DT Series Elements with Lead Attachment
DT Series Rev 1 www.meas-spec.com 05/12/2009
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Piezoelectric film sensor
AC Coupled
Silver Ink Electrodes
Protective Coating over Electrodes
Lead Wires Attached with Rivets
FEATURES
• Minimum Impedance: 1 MΩ
• Preferred Impedance: 10 MΩ and
higher
• Output Voltage: 10 mV to 100V
depending on Force and Circuit
Impedance
• Storage Temperature: -40°C to
+70°C [-40°F to 160°F]
• Operating Temperature: 0°C to
+70°C[32°F to 160°F]
APPLICATIONS
• Sensing Direct Contact Force
• Recording Time of an Event
• Counting Number of Impact Events
• Measuring Impact Related Events
The DT Series of Piezo film sensors
elements are rectangular elements of Piezo
film with silver ink screen printed electrodes.
They are available in a variety of different
sizes and thicknesses. Lead attachment is
accomplished using a riveted lug going to
12” (300 mm) of 28 AWG wire.
The DT film element produces more then 10
millivolts per micro-strain. The capacitance
is proportional to the area and inversely
proportional to the thickness of the element.
The DT elements are supplied with a thin
protective coating over the active electrode
area to prevent oxidation to the top surface
of the silver ink.
typical piezo properties
Symbol Parameter PVDF Units
t Thickness
9, 28, 52,
110 μm
d31 23
d33
Piezo Strain
Constant -33 (10-12)C/N
g31 216
g33
Piezo Stress
constant -330 (10-3)Vm/N
k31 12%
kt
Electromechanical
Coupling Factor 14%
C Capacitance
380 for
28μm pF/cm2, @ 1KHz
Y Young’s Modulus 2-4 109 N/m2
V0 Speed of Sound 2.2 103m/s in thickness
direction
DT Series Elements with Lead Attachment
DT Series Rev 1 www.meas-spec.com 05/12/2009
2 of 2
The information in this sheet has been carefully reviewed and is believed to be accurate; however, no responsibility is assumed for inaccuracies. Furthermore, this information does no
t
convey to the purchaser of such devices any license under the patent rights to the manufacturer. Measurement Specialties, Inc. reserves the right to make changes without further notic
e
to any product herein. Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor doe
s
Measurement Specialties, Inc. assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation
consequential or incidental damages. Typical parameters can and do vary in different applications. All operating parameters must be validated for each customer application b
y
customer’s technical experts. Measurement Specialties, Inc. does not convey any license under its patent rights nor the rights of others.
ordering information
North America
Measurement Specialties, Inc.
1000 Lucas Way
Hampton, VA 23666
Sales and Customer Service
Tel: +1-800-745-8008 or
+1-757-766-1500
Fax: +1-757-766-4297
Technical Support
Email: piezo@meas-spec.com
Europe
MEAS Deutschland GmbH
Hauert 13
44227 Dortmund
Germany
Sales and Customer Service
Tel: +49 (0)231 9740 21
Technical Support
Tel: +49 (0)6074 862822
Email: piezoeurope@meas-spec.com
Asia
Measurement Specialties (China), Ltd.
No. 26 Langshan Road
Shenzhen High-Tech Park (North)
Nanshan District
Shenzhen, China 518107
Sales and Customer Service
Tel: +86 755 3330 5088
Technical Support
Email: piezo@meas-spec.com
DIMENSION in INCHES (mm)
Model Number Part Number Film
Thickness
A
Film
B
Electrode
C
Film
D
Electrode
Total
Thickness
(μm)
Cap
(nF)
DT1-028K/L w/rivets 1-1002908-0 28 μm .64 (16) .484 (12) 1.63 (41) 1.19 (30) 40 1.38
DT1-052K/L w/rivets 2-1002908-0 52 μm .64 (16) .484 (12) 1.63 (41) 1.19 (30) 64 .740
DT2-028K/L w/rivets 1-1003744-0 28 μm .64 (16) .484 (12) 2.86 (73) 2.42 (62) 40 2.78
DT2-052K/L w/rivets 2-1003744-0 52 μm .64 (16) .484 (12) 2.86 (73) 2.42 (62) 64 1.44
DT4-028K/L w/rivets 1-1002150-0 28 μm .86 (22) .740 (19) 6.72 (171) 6.72 (171) 40 11.00
DT4-052K/L w/rivets 2-1002150-0 52 μm .86
(
22
)
.740
(
19
)
6.72
(
171
)
6.72
(
171
)
64 5.70
