BRANNAN SLING PSYCHROMETER/ WHIRLING HYGROMETER

Hygrometers are instruments for measuring the water content of the air in Percentage Relative Humidity ( % RH) . They can also be used to calculate the Dew Point when used with the relavent tables. We offer a selection of hygrometers including wet and dry bulb masons hygrometers, hair hygrometers and whirling hygrometers. Whirling hygrometers, also known as sling psychrometers or aspirated hygrometers, employ the " wet " and " dry " bulb principle to determine % RH. They are designed to be rotated by hand to provide adequate and constant ventilation of the bulbs. The spirit thermometer tubes used in these hygrometers have a blue coloured LO-tox™ filling which has a similar accuracy and better legibility than the traditional mercury filling. This traditional model has a folding handle and is available in its original design with mercury tubes or with the more environmentally friendly LO-tox™ blue spirit filled tubes Protection is provided by a canvas carry case. Size: 237mm x 143mm x 29mm Tube Filling Range Product No Mercury 0 + 50 ° C only 13/ 644/ 2 LO-tox™ Spirit 0 + 50 ° C only 13/ 744/ 2