Grant cooling circulators provide a source of precision cooling for most low temperature applications. They are suitable for use in both open and closed loop circulation (i.e. remote vessel, open or closed). R4 & R5 models include a drain tap and a relay to control refrigeration on/off.
Grant thermostats can be associated with two refrigeration units to cover all needs, from the most basic to the most sophisticated. The refrigeration unit can be switched off independently of the heating circulator to allow heating only applications. All the refrigeration base units can be used up to a maximum temperature of 100 °C.
Caution: Note: Cooling capacity at +20; 0; −10; −20; −30; −40 and −47 °C.