Applications: Beam-type vibration sensors for vehicle alarms, Solid state switches for counters, Momentary closure type switches

　　Description: The ‘L’ in LDT Series stands for ‘laminated’ sensor. Typically, a 0.005” (125μm) polyester layer is laminated to a 28 μm or 52μm piezo film element. When used in a ‘bending’ mode, laminated film elements develop much higher voltage output when flexed than a non-laminated DT elements series. The neutral axis is in the laminate instead of in the film so the film is strained more when flexed. The capacitance is proportional to the area and inversely proportional to the thickness of the element. Piezo film sensors LDT elements are available in a variety of lead attachment options. For significantly increased sensitivity, the LDTM-028K (M-Mass) combines an LDT0-028K form factor with the addition of a 0.72 gram round mass. The LDT1, 2 and 4 have 12” of 26 gauge twisted pair wire. The LDT0-028K and LDTM-028K with solder tabs can be soldered directly to a PCB with a reasonable level of care. Piezo film cannot withstand high temperatures (>80°C), and therefore soldering of the pins to a PCB must be done quickly. A heatsink clamped to the interface area between the film and the crimps will take the heat away from the film. Pre-tin the PCB and then quickly solder the sensor to the board. Do not allow the soldering iron to touch the film, and do not use a dwell time of over 5 seconds on the pins. Low temperature solders can also be used. For tightly tolerance sensitivity requirements, please consult Measurement Specialties for techniques used to control variations of boundary conditions in production.

　　Features:

　　The ‘L’ in LDT stands for ‘laminated’ sensor
　　When used in a ‘bending’ mode, laminated film elements develop much higher voltage output than a non-laminated DT elements series
　　Available in a variety of lead attachment options
　　LDT0-028K and LDTM-028K with solder tabs can be soldered directly to a PCB with a reasonable level of care

　　典型應用: 振動報警傳感器，固態(tài)開關計數(shù)器，瞬時閉合式開關

　　產(chǎn)品描述:

　　"L"在LDT系列中代表聚酯薄膜基片，通常是把0.005”（125μm）的聚酯薄膜和28 μm 或 52μm的壓電薄膜層壓而成。在彎曲壓電薄膜時，帶層壓基片的薄膜元件比不帶層壓基片的DT系列元件產(chǎn)生更高的電壓輸出。LDT系列的中性軸在聚酯基片上，而不在壓電薄膜上，因此彎曲時薄膜的張力更大。電容與元件面積成正比例，與元件厚度成反比例。傳感器有多種引線可供選擇。為大幅度提高靈敏度，LDTM-028K（M代表質(zhì)量塊）在LDT0-028K上外加0.72克的圓形質(zhì)量塊。LDT1，2和4 帶有12"長的26號雙絞線。LDT0-028K和LDTM-028K帶有焊接引腳，可直接焊接到PCB上。元件不能承受高溫（> 80°C），因此焊接需要迅速完成。夾在壓電薄膜和連接頭連接處的散熱器能迅速把熱量帶走。提前給插針上錫，然后迅速焊接到電路板上。不要用烙鐵接觸壓電薄膜，焊接時間也不能超過5秒鐘�？捎玫蜏睾附�。對于需要高靈敏度的應用，請聯(lián)系我們獲得技術支持。

　　特點:

　　L在LDT中代表層壓聚酯薄膜基片
　　層壓薄膜元件在被彎曲時比非層壓的DT系列產(chǎn)生更高的電壓輸出
　　帶有焊接引腳的LDT0-028K和LDTM-028K可直接焊接到PCB上

　　LDT系列傳感器更多技術參數(shù)及規(guī)格書下載請瀏覽：http://tcmtest.cn/sensors/118.html

　　北京賽斯維測控技術有限公司產(chǎn)品咨詢熱線：010-84775646，84775648。