1. Product Overview
The VTSYIQI 3D Vibration Meter VOM-7698 is a portable instrument designed for precise measurement of vibration in machinery. It utilizes a piezoelectric transducer to measure three parameters: acceleration, velocity, and displacement, across three axes (X, Y, Z). This device is suitable for periodic measurements to detect mechanical faults such as imbalance and misalignment in rotating equipment, aiding in quality control, commissioning, and predictive maintenance.
Key features include:
- Simultaneous display of three parameters (velocity, acceleration, displacement) in one view.
- 3-dimensional or 1-dimensional measurement capability.
- Compliance with ISO 2954 standards for vibration measurement.
- High-quality piezoelectric accelerometer for accurate and repeatable results.
- Wide frequency range for various measurement needs.
- Bearing condition monitoring function.
- USB/RS-232 data output for PC connectivity and data analysis.

Figure 1: Front view of the VTSYIQI 3D Vibration Meter VOM-7698, showing the display and control buttons.
2. Package Contents
Please verify that all items listed below are present in your package:
- VTSYIQI 3D Vibration Meter (Main Unit)
- 3D Piezoelectric Accelerometer Sensor with Cable
- USB Data Cable
- Software (USB Drive)
- Instruction and Maintenance Manual
- Measurement Probes (pointed and flat types)
- Carrying Case

Figure 2: All components included in the VTSYIQI 3D Vibration Meter VOM-7698 package, neatly arranged in their carrying case.
Video 1: An unboxing and display video of the VTSYIQI 3D Vibration Meter, showcasing the main unit, sensor, cables, and accessories included in the package.
3. Setup
3.1 Battery Installation
- Locate the battery compartment on the back of the main unit.
- Open the battery compartment cover.
- Insert two (2) AA 1.5V batteries, ensuring correct polarity as indicated inside the compartment.
- Close the battery compartment cover securely.

Figure 3: Rear view of the VTSYIQI 3D Vibration Meter, highlighting the battery compartment and polarity markings.
3.2 Sensor Connection
- Identify the sensor input port on the top of the main unit.
- Connect the cable from the 3D piezoelectric accelerometer sensor to this port. Ensure a firm and secure connection.
- For specific measurement applications, attach the appropriate measurement probe (pointed or flat) to the sensor head.

Figure 4: Close-up view of the 3D Piezoelectric Accelerometer Sensor, showing its connection point and axis indicators.
3.3 PC Connection (Optional)
To transfer data to a computer, use the provided USB data cable:
- Connect one end of the USB data cable to the data output port on the meter (typically labeled RS-232 or USB).
- Connect the other end of the USB data cable to an available USB port on your computer.
- Install the provided software from the USB drive onto your computer to enable data communication and analysis.

Figure 5: Top view of the VTSYIQI 3D Vibration Meter, illustrating the sensor input and data output (RS-232) ports.
4. Operation
4.1 Power On/Off
- Press the red power button to turn the device on.
- Press and hold the red power button again to turn the device off.
4.2 Measurement Modes and Unit Selection
- Press the A/V/D button to cycle through Acceleration, Velocity, and Displacement measurement modes. The active mode will be displayed on the screen.
- Press the UNIT button to change the measurement units (e.g., m/s², ft/s², g for acceleration; mm/s, inch/s for velocity; mm, mil for displacement).
4.3 Axis Selection
- Press the X/Y/Z / XYZ button to switch between single-axis (X, Y, or Z) and three-axis (XYZ) measurement display. In XYZ mode, the device will show readings for all three axes simultaneously.
4.4 Data Hold
- During measurement, press the HOLD button to freeze the current readings on the display.
- Press the HOLD button again to release the hold and resume live measurement.
4.5 Volume Control (Optional)
- If using optional headphones as an electronic stethoscope, use the VOL. button to adjust the audio output level.

Figure 6: The meter's display showing various measurement parameters and units, illustrating its 'Portable 3D Vibration Analyzer' capabilities.
5. Maintenance
- Cleaning: Wipe the device and sensor with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the meter and its accessories in the provided carrying case in a cool, dry place when not in use.
- Battery Replacement: Replace batteries promptly when the low battery indicator appears on the display to ensure accurate readings and prevent data loss. Remove batteries if the device will not be used for an extended period.
- Sensor Care: Handle the piezoelectric sensor with care. Avoid dropping it or subjecting it to excessive force, as this can affect its calibration and accuracy.
6. Troubleshooting
6.1 Device Does Not Power On
- Check if the batteries are correctly installed with the proper polarity.
- Replace the batteries with new AA 1.5V batteries.
6.2 Inaccurate Readings
- Ensure the sensor is securely connected to the main unit.
- Verify that the sensor is properly attached to the object being measured.
- Check for any visible damage to the sensor or its cable.
- Ensure the measurement mode (Acceleration, Velocity, Displacement) and units are correctly selected for your application.
6.3 Data Transfer Issues
- Confirm the USB data cable is securely connected to both the meter and the computer.
- Ensure the data transfer software is correctly installed on your computer.
- Check your computer's device manager to see if the meter is recognized.
7. Specifications
| Parameter | Value |
|---|---|
| Sensor | Piezoelectric Transducer |
| Accuracy | ±5% of Reading + 2 digits |
| Operating Temperature | 0°C to 50°C (32°F to 122°F) |
| Operating Humidity | <90% RH |
| Measuring Range - Acceleration | 0.1~400 m/s² (0.3~1312 ft/s², 0.0~40 g Equivalent Peak) |
| Measuring Range - Velocity | 0.01~400 mm/s (0.004~16.0 inch/s True RMS) |
| Measuring Range - Displacement | 0.001~4.0 mm (0.04~160.0 mil Equivalent Peak-peak) |
| Frequency Range - Acceleration | 10 Hz ~ 10 kHz |
| Frequency Range - Velocity | 10 Hz ~ 1 kHz |
| Frequency Range - Displacement | 10 Hz ~ 1 kHz |
| Power Supply | 2x AA 1.5V Batteries |
| Data Output | USB / RS-232 |
| Item Weight | 4.4 pounds (approx.) |
| Package Dimensions | 11.81 x 7.87 x 3.94 inches (approx.) |
| Material | Plastic |
| Color | Black |



