In a message dated 2/7/01 10:53:43 AM US Eastern Standard Time, [log in to unmask] writes: > Technetters, > > Does anyone have experience using the Temprobe thermocouples for profiling > in a reflow oven? We have recently purchased 4 of these and after initial > profiles were run, the profile plot showed very jagged lines compared to > previous profiles run using "soldered-in" thermocouples. Howard- In regard to the "jagged " lines, I experienced in a past life that the use of "temporary" probes exhibit this phenomenon if they are not attached to the PCB in such a way that the movement of the conveyor isn't reflected in the readout - indicating the temp probe is not maintaining constant contact with the PCB surface. my two cents worth Pat Kane CSL > when using the same recipe and test points on the PCBA, the max rising > slope and total time above had risen well above our standards. The lines > on the graph for the four test points are relatively far apart. > > We are using a Vitronics XPM 820 ten zone oven in air, and the SlimKIC > Transmitter/Data Logger. The thermocouple tips are carefully placed on > the desired soldered leads of a soldered (previously) board. Did the > solder with the soldered-in thermocouples inhibit the rate and amount of > thermal energy transfer that much? Any suggestions or knowledge regarding > the Temprobes will be greatly appreciated. > > Howard Watson > AMETEK/Dixson > --- --------------------------------------------------------------------------------- Technet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt delivery of Technet send the following message: SET Technet NOMAIL Search previous postings at: www.ipc.org > On-Line Resources & Databases > E-mail Archives Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------