HD2016 is a rain gauge that detects the weight of the rainfall collected by a 400 cm2 inlet. The sensor is a load cell located at the base of the rainfall collecting reservoir. The signal of the load cell is processed by the internal electronic board of the rain gauge in order to output the information on the rainfall.
Many acquisition systems can be connected to the rain gauge thanks to the multiplicity of outputs available:
- RS485 with MODBUS-RTU or proprietary ASCII protocol output
- SDI-12 output
- Voltage-free pulse contact output
Delta OHM offers a wide range of data logger systems for gathering the data collected by the rain gauge. HD2016 is able to provide the total rainfall, the partial rainfall (from the last reset command or from the last reading command), the average rainfall rate in the last minute and in the last hour.
The measured rainfall is regularly saved into a non-volatile memory, which retains the information even in case of power failure.
The automatic discharge of the rainfall collected allows using a compact and lightweight structure for the installation of the rain gauge. So as to ensure accurate measurement even with low temperature climatic conditions, a version with heating which is automatically activated below +4 °C has been developed (HD2016R) so that snow deposits and ice formations are prevented. Adding anti-freeze or oil in the rainfall collecting rerservoir is not required.