IDVP.01.K Rotor Vibration Monitoring Module
Product description
IDVP.01.K Rotor Vibration Monitoring Module
The IDVP.01.K Vibration Monitoring Module (VMM) is предназначен for non-contact measurement of relative displacement and relative vibration displacement, as well as monitoring of the peak-to-peak relative vibration displacement of rotating parts of equipment (units, machines, and mechanisms). The housing of the primary measuring transducer is made of dielectric material (glass-fiber reinforced laminate).
The IDVP.01.K VMM is recommended for monitoring the relative displacement and relative vibration displacement of slip rings in the brush-contact assembly of turbo-generator units. The IDVP.01.K can also be used as a standalone module for measurement, alarm signaling, and protection of machines and mechanisms against exceeding emergency threshold levels of monitored parameters, as well as a component of the “PULS 1.02” monitoring and measuring system, process control automation systems (PCS/SCADA), or other automated systems.
Composition of the IDVP.01.K Vibration Monitoring Module
The IDVP.01.K Vibration Monitoring Module consists of:
- a non-contact single-channel eddy-current primary measuring transducer (PMT) of the PP-IP.K type;
- a measuring converter (MC) of the FP-IP type.
The IDVP.01.K Vibration Monitoring Module (VMM) provides:
- continuous measurement of current values of relative displacement and relative vibration displacement of rotating equipment parts;
- monitoring and alarm signaling for: exceeding emergency threshold levels (3 levels) of relative vibration displacement peak-to-peak value, vibration jump detection, and exceeding the low-frequency (LF) vibration level;
- transmission of measured values of relative displacement and relative vibration displacement peak-to-peak value, as well as amplitudes and phases of harmonic components of relative vibration displacement via the RS-485 serial interface to external recording and visualization devices;
- fault signaling for the primary measuring transducer (PMT), including short circuit or open circuit conditions in the communication line between the PMT and the measuring converter (MC);
- transmission of information on аварійні events and faults via the RS-485 serial interface to external recording and visualization devices;
- generation of discrete output signals for vibration jump events, exceeding LF vibration levels, and reaching emergency threshold levels of relative vibration displacement peak-to-peak value for external alarm systems;
- generation of a standardized 4–20 mA DC analog output signal proportional to the relative vibration displacement peak-to-peak value;
- generation of a 0–3 V analog voltage output signal proportional to the current values of relative vibration displacement and relative displacement;
- automatic compensation of ambient temperature influence (temperature compensation) on measured values of relative displacement and relative vibration displacement;
- automatic functional self-diagnostics.
Characteristics of the IDVP.01.K Mechanical Vibration Measurement Module
| Parameter | Specification |
|---|---|
| Relative vibration displacement peak-to-peak measurement range, µm | 20¹ – 8000² |
| Relative displacement measurement range, µm | 20¹ – 8000² |
| Frequency measurement range of relative vibration displacement peak-to-peak value, Hz | 0.05 – 500³ |
| Reference measurement frequency, Hz | 80⁴ |
| Maximum permissible basic relative measurement error of relative vibration displacement peak-to-peak value at the reference frequency, % | ±5 |
| Amplitude-frequency response (AFR) non-uniformity, max, % | ±3 |
| Maximum permissible basic relative measurement error of relative displacement, % | ±5 |
| Nominal conversion factor of relative vibration displacement/displacement, mV/µm | 0.25⁵ |
| Maximum deviation of the actual conversion factor value of relative vibration displacement at the reference frequency, max, % | ±5 |
| Maximum deviation of the actual conversion factor value of relative displacement, max, % | ±5 |
| Relative vibration displacement signal phase measurement range, degrees | 0–360⁶ |
| Maximum permissible phase measurement error of the relative vibration displacement signal, max, degrees | ±3 |
| Technological gap¹ ST between the PMT tip and the monitored surface, mm | 2.0 |
| Initial setting gap⁷ Su according to LCD indication readings, mm | 5.0 ± 0.25 |
| LCD information refresh time, max, s | 0.5 |
| Load resistance for 4–20 mA output signal, max, Ω | 500 |
| Output analog voltage signal range, V | 0–3 |
| Number of discrete (logic) outputs | 5 |
| Output discrete module signals | Open collector |
| – DC voltage, max, V | 12 |
| – Current, max, A | 1 |
| Digital communication interface types | RS485 (ModBus RTU) |
| Degree of protection | |
| – Primary measuring transducer (PMT) | IP67 |
| – Measuring converter (MC) | IP20 |
| Dimensions | |
| – PMT diameter; body length without stem, mm | 38; 123 |
| – MC height × width × depth, mm | 114.5 × 17.5 × 99 |
| Weight | |
| – PMT without cable, max, g | 310 |
| – MC, max, g | 125 |
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Measurement range with standardized metrological characteristics. The actual measurement range is from 10 µm to 10 mm.
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The maximum upper measurement limit of the relative vibration displacement peak-to-peak value together with relative displacement shall not exceed 8 mm.
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Frequency measurement range with standardized metrological characteristics. The actual frequency measurement range of the relative vibration displacement peak-to-peak value is from 0.05 Hz to 1500 Hz.
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Manufacturing with a different reference frequency value is available upon Customer request.
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The DC component of the output analog voltage signal is proportional to the relative displacement, while the AC component is proportional to the relative vibration displacement.
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The amplitudes and phases of harmonic components of vibration displacement are measured only when a keyphasor signal is applied to the corresponding input of the measuring converter (MC).
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Initial setting gap between the tip of the primary measuring transducer (PMT) and the monitored surface:
S₀ = ST + Su.
Operating conditions for the PP-IP.K primary measuring transducer (PMT):
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ambient temperature (air, water vapor, oil vapor): from −30 °C to +100 °C (short-term up to +120 °C);
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electromagnetic field strength: up to 400 A/m;
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relative air humidity: up to 98% at +35 °C; moisture condensation on the surface of the primary measuring transducer is permissible;
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atmospheric pressure: from 84 kPa to 106.7 kPa.
Operating conditions for the FP-IP measuring converter (MC):
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ambient air temperature: from +5 °C to +60 °C;
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electromagnetic field strength: up to 100 A/m;
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relative air humidity: up to 80% at +25 °C; moisture condensation is not permitted;
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atmospheric pressure: from 84 kPa to 106.7 kPa.
Service life of the IDVP.01.K Vibration Monitoring Module (VMM): 10 years from the date of delivery to the Customer.
Warranty operating period of the IDVP.01.K Vibration Monitoring Module (VMM): 24 months from the date of commissioning.
Warranty storage period of the IDVP.01.K Vibration Monitoring Module (VMM): 36 months from the date of purchase.
Example of installation of the primary measuring transducer for monitoring the vibration condition of slip rings in the brush-contact assembly.
