MEGGITTVM600Mk2 MPC4Mk2 + IOC4Mk2 machinery protection and condition monitoring module

• 1 quasi-static measurement (position / DC gap).

Note: Position processing is equivalent to Shaft relative vibration processing’s quasi-static (DC) component.

Shaft axial position (collar method and shaft-end method):

• Dynamic or auxiliary channels – with proximity sensors

• 1 quasi-static measurement (axial position).

Rotor position (collar):

• Dynamic or auxiliary channels – with proximity sensors

• 1 quasi-static measurement (position).

Differential expansion (collar method and pendulum method):

• Dynamic or auxiliary channels – with proximity sensors

• 1 quasi-static measurement (differential expansion).

Rotor expansion (collar method and pendulum method):

• Dynamic or auxiliary channels – with proximity sensors

• 1 quasi-static measurement (rotor expansion).

Quasi-static pressure:

• Dynamic or auxiliary channels – with pressure sensors

• 1 quasi-static measurement (pressure).

Quasi-static temperature:

• Dynamic or auxiliary channels – with temperature sensors

• 1 quasi-static measurement (temperature).

Housing expansion:

• Dynamic or auxiliary channels – with LVDT type sensors

• 1 quasi-static measurement (expansion).

Custom quasi-static:

• Dynamic or auxiliary channels – with other/custom sensors

• 1 quasi-static measurement (DC).

Speed:

• Auxiliary channels only (tachometers) – with speed/tacho sensors (for example, proximity sensors)

• 1 speed measurement for a single-shaft with configurable tacho ratio

• 2 speed measurements for a dual-shaft with individually configurable tacho ratios.

Note: Speed processing for dual-shafts supports machines such as gearboxes, belts, chains, pulleys, etc.

Notes:

In general, the MPC4Mk2 + IOC4Mk2 module supports one processing block – dynamic or auxiliary – per input 

channel.

A maximum of 6 single-channel processing blocks can be configured per MPC4Mk2 + IOC4Mk2 module (that is, 

four for dynamic channels and two for auxiliary channels).

A maximum of 3 dual-channel processing blocks can be configured per MPC4Mk2 + IOC4Mk2 module (that is, 

two for dynamic channels and one for auxiliary channels).

For each processing block, there are 2 to 10 processed outputs (data extractions), depending on the function.

Dual-channel processing

X-Y bearing absolute vibration:

• Dynamic channels only – with accelerometers or velocity sensors

• Fixed-frequency data acquisition

• Band-pass or ISO 2954 filtering

• Orbits – 1 unfiltered overall orbit (OVR orbit) and up to 6 filtered orbits (1X, 2X, etc.)

• Full spectrum – with up to 6 frequency-domain measurements (1X, 2X, Not 1X, etc.)

• 1 time-domain measurement (Vmax).

Note: Vmax can be calculated using the real maximum displacement value directly from the orbit (that is, the 

largest radius from the unfiltered orbit), which is a peak measurement.

Alternatively, Vmax can be calculated using an X-Y max discriminator that uses the maximum value of the 

peak-to-peak displacement values measured in two orthogonal directions of the unfiltered orbit, which is a 

peak-peak measurement.

X-Y shaft relative vibration:

• Dynamic channels only – with proximity sensors

• Fixed-frequency data acquisition

• Band-pass filtering

• Orbits – 1 unfiltered overall orbit (OVR orbit) and up to 6 filtered orbits (1X, 2X, etc.)

• Shaft centerline

• Full spectrum – with up to 6 frequency-domain measurements (1X, 2X, Not 1X, etc.)

• 1 time-domain measurement (Smax).

Note: Smax can be calculated using the real maximum displacement value directly from the orbit (that is, the 

largest radius from the unfiltered orbit), which is a peak measurement (ISO 7919-1 Method C).

Alternatively, Vmax can be calculated using an X-Y max discriminator that uses the maximum value of the 

peak-to-peak displacement values measured in two orthogonal directions of the unfiltered orbit, which is a 

peak-peak measurement (ISO 7919-1 Method B).

Shaft absolute vibration:

• Dynamic channels only – with proximity sensor and accelerometer or velocity sensor

• Fixed-frequency data acquisition

• Band-pass filtering

• Absolute spectrum – with up to 6 frequency-domain measurements (1X, 2X, Not 1X, etc.)

• 1 time-domain measurement (overall).

Shaft axial position (collar method and shaft-end method):

• Dynamic channels only – with proximity sensors

• 1 quasi-static measurement (axial position).

Note: Dual-channel Shaft axial position processing is similar to its single-channel equivalent except that two 

sensors and voting logic (typically 2oo2) are used.

Differential expansion (collar method and dual-taper method and single-taper method):

• Dynamic or auxiliary channels – with proximity sensors

• 1 quasi-static measurement (differential expansion).

Rotor expansion (collar method and dual-taper method and single-taper method):

• Dynamic or auxiliary channels – with proximity sensors

• 1 quasi-static measurement (rotor expansion).

Delta quasi-static pressure:

• Dynamic or auxiliary channels – with pressure sensors

• 1 quasi-static measurement (differential pressure (mathematical subtraction)).

Delta quasi-static temperature:

• Dynamic or auxiliary channels – with temperature sensors

• 1 quasi-static measurement (differential temperature (mathematical subtraction))