Doc.Ref.No.:mVMT/om/101
masibus
Issue No. :00
Model : VM908
Operator’s Manual VM-908 Vibration meter
Page 5 of 11
02/05/16
2). Check the voltage of the battery:
a.
Press <Measure> key, observe the display on the screen. If there is an arrow on the top left
corner, you need to replace the battery with a new one.
3). Set-up probe
a.
VM-908 Standard has two probes while outside sensor has 1 probe and 1 magnetic mount.
When changing, take hold of the screw cover to avoid rotation and damage of the sensor.
The VM-908 utilizes an external accelerometer and magnetic base to improve frequency response and
provide a more repeatable vibration reading.
4.
Measurement
1). Select the measure parameters:
VM-908 has 4 vibration parameters. They are:
a.
Displacement (unit: μm = 1/1000 mm): Equivalent peak-peak value
b.
Velocity (unit: mm/s): True RMS Value;
c.
Acceleration (unit: m/s
2
): Equivalent peak
d.
High Frequency Acceleration (unit: m/s
2
): Equivalent peak
2). Functions of the <Measure> key:
Press the key and on the power and begin measuring after releasing the key it holds the measured
value for twenty seconds and then the power is turned off
a.
Key press: Power on and begin measuring;
