PR-129 WHIRLING HYGROMETER (PSYCHROMETER)

The ventilated type of hygrometer is an established, economical and a well-known method for determining the relative humidity.

It gives greater accuracy for humidity determinations and is particularly useful for measuring local differences in humidity.

There are two thermometers mounted in a case.

One thermometer bulb is exposed to the ambient air temperature, providing the dry bulb reading.

The other is kept wet with the aid of a wick and a built in water reservoir at the end of the frame, and it provides the wet bulb temperature.

The thermometers are stem engraved with lens fonts for easy reading.

Range= -5° to +50°C x 0.5°C.

It is supplied in a carrying case.