iv
Figures
Figure 1 9140 Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2 9140 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 3 Inserts available for the 9140 block assembly . . . . . . . . . . . . . . 15
Figure 4 Controller Operation Flowchart . . . . . . . . . . . . . . . . . . . . . 22
Figure 5 Well temperature fluctuation at various proportional band settings . . . 27
Figure 6 Serial Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Figure 7 Typical Heating Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 8 Typical Cooling Rate. . . . . . . . . . . . . . . . . . . . . . . . . . . 41