GHM Delta OHM HD215, Руководство по эксплуатации

Страница: 3 / 18

HD2015
- 3 -
V1.2
1 INTRODUCTION
HD2015 is a reliable and sturdy bucket rain gauge, entirely constructed of corrosion
resistant materials in order to guarantee its durability. To ensure accurate measure-
ments even with low temperature climatic conditions or during and after precipitations
of snow, a version with heating system, automatically activated around +4
°C has
been developed to prevent snow deposits and ice formations.
The rain gauge is formed by a metal base on which a tipping bucket is set. The rain
collector cone, fixed to the aluminium cylinder, channels the water inside the tipping
bucket: once the predefined level is reached, the calibrated bucked rotates under the
action of its own weight, discharging the water. During the rotation phase, the nor-
mally closed reed contact opens for a fraction of a second, sending an impulse to the
counter.
The quantity of rainfall measured is based on the count of the number of times the
bucket is emptied: the reed contacts, normally closed, open at the moment of the rota-
tion between one bucket’s section and the other. The number of impulses can be de-
tected and recorded by a data logger such as the
HD2013-DB or by a pulse counter.
A removable filter for periodic cleaning and maintenance is inserted in the water col-
lector cone so as to prevent leaves or other elements blocking the end of the hole.
For a better water flow, the collecting cone is treated with a non-stick coating.
The version with heating option HD2015R works with 12 Vdc or 24 Vdc direct voltage
( to be specified at the time of order ) and absorbs about 50 W. The heating system
is activated 4 °C.
When submitting your order , it is possible to request a bird dissuader, made of
eight 3 mm diameter spikes, 60 mm in height, to be installed on the rain gauge.