Tipping bucket rain gauge, area 400 cm2, for temperatures from +4 °C to +60 °C; resolution on request when ordering 0.1 – 0.2 or 0.5 mm. Output contact normally closed.
Rain gauge with tipping bucket, area 400cm2, for temperature range -20°C (heated version)... +70°C.
|The Sensor measures:||Rain (rain gauge)|
The HD2013 is a reliable and sturdy tipping bucket rain gauge, built entirely from corrosion 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.
The rain gauge is formed by a metal base on which a tipping bucket is set. The rain collector cone, xed to the aluminium cylinder, channels the water inside the tipping bucket: once the prede ned level is reached, the calibrated bucked rotates under the action of its own weight, discharging the water. During the rotation phase, the normally 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 rotation between one bucket’s section and the other. The number of impulses can be detected and recorded by a data logger such as the HD2013-DB Delta OHM or by a pulse counter.
A removable lter 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 a better water ow, the collecting cone is treated with a non-adherent product.
You can install the bird deterrent on the rain gauge, formed by 8 tips of dia. 3 mm and high 60 mm. (Optional Accessory)
Upon request the rain gauge can be supplied already calibrated at 0.1 - 0.2 or 0.5 mm of rain per tip of the bucket: the calibration value is shown on the instrument label.
The instrument must be installed in an open area, away from buildings, trees, etc., ensuring the space over it is free from all objects which could obstruct rain measurements, and in an easily accessible position for the lter to be cleaned 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.
For ground installation, three adjustable support feet, so that the instrument can be levelled correctly, and holes for xing to the oor have been provided.
For raised installations, a collar to be fastened to the base of the instrument, and on which the support staff must be inserted, is provided. The staff may end with either a ange so that it can be xed to the oor, or a tip to be driven into the ground.
For the tipping device to function correctly and so for the measurement to be correct, it is important that the instrument is placed perfectly levelled. The base of the rain gauge is tted with a bubble level.
For installation, unscrew the three screws at the base of the cylinder that supports the water collector cone.
Verify lter cleanliness periodically; check that there is no debris, leaves, dirt in the lower lter or anything else that might obstruct the owing of water. Check that the tipping bucket contains no deposits of dirt, sand or any other obstruction. If necessary, the surfaces can be cleaned with non aggressive detergent.