hygrostat
(ˈhaɪgrəʊstæt)
[f. hygro- + -stat.]
= humidistat 2.
| 1915 R. C. Carpenter Heating & Ventilating Buildings (ed. 6) xx. 525 Some form of differential hygrostat..controls the wet bulb temperature with respect to the dry bulb temperature so as to maintain a constant relative humidity. 1918 [see humidistat 2]. 1937 Archit. Rev. LXXXI. p. lxxii/1 Heating and humidifying equipment are incorporated in each unit, the desired temperature and humidity being automatically controlled by thermostats and hygrostats. 1965 Bull. Entomol. Res. LVI. 265 Kitchen & Gall (1953) describe a modified Friez hair hygrostat which they used to control a humidifier for an insect breeding room. |