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Model ZJ-4B quasi-static piezo d₃₃/d₃₁ Meter

Model ZJ-4B quasi-static piezo d₃₃Meter are the special instruments for measuring piezoelectric constant d₃₃ of various kind of piezoelectric materials, such as piezoelectric ceramics, crystals, and polymers. It also can be used for measuring equivalent piezoelectric constant d₃₃' of arbitrarily cut piezoelectric crystals, such as lithium niobate, quartz and tourmaline. The measurable d₃₃ value is wide with fine resolution, high reliability, simple and convenient operation. The measurable specimen抯 size and shape are unrestricted, for example, disks, blocks, rings, tubes and semispherical shell, etc.; all of them can be measured. The measured value of d₃₃ is displayed on a 3 1/2 digit meter and a 4 1/2 digit meter respectively.

In addition, ZJ-4B  is provided with the adapter for measuring d₃₁ of ceramic materials with suitable form and suitable size, such as tubes and rectangular bars,

So this instrument is indispensable to any laboratory concerned with assessment of materials, quality control in manufacture, research and development of piezoelectric materials.

The Model ZJ-4B is a new type of piezo Meter, and superior to Model ZJ-2 and ZJ-3B meter in following respects especially.

1.Make the Anti-EMI(electric magnetic interference) capability, stability and reliability more excellent.

2.Make the measurable maximum d33 value up to 4000pC/N.

3.The Force Head is made of stainless steel, so as to protect from rust.

4.Provide the d31 adapter, d31 coefficient can be measured directly.

Features :

1.Directly measures the piezo d33 constant of piezo materials in the range of 2 to 4000 pC/N. The polarity of the tested specimen is also indicated.

2.Capable of evaluating a variety of ceramic size and shapes, discs, tubes, hemispheres etc., and single crystals and polymers for d33 measuring.

3.No technical expertise is required for measuring and only two operating controls: on/off switch and 搝ero攁djusting.

4.Capable of stable measurement in severe EMI environment.

5.Piezo voltage constant g33 and g31 are quickly obtained using the formula: g33=d33/e33T and g31=d31/e33T, Here e33T is the dielectric constant from the capacitance of the specimen measured with impedance meter or bridge.

6.The ZJ-6B Meter acceptable maximum height of specimen up to 80 mm between probes for d33 measuring.

7.Test monitor output allows an empirical evaluation of potential flaws and defects by viewing the output signal waveform.

8.The Force Head is made of stainless steel, so as to protect from rust.

9.Improved the electronic circuit for protecting IC from discharge damage.

10.Install d31 adapter (as a accessory) on the Force Head of the Meter, the d31 coefficient on piezoelectric ceramic tubes and bars can be measured directly.

Specifications :

1.For d33 :

orange --

X1 range: 20 to 6000 pC/N

X0.1 range: 2 to 200 pC/N

oAccuracy --

?X1 range: ?%? to 3 count for d33 in 200 to 4000 pC/N (With optimum sizes and shapes)

?%? to 3 count for d33 in 20 to 200 pC/N (Generally feasible with care)

?X0.1 range: ?%? to 3 count for d33 in 20 to 200 pC/N (With optimum sizes and shapes)

?%? to 3 count for d33 in 2 to 20 pC/N (Generally feasible with care)

oResolution --

X1 range: ? count up to ? (1 pC/N)

X0.1 range: ? count up to ? (0.1 pC/N)

2.Dimensions:

oForce Head: F110X150mm

oElectronic unit: 260X240X120mm

3.Weight:

oForce Head: ~4kg

oElectronic unit: ~2kg