Application Notes

C-LVDT Response Speed

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Air-Bearing C-LVDT (Capacitive LVDT)

 

Adapts a capacitive sensor to a high-performance, LVDT-like contact measurement system.

 

Life-Cycle Status: Active

Details below:
Specifications | Air-Bearing Design | Mechanical

C-LVDT Specifications

Survey Response

"When we were looking for our air bearing LVDT, Lion Precision quoted quickly, efficiently and professionally. The competition had a 4 week lead time to quote, and 8 weeks delivery in product.  Lion wins hands down!”

Measurement Range

0.5 mm
0.020"

Contact Force

0.2 g to 100 g

Radial Stiffness

< 0.25 µm/g

Bearing

Linear, porous air bearing

Diamond Tip

Radius: 3.175 mm
0.125"
Mount: 4-48AGD Thread

Moving Mass

5.55  g Shaft, 1.35 g Tip, 6.9 g Total

Air Connection

1/16" ID flexible tubing

Air Consumption

3-7 lpm
0.10-0.25 cfm

Operating Air Pressure

420-480 kPa
60-70 psi

Air Filter Requirement

5 µm particle size

 

C-LVDT Air-Bearing Construction

p-lvdt cutaway iewThe air-bearing of the C-LVDT is the key to providing incredibly high-resolution contact measurements.

A porous carbon bearing flows air around the probe's plunger. The air cushion provides friction-free movement and radial stiffness that minimizes side-loading effects when scanning a moving target.

Diamond Tips

Each Lion Precision C-LVDT comes complete with an interchangeable diamond tip. The high-precision measurements performed by the C-LVDT demand the highest quality contact interface.

Diamond is Superior to Ruby:

Low Friction - Side forces cause less lateral deflection from moving targets and less hysteresis on direction reversal.

Highly Polished Surface - Diamond accepts and holds a high polish, minimizing the possibility of scratching the measured surface.

Minimal Wear - Increased accuracy and longer life.

 

C-LVDT Mechanical Outline

p-lvdt outline

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