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Rion Vibration Level Meter VM-55

Vibration Level Meter compliant with the Japan Measurement Act and JIS C 1510: 1995 and JIS C 1517: 2014.

The Vibration Level Meter VM-55 is compliant with JIS C 1510 : 1995 and JIS C 1517 : 2014.
The unit is equipped to measure the instantaneous value for vibration level and vibration acceleration level, as well as the time percentile level, time averaged level, maximum and minimum values in three axes simultaneously.

Vibration Level Meter

Model:

VM-55

Maker:

RION CO.,LTD.

Features

  • Simultaneous measurement of Lv and Lva
  • Extended function program cards
  • 27 hours of measurement with IEC R6(size AA)
  • Dust and water proofing IP54

Specifications

 

Type Approval Number No. TW161
Applicable standards Weight and Measure Act (Vibration Level Meters) JIS C 1510:1995, JIS C 1517:2014
CE marking, WEEE Directive, Chinese RoHS (export model for China only)
Measurement functions 3-axis simultaneous measurement supported
Vibration level Lv and vibration acceleration level Lva
Maximum value hold for vibration level and vibration acceleration level
Processing measurement (processing values) Time average level Leq for vibration level and vibration acceleration level
Time percentile level L5, L10, L50, L90, L95 for vibration level and vibration acceleration level
Maximum value Lmax for vibration level and vibration acceleration level
Minimum value Lmin for vibration level and vibration acceleration level
Measurement frequency range Vibration level 1 to 80 Hz
Vibration acceleration level 1 to 80 Hz
Measurement level range Vibration level, vertical direction 25 to 129 dB
Vibration level, horizontal direction 30 to 122 dB
Vibration acceleration level 30 to 129 dB
Residual noise level Vibration level, vertical direction 19 dB or less
Vibration level, horizontal direction 24 dB or less
Vibration acceleration level 24 dB or less
Frequency weighting Vertical vibration characteristics (according to Weight and Measure Act or JIS),
horizontal vibration characteristics (according to JIS),
planar characteristics (according to JIS)
Level range 10 dB steps, 6 switchable ranges, independent for 3 axes
0 to 70 dB, 10 to 80 dB, 20 to 90 dB, 30 to 100 dB, 40 to 110 dB, 50 to 120 dB
Linearity range 80 dB
RMS detection circuit Digital processing, time weighting characteristics 0.63 seconds
Sampling cycle For time average level, maximum value, minimum value,
maximum value hold: 125 μs (sampling frequency 8 kHz)
For time percentile level: 100 ms
Store modes 3 modes: Manual, Auto*2, Timer Auto*2
Manual Measurement results are stored along with measurement start time in one memory address Data stored either in internal memory or on SD card
Internal memory can hold up to 1 000 sets of 3-axis data, storage on SD card depends on card capacity
Instantaneous value and maximum hold value store Vibration level Lv and vibration acceleration level Lva instantaneous values and maximum hold values (current at the point when the pause key is pressed) are stored
Processing value store Various processing values obtained in manual mode are stored
Auto*2 Continuous store of vibration level Lv and Vibration acceleration level Lva instantaneous values Data stored on SD card only (not in internal memory)
Timer Auto*2 Continuous store of vibration level Lv and Vibration acceleration level Lva instantaneous values and processing values Measurement start time and end time can be set, with measurement carried out for 10 minutes at each full hour.
Sleep function (power save mode until measurement start) available
Data stored on SD card only (not in internal memory)
Measurement time* Measurement time in Manual store mode
Processing measurement with selected measurement time supported 500 seconds, 10 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 1 hour, 8 hours, 24 hours,
User-specified (1 to 59 seconds, 1 to 59 minutes, 1 to 24 hours)
Total measurement time Measurement time in Auto / Timer Auto store mode
Processing measurement with selected measurement time supported
500 seconds, 10 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 1 hour,
8 hours, 24 hours,User-specified (1 to 59 seconds, 1 to 59 minutes, 1 to 1 000 hours)
Lv store cycle Store interval for instantaneous value data in Auto and Timer Auto store modes
Available settings are 100 milliseconds and 1 second.
Leq processing cycle* Interval for calculation of Leq, LN and other processing data in Auto and Timer Auto store modes 500 seconds, 10 seconds, 1 minute, 5 minutes, 10 minutes, 15 minutes, 30 minutes, 1 hour, 8 hours, 24 hours,
User-specified (1 to 59 seconds, 1 to 59 minutes, 1 to 24 hours)
Pause function Pause/resume possible during instantaneous value measurement and Manual processing measurement
Pause function not available in Auto and Timer Auto modes and during waveform recording
Marker*2 Two types of marker functions available
Available only in Auto and Timer Auto store modes when setting Lv store cycle
Data recall Function for viewing stored data
Setting memory Up to 5 sets of settings can be stored in internal memory and on SD card, for later recall
Startup with settings stored in a file on the SD card possible
Clock function Internal clock enables adding date and time information to stored data and also allows automated processing measurement using a timer
Display Backlit semi-transparent color TFT LCD, WQVGA resolution (400 x 240 dots)
Bar graph update cycle: 100 milliseconds, numeric indication update cycle: 1 second,
Languages: English and Japanese, with Help function
Alarm indication Signal overload indication: Full-scale +10.0 dB
Signal underload indication: Full-scale -70.5 dB

*1 When the Measurement Time is set to “500s”, time percentile level LN is calculated based on the instantaneous value every 5 seconds.

 

LED Two-color (red/blue) type for status indication
Calibration output signal For calibration of connected external equipment
AC output: 31.5 Hz,1 Vrms, DC output: 2.5 V
AC/DC output AC or DC output selectable by menu
2.5 dia. output jacks, 3 separate channels
AC output Output impedance: 600 Ω, Load impedance: 10 kΩ or higher, AC output: 1 Vrms (full-scale)
Frequency weighting for instantaneous value display and for AC output can be set separately
DC output Output impedance: 600 Ω
Load impedance: 10 kΩ or higher
DC output 2.5 V (full-scale, 25 mV/dB)
USB Mass storage class:
When unit is connected to a computer as a storage device, SD card is recognized as a removable disk
Communication device:
When unit is used as a communication class device, operation control via communication commands is possible
RS-232C communications Using a dedicated cable, RS-232C communications are possible (using エ/O port)
BMP files Screen content can be captured and saved as a BMP file
Comparator*2 Vibration level or vibration acceleration level based comparator. Output activated
when setting level (30 to 120 dB, 1-dB steps) is exceeded.
Supported channels Single-axis channel selected with menu
Comparator output Open-collector output (using エ/O port)
Max. applied voltage: 24 V
Max. drive current: 50 mA (with 24 V applied voltage)
SD card SD / SDHC (max. capacity 32 GB)*1
SD card formatting SD card formatting function corresponds to SD formatter
Power supply IEC R6 [size AA] battery x 8 or external power supply
Battery life (23 ºC) Alkaline batteries LR6: approx. 27 hours
Nickel-hydride rechargeable batteries: Approx. 27 hours (eneloop XXⓇ*)
*Actual operation time will differ, depending on unit settings and battery brand.
AC adapter NC-98E
External power supply voltage 5 to 7 V (rated voltage 6 V)
Current consumption Approx. 80 mA (at 12 V (battery x 8) DC)
Primary side (100 V AC side) power consumption: Approx. 4 VA (with NC-98E, at 100 V AC)
Dust and water proofing IP54*3
Ambient conditions for operation Temperature: -10 ºC to +50 ºC, max. 90 % RH (no condensation)
Dimensions and weight Approx. 175 mm (H) x 175 mm (W) x 40 mm (D) mm, approx.780 g (incl. batteries)
Accelerometer: Triaxial accelerometer PV-83C Reference sensitivity: 60 mV / (m / s2)
Usage temperature range: -10 ºC to +50 ºC (no condensation)
Waterproofing: IPx7
Dimensions and weight: Approx. 67 dia. x 40.7 mm (D) (excluding connection cable)
Supplied accessories EC-54S (3 m) x 1, IEC R6 [size AA] battery x 8, carrying case x 1

* Please use the dedicated charger to charged eneloop XXⓇ batteries.
* eneloop XXⓇ is a registered trademark of Panasonic group.

*1 Use Rion products for assured operation.

*2 VX-55EX is required separately
*3 Protected against harmful dust (dust-proof type) and water splashes from any direction (splash-proof type)
*4 Accelerometer cable lengths up to 203 meters are covered by the Weight and Measure Act.

Precautions regarding waterproofing
Before use, verify that the rubber bottom cover and the battery compartment lid are firmly closed.
To maintain the water and dust proof rating, internal packing replacement is required every two years (at cost).

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