with lateral venting
Wetted parts: Diaphragm: Stainless steel 316L/1.4404, measuring cell: Stainless steel 316L/1.4404; Sensor Differential pressure: process flange: Stainless steel 316/1.4408
Non-wetted parts materials: Die-cast aluminum housing
Enclosure: Dual chamber device
Type of protection: Intrinsic safety
Electrical connections / cable entries: 2 x M20 x 1.5
Local operation/display: With display (lid with glass window)
Device options: Ex plate made of stainless steel 1.4404/316L
Explosion protection approvals: IECEx (World)

Mounting Bracket: stainless steel 1.4301/304 (World)

Accuracy: 0,065 % (SITRANS P320), 0,04 % (SITRANS P420)
Response time: down to 105 ms
Long-Term Stability: ≤ 0.125 % / 5 years
Net Weight (kg): 5.000 Kg