Factory tuning eliminates most overshoot and allows the bath to achieve maximum stability within 10 to 15 minutes after reaching the set temperature. Automation Another bath issue is automation. Hart offers a number of options. A manual valve adjusts the cooling power to properly balance the refrigeration against the active control of the resistance heaters. A major factor in Hart's bath performance is our heat port technology.
Some manufacturers place separate heating and cooling coils directly in the bath reservoir.
In this scheme, heat enters and exits the bath at two different physical locations. Hart improves bath uniformity and stability by reducing the heat paths from two to one. The cooling coil and the heater are sandwiched to the outside of the bath's stainless steel tank. The tank bottom becomes the heat port with most of the heat entering and exiting the bath through a single location. Other heat leaks are minimized by providing well-designed insulation around the tank.