Vibration Sensors
Electrodynamic velocity sensor
- Principle of reciprocal pendulum type sensor is to induce voltage by reciprocal motion of the seismic mass with a coil in the magnetic field being suspended by a diaphragm or coil spring. Because of its high sensitivity and advanced linearity, it is suitable for detection of malfunction or deterioration of rotational machineries. Due to its structure, mounting should be done carefully for its direction or angle.
Features
- ■ High sensitivity, stable performance, advanced linearity in wide amplitude range
- ■ Relatively large output
- ■ Because of small internal resistance, long cable can be used.
- ■ External power supply is not necessary (self – power generation)
- ■ Suitable for sleeve bearing vibration measurement
-
[ Frequency response ]
The upper frequency limit is to be difined by the response of the low-pass filter. The lower frequency limit depends on its own natural frequency. Use in the frequency range lower such frequency is possible by damping the peak of the resonance.
Fixing methods
-
Fixing angleThe table below shows the fixing angle of sensor whose natural frequency is 14 Hz or 4.5 Hz.
-
Fixing direction
Both (a) and (b) are available for the sensor whose natural frequency is 14 Hz, but the sensor whose natural frequency is 4.5 Hz is limited to any one of the (a) or (b). Can not be fixed downwardly. Special fixture is needed to fix upwardly.
Comments
The difference between C and D is the shape of cable connection.
Product lineup
Outward dimension PDF■ Specifications
| Sensitivity | 10 mV/ (mm/s) |
|---|---|
| Detection axis | Horizontal or vertical |
| Natural frequency | 14 Hz |
| Frequency range | 10 to 1,000 Hz*1 |
| Maximum allowable acceleration | 100 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -20 to +80 ﾟC |
| Structure | Drop-proof (Equivalent to IP32) |
| Cable connection | Pipe thread (type C), direct connection of clamp (type D) |
| Suitable cable | 2 core shielded cable |
| Weight | 200 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.
■ Specifications
| Sensitivity | 10 mV/ (mm/s) |
|---|---|
| Detection axis | Horizontal or vertical |
| Natural frequency | 14 Hz |
| Frequency range | 10 to 1,000*1 |
| Maximum allowable acceleration | 100 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -20 to +80 ﾟC |
| Structure | Drop-proof (Equivalent to IP32) |
| Cable connection | MS connector |
| Suitable cable | 2 core shielded cable with connector |
| Weight | 300 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.
■ Specifications
| Sensitivity | 10 mV/ (mm/s) |
|---|---|
| Detection axis | Horizontal or vertical |
| Natural frequency | 14 Hz |
| Frequency range | 10 to 1,000 Hz*1 |
| Maximum allowable acceleration | 100 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -20 to +80 ﾟC |
| Structure | Watrproof (Equivalent to IP66) |
| Cable connection | Pipe thread |
| Suitable cable | 2 core shielded cable |
| Weight | 600 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.
■ Specifications
| Sensitivity | 10 mV/ (mm/s) |
|---|---|
| Detection axis | Horizontal or vertical |
| Natural frequency | 14 Hz |
| Frequency range | 10 to 1,000 Hz*1 |
| Maximum allowable acceleration | 100 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -30 to +105 ﾟC |
| Structure | Watrproof (Equivalent to IP32) |
| Cable connection | Pipe thread (type C), direct connection of clamp (type D) |
| Suitable cable | 2 core shielded cable |
| Weight | 200 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.
■ Specifications
| Sensitivity | 10 mV/ (mm/s) |
|---|---|
| Detection axis | Horizontal or vertical |
| Natural frequency | 14 Hz |
| Frequency range | 10 to 1,000 Hz*1 |
| Maximum allowable acceleration | 100 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -30 to +130 ﾟC |
| Structure | Drop-proof (Equivalent to IP32) |
| Cable connection | Pipe thread (type C) , direct connection of clamp (type D) |
| Suitable cable | 2 core shielded cable |
| Weight | 200 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.
Frequency2 or 3
directionWaterproofVibration
monitoring
system
VP-3354A / VP-3364A
― Linear pendulum type ―
■ Specifications
| Sensitivity | 10 mV/ (mm/s) | |
|---|---|---|
| Detection axis |
VP-3354A (2direction) | Horizontalx2 or Horizontal & Vertical |
| VP-3364A (3direction) | Horizontalx2 & Verticalx1 | |
| Natural frequency | 14 Hz | |
| Frequency range | 10 to 500 Hz*1 | |
| Maximum allowable acceleration | 100 m/s2 | |
| Maximum measurable displacement | 1,000 μmp-p | |
| Operating temperature range | -20 to +80 ﾟC | |
| Structure | Waterproof (Equivalent to IP32) | |
| Cable connection | Direct connection of clamp | |
| Suitable cable | 3 or 4 core shielded cable | |
| Weight | 700 g | |
| Case material | Aluminum | |
*1 Frequency range is limited by the range of connedted monitoring device.
■ Specifications
| Sensitivity | 10 mV/ (mm/s) |
|---|---|
| Detection axis | Horizontal or vertical |
| Natural frequency | 14 Hz |
| Frequency range | 10 to 500 Hz*1 |
| Maximum allowable acceleration | 98 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -20 to +70 ﾟC |
| Structure | Flame-proof (EX d ⅡBT4Gb) |
| Cable connection | Pressure-resistant packing |
| Suitable cable | 2 Core shielded cable |
| Weight | 2,300 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.
FrequencyVibration
monitoring
system
VP-3213AC/AD (Horizontal only)
VP-3223AC/AD (Vertical only) ― Linear pendulum type ―
■ Specifications
| Sensitivity | 17.5 mV/ (mm/s) |
|---|---|
| Detection axis | VP-3213 (Horizontal only), VP-3223 (Vertical only) |
| Natural frequency | 4.5 Hz |
| Frequency range | 5 to 500 Hz*1 |
| Maximum allowable acceleration | 30 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -20 to +70 ﾟC |
| Structure | Drop-proof (Equivalent to IP32) |
| Cable connection | Pipe thread (type C), direct connection of clamp (type D) |
| Suitable cable | 2 Core shielded cable |
| Weight | 500 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.
FrequencyWaterproofVibration
monitoring
system
VP-3213AW (Horizontal only)
VP-3223AW (Vertical only) ― Linear pendulum type ―
■ Specifications
| Sensitivity | 17.5 mV/ (mm/s) |
|---|---|
| Detection axis | VP-3213 (Horizontal only) , VP-3223 (Vertical only) |
| Natural frequency | 4.5 Hz |
| Frequency range | 5 to 500 Hz*1 |
| Maximum allowable acceleration | 30 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -20 to +70 ﾟC |
| Structure | Waterproof (Equivalent to IP66) |
| Cable connection | Direct connection of clamp |
| Suitable cable | 2 core shielded cable |
| Weight | 600 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.
FrequencyFlame
ProofVibration
monitoring
system
VP-3133HEX (Horizontal only)
VP-3133VEX (Vertical only) ― Linear pendulum type ―
■ Specifications
| Sensitivity | 17.5 mV/ (mm/s) |
|---|---|
| Detection axis | VP-3133HEX (Horizontal only) , VP-3133VEX (Vertical only) |
| Natural frequency | 4.5 Hz |
| Frequency range | 5 to 500 Hz*1 |
| Maximum allowable acceleration | 29 m/s2 |
| Maximum measurable displacement | 1,000 μmp-p |
| Operating temperature range | -20 to +70 ﾟC |
| Structure | Flame-proof (EX d ⅡBT4Gb) |
| Cable connection | Pressure-resistant packing |
| Suitable cable | 2 core shielded cable |
| Weight | 2,400 g |
| Case material | Aluminum |
*1 Frequency range is limited by the range of connedted monitoring device.