Address:East Room 306,3th Floor,1st Building,Shenhua Industrial Park,Meihua Road, Futian District,Shenzhen City
Tel:0755-32978297
Email:[email protected]
Figure 41: Calibration
With the ▲▼ keys the displayed value can be increased or decreased, until it amounts to 10.00 m/s². To save the setting press OK and exit the menu. By adjusting the transducer
sensitivity the instrument has now been calibrated. Check the calibration in the measuring mode. A vibration acceleration of 10.00 m/s² at 159.2 Hz corresponds
to a vibration speed of 10.00 mm/s s.
10. Sensor Check
The PCE-VM 25 input is designed for use with a low power IEPE accelerometer. These sensors are supplied by constant current, which produces a positive DC voltage potential at
the output. Due to this DC voltage an assessment can be made of the sensor‘s operating condition. The PCE-VM 25 detects three operational conditions:
< 0.1 V:
short circuit
0.1 – 11 V:
in working order
>11 V:
open input, e.g. broken cable
If a short circuit occurs or the input is open the instrument will display “SENSOR ERROR” instead of the measurand.
11. Headphone Output
Some maintenance technicians possess experience in the acoustic assessment of mechanical vibration on machines. For this purpose the PCE-VM 25 has a
headphone connection socket, which is also used for the USB connection. To connect a standard headphone set with a 3.5 mm phone jack to the 8 pin socket, use the
PCE-VM2x-HP
adapter cable which is included with the PCE-VM 25 (Figure 42).
Figure 41 Headphone cable PCE-VM2x-HP
To use the headphone connection open the main menu by pressing F3 and select “Headphone output”. Within this operation mode the volume can be adjusted using keys
◄►(Figure 44). Press F3 to finish using the headphon
Figure 43: Headphone menu
Figure 44: Volume control
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