Important
When setting the power-on mode switch to “B”, remove all batter-
ies from the battery compartment. Otherwise the power-on mode
will not operate normally.
When using the supplied piezoelectric accelerometer PV-57I
Important
Make sure that the power of the unit is turn to off before connecting
or disconnecting the cable and accelerometer.
Make the connection with the supplied curled cable VP-51KI, as shown
in the illustration below.
3. Set the frequency range and display characteristics. The relationship
between measurement and accelerometer sensitivity, level range, and
frequency range is as shown in the table below.
In the ACC mode, when the supplied piezoelectric accelerometer
PV-57I is used, the measurement full-scale point can be set to a value
between 1 and 1000. Set the frequency range to a setting which suits
the measurement purpose.
Measurement
mode
Accelerometer
sensitivity
Measurement
range
Frequency range
ACC (m/s
2
)
0.1 to 0.99
10 to 10000
3 Hz to 1 kHz
3 Hz to 5 kHz
3 Hz to 20 kHz
1 Hz to 100 Hz
1.0 to 9.9
1 to 1000
10 to 99
0.1 to 100
VEL (mm/s)
0.1 to 0.99
100 to 10000
3 Hz to 1 kHz
10 Hz to 1 kHz
1.0 to 9.9
10 to 1000
10 to 99
1 to 100
DISP (mm)
0.1 to 0.99
1 to 1000
3 Hz to 500 Hz
10 Hz to 500 Hz
1.0 to 9.9
0.1 to 100
10 to 99
0.01 to 10
4. If the input signal overloads the circuitry of the VM-82A, the indication
OVER appears and the backlight will come on in red on the display.
Adjust the level range with the level range selector so that OVER does
not appear and the measurement value is easy to read.
Storing measurement data
Displayed measurement data can be stored in the internal memory. The
entire display contents except for the bar graph indication and the battery
status indication are stored, as listed below.
Date and time, Measurement range (full-scale value), Measurement
value, Measurement mode, Display characteristics, Frequency range,
Overload yes/no
1. When wishing to store the data in a specifi c address, use the numerical
setting keys to select the address. Then close the cover again.
Important
When data are stored in an address that already contains data, the
previous data will be overwritten.
2. Press the store key to store the currently displayed data. (It is also
possible to use the hold key to freeze the display and then perform the
store operation.)
3. When the store key is pressed, the display very briefl y turns off and
the data are stored. The store address is incremented by 1 count. If
the store address currently is 999 and the store key is pressed, the next
store address will be 000.
Setup
Setting mode
Each push of the MEAS/MODE key toggles between the measurement
mode (MEAS) and setting mode (MODE).
Setting the date/time and sensitivity
In the setting mode, the setting item selector [
] moves the current
setting item in the order Year
Month
Day
Hour
Minute
Piezoelectric accelerometer sensitivity
Year etc. The time is set and
displayed in 24-hour notation.
Curled cable VP-51KI
BNC connector
Input connector
Piezoelectric
accelerometer
PV-57I
Display screen
Date/time indication
Piezoelectric accelerometer
sensitivity indication
The currently fl ashing item can be changed. Use the numerical setting
keys [
] [
] to change the value. Pressing the [
] key increases the
value and pressing the [
] key decreases it. Keeping a key depressed for
2 seconds or more causes the value to change rapidly.
Setting the piezoelectric accelerometer sensitivity
Change the setting at the VM-82A so that it matches the sensitivity in-
dicated on the calibration chart of the used piezoelectric accelerometer.
Round the sensitivity up as necessary.
1. Cause the piezoelectric accelerometer sensitivity item to fl ash.
2. Use the numerical setting keys [
] [
] to change the value. Pressing
the [
] key increases the value and pressing the [
] key decreases
it. Keeping a key depressed for 2 seconds or more causes the value to
change rapidly. The display range is 0.10 to 99, with the resolution as
indicated below.
Display resolution
0.10 to 1.0
“0.01” steps
1.0 to 10
“0.1” steps
10 to 99
“1” steps
Measurement
Vibration measurement
1. Press the POWER key for over two seconds to turn the unit on.
2. Select the measurement mode with the measurement mode selector.
Full-scale value
Overload indication
Date and time
Measurement mode
Measurement value
Display characteristics
Store address
Frequency range
Recall mode indication
Stored items
Recall mode
When the recall key is pressed, the recall mode is activated. The indication
RECALL appears on the display and stored data are displayed. Pressing
the key again switches back to the measurement mode.
1. Press the recall key to activate the recall mode.
2. Use the numerical setting keys to select the address to be recalled.
Clearing stored data
If the unit is turned on while holding down the recall key on the front panel,
all stored data will be cleared. This process will take fi ve seconds or more
and the screen is turned off during the process. When it is completed, the
measurement screen appears.
All company names and product names mentioned in this concise manual are trade-
marks or registered trademarks of their respective owners.
RION CO., LTD.
3-20-41 Higashimotomachi, Kokubunji, Tokyo 185-8533, Japan
http://www.rion.co.jp/english/
No. 60260 15-02
