Dc Sensors; Tacho - Adash VA4 Pro II User Manual

ADASH
Enter the name (or part of the name) and use the up/down arrows (use Shift button to change buttons function)
bearing selection. Confirm by OK.
user
If the required bearing is not contained in the database, then you can define the parameters manually.
none none bearing defined, the fault frequencies will not be displayed
Rotating Race for correct calculation of fault frequencies the selection of rotating race is required.

DC sensors

DC sensors are used for discrete current signals, e.g. temperature, pressure, ... .
After selection of DC1 - DC4 or All DC Channels item the sensor properties menu appears.
Sensitivity[mV/unit]
Offset[mV]
Unit
Position
measurement.
The used formula: output value in Unit = (input value in mV - Offset) / Sensitivity.

Tacho

The speed is measured from tacho channel. The signal contains one or more pulses per one rotation. The
pulses can also trigger the measurement.
The VA4 uses the falling edge of tacho signal for triggering (it means the end of the tacho mark).
For further technical and contact information visit
sensitivity value
offset value
unit selected from the list or user unit
the angle of sensor (see picture above). Usually used for proximity sensors and GAP
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Adash 4400 – VA4Pro