Digital Charge-input Vibrometer (VM-1970)
- Covers from 1 Hz up to 100 kHz
- Conversion of the measured value or change of unit are automatic. No need for complicated operations and easy to read indication.
Features
- ■ H function is measurable
- ■ Level alarm function
- ■ Vibration severity calculation according to ISO-10816 is available.
System Composition
■ AC OUTPUT (±5 V at full scale, load 10 kΩ or higher) Waveform output to oscilloscope, stroboscope and data recorder etc.
■ DC OUTPUT (±5 V at full scale, load 10 kΩ or higher) Vibration lebel output to pen recorder
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Specifications
| Item | Specification | |
|---|---|---|
| Input signal | Piezoelectric accelerometer | |
| Frequency range | Acceleration : 1 Hz to 100 kHz (±3 dB), 3 Hz to 70 kHz (±0.5 dB) Velocity : 3 Hz to 6 kHz (±0.5 dB) Displacement : 3 Hz to 600 Hz (±0.5 dB) |
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| Measurement range (for an accelerometer of charge sensitivity 1.0–9.99pc / m/s2) |
Acceleration | 1, 10, 100, 1000, 10000 m/s2 5 range |
| Velocity | 3 Hz to 1, 10, 100, 1000 cm/s 4 range 10 Hz to 1, 10, 100, 1000 cm/s 4 range 30 Hz to 0.1, 1, 10, 100, 1000 cm/s 5 range |
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| Displacement | 3 Hz to 1, 10, 100, 1000 mmp-p 4 range 10 Hz to 0.1, 1, 10, 100, 1000 mmp-p 5 range 30 Hz to 0.01, 0.1, 1, 10, 100 mmp-p 5 range |
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| H function | Value of acceleration detected after passing 2 kHz to 15 kHz bandpass filter then detected and processed by 1 kHz low pass filter. Unit is the same as of acceleration. |
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| Filter response | Lower cutoff frequency : Off (1 Hz), 3, 10, 30 Hz Higher cutoff frequency : 300Hz, 1, 3, 10 k, Off (100 kHz) Cutoff : -18 dB Butterworth |
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| Indication |
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| Level watching function |
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| Output |
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| Ambient temperature / humidity | 0 to +40ﾟ C / 85 %RH or lower (non-condensing) | |
| Power supply | Commercial power supply : AC100 V ±15 % 50 / 60 Hz 20 VA or less Battery : D size 4 pcs. life 10 hours or longer External DC power supply : DC9 to 12 V |
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| Size / Mass | 200 (W) x 290 (D) x 150 (H) mm (excluding connectors etc.) / Approx. 5 kg | |
Standard composition
| Item | Quantity | Notes |
|---|---|---|
| AC adapter | 1 | For AC 100 V |
| AC adapter plug | 1 | Accessory for AC adapter |
| Output cable | 1 | 1.5 m |
| Screw driver | 1 | Flathead screwdriver |
| Fuse | 2 | 2 A |
| Main unit plastic cover | 1 | – |
| Instruction manual | 2 | – |
Option
| Item | Notes |
|---|---|
| Auxiliary output connector | For alarm relay |
| Conversion transformer | For AC adapter |