Vibration Monitoring

Overview

The sensors measure air gap /axial shift (IVD-2) or root-mean-square (rms) value of the vibration speed in one (IVD-4) or one/three mutually perpendicular directions (IVD-3). IVD-3 and IVD-4 can be used in the systems of vibration diagnostics, thanks to the capability of sending arrays of values, proportional to the instantaneous acceleration. The arrays can then be used to calculate spectral components of vibration with fast conversion by Fourier.

The sensors are based on RISC-controllers with required periphery. All the conversions of the input signal are done inside the sensors, that allows to:

  1. Improve resistance to noise
  2. Improve accuracy of measurement
  3. Avoid the use of additional converters.

IVD vibration sensors can be used in explosion-risk areas and have the following specifications:

  • Explosion-proof level in form of a special shell and circuit:
  • Ingress protection – IP67
  • Operating temperature range – -60 … +80 °C (-60 … +85 °C for IVD-4)
  • Operating voltage – 12…24 VDC (12…26 VDC for IVD-4)
  • Data exchange interface – RS-485, Modbus RTU
  • Software calibration and configuration of the sensors with ConfigIVD tool, supplied together with the sensors

For the connection into the existing automation systems, IVD vibration sensors have modifications with unified analog output, 4…20 mA.

To provide protection of the equipment without integration into the automation systems, the sensors can be ordered as sensors-switches. In this case, warning and emergency setpoints are written into the internal memory of the sensor during configuration. After reaching the corresponding level, the sensor forms a digital, “open drain”, signal.

Comparison of the Specifications

Parameter
IVD-2
IVD-3
IVD-4
TypeDisplacement sensorsAccelerometerAccelerometer
Axes of measurement-One/threeOne
Air gap/axial shift measurement range0.1…6.0 mm--
Root-mean-square (rms) value of vibration speed, measurement range-0.5…30 mm/s0.5…30 mm/s
Acceleration measurement range-0.2…45 m/s20.2…45 m/s2
Unified current signal, in proportion to air gap/axial shift4…20 mA--
Unified current signal, in proportion to rms value of vibration speed-4…20 mA4…20 mA
Frequency range for rms value of vibration speed-10…1 kHz10…1 kHz
Supported interfacesRS-485RS-485RS-485
Supported protocolsModbus RTUModbus RTUModbus RTU
Calibration and configuration softwareConfigIVDConfigIVDConfigIVD
Air gap measurement errorLess than 0.5%--
RMS value of vibration speed, measurement error-Less than 10%Less than 10%
Output data update frequencyOnce a secondOnce a secondOnce a second
Operating voltage12...24 VDC12...24 VDC12...26 VDC
Current consumptionLess than 60 mALess than 60 mALess than 60 mA
Ingress protection gradeIP67IP67IP67
Hazardous area approval
Flameproof enclosure (Exd)РВ Ex d I Mb X / IEx d IIC T5 Gb ХРВ Ex d I Mb X / IEx d IIC T5 Gb Х-
Intrinsic safety (Exi)0Ex ia IIA Т5 Ga Х0Ex ia IIA Т5 Ga Х0Ex ia IIA Т5 Ga Х
Weight, with 3.5 m cable1.5 kg1.2 kg-
Weight, with 0.7 m cable--0.3 kg
Dimensions (IVD-2 without cartridge)80 x 64 x 47 mm65 x 50 x 50 mm52 x 60 x 43 mm
M12 x L cartridge dimensionsL = 63, 80, 100, 125, 160 mm--
Operating temperature range-60…+80 °C-60…+80 °C-60…+85 °C
Vibration Sensor IVD-2

The sensor was designed to be used in vibration monitoring and protection systems at the power stations, oil pumping stations, gas compressor stations, and other industrial objects. The sensor can be installed into explosive areas of the premises and external installations, where flammable vapor and gas-air-mixtures of the categories IIA, IIB, IIC of the groups T1-T5, could be formed.

The sensor detects a measurement of the air gap (axial shift) between face of the sensitive part of the sensor and object surface (rotor shaft).

FEATURES

  • Axial shift measurement – air gap between the face of the sensitive part of the sensor and object surface (face of the rotor shaft)
  • Data exchange via RS-485 (Modbus RTU protocol)
  • Output of the signal as a unified current at 4-20 mA
  • Comparison of the measured parameter to the limit setpoints, stored in the non-volatile memory of the sensor
  • Generation of statuses (Warning and Failure) and generation of discrete signals to the external devices in case of exceeding the set limits (sensor-relay)
  • Remote configuration of the parameters: network address, communication speed, warning and failure setpoints; remote calibration of the measured channel

DESIGN

  • Housing material – nickel-coated steel
  • Explosion protection type – explosion-proof shell

ORDERING INFORMATION

To order, use the following part number:

IVD-2X-KYMZ, where:
X – Output signal type:
C – digital
T – digital/current (4-20 mA)
V – digital/discrete
Y – Cable length, 1.5 to 20 m
Z – Protection metal hose length, 0 to 15 m

Vibration Sensor IVD-3

The sensor was designed to be used in vibration monitoring and protection systems at the power stations, oil pumping stations, gas compressor stations, and other industrial objects. The sensor can be installed into explosive areas of the premises and into external installations, where flammable vapor and gas-air-mixtures of the categories IIA, IIB, IIC of groups T1-T5, could be formed.

The sensor provides measurement of the root-mean-square value of vibration speed / instantaneous value of vibration acceleration in one or three mutually perpendicular directions.

FEATURES

  • Measurement of vibration speed root-mean-square value in one or three mutually perpendicular directions
  • Signal decomposition into frequency components via Fourier fast conversion
  • Data exchange via RS-485 (Modbus RTU protocol)
  • Output of the signal as a unified current at 4-20 mA, in proportion to root-mean-square value of the vibration speed
  • Comparison of the measured parameter to the limit setpoints, stored in the non-volatile memory of the sensor
  • Generation of statuses (Warning and Failure) and discrete signals to the external devices in case of exceeding the set limits (sensor-relay)
  • Remote configuration of the parameters: network address, communication speed, warning and failure setpoints; remote calibration of the measured channel

TECHNICAL SPECIFICATIONS

Measuring range of the root-mean-square value of vibration speed in each of the three sensitivity axesFrom 0.5 to 30 mm/s
Measuring range of the instantaneous values of vibration accelerationFrom 0.2 to 45 m/s²
Frequency range of root-mean-square value measurement in each of the three sensitivity axesFrom 10 to 1000 Hz
Range of the output current signal when measuring mean-square values of vibration speed (unified)4-20 mA
Range of the output current signal when measuring instantaneous values of vibration acceleration (non-unified)0-20 mA
Range of the allowed relative error when measuring mean-square values of vibration speed in the full range of frequencies and amplitudes± 10 %
Relative coefficient of the lateral sensor conversion, max 5%5%
Level of own noise in the values of the mean-square values of the vibration speed, max0.03 mm/s
Power supply12 … 24 VDC
Operating temperature range-60 … +80 °C
Output update time1 s
Settling time before starting operation, max10 s
Current required (without use of discrete channels), max60 mA
Ingress protectionIP67
Explosion proof markingPB Ex d I Mb X

IEx d IIC T5 Gb X

0Ex ia IIA T5 Ga X
Weight (with 3.5 m cable)1.2 kg
Calibration interval3 years

DESIGN

  • Housing material – nickel-coated steel
  • Explosion protection type – explosion-proof shell

ORDERING INFORMATION

To order, use the following part number:

IVD-3XY-KAMB, where:
X – Output signal type:
C – Digital
T 420 – Digital and current (4-20 mA)
V – Digital and discrete
T – Digital on mean-square values of vibration speed and current (0-20 mA) for vibration acceleration
Y – Sensitivity axes:
1 – measurement over one axis
3 – measurement over three axes
A – Permanent attached cable length, 1.5 to 20 m
B – Protection metal hose length, 0 to 15 m

Vibration Sensor IVD-4

The sensor was designed to be used in vibration monitoring and protection systems at the power stations, oil pumping stations, gas compressor stations, and other industrial objects. The sensor can be installed into explosive areas of the premises and into external installations, of the categories IIA, groups T1-T5, where flammable vapor and gas-air-mixtures could be formed.

The sensor provides measurement of the root-mean-square value of vibration velocity / instantaneous value of vibration acceleration in one spatial direction.

FEATURES

  • Measurement of vibration velocity root-mean-square value and instantaneous value of vibration acceleration in one direction
  • Signal decomposition into frequency components via Fourier fast conversion
  • Data exchange via RS-485 (Modbus RTU protocol)
  • Output of the signal as a unified current at 4-20 mA, in proportion to root-mean-square value of the vibration velocity
  • Output of the signal as a unified current at 0-20 mA, in proportion to instantaneous value of the vibration acceleration
  • Remote configuration of the parameters: network address, communication velocity, warning and failure setpoints; remote calibration of the measured channel

DESIGN

  • Housing material – nickel-coated steel
  • Explosion protection type – explosion-proof shell

ORDERING INFORMATION

To order, use the following part numbers:

IVD-4X, where:
X – Output signal type:
C – Digital and current signal (4-20 mA) for vibration velocity
U – Digital and current signal (0-20 mA) for vibration acceleration

IVD-4XY, where:
X – Output signal type:
C – Digital and current signal (4-20 mA) for vibration velocity
U – Digital and current signal (0-20 mA) for vibration acceleration
Y – Cable in metal housing, length in meters