IFM PM1608 Flush Pressure Sensor – PM-,25BREA01-E-ZVG/US

The IFM PM1608 is a high-precision flush-mounted pressure sensor engineered for hygienic process applications such as those in the food and beverage industry. It delivers accurate relative pressure readings in low-pressure ranges (down to -12.5 mbar) and features a ceramic-capacitive measuring cell, scalable 4–20 mA analogue output, and IO-Link communication. With a robust stainless steel design, IP69K rating, and temperature resistance up to 150°C, this unit offers exceptional performance in viscous or particle-laden fluids.

Technical Specifications

Model: PM1608 Sensor
Manufacturer: IFM
Sensor Type: Relative Pressure Sensor
Mounting Type: Flush-mount
Measuring Range: –12.5…250 mbar | –0.0125…0.25 bar | –1.25…25 kPa | –0.182…3.626 psi

Process Connection

• G 1 external thread with sealing cone
• Ideal for sanitary installations in hygienic systems

PM1608 Electrical Characteristics

• Operating Voltage: 18…30 VDC
• Protection Class: III
• Insulation Resistance: ≥100 MΩ (500 VDC)
• Reverse Polarity Protection: Yes
• Measuring Principle: Hydrostatic
• Watchdog Function: Integrated
• Connection Type: M12 connector (gold-plated contacts)

2-Wire:

• Current Consumption: 3.5–21.5 mA
• Power-On Delay: 1 s

3-Wire:

• Current Consumption: < 45 mA
• Power-On Delay: 0.5 s

Output Configuration

• Total Outputs: 2 (1 digital, 1 analogue)
• Digital Output: IO-Link capable
• Analogue Output: 4–20 mA (scalable)
• Max Load (Analogue): 700 Ω @ 24 V (Ub – 9 V) / 21.5 mA
• Short-Circuit Protection: Yes
• Overload Protection: Yes

Measuring & Setting Ranges

• Full Scale Measuring Range:
  • –12.5 to 250 mbar
  • –0.0125 to 0.25 bar
  • –0.182 to 3.626 psi
  • –1.25 to 25 kPa
• Analogue Start Point (ASP):
  • –12.5 to 200 mbar
• Analogue End Point (AEP):
  • 37.5 to 250 mbar
• Resolution / Steps:
  • 0.1 mbar | 0.002 psi | 0.01 kPa
• Factory Settings:
  • ASP = 0.0 bar
  • AEP = 250 mbar

PM1608 Accuracy & Deviations

• Repeatability: < ±0.1% of span (ΔT < 10 K)
• Characteristics Deviation: < ±0.2% (includes linearity, hysteresis, repeatability)
• Linearity Deviation: < ±0.15% of span
• Hysteresis Deviation: < ±0.15% of span
• Long-Term Stability: < ±0.1% of span per year
• Temp. Deviation Characteristics:
  • –25…15 °C: ±0.1% of span / 10 K
  • 80…150 °C: ±0.15% of span / 10 K

Response Times

• Step Response (2-Wire): 30 ms
• Step Response (3-Wire): 7 ms
• Damping (Analogue): 0…4 s

IO-Link Communication

• Version: IO-Link v1.1
• Transmission Type: COM2 (38.4 kBaud)
• SDCI Standard: IEC 61131-9
• Supported Profiles:
  • Digital Measuring Sensor (0x000A)
  • Identification and Diagnosis (0x4000)
• SIO Mode: Not supported
• Required Master Port: Type A
• Analogue Process Data: 3
• Min. Cycle Time: 3.2 ms
• Pressure Resolution via IO-Link: 0.05 mbar

Environmental Conditions

• Medium Temperature: –25 to +150 °C
• Ambient Temperature: –25 to +80 °C
• Storage Temperature: –40 to +100 °C
• IP Rating: IP67 / IP68 / IP69K
• Vacuum Resistance: –1000 mbar
• Burst Pressure: 30,000 mbar | 435 psi | 3000 kPa
• Pressure Rating: 6000 mbar | 84 psi | 600 kPa
• MAWP (CRN): 10 bar
• Dead Space-Free: Yes

Mechanical Design

• Weight: 304.8 g
• Dimensions: Ø 30.2 mm × 122 mm
• Housing: Stainless steel (316L/1.4404) + PBT
• Wetted Materials:
  • Ceramics (99.9% Al₂O₃)
  • Stainless steel (316L/1.4435)
  • PTFE
  • Ra < 0.4 / Rz 4 surface finish
• Pressure Cycle Durability: 100 million
• Tightening Torque: 20 Nm

Display & Interface

• Display: Not specified – IO-Link dependent

Key Features & Benefits:

✅ Ultra-Low Pressure Measurement: Ideal for sensitive food & beverage processes.

✅ Flush Mountable Design: Prevents buildup and dead space.

✅ Temperature-Resistant: Handles up to 150°C media for SIP applications.

✅ Hygienic Construction: Smooth wetted surfaces, suitable for CIP/SIP.

✅ IO-Link Ready: Enables remote monitoring, diagnostics, and fast integration.

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