![background image](http://html1.mh-extra.com/html/mmf/vm25/vm25_instruction-manual_1813941040.webp)
14. Technical Data
Displayed measurand
True RMS and peak value (crest value) of vibration acceler-
ation, velocity and displacement,
K(t) rolling bearing parameters,
rotation speed,
temperature
Measuring range
at defined accuracy
Acceleration: 0.1 – 240 m/s²
Velocity: 0.1 – 1000 mm/s; > 40 Hz frequency dependent
Displacement: 0.01 – 60 mm; > 10 Hz frequency dependent
Display resolution
Acceleration: 0.01 m/s²
Velocity: 0.1 mm/s
Displacement: 0.001 mm
temperature: 1 °C
rotation speed: 1 min
-1
Measurement accuracy
± 5 % ± 2 digits
Frequency Ranges
Acceleration: 0.2 Hz – 10 kHz
Acceleration: 3 Hz – 1 kHz
Acceleration: 1 kHz – 10 kHz
Velocity: 10 – 1000 Hz,
Velocity: 2 Hz – 1000 Hz
Displacement: 5 Hz – 200 Hz
3
rd
order Butterworth filter
Overload indication
at > 200 m/s² vibration acceleration on the sensor or
>1000 mm/s or > 60 mm after the integrator
Frequency analysis
125 lines,
peak value of vibration acceleration or velocity,
frequency ranges: 23, 46, 91, 183, 366, 732, 1466, 2928, 5856,
11712 Hz,
lowest frequency: 1 Hz
refresh rate: 1/s
Window type: Hamming
Measurand memory
Flash, 16000 measurement records, 1000 FFT records
Sensor input
low power IEPE, 2 mA / 12 V, socket binder 711, 3 pins
Analog/digital converter
24 bit
Rotation speed sensor
1 – 9999 revolutions / min
measuring distance: 0.3 .. 1 m,
laser reflex sensor, insusceptible to ambient light
Temperature sensor
infrared, -40 .. 125 °C, ± 2 K
Laser pointer
< 1 mW, 650 nm (class 2)
38