It is important to note that the same 2-layer
transducer can be used as either a bending motor, a bending generator, an extending motor, or an extending generator. Part numbers
pertain to geometry and construction rather than mode of operation.
The part number describes the mounting arrangement, part thickness, piezoceramic material, reinforcement material, size, polarization, and
usage.
This is an unmounted 2-piezo layer transducer, made with PSI-5A4E
piezoceramic (nickel electrodes) and a brass center reinforcement. It is 1.25" long, 0.125" wide, and .015" thick, and is X-poled.
It may be used as:
a bending motor poled for 2-wire series operation,
a bending generator poled for 2-wire series operation,
an extension motor poled for 3-wire parallel operation, or
an extension generator poled for 3-wire parallel operation.
D
2
20
- A4
SS
-503
Y
B
This is a transducer with 2-piezo layers,
made with PSI-5A4E piezoceramic (nickel electrodes) and a stainless steel center reinforcement. It is 2.50" long, 1.25" wide,
.020" thick, and is Y-poled. It could be used as:
a bending motor poled for 3-wire parallel operation,
a bending generator poled for 3-wire parallel operation,
an extension motor poled for 2-wire series operation, or
an extension generator poled for 2-wire series operation.
However, the "D" for the mounting style indicates it has been pre-wired and
has had mounts attached to the front and back ends. The "B" for useage indicates it is intended to be used as a bender. Therefore,
it could be used as:
a bending motor poled for parallel operation, or
a bending generator poled for parallel operation.
T - Transducer elements consist of the transducer alone. They are not
mounted or wired.
Q - Quick-Mounts are pre-wired and mounted on one end.
D - Double Quick-Mounts are pre-wired, and mounted on both ends.
As layers are added, the volume of piezoceramic increases.
Greater volume produces greater energy output in roughly the same space.
2 - The transducer has 2 piezo layers. This is the most common structure.
4 - The transducer has 4 piezo layers.
The third and fourth positions indicate the
total thickness of the transducer element:
15 - .015" (.38mm)
19 - .019" (.48mm)
20 - .020" (.51mm)
23 - .023" (.58mm)
26 - .026" (.66mm)
34 - .034" (.86mm)
A4
PSI-5A4E is an industry type 5A (Navy Type II)
piezoceramic. Thin vacuum sputtered nickel electrodes produce extremely low current leakage and low magnetic permeability.
5A has a wide temperature range and is most insensitive to temperature.
H4
PSI-5H4E is an industry type 5H (Navy Type VI)
piezoceramic. It has a high motion/volt and charge/newton rating, which is useful when voltage or force is limited. Thin
vacuum sputtered nickel electrodes produce extremely low current leakage and low magnetic permeability. However, its temperature
range is limited and its properties are more sensitive to temperature.
A3
PSI-5A3 is an industry type 5A (Navy Type II)
piezoceramic. It has non-magnetic electrodes. It has a wide temperature range and is most insensitive
to temperature.
Typically, the center shim reinforcement material does not
affect performance. Rather, it enhances other properties such as strength, thermal range, and magnetism. The exception is the
composite reinforced shim (used in our High Performance elements) which provides higher motion, force, and
response.
blank:
(Brass)
Economic, non-magnetic, and suitable for a wide variety
of uses.
SS:
(Stainless Steel)
High strength, suitable for cryogenic and vacuum
use.
CL:
(Composite)
High performance shim offers highest motion, force and
response.
NM:
(Non-Magnetic)
Fabricated using non-magnetic electrodes and
non-magnetic reinforcing material.
NO:
(No Shim)
Because they have no center shim, they are not
intended to be center accessed.
Size
Width
Length
Designations
Inches
(mm)
Inches
(mm)
- 103
- 203
- 303
- 503
.125
.250
.500
1.250
(3.2)
(6.4)
(12.7)
(31.8)
1.250
1.250
1.250
2.50
(31.8)
(31.8)
(31.8)
(63.5)
Custom sizes can be made to order.
Please
contact our
sales department for a quote.
2-layer piezo transducers may have
their layers poled in opposite directions
(X-poled), or
poled in the same direction
(Y-poled).
X-poled
Y-poled
Both polarization and wiring determine
whether the element operates in
serial mode or
parallel mode. Parallel mode requires that the center shim be accessed so that a
third wire may be attached.
2-Layer Bending Element
X-poled for
Series Operation (2-wire)
2-Layer Bending Element
Y-poled
for Parallel Operation (3-wire)
2-Layer Extension Element
Y-poled for
Series Operation (2-wire)
2-Layer Extension Element
X-poled
for Parallel Operation (3-wire)
Because of the possible confusion that
can arise due to the combinations of poling, wiring, and operating modes, it helps to establish whether the element is going to
be used as a bender or extender.
B - Bender
E - Extender
