Caratteristiche Tecniche - Delta OHM HD2013 Manual Del Usuario

Morsettiera HD2013-D Connettore seriale SubD 9 poli femmina
1 - TX
2 - RX
3 - RTS
4 - CTS
5 - GND

Caratteristiche tecniche

Batteria al litio 3.6V -1Ah - tipo 1⁄2AA sosti-
Alimentazione
tuibile
Contatto NC o NO selezionabile da pro-
gramma.
Tipo di evento in registrazione Si genera un allarme (disattivabile) se il con-
tatto rimane nella condizione non stabile per
oltre 3 secondi.
Risoluzione 0.1 - 0.2 - 0.5 mm/vaschetta
128000 campioni pari a 25600mm di pioggia
Capacità di memorizzazione
con una risoluzione di 0.2mm/campione
Interfaccia PC Porta seriale RS232C isolata - 9600baud
mm o inch di pioggia parziali
Indicazioni a display mm o inch di pioggia totali
temperatura ambiente °C/°F
Range di temperatura operativa -20°C ... +60°C
Grado di protezione IP67
Software in dotazione DeltaLog6
HD2013
BUCKET RAIN GAUGE
Introduction
The HD2013 is a reliable and sturdy bucket rain gauge, built entirely from cor-
rosion resistant materials in order to guarantee its durability. So as to ensure
accurate measurement even with low temperature climatic conditions or during
and after precipitations of snow, a version with a heater which is automatically
activated around +4°C has been developed so that snow deposits and ice forma-
tions are prevented.
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 usually 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, usually closed, open at the moment of the
rotation between one bucket's section and the other. The number of impulses can
be detected and recorded by a datalogger such as the HD2013-D DeltaOhm
or by a pulse counter.
A removable filter for periodic cleaning and maintenance is inserted in the water
collector cone so as to prevent leaves or other elements blocking the end of the
hole.
For better water flow, the collector cone is treated with a teflon® paint.
The HD2013R, the version with a heater, operates using either 12Vdc or 24Vdc
voltage and uses about 35W. Heating is activated around +4°C.
When submitting your order, upon request a bird dissuader, made of 8 3mm-
diameter spikes, 60 mm in height, can be installed on the rain gauge.
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Fig. 1 Electric connection
Installation and maintenance
Upon request the rain gauge can be supplied ready calibrated at 0.1 - 0.2 or 0.5
mm of rain per commutation of the bucket: the calibration value is shown on the
3
instrument's label.
2
The instrument must be installed in an open area, away from buildings, trees,
7
etc..., ensuring the space over it is free from all objects which could obstruct rain
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measurements, and in an easily accessible position for the filter to be cleaned
5 periodically.
Avoid installation in areas exposed to gusts of wind, turbulence (for example the
top of a hill) as these may distort the measurements.
The rain gauge can be installed on the ground or raised 500 mm above the
ground. Other sizes above the ground are available on request.
Three adjustable support feet have been provided for ground installation so that
the instrument can be levelled correctly, and the holes aligned so that it can be
fixed to the floor.
For raised installations a collar has been provided which fastens around the base
of the instrument on which the support staff must be inserted. The staff may end
with either a flange so that it can be fixed to the floor, or a tip to be driven into the
ground. The various fastening systems can be seen in fig. 2.
For the tipping device to function correctly and so for the measurement to be cor-
rect, it is important that the instrument is placed perfectly level. The base of the
rain gauge is fitted with a bubble level.
For installation, unscrew the three screws at the sides of the cylinder that sup-
ports the water collector cone.
Note: a heating resistor is fitted around the cone vertex in the HD2013R version.
To disconnect the power leads, the terminal block's protection cover must be
removed and the connector plugged into the heater's leads coming from the cone
needs disconnecting.
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Fig. 2 Mechanical dimensions, and floor or ground fastening system
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