An operator was told to control the temperature of a reactor at \(60^{\circ} \mathrm{C}\). He set the set point of the temperature controller at 60 . The scale actually indicated 0 to \(100 \%\) of a temperature range of 0 to \(200^{\circ} \mathrm{C}\). This caused a runaway reaction that overpressurized the vessel. Liquid was discharged and injured the operator. What was the set point temperature that the operator actually set? How would you prevent this problem?