The compact Uni-T UT311A vibration tester is designed for quick monitoring of machine condition – it measures acceleration, velocity, and vibration displacement and clearly displays the values on a 2.4" TFT display. With two acceleration frequency modes (LO/HI), automatic screen rotation, a built-in flashlight, and USB‑C charging, it is suitable for on-site inspections as well as routine industrial diagnostics.
Uni-T UT311A is a practical tool for service and maintenance that helps quickly assess the operating condition of equipment based on vibration. It offers three measurement methods – acceleration (PEAK), velocity (RMS), and displacement (P‑P) – so you can easily choose the mode according to the machine type and vibration characteristics.
For more accurate analysis, a dedicated acceleration frequency range is available in two modes (LO/HI), making it easier to evaluate both slower and high-frequency vibrations. The Data Hold function lets you freeze the measured value on the display so it remains readable even in hard-to-reach places.
For field work, you will appreciate the automatically rotating and backlit TFT display, a flashlight for measurements at dusk, and automatic power-off after 5 minutes to save energy. The rechargeable battery (1350 mAh) provides approximately 12 hours of operation and charges via USB‑C in about 3 hours.
Package contents:
- Uni-T UT311A vibration tester
- Long measuring probe
- Short measuring probe
- USB‑C charging cable
- User manual
- Safety instructions
Specifications
- Manufacturer
- Uni-T
- Model
- UT311A
- Acceleration measurement
- 0.1–199.9 m/s²
- Velocity measurement
- 0.1–199.9 mm/s
- Displacement measurement
- 0.001–1.999 mm
- Acceleration frequency range
- LO 10 Hz–1 kHz / HI 1 kHz–15 kHz
- Velocity frequency range
- 10 Hz–1.5 kHz
- Displacement frequency range
- 10 Hz–1 kHz
- Resolution
- 0.1 m/s² / 0.1 mm/s / 0.001 mm
- Acceleration and velocity accuracy
- ±(5% + 2 digits)
- Displacement accuracy
- ±(10% + 2 digits)
- Display
- 2.4" TFT LCD, automatic rotation, backlight
- Functions
- Data hold, flashlight, battery indicator, auto power-off after 5 min
- Power supply
- 1350 mAh Li-Ion battery, 3.7 V
- Charging
- USB-C, DC 5 V
- Operating time
- approx. 12 h
- Operating conditions
- 0 °C–40 °C, ≤80% RH (non-condensing)
- Dimensions
- 180 × 28 × 64 mm (with short probe)
- Weight
- 191 g (with short probe)
