A ball-on-disc instrument for measuring the frictional properties of lubricated and unlubricated contacts under an applied electrical potential, and a wide range of rolling and sliding conditions.
The MTM-EC is a modification for existing MTM systems, which can not only measure frictional properties under a wide range of speeds, loads and temperatures, but now also gives users the ability to apply an electrical potential across the ball and disc contact. This allows for the quick characterisation of lubricants, materials and formulations, and now also the study of electrical potentials in tribological contacts.
The MTM-EC keeps the unique ball-on-disc configuration of the standard MTM, enabling any combination of rolling and sliding conditions to be replicated, spanning all three lubrication regimes (boundary, mixed and EHL).
It is also an easily customisable system, with users being able to customise their own power supply and oscilloscope attachments, meaning the MTM-EC builds upon the already impressive versatility of the standard MTM. PCS Instruments will also provide an oscilloscope integrated with the MTM-EC software, and a DC power supply unit.
The AC add on for the MTM-EC further expands the functionality of the instrument with a waveform amplifier, upgraded software features, and extending software functionality to drive the function generator.
Available as either a modification to an existing MTM, or as a new system entirely, the MTM-EC is an essential rig for those in growing fields ranging from electric vehicles to renewable power generation.
| Technical Specifications | |
|---|---|
| Load | 10 N to 75 N |
| Contact Pressure | Up to 1.25 GPa (with standard steel-on-steel specimens) |
| Up to 3.10 GPa (with alternative specimens) | |
| Speed | 0 to +/- 4 m/s |
| Temperature Range | Ambient to 150 °C (below ambient with optional oil cooler) |
| Test Sample Volume | 35 ml (10 ml with optional pot filler) |
| EC Parameters | |
| DC as standard; AC possible with optional AC module | |
| Data Acquisition | Voltage and current channels sampled at up to 80 M samples per second |
| Low Range: 0 V to 10 V | |
| Measurement accuracy: +/- 20 mV | |
| High Range: 0 V to 35 V | |
| Measurement accuracy: +/- 120 mV | |
| Current | Low Range: 0 A to 200 mA |
| Measurement accuracy: +/- 0.4 mA | |
| High Range: 0 A to 2 A | |
| Measurement accuracy: +/- 20 mA | |
| MTM Power Supply | 100-240 V, 50/60 Hz, 750 VA |
| Weight | Main Unit: 30 kg - 66 lb |
| EC Unit: 8.8 kg - 19 lbs | |
| Size (h x w x d) | Main Unit: 400 mm/16 in x 400 mm/16 in x 600 mm/24 in |
| EC Unit: 400 mm/16 in x 150 mm/ 6 in x 360 mm/ 14 in | |
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