Extech VB400 – Vibration Meter – Tachometer Capability: No, Peak/Hold: Yes,

• Data Hold freezes the reading in the display
• Water and dust resistant to IP65
• Basic accuracy of ±(5% + 2 digits)
• Zero adjustment
• Low battery indicator

Measures RMS Acceleration and Velocity

The VB400 is designed to provide easy and accurate velocity and acceleration measurements on industrial machinery. Measurement ranges including Acceleration (RMS): 656ft/s2; 20.39g; 200m/s2; and Velocity (RMS): 7. 87in/s; 2.00cm/s; 200mm/s. Wide frequency range from 10Hz to 1kHz. Lt has resolutions of 1ft/s2; 0.01g; 0.1m/s2 and 0.02in/s; 0.01cm/s; 0.1mm/s. Basic accuracy of ±(5% + 2 digits).

The VB400 is designed to provide easy and accurate velocity and acceleration measurements on industrial machinery.

Applications:

• Motors bearings
• Fans
• Pumps
• Rotating machinery
• Plant maintenance

1. Display

2. Power Button

3. Hold Button

4. Function Button

5. Battery Cover/Compartment

6. Vibration Sensor

7. Sensing Head

8. Magnetic Baset

Preparation for measurements

1. Press the POWER button to turn the meter on.

2. Check that the display is on and that the low battery icon is not on.

3. If the low battery icon appears, replace the batteries.

4. Attach either the sensing head or the magnetic base by screwing it into the vibration sensor.

Measurements

1. Press the MODE button to step through and set the function (velocity or acceleration) and the units desired.

2. For non-ferrous surfaces, gently hold the meter (as shown) with the sensing head against the vibrating surface.

3. For ferrous surfaces, attach the meter to the surface with the magnetic mount.

4. The meter must be held perpendicular to the surface to maintain measurement accuracy

5. Read the measured value in the display.