Hi Lewis, All hot air gun have their sensors. Generally, the probe is located in the center of hot air outlet. In 7711/21, the temperature is not mandatory. There is a way to confirm the temperature with a piece of paper. You can find it in followed steps. Best Regards, James Liu 刘春光 Director, Technology & Standardization 技术与标准总监 IPC China 上海市长宁区延安西路1088号2303室 Suite 2303,#1088 West Yan'an Rd., Changning, Shanghai 200052 PRC Tel: +86 21 5497 3435 Fax: +86 21 5497 3437 MP: +86 136 0133 3491 [log in to unmask]<mailto:[log in to unmask]> www.ipc.org.cn<http://www.ipc.org.cn/> 2010年3月份上海 ________________________________ 发件人: TGAsia [[log in to unmask]] 代表 Lewis Liu [[log in to unmask]] 发送时间: 2010年3月2日 12:03 收件人: Listserv TGAsia 主题: [TGAsia] measure the hot air temperature method Hi,All: In IPC 7721 and 7711 document just mentioned the hot air temperature is approximately 425℃ and adjust it if necessary ,but it didn’t define the test method to get the real temperature. Do you have the relative solutions? Thanks, Lewis Liu (刘定豪) Engineering Department Failure Analysis laboratory Supervisor Tel:+86<tel:+86> -25- 52728710 Cell:+86 -25 -13851527451 Mail: [log in to unmask]<mailto:[log in to unmask]> Kimball Electronics (Nanjing) Co.,Ltd ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________