PI2797 IFM Pressure Sensor – PI-001BREA01-MFRKG-USP

The IFM PI2797 is a flush-mount pressure sensor built for the food, beverage, and hygienic process industries, offering superior accuracy, clean-in-place compatibility, and support for both 2-wire and 3-wire configurations.

With a hydrostatic measuring principle, wide temperature tolerance up to 145°C, and IO-Link integration, this sensor is ideal for handling viscous, particle-laden, and gaseous media under demanding conditions.

Technical Specifications

Model: PI2797
Manufacturer: IFM
Product Series: PI Series
Sensor Type: Relative pressure sensor
Measuring Range: –0.05…1 bar | –50…1000 mbar | –0.73…14.5 psi | –5…100 kPa

Process Connection

• G 1″ external thread (Aseptoflex Vario)
• No dead space design for hygienic applications

Electrical Characteristics

• Protection Class: III
• Insulation Resistance: ≥100 MΩ (500 VDC)
• Reverse Polarity Protection: Yes
• Measuring Principle: Hydrostatic
• Integrated Watchdog: Yes
• Electrical Connection: 1 × M12 connector (gold-plated contacts)

2-Wire Configuration

• Operating Voltage: 20–32 VDC
• Current Consumption: 3.6–21 mA
• Power-On Delay: 1 s
• Max. Load: 300 Ω
• Analogue Output: 4–20 mA

3-Wire Configuration

• Operating Voltage: 18–32 VDC
• Current Consumption: < 45 mA
• Power-On Delay: 0.5 s
• Voltage Drop (DC): ≤2 V
• Switching Output Current Rating: 250 mA
• Switching Frequency: < 125 Hz
• Max. Load (Analogue): (Ub – 10 V) / 20 mA

Output Configuration

• Digital Outputs: 2
• Analogue Outputs: 1
• Output Signal: Switching / Analogue / IO-Link (configurable)
• Output Function: NO/NC (parameterisable)
• Analogue Output: 4–20 mA (invertible & scalable)
• Short-Circuit / Overload Protection: Yes (pulsed)

Accuracy & Repeatability

• Switch Point Accuracy: < ±0.2% of span (Turn down 1:1)
• Repeatability: < ±0.1% of span (ΔT < 10 K)
• Characteristics Deviation: < ±0.2% (linearity, hysteresis, repeatability)
• Long-Term Stability: < ±0.1% of span per year
• Temperature Coefficient (Zero Point): < ±0.05% / 10 K (0–70°C)

Response Times

• Damping (Process Value): 0–30 s
• Damping (Analogue Output): 0.01–99.99 s

2-Wire

• Step Response (Analogue): 45 ms

3-Wire

• Switching Response: 3 ms
• Step Response (Analogue): 7 ms

Measuring & Setting Ranges

• Measuring Range:
  • –0.05…1 bar
  • –50…1000 mbar
  • –0.73…14.5 psi
  • –5…100 kPa
• Set Point (SP):
• • –48…1000 mbar | –0.7…14.5 psi | –4.8…100 kPa
• Reset Point (RP):
  • –50…998 mbar | –0.73…14.47 psi | –5…99.8 kPa
• Factory Settings:
  • SP1 = 250 mbar
  • RP1 = 230 mbar
  • SP2 = 750 mbar
  • RP2 = 730 mbar
  • ASP = 0 mbar
  • AEP = 1000 mbar
  • dAP = 0.06 s
  • dAA = 0.03 s

IO-Link Communication

• Interface Type: IO-Link v1.0
• Process Data: 1 analogue, 2 binary
• Min. Cycle Time: 2.3 ms
• SDCI Standard: IEC 61131-9
• Profiles: Not defined

Environmental Conditions

• Ambient Temperature: –25 to +80°C
• Storage Temperature: –40 to +100°C
• Medium Temperature: –25 to +125°C (max. 145°C for 1 hour)
• Enclosure Rating: IP67 / IP68 / IP69K
• Vacuum Resistance: –1000 mbar
• MAWP (CRN Applications): 10 bar

Mechanical Design

• Weight: 356 g
• Dimensions: Ø 50 mm × 105.8 mm
• Housing Materials: Stainless steel (316L), FKM, PTFE, PBT, PEI, PFA
• Wetted Parts: Ceramics (99.9% Al₂O₃), Stainless steel (316L), PTFE

Display & Diagnostics

• Display Type: Alphanumeric 4-digit
• Display Units: mbar, kPa, psi, inH₂O, mWS, % of span

Key Features & Benefits:

✅ Flush-Mount Design for Hygienic Systems: Suitable for viscous or particle-filled media in CIP/SIP processes.

✅ Dual Output & IO-Link Support: Seamlessly integrates switching and analogue signals with modern IO platforms.

✅ Ultra-Precise Readings: ±0.2% accuracy with high repeatability and scalable output.

✅ Versatile 2-Wire or 3-Wire Modes: Supports a wide range of process control configurations.

✅ Durable IP69K Housing: Built to withstand high-pressure washdowns and harsh environments.

✅ Wide Temperature Range: Operates up to 145°C for sterilisation applications.

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