dew-point recorder

dew-point recorder

[′dü ‚pȯint ri′kȯrd·ər]
(engineering)
An instrument which gives a continuous recording of the dew point; it alternately cools and heats the target and uses a photocell to observe and record the temperature at which the condensate appears and disappears. Also known as mechanized dew-point meter.
(petroleum engineering)
An instrument used for continuous measurement and recording of the dew point of a gas.