detecting {TAIL ~ a temperature} of {HEAD ~ said refrigerant} at a refrigerant flow passage where the refrigerant passes; and 
detecting { TAIL ~ a temperature } of { HEAD ~ said refrigerant } at a refrigerant flow passage where the refrigerant passes ; and
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH