CEMB USA N500 - Manual (Page 22)

4 - 2 Setup mode
N.B.
Although the required unit of measurement can differ from the natural one of the
sensor, these are the only combinations are possible.
TYPE OF SENSOR REQUIRED MEASUREMENT
ACCEL acceleration, speed, displacement
VELOC speed, displacement
DISPLC displacement
N.B.
The N500 instrument is able to determine automatically whether there is no sensor
connected to an enabled channel (i.e. not set to OFF Sensors Setup) and it signals
this by showing the symbol
in the vicinity of the signal bar of the
corresponding channel (only during measurement).
To avoid displaying this symbol, it is advisable to disable the channel when not
used, by setting to OFF.
Caution:
The appearance of this symbol for a channel where a sensor is really connected,
could indicate a possible malfunction of the sensor or else a problem in connection
(e.g. the cable could have been sheared).
In such case it is advisable to carry out a few tests by connecting a sensor (which is
known to be operating properly) to the channel in question; if the indication
persists, contact CEMB Technical Service.
2. Sensitivity of the sensor
This is the number of volts per unit produced by the sensor: it is expressed for the various
types in:
TYPE OF SENSOR SENSITIVITY TYPICAL VALUE
ACCEL mV/g 100
VELOC mV/(mm/s) 21.2
DISPLC mV/
µm 0,25
Caution:
Different models can have sensitivity differing from the typical values; pay attention
when taking the correct value from the sensor documentation and preset it .