Instruction Manual

41
5.2 Main specifications
The main specifications of this device are described as follows.
Table 5.1 Main specifications
NTN PORTABLE VIBROSCOPE
Measurement
portion
Interface
Wireless LAN: IEEE802.11b/g, Wi-Fi
conforming
Wireless communication mode Infrastructure mode
Wi-Fi certification CE (Europe) / MIC (Japan)
Installed memory capacity 4Mbit x 16bank
Used power supply 2 chargeable batteries of size AAA
Operating temperature range
+5 to +50℃ (Guaranteed
only with attached
battery)
Operating humidity range 30 to 90% (No dewfall)
Environment-proof IP65
Power consumption
About 150mA, possible to use for about 6
hours by full charge
Battery charging
USB connection (Full charging time: About 7
hours)
Wireless distance 10m (No obstacle)
Data
processing
portion
Sampling frequency 25.6kHz / 12.8kHz / 2.56kHz
AD resolution 16bit
Number of samples 32768 (maximum)
Frequency
band
Acceleration (OA,
PEAK)
10-10kHz
Speed (OA, PEAK) 10-1kHz
Displacement (OA,
PEAK)
10-150Hz
Antialiasing filter 10kHz
Window function Hanning
Acceleration
sensor
portion
Sensitivity 2.0 mV/(m/s
2
) (standard)
Weight 145g
Size 41×87×36 mm
Resonance frequency Piezo-electric sensor: 15kHz or more
Response frequency range 10Hz to 10kHz (±3dB)
Preamp Differential type charge amplifier: 1mV/1pC
Maximum measurement
acceleration
500m/s
2
Maximum permissible
acceleration
500m/s
2
(Except dropping impact)
Maximum output voltage ±2.5V