IFM SI5004 Flow Sensor – SID10ADB10OG

The IFM SI5004 is a rugged inline thermal flow sensor engineered for precise monitoring of liquid flow rates in a wide range of industrial applications. It supports analogue current output (4–20 mA) and operates across a flow range of 3–300 cm/s, ideal for applications involving water and similar fluids. The M18 x 1.5 internal thread, 45 mm probe, and 316L stainless steel construction provide a compact yet durable solution. Rated to 300 bar, and built with IP67 protection, the SI5004 excels in pressurised and harsh environments.

Technical Specifications

Model: SI5004
Manufacturer: IFM
Sensor Type: Thermal flow sensor
Measuring Principle: Calorimetric
Media Compatibility: Liquids
Flow Measuring Range: 3…300 cm/s
Greatest Sensitivity: 3…100 cm/s (water at 25 °C)
Installation Length: 45 mm
Process Connection: M18 × 1.5 internal thread

Electrical Characteristics

• Operating Voltage: 19–36 V DC
• Current Consumption: < 60 mA
• Protection Class: III
• Reverse Polarity Protection: Yes
• Power-On Delay: 10 s
• Electrical Connection: 1 × M12 connector (A-coded)

Output Configuration

• Total Outputs: 1
• Output Type: Analogue signal (4–20 mA)
• Max Load Resistance: 500 Ω
• Overload Protection: Yes

Accuracy & Repeatability

• Repeatability: 1…5 cm/s (for water, 5…100 cm/s @ 25 °C)
• Measuring Error: ±2…10% of full scale
• Temperature Drift: 0.1 cm/s × 1/K (water @ 10…70 °C)

Response Times

• Response Time: 1…10 s

Environmental Conditions

• Ambient Temperature: –25 to +80 °C
• Storage Temperature: –25 to +100 °C
• Media Temperature: –25 to +80 °C
• Protection Rating: IP67
• Pressure Rating:
  • 300 bar | 30 MPa
  • MAWP (CRN): 208 bar

Compliance & Certifications

• EMC:
  • DIN EN 61000-6-2
  • DIN EN 61000-6-3
• Shock Resistance: 50 g (11 ms) – DIN EN 60068-2-27
• Vibration Resistance: 20 g (55…2000 Hz) – DIN EN 60068-2-6
• MTTF: 259 years

Mechanical Design

• Weight: 230 g
• Dimensions: Ø 50 mm × 113 mm
• Housing Type: Cylindrical
• Housing Materials:
  • Stainless Steel (316L / 1.4404), Stainless Steel (304 / 1.4301), PC, PBT-GF20, EPDM/X
• Wetted Materials:
  • Stainless Steel (316L / 1.4404), FKM O-ring (80 Shore A)
• Probe Diameter: 8.2 mm

Display & Interface

• Display:
  • 10 × Tri-color LEDs
  • Visual feedback for operating state and signal strength

Key Features & Benefits

✅ Flow Rate Range from 3 to 300 cm/s: Suitable for a broad variety of fluid applications.

✅ 4–20 mA Analogue Output: Simple integration into control systems.

✅ 300 Bar Pressure Tolerance: Built for robust hydraulic and process applications.

✅ 316L Stainless Steel Construction: Ensures long service life and compatibility with aggressive media.

✅ Wide Temperature Tolerance: Operates safely from –25 to +80 °C.

✅ Compact, Durable Design: Ideal for confined spaces and OEM use.

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