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PT 500 Machinery diagnostic system, base unit



  • Base unit for setting up wide ranging experiments in machinery diagnostics using modular accessory sets
  • Aluminium base plate with slots for quick, flexible assembly of different experimental setups
  • Speed controlled drive motor with frequency converter; control unit with digital power and speed display
  • Modern and well-structured instructional material


Technical Description

The machinery diagnostic system can be used to simulate certain types of damage and investigate its effects on the vibration spectrum.

The PT 500 base unit permits vibration measurement exercises (measurement of vibration displacement, velocity and acceleration in the time/frequency range). Field balancing of rigid rotors and alignment of shafts can also be practiced.

The key components of the base unit are the mechanical elements (clutch, bearing blocks and shaft with rotors), the drive motor with variable speed via frequency converter and tachogenerator, and the display and control unit with digital displays for power output and speed.

The motor base plate is mounted on a carriage, enabling the motor to be aligned. The large aluminium base plate with locating slots allows quick, flexible and precise assembly of the system components. A transparent protective cover provides the necessary safety during operation, and enables clear system viewing during experiments.

All parts are clearly laid out and well protected in a storage box.

To measure and evaluate all experiments, the computerised vibration analyser PT 500.04 is required. The accessory sets PT 500.10 - PT 500.19 enable repeatable simulation of the different types of damage.

Use of the trolley PT 500.01 is recommended for flexible deployment of the training system.

Learning Objectives / Experiments

- introduction to vibration measurement methods on rotating machinery systems
  * fundamentals of measurement of shaft and bearing vibrations
  * basic variables and parameters
  * sensors and measuring devices 
  * influences of speed and shaft layout
  * influence of transducer positioning
- field balancing of rigid shafts
- influence of alignment between motor and flexible coupling
- understanding and interpreting frequency spectra
- use of a computerised vibration analyser



[1] base unit for machinery diagnostic training system
[2] rigid base plate with workpiece holder slots
[3] drive motor with variable speed via frequency converter
[4] digital speed and power display
[5] 2 shafts: 1x short, 1x long
[6] 2 unbalanced flywheels with interchangeable balance weights
[7] bearing blocks, roller bearings, interchangeable 
[8] fixing holes for vibration measurement transducer
[9] flexible claw coupling and ControlflexRcoupling
[10] motor can be aligned obliquely and transversally
[11] transparent protective hood
[12] stackable box for components

Technical Data

Asynchronous motor with frequency converter
- drive power output: 0,37kW
- nominal speed: 2800min-1
Speed range via frequency converter
- 100...6000min-1
Display and control unit with digital power and speed display
- LxWxH: 475x415x195mm
 2 shafts: D=20mm, 690g and 1300g
2 unbalanced flywheels
- D=150mm, each 1675g, with interchangeable balance weights (bolts)
2 bearing blocks: roller bearings can be exchanged
ControlflexR coupling: nominal torque: 15Nm

Dimensions and Weight

LxWxH: 1100x800x500mm (base plate + hood)
LxWxH: 600x390x325mm (storage box)
Weight: approx. 95kg (complete system)
Required for Operation
230V, 50/60Hz, 1 phase or 120V, 60Hz, 1 phase 

Scope of Delivery
1 base plate with protective hood
1 display and control unit
1 asynchronous motor with frequency converter
2 shafts, 2 unbalanced flywheels, 2 clutches
2 bearing units
1 holder plate, 2 clamp sets
1 set of tools
1 storage box with foam inlay
1 set of instructional material

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