~ ~ ~
Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /var/www/custom/archive.cmdm/config.php on line 60

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /var/www/custom/archive.cmdm/config.php on line 60

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /var/www/custom/archive.cmdm/config.php on line 60

Warning: mktime() [function.mktime]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /var/www/custom/archive.cmdm/config.php on line 60

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /var/www/custom/archive.cmdm/config.php on line 61

Warning: date() [function.date]: It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected 'America/New_York' for 'EST/-5.0/no DST' instead in /var/www/custom/archive.cmdm/config.php on line 62

Deprecated: Function ereg_replace() is deprecated in /var/www/custom/archive.cmdm/article.php on line 102
超低阻值电阻器可实现精确温度控制 - China Medical Device Manufacturer
CMDM

- English | 中文

Wed, January 17th, 2018

2009年6月CMDM电子快讯 » 技术新知
超低阻值电阻器可实现精确温度控制

By: Stephanie Steward

58438.tif
医疗设备设计人员可以用厚膜不锈钢基板式电阻加热元件取代笨重的传统加热器。
电阻和电子元件供应商IRC公司 (www.irctt.com) 开发出一系列超低阻值的电阻加热元件,能够实现精确温度控制。

全新的薄膜电阻系列在该公司的WDBR系列厚膜钢基板功率电阻器的基础上开发而成,它直接在不锈钢上涂覆陶瓷介电釉。由于热梯度影响元件热传输功能的层数较少,因此该电阻能实现比常规热敏元件更快、更精确的温度控制。而且,常规加热元件上电、掉电都需要几分钟时间,与此不同,这些电阻加热器可以在几秒内升至所需温度。此外,还能在要求的时间内维持此温度,随后迅速冷却至接触安全的温度。

“热敏电阻的反应时间不足1秒,”产品经理Wilson Hayworth指出。“该产品的优势在于热容量极小。断电时无潜热。”这不仅有利于输血加温器、睡眠呼吸中止症呼吸机加湿器和消毒设备等医疗器械的温度控制,而且可以显著提高总体功效。

电阻器有平面和管状两种型号,可提供多种标准配置。据Hayworth介绍,管状元件中的非介入配件解决了密封问题,可以直接对液体进行在线加热。

不过这些灵活组件可以实现客户定制。“可以根据传统的加热器进行系统设计,也可以用这些电阻器精确设计所需的加热器,”他解释说。IRC 公司可以在不锈钢基板上定制电阻器配置,以实现特定的功能。为此,公司采用丝网印刷设计工艺代替金属成型生产特定的加热电路。

用户定制的设计要求扩大了该电阻器的用途。该元件还可作为超高功耗浪涌电阻器,实现MRI和CT扫描仪上的低通滤波器功能。另外可用于激光手术仪器预热,或在间歇期降低仪器功耗。

版权所有 © 2005-2010 医疗设计和制造OEM (CMDM) 本网站所有内容,如未获书面同意,不得以任何形式转载和节录。违反上述声明者,我方将依法追究法律责任。

本期其他技术新知

相关文章

- 主页 | 当期杂志 | 订阅 | 联系方式 | 关于我们 -©2011 汇科传讯集团 医疗设计和制造OEM 版权所有.