IFM VTV121 Vibration Transmitter

The IFM VTV121 is a high-sensitivity vibration transmitter built for ISO 10816-compliant machine condition monitoring. With a broad measurement range of 0–50 mm/s (RMS) and a frequency span of 10–1000 Hz, this rugged MEMS-based sensor delivers a reliable 4–20 mA analogue output for continuous vibration tracking. Engineered in 316L stainless steel and rated IP67/IP68/IP69K, the VTV121 is ideal for heavy-duty industrial environments where mechanical wear must be detected early to prevent downtime.

Technical Specifications

Model: VTV121
Manufacturer: IFM
Sensor Type: MEMS vibration transmitter
Measuring Principle: ISO 10816 (vibration velocity RMS)
Measuring Range: 0…50 mm/s RMS
Frequency Range: 10…1000 Hz
Measurement Axes: 1

Process Connection

• Mounting: Via supplied set screw
• Torque: 8 Nm
• Thread Type:
  • 1 × 1/4″-28 UNF / M8 × 1.25 mm (optional accessory)

Electrical Characteristics

• Operating Voltage: 9.6–32 V DC
• Protection Class: III (SELV)
• Sensor Technology: MEMS (microelectromechanical system)
• Electrical Connection: 1 × M12 connector (A-coded)

Output Configuration

• Total Outputs: 1
• Output Type: Analogue current (4–20 mA)
• Max Load Resistance: < (Ub – 9.6 V) × 50
  • Example: At 24 V → Max Load = 720 Ω
• Output Scaling: Linear to vibration velocity (RMS)

Accuracy & Deviation

• Measurement Error: < ±3% of final value
• Repeatability: < 0.5% of final value
• Linearity Deviation: 0.25%

Environmental Conditions

• Ambient Temperature: –30 to +125 °C
  • Note: UL-rated usage limited to < +70 °C
• Storage Temperature: –30 to +125 °C
• Protection Rating: IP67 / IP68 / IP69K
• Vibration Resistance: 20 g (10…3000 Hz) – EN 60068-2-6
• Shock Resistance:
  • 50 g for 11 ms – EN 60068-2-27
  • 500 g for 1 ms

Compliance & Certifications

• EMC Standards:
  • EN 61000-6-2 (Industrial immunity)
  • EN 61000-6-3 (Industrial emissions)
• MTTF (Mean Time To Failure): 868 years
• Application Standard: ISO 10816

Mechanical Design

• Weight: 124 g
• Material: 316L Stainless Steel (1.4404)
• Housing Type: Cylindrical transmitter
• Mounting Type: Set screw
• Tightening Torque: 8 Nm

Key Features & Benefits

✅ Extended Measurement Range: Up to 50 mm/s for broad application flexibility.

✅ Industry Standard Output: 4–20 mA analogue signal for seamless integration.

✅ Durable Housing: Built from corrosion-resistant stainless steel (316L).

✅ Robust Protection: IP69K rated for full washdown and dust protection.

✅ Extreme Shock Tolerance: Withstands up to 500 g shocks and 20 g vibrations.

✅ MEMS Precision: Reliable MEMS technology with long-term stability.

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