Heater Element Resistance Test Report
Test Overview
Conducted several on-and-off tests on heater elements at 24V, followed by switching heater elements 5 and 8 by changing their connection pins to the ADC.
Resistance Measurements (Ω)
| Heater Element |
Before Switch |
After Switch |
Ladder Test |
Difference (After-Before) |
| Element 1 |
153.09577918 |
153.11447008 |
153.83373894 |
+0.0186909 |
| Element 2 |
149.70967557 |
149.8175605 |
150.08915205 |
+0.10788493 |
| Element 3 |
157.88314236 |
157.87136021 |
157.39696467 |
-0.01178215 |
| Element 4 |
146.80153622 |
146.78826747 |
147.77923177 |
-0.01326875 |
| Element 5 |
151.80888657 |
152.2204132 |
150.44919044 |
+0.41152663 |
| Element 6 |
148.24375881 |
148.32846152 |
146.89161192 |
+0.08470271 |
| Element 7 |
144.72286546 |
144.76879963 |
145.03627875 |
+0.04593417 |
| Element 8 |
151.4564267 |
149.14240417 |
149.88675562 |
-2.31402253 |
Supporting Graphs
Attached below are the resistance-time graphs for all heater elements:
- Complete test duration graph
- Pre-switch period graph
- Post-switch period graph
- Resistance voltage graph after removing data from after power outage
Analysis & Conclusion
The switch did not physically change the resistance of the heater elements, suggesting the measurements reflect their true resistances.