Vibration transducer КD612
Description
КD612 allows transforming mechanical vibration of various machines and units, specifically of rotor type units (gas, steam and hydro turbines, compressors, pumps, electric motors etc.), into a proportional electric signal. It can be used in oil, gas, power and other fields of industry where it is necessary to measure vibration parameters Frequency range is 0,5-10000 Hz, which allows detecting of defects on vibration spectrum analysis.
Vibration transducers are inertia type transducers and have an integrated charge amplifier.
Vibration transducers operation principle is based on the use of direct piezoelectric effect, which is emergence of electric charge on piezoelectric plate; the charge is proportional to acceleration which influences vibration transducer.
Vibration transducer can be installed on a special bracket or on the unit work surface, specially «prepared» for sensor mounting surface.
The sensor has dynamic volt output, proportional to vibration acceleration crest value.
Vibration transducer КD612 is explosion-proof, it can be installed in explosion hazardous zones and at external installations, where there is a possibility of formation of explosive mixtures, category IIA, IIB, IIC groups Т1-Т6 according to Electric installation code classification, chapter 7.3 «Electric installations in explosion hazardous zones». Sensor mark - 0ExiaIICT4 X.
Climatic modification and placement category is group В4 acc.to GOST 15150-69.
Electric connector – 2-pin leakproof Mil-C5015.
Certificate of measuring device type approval RU.C.28.004.А №48236 was issued on 25.09.2012. Technical specifications of КD612 are proved by the Certificate of compliance № ТС RU C-RU.ГБ05.В.01074 (valid from 14.04.2015 till 14.04.2020). Vibration transducer has a permit for use № РРС 00-048412 (valid till 26.07.2017).
Calibration cycle is 3 years.
Specifications
Main technical specifications of КD612:
| No. | Specification | Meas.unit | Value |
| 1 | Dynamic characteristics | ||
| 1.1. | Response level | mV/g | 100±10% |
| 1.2. | Measuring range, no more than | m/s 2 | 490 |
| 1.3. | Frequency range (±5%) | - | 1,2 Hz... 7 kHz |
| 1.4. | Frequency range (±10%) | - | 0,8 Hz... 8 kHz |
| 1.5. | Frequency range (±3 дБ) | - | 0,5 Hz... 10 kHz |
| 1.6. | Resonance frequency of installed sensor | kHz | 25 |
| 1.7. |
Amplitude nonlinearity |
% | <±1 |
| 1.8. | Transverse sensitivity | % | <7 |
| 2. | Ambient parameters | ||
| 2.1. | Operating temperature range (only for sensor tip) | °C | from -54 to +121 |
| 2.2. | Sealing | IP68 | |
| 3. | Electric characteristics | ||
| 3.1. | System damping time (within limits of 1% from displacement with 70 °F(21°C)) | s | <2,0 |
| 3.2. | Discharge time constant | s | >0,3 |
| 3.3. | Driving voltage (power) | VDC | from 18 to 28 |
| 3.4. | DC | mA | from 2 to 20 |
| 4. | Mechanical characteristics | ||
| 4.1. | Sensor dimensions (hexagon diam. х height or L х W х H) | mm | 18 x 42,2 |
| 4.2. | Wrench torque during mounting | Н-м | from 2,7 to 6,8 |
| 4.3. | Casing material | - | Stainless steel |
| 4.4. | Weight | g | 51 |
| 4.5. | Connector type / Location | - | Mil-C5015/Upper/2 contacts |
