Information

The program calculates the relative humidity according to the readings of dry and wet thermometers of a psychrometric hygrometers types VIT-1, VIT-2 manufactured by Shatlygin & Co. LLC at different speeds of aspiration.

The calculation is made in accordance with GOST R 8.811-2012 "State system for ensuring the uniformity of measurements. Psychrometric tables."

Additionally, microclimate analysis is carried out according to the Scofield-Sterling diagram and according to GOST 30494-2011 "Residential and public buildings. Microclimate parameters in rooms".

Journal

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About the device

Psychrometric hygrometers of the VIT type are intended for measurements of relative humidity of air and ambient temperature in rooms.

The principle of operation of hygrometers is based on the determination of the relative humidity of the environment by the difference between the readings of "dry" and "wet" thermometers using a psychrometric table.

Structurally, the hygrometers consist of a plastic housing, in which two thermometers are installed - "dry" and "wet". On the back of the case there is a plastic tank (feeder), necessary for humidification of the "wet" thermometer by means of a wick. Next to the thermometers on the body of the hygrometers is a psychrometric table calculated for an aspiration rate of 0.5 to 1 m/s.

The value of relative humidity is defined in this table as the value that is at the intersection of the row that corresponds to the readings of the "dry" thermometer, and the column that corresponds to the difference between the readings of "dry" and "wet" thermometers (according to GOST 8.811 -2012).

Shatlygin & Co. Ltd. produces hygrometers in two versions - VIT-1 and VIT-2, which differ in the ranges of temperature and relative humidity and as a consequence - the scope.

Dimensions of our VIT:

The advantages of our VIT:

The plastic feeder eliminates the problem of its breakage during transportation and operation;
Clean laconic design without unnecessary color accents will suit any type of room;
Reduced size and weight;
Own, specially developed online service facilitating work with the device, keeping a log of measurements, and providing many other useful information;
Possibility of determining the relative air humidity at aspiration speeds less than 0.5 m/s without additional blowing devices;
Real measurement error at the level of the most accurate existing electronic thermo-hygrometers with a longer calibration interval and a significantly lower price;
The design of the upper storage tank allows the connection of the thermometric liquid column without any problems;
At the end of the shelf life, it is more convenient for disposal and attractive for plastics processors due to the absence of unnecessary dissimilar materials in the design;