LDT1-028K Piezo Sensor w/ Lead Attachment Piezoelectric Polymer Multi-purpose Vibration Sensing Impact Sensing Laminated Dual Wire Lead Attached The LDT1-028K is a multipurpose, piezoelectric sensor for detecting physical phenomena such as vibration or impact. The piezo film element is laminate to a sheet of polyester (Mylar), and produces a useable electrical signal output when forces are applied to the sensing area. The dual wire lead attached to the sensor allows a circuit or monitoring device to process the signal. dimensions Dimensions in mm [inches] FEATURES * * * * * Minimum Impedance: 1 M Preferred Impedance: 10 M and higher Output Voltage: 10 mV-100V depending on Force and Circuit Impedance Storage Temperature: -40C to +70C [-40F to 160F] Operating Temperature: 0C to +70C[32F to 160F] APPLICATIONS * * * * * * * Sensing Direct Contact Force Recording Time of an Event Counting Number of Impact Events Measuring Impact Related Events Sensing Vibration using Cantilevered Beam Wakeup Switch Motion Detection LDT1-028K Piezo Sensor Rev 1 www.meas-spec.com 1 of 2 05/12/2009 LDT1-028K Piezo Sensor w/ Lead Attachment instructions Direct Impact Sensing: Using an adhesive (such as double sided tape) adhere the sensor area to a pliable pad to absorb impact with the full length protective laminate on the impact face. Apply the force (such a finger touch or hammer blow) to the sensor area. Vibration and Motion Sensing: Mount the element in a cantilever arrangement, allowing the sensing are to vibrate up and down. Add a small weight to the end of the sensor if the greater sensitivity is required. The direct adherence of the LDT1-028K to the vibrating body can detect vibration, but another piezo film sensor configuration (SDT1-028K) is available and designed for this application. The SDT1-028K is a fully shielded form of the LDT1-028K. Bending: A cantilever arrangement will allow the piezo element to be deflected and this can be used to detect a striking object when the element is flexed. It is essential that the film not be in the neutral axis of the beam. Otherwise signal cancellation can result, minimizing signal. The LDT1-028K device is unshielded by design. If shielding is required, the sensor can be enclosed in a proper environment. Metallized tapes can be used to cover the sensor but these may impede motion and subsequent output. Wire leads can be twisted or covered. Other piezo film devices such as SDT1028K are available and are shielded. The LDT1-028K is designed to cover a wide range of sensing applications. Specific sensors requiring wider dynamic range, more or less sensitivity, different area coverage, different shapes, extended life, resistance to sharp objects, and higher temperature range, etc., can be constructed to fit the applications as special orders. 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 not 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 notice to any product herein. Measurement Specialties, Inc. makes no warranty, representation or guarantee regarding the suitability of its product for any particular purpose, nor does 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 by customer's technical experts. Measurement Specialties, Inc. does not convey any license under its patent rights nor the rights of others. ordering information Description LDT1-028K w/leads SDT-028K w/leads Part Number 1-1002910-0 1-1000288-0 North America Europe Asia 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 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 Measurement Specialties (China), Ltd. No. 26 Langshan Road Shenzhen High-Tech Park (North) Nanshan District Shenzhen, China 518107Sales and Customer Service Tel: +86 755 3330 5088 Technical Support Email: piezo@meas-spec.com LDT1-028K Piezo Sensor Rev 1 www.meas-spec.com 2 of 2 05/12/2009 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: TE Connectivity: 1-1002910-0 1-1004696-0