Applications & Features:

• Assessment and Quality Control
• Research and Development
• All systems directly measure d33
• PC-Driven or stand-alone operation
• Direct readings for almost any shape and size

The Piezotest Advantage:

• Variable test force and frequency
• Maximum 0.01 pC/N resolution (PM200 & PM300)
• Many features beyond those of a standard 'd33 meter':
• Options to measure coefficients g33, d31, d15, g31, g15, C, ε^T₃₃, tan δ, etc.
• NEW: High-repeatability mechanism giving better than 1% repeatability
• NEW: High compliance electrode mechanism ideally suited to thin films, polymers and other delicate devices
• NEW: Option for clamping force adjustment and measurement
• NEW: Option for temperature, humidity measurement & recording

How it works

The system works by clamping the sample, and subjecting it to a low frequency force. Processing of the electrical signals from the sample, and comparison with a built-in reference, enables the system to give a direct reading of d33 – one of the most useful parameters in evaluating the material. This is a material coefficient representing charge per unit force in the direction of polarisation.

The method of operation of this type of d33 meter is sometimes called the "quasi-static" or "Berlincourt" method. A key principle is that the test frequency is low compared with any likely system or sample resonances, yet high enough that a conclusive measurement can be made in a few seconds. The result is a quick, simple test.

The systems from Piezotest represent the most advanced implementation of this method available today, employing highly precise engineering, low noise electronics and latest digital signal processing techniques to give high resolution, repeatable, stable measurements on all materials. The PiezoMeter is therefore the system of choice for customers with demanding applications.

Why use a PiezoMeter?

It is fast, convenient, and accurate. The PiezoMeter offers superior resolution and consistency compared to static methods, and is appropriate to almost any sample geometry. An accurate reading is achieved in seconds – all that is required is an electroded area where one can apply the force and collect the charge.

Either as standard, or with special options, our PiezoMeter systems can handle piezo ceramics, piezo polymers and piezo films, whether free-standing or mounted on Silicon or other substrates, as well as composite materials and devices.