weighing precipitation sensor rain [e] H3

The precipitation sensor rain [e] H3 measures rainfall and intensity. The rain [e] H3 combines the advantages of the latest weighing technology with a self-emptied precision receptacle. This he achieved a high resolution and accuracy in a much smaller total volume. Thus, the rain [e] H3 higher resolution and precision than conventional precipitation gauges with tipping bucket measuring principle and is also significantly smaller than usual vast sensors because no collector is required.

The main sensor is a high-precision load cell with overload protection. Its temperature coefficient is determined, if necessary by using a temperature sensor inside the enclosure. Triggered by tilting the receptacle pulses of the reed contact are for error correction in high rainfall intensities verwendet.Zusätzlich allows the self-cleaning mechanism of the receptacle an uninterrupted cradles.

The following values ​​measured or calculated the rain [e] H3:

►► rainfall

The rainfall is the rain [e] H3 in real time with a maximum resolution of 0.001 mm.

►► rainfall intensity the last minute

The rain [e] H3 measures six times per minute, and adds these values ​​in a moving sum on - this means that every time a new value is measured, adding this to the previous five, thus generating the new intensity value at the last minute

►► rainfall intensity since last retrieval The quantity difference since last retrieval is divided by the time since the last retrieval. If the most recent fetch s was still under 30, the intensity of the last minute is used automatically.

►► rainfall since last release quantity difference between the new and the last retrieval

►► Minimal rainfall intensity the last x minutes (RS485 interface) every minute of the value of the intensity of last minute will keep the preceding compared and the smaller of the two for x minutes.

►► Maximum rainfall intensity the last x minutes (RS485 interface) every minute of the value of the intensity of the last minute is compared with the preceding and keep the larger of the two for x minutes.

►► Variance Variance of the measurements over 4 s

The RS485 interface can be operated in the Talker or WLASCII mode.

For applications in regions with seasonal or permanent low temperatures the rain [e] H3 is available as heated version. The internal heater is divided into three parts - a 40 W heating along the inside of the collecting funnel of the rain [e] H3 melts solid precipitate a 70W ring heater for heating said collection port and a 60 W heating plate under the guard and the receptacle prevents complete freezing of the effluent. In its operating temperature of -40 ... 70 ° C, the target temperature of the funnel surface of the heated rain [e] is H3 2 ° C. Operability is continuously monitored and can be queried via the RS485 interface.

The heating can be disabled using the configuration tools rain [e] H3 Commander. In the

Factory settings is turned on the heater. The heater is powered by a separate power cable.