Monitoring device

This monitoring device monitors abnormalities of a cooling device that comprises: a refrigerant tank that accommodates, in the interior thereof which is a closed space, a first refrigerant for removing heat from electronic equipment; a dry cooler that uses air to cool, in the exterior of the refrigerant tank, a second refrigerant which has exchanged heat with the first refrigerant; and a circulation pump that causes the second refrigerant to circulate between the refrigerant tank and the dry cooler through a second refrigerant line, the monitoring device comprising an acquisition unit that acquires at least one set from among the temperature of the second refrigerant which flows into a heat exchanger in the dry cooler and the temperature of the second refrigerant which flows out from the heat exchanger as well as the temperature of air which flows into the heat exchanger and the temperature of air which flows out from the heat exchanger, and a determination unit that determines whether there is an abnormality