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The Extech VB400 measures vibration readings from 10 Hz to 1 Khz, up to 20.4 g's peak. The VB400 displays acceleration or velocity in both metric and imperial units.
Display LCD, 20 mm x 28 mm.
Measurement Velocity, Acceleration. (RMS value).
Mode Acceleration: g, m/s2, ft/s2
Velocity: mm/s, cm/s, inch/s
Frequency range 10 Hz to 1 KHz
Sampling time Approx. 1 second.
Operating temperature 0 to 50°C ( 32 to 122°F ).
Operating humidity < 80% RH.
Power supply DC 1.5V battery ( UM-4/AAA ) x 4 PCs.
Power consumption Approx. DC 12 mA.
Weight 240 g ( 0.53 lb ).
Dimension Meter: 175 x 40 x 32 mm, ( 6.9 x 1.6 x 1.3 inch ).
Sensing head: Round 9 mm Dia. x 30 mm.
Accuracy Specifications
| Mode | Range | Resolution | Accuracy |
Acceleration
| 0.5 to 199.9m/s2 | 0.1 | ±(5%rdg+2digits) @160Hz, 80Hz, 23±5°C |
| 0.05 to 20.39g | 0.01 | ||
| 2 to 656ft/s2 | 1 | ||
| Calibration point: 50m/s2 (160Hz) | |||
Velocity
| 0.5 to 199.9 mm/s | 0.1mm/s | ±(5%rdg+2digits) @160Hz, 80Hz, 23±5°C |
| 0.05 to 19.99 cm/s | 0.01 | ||
| 0.02 to 7.87inch/s | 0.01inch/s | ||
| Calibration point: 50mm/s (160Hz) | |||
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