Piezoelectric velocity transducers that measures casing vibration of turbines, compressors, pumps and other rotating machinery, and outputs voltage signals.
Product OverviewProduct Overview
Piezoelectric Velocity Transducers
CV series are built-in-amplifier type velocity transducers designed for continuos condition monitoring of rotating machines such as turbines, compressors and pimps. The transducers can be used for machine condition monitoring required by the standards such as ISO 10816, ISO 20816 and API 670.
Since the amplifier including integration circuits is built in, a pure vibration signal can be obtained without influence of external noise even at lower frequency range.
Features
- Built-in-amplifier type (IEPE Type)
- Intrinsically safe (TIIS、ATEX、KTL)
- Type approval certificate for marine use
- IP67 Dust tight and water proof
- CE compliat, UKCA compliat
System Configuration Diagram
Mounting techniques and frequency response
The accuracy of high frequency response is directly affected by the mounting technique of the velocity transducer. In general, the greater the mounted surface area contact between the sensor and the machine surface, the more accurate high frequency response will be.
Selection Guide of an Optimal Vibration Transducer
Measuring the health of your rotating machinery begins at the transducer. Before choosing a transducer, a thorough understanding of the machine type, application and transducer’s specifications must be taken into account. The following table is an overview of applications for displacement, velocity and acceleration measurements. Please consult a vibration expert to find out what is right for your plant.
| Type | Eddy-Current Displacement Transducer |
Piezoelectric Velocity Transducer |
Piezoelectric Acceleration Transducer |
|---|---|---|---|
| Relevant Machinery |
|
|
|
| Applications |
|
|
|
| Main specifications | Linear range 2,000 μm | Max. velocity vibration 1,270 mm/s pk | Measurement range 490 m/s2 pk |
| Sensitivity | 7.87 V/mm | 3.94 mV/mm/s | 100 mV/9.8 m/s2 |
| Frequency response | DC – 10 kHz (-3 dB) | 2 Hz – 7 kHz (±3 dB) | 1 Hz – 10 kHz (±3 dB) |
| Sensor operating temperatures | -40 to +177 ℃ | -50 to +120 ℃ | -50 to +120 ℃ |
| Power | -24 VDC ±10 % （Shinkawa model FK-202F） |
18 – 30 VDC, 2 – 10 mA （Shinkawa model CV-861） |
20 – 30 VDC, 2 – 10 mA （Shinkawa model CA-302） |
| Notes |
|
|
|