Electronic Components Datasheet Search |
|
MS5405-BM Datasheet(PDF) 5 Page - Intersema Sensoric SA |
|
MS5405-BM Datasheet(HTML) 5 Page - Intersema Sensoric SA |
5 / 8 page DA54XX_011 May 9th, 2007 5 000054xx280 ECN 927 APPLICATION INFORMATION GENERAL The MS54XX is a miniaturised absolute pressure sensor series which has been designed for surface mounting applications. Its main advantages are the high reliability of the semiconductor sensor and a design which makes it suitable for applications requiring small-scale and cost-efficient solutions. The sensor element of the MS54XX consists of a micromachined silicone membrane with Pyrex glass wafer- bonded under vacuum to the backside for reference pressure. Implanted resistors make use of the piezo- resistive effect to sense pressure applied to the membrane. The sensor is mounted in a special process allowing best-offset stability making the part suitable for direct PCB assembly. Typical applications for this miniaturised pressure sensor MS54XX are altitude measurements and the measurement of atmospheric reference pressure in medical and industrial equipment as well as in automotive and household applications, consumer electronics and pneumatics. Full Scale Pressure High Sensitivity Versions (MS54XX-AM) High Linearity Versions (MS54XX-BM) 1 bar Variometer, Altimeter, Barometer High End Altimeter, Medical Instrumentation 5 bar Diving computers labelled 250 m 7 bar Electronic Scale Divers Watch, Tire Pressure, High End Electronic Scale 12 bar Pneumatic Brake, Diving Computer HUMIDITY, WATER PROTECTION The MS54XX carries a anticorrosive and antimagnetic stainless steel protection cap filled with silicone gel for enhanced protection against humidity. The properties of this gel ensure function of the sensor even when in direct water contact. This feature can be useful for waterproof watches or other applications, where direct water contact cannot be avoided. Nevertheless the user should avoid drying of hard materials like for example salt particles on the silicone gel surface. In this case it is better to rinse with clean water afterwards. Special care has to be taken to not mechanically damage the gel. Damaged gel could lead to air entrapment and consequently to unstable sensor signal, especially if the damage is close to the sensor surface. The metal cap is fabricated of special anticorrosive stainless steel in order to avoid any corrosive battery effects inside the final product. The MS5401-BM are qualified referring to the ISO Standard 2281 and can withstand a pressure of 11 bar in salt water. The concentration of the see water used for the qualification is 41 g of see salt for 1 litre of DI water. The MS5405-BM and the MS5407-AM did also pass the salt-water test with a pressure capability of 26 and 21 bar respectively. For underwater operations as specified in ISO Standard 2281 it is important to seal the sensor with a rubber O- ring around the metal cap. Any salt water coming to the contact side (ceramic and pads) of the sensor could lead to permanent damage. Especially for "water-resistant 100 m" watches and for diving computers, it is recommended to provide a stable mechanical pusher from the backside of the sensor. Otherwise the overpressure might push the sensor backwards and even bend the electronic board on which the sensor is mounted. LIGHT SENSITIVITY The MS54XX is sensitive to sunlight, especially to infrared light sources. This is due to the strong photo effect of silicon. As the effect is reversible there will be no damage, but the user has to take care that in the final product the sensor cannot be exposed to direct light during operation. This can be achieved for instance by placing mechanical parts with holes in such that light cannot pass. |
Similar Part No. - MS5405-BM |
|
Similar Description - MS5405-BM |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |