The Velocity Option 9155D-600 of the 9155D Calibration System 
enables the calibration and verification of velocity sensors, such 
as moving coil type. The 9155D-650 option adds hardware and 
software to calibrate 4-20 mA current loop sensors. 9155D-600 
option is included with 9155D-650.

The reference vibration measurement is measured with a typical 
quartz ICP® reference accelerometer. The reference accelerometer 
output is converted to velocity for comparison against the SUT 
(Sensor Under Test) measurement.

9155 customers who use the software with accelerometers will find 
that the velocity sensor interface will be identical. It has the same 
experience starting at sensor setup, through data acquisition, and 
finally report generation.

The 9155D-600 and 9155D-650 options add velocity and 
4-20 mA current loop to the list of supported SUT types for 9155: 
high frequency vibration acceleration, low frequency (0.1 Hz) 
vibration acceleration, shock acceleration, dynamic pressure, 
acoustic microphones, and visual output (vibration meters). 
These calibrations are all performed according to appropriate 
international standards defined by ISO, IEC, and ANSI. Also, 
reports are automatically generated that fulfill the requirements 
of ISO 17025.