| Model |
Extech VB500-NIST |
| Acceleration |
656ft/s2, 200m/s2, 20.39g (peak) |
| Velocity |
7.87in/s, 200mm/s, 19.99cm/s (peak) |
| Displacement |
0.078in, 2mm (peak-to-peak) |
| Resolution |
1ft/s2, 0.1m/s2, 0.01g; 0.01in/s, 0.1mm/s, 0.01cm/s; 0.001in, 0.001mm |
| Basic accuracy |
±(5%+2 digits) |
| Memory |
20M data records using 2G SD card |
| Display |
82 x 61mm (”) Backlit LCD |
| Display update rate |
1 second (approx.) |
| Number of channels |
Four (4) input channels (CH1, CH2, CH3, CH4) |
| Measurement Types |
Velocity, Acceleration, and Displacement
Acceleration/Velocity: RMS, Peak, and MAX HOLD
Displacement: p-p (peak to peak), MAX HOLD |
| Units of measure |
Acceleration: m/s2, g, ft/s2
Velocity: mm/s, cm/s, inches/s
Displacement: mm, inches |
| Frequency range |
10Hz to 1KHz (sensitivity in this range meets ISO2954) |
| Peak Hold |
Acceleration, Velocity: Measures and updates peak value
Displacement: Measures/updates the p-p (peak-to-peak) value |
| Max. Hold |
Acceleration, Velocity: Measures and updates Max. peak value
Displacement: Measures/updates Max. p-p (peak-to-peak) value |
| Max. Hold Reset |
Push-button activation |
| Zero function |
Push-button activation for Acceleration (RMS) measurements |
| Datalogger sampling rate |
Automatic: 1 second to 3600 seconds
Manual: Push-button stores reading |
| Datalogger accuracy |
≤ 0.1% error of total saved data (typical) |
| Memory card |
SD memory card (1G to 16G sizes) |
| Data Hold |
Freezes displayed reading |
| Audio Output |
mini stereo phone jack, Max voltage; 2V, output impedance; 100ohms |
| Operating Temperature |
0 to 50°C (32 to 122°F) |
| Operating Humidity |
85% R.H. max. |
| Power Supply |
Eight (8) 1.5V ‘AA’ batteries or 9V AC adaptor |
| Power Consumption |
Normal operation (backlight and datalogger OFF): approx. 12mAdc
With backlight OFF and datalogging ON: approx. 35mAdc |
| Weight |
Meter: 515g (1.13 lbs.)
Probe with cable and magnetic base: 99g (0.22lbs.) |
| Dimensions |
Main instrument: 203 x 76 x 38mm (8 x 3 x 1.5””)
Probe: 16 x 37mm (0.63 x 1.45”) diameter
Cable length: 1.2m (3.94ft) |