Watlow Series SD • 54 • Chapter 10 Profiling
Example profile
Gwen, of Smith Manufacturing needs to perform a burn-in test of their product in an environmental chamber. The
test should take the product through the following sequence:
1. Heat from room temperature to a temperature of 150°F over a 1-hour period.
2. Hold the temperature at 150°F for 2 hours.
3. Cool the temperature to 32°F as quickly as possible.
4. Once the temperature reaches 32°F, hold that temperature for 2 hours.
5. Stop controlling the temperature and allow it to return to room temperature naturally.
Use the master step chart to map out the profile.
Circle File Number: 1 2 3 4 Master Step Chart
Step 1
___ Stpt (Ptyp=ti)
Tg.SP
150 Hour 1 Min. 0 Sec. 0
Ent1: On Off Ent2: On Off Ent3: On Off
___ Stpt (Ptyp=rate) Tg.SP Rate Ent1: On Off Ent2: On Off Ent3: On Off
___ Soak Hour Min. Sec. Ent1: On Off Ent2: On Off Ent3: On Off WF.P: Yes No W.Pr
___ JL JF JS JC
___ LFil LF
___ End End: Off Hold
Step 2
___ Stpt (Ptyp=ti) Tg.SP Hour Min Sec. Ent1: On Off. Ent2: On Off Ent3: On Off
___ Stpt (Ptyp=rate) Tg.SP Rate Ent1: On Off Ent2: On Off Ent3: On Off
___ Soak
Hour
2 Min. 0 Sec. 0
Ent1: On Off Ent2: On Off Ent3: On Off WF.P: Yes No W.Pr
___ JL JF JS JC
___ LFil LF
___ End End: Off Hold
Step 3
___ Stpt (Ptyp=ti)
Tg.SP 32 Hour 0 Min. 0 Sec. 0
Ent1: On Off Ent2: On Off Ent3: On Off
___ Stpt (Ptyp=rate) Tg.SP Rate Ent1: On Off Ent2: On Off Ent3: On Off
___ Soak Hour Min. Sec. Ent1: On Off Ent2: On Off Ent3: On Off WF.P: Yes No W.Pr
___ JL JF JS JC
___ LFil LF
___ End End: Off Hold
Step 4
___ Stpt (Ptyp=ti) Tg.SP Hour Min Sec Ent1: On Off. Ent2: On Off Ent3: On Off
___ Stpt (Ptyp=rate) Tg.SP Rate Ent1: On Off Ent2: On Off Ent3: On Off
___ Soak
Hour
2 Min. 0 Sec. 0
Ent1: On Off Ent2: On Off Ent3: On Off WF.P: Yes No
W.Pr 32
___ JL JF JS JC
___ LFil LF
___ End End: Off Hold
Step 5
___ Stpt (Ptyp=ti) Tg.SP Hour Min. Sec. Ent1: On Off Ent2: On Off Ent3: On Off
___ Stpt (Ptyp=rate) Tg.SP Rate Ent1: On Off Ent2: On Off Ent3: On Off
___ Soak Hour Min. Sec. Ent1: On Off Ent2: On Off Ent3: On Off WF.P: Yes No W.Pr
___ JL JF JS JC
___ LFil LF
___ End End: Off Hold
Step 1
[~~~1] [~~~1] [Stpt] [~150] [~~~1] [~~~0] [~~~0]
[File] [Step] [Styp] [Tg;SP] [hour] [Min] [~seC]
Step 2
[~~~1] [~~~2] [Soah] [~~~2] [~~~0] [~~~0] [~~no]
[File] [Step] [Styp] [hour] [Min] [~SeC] [WF;P]
Step 3
[~~~1] [~~~3] [Stpt] [~~32] [~~~0] [~~~0] [~~~0]
[File] [Step] [Styp] [Tg;SP] [hour] [min] [~SeC]
Step 4
[~~~1] [~~~4] [Soah] [~~~2] [~~~0] [~~~0] [~Yes] [~~32]
File] [Step] [Styp] [hour] [Min] [~SeC] [WF;p] [WPr]
Step 5
[~~~1] [~~~5] [~End] [~Off]
[File] [Step] [Styp] [~End]
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