AtmosVue-HV T/RH sensor installation

The AtmosVue 30 has a temperature sensor mounted in the crossarm that is used in determining precipitation type.

An AtmosVue-HV T/RH sensor can be connected to a an AtmosVue 30 to allow the AtmosVue 30 to better identify different precipitation types, like distinguishing between mist and haze. The T/RH sensor improves the precipitation identification at temperatures near freezing and its use is highly recommended in regions where temperatures close to 0 °C are common. The T/RH sensor also allows relative humidity information to be included in data messages.

The T/RH sensor is mounted in a RAD6 6-plate radiation shield. The sensor cable has a connector that attaches to directly to the AtmosVue 30 connector panel (Connectors).

If a AtmosVue-HV is connected to the AtmosVue 30, the temperature used for assessment of precipitation type and included in data messages will come from the AtmosVue-HV instead of the temperature sensor.

WMO – No. 8, 2.1.4.1 recommends temperature measurement at a height of between 1.2 and 2.0 m above ground.

The AtmosVue-HV air temperature and relative humidity sensor connects to the HV connector. This connector has the following pin-out.

HV cable pin-out
Pin	Wire color	Description
5	Gray	12 VDC
6	Pink	SDI-12
8	Red	G