UL uses J or K type as well, but T type can be also used if better accuracy is needed. However how to secure the thermocouple without affecting measurement result is a challenge needs to face.
Thanks again and best wishes!! Ben.
(Send from blackberry +886-987-587-021)
----- Original Message -----
From: Chris.Katzko
Sent: 03/03/2010 10:52 AM ZE8
To: [log in to unmask]
Subject: Re: [TGAsia] 答复: measure the hot air temperature method
Hi All
Normally a J or K type thermocouple is suitable for the temp range, an embedded wire thermocouple plate can be used.
Regards
C.B. Katzko
Research + Development
Meadville Group
by Blackberry
----- Original Message -----
From: James Liu [[log in to unmask]]
Sent: 03/01/2010 10:31 PM CST
To: [log in to unmask]
Subject: [TGAsia] 答复: measure the hot air temperature method
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
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