The latest weighing technology in a compact package, combined with a self-emptying, monolithically manufactured precision rocker, enables the rain[e]one to achieve outstanding resolution and accuracy. This weighing precipitation sensor is ideal for setting up new measurement networks or supplementing existing ones.
The rain[e]one precipitation sensor measures precipitation amount and intensity. The rain[e]one combines the advantages of the latest weighing technology with a self-emptying, monolithic precision tipping bucket. This achieves high resolution and precision with a significantly smaller overall volume. The main sensor is a high-precision load cell with overload protection. Its temperature coefficient is determined, if necessary, using a temperature sensor inside the housing. The reed contact pulses triggered by tipping the tipping bucket are used to correct errors during periods of high precipitation intensities. In addition, the self-emptying mechanism of the tipping bucket allows for uninterrupted weighing.
The rain[e]one measures or calculates the following values:
► Rainfall amount (pulse or analog output) The rain[e] provides the rainfall amount in real time via the pulse or analog output with a maximum resolution of 0.01 mm.
► Rainfall intensity of the last minute (SDI-12 or RS485 interface) The rain[e] measures six times per minute and adds these values up in a moving sum - this means that every time a new value is measured, it is added to the previous five and thus generates the new intensity value of the last minute.
► Rainfall intensity since last retrieval (SDI-12 or RS485 interface) The difference in rainfall since the last retrieval is divided by the time since the last retrieval. If the last retrieval was less than 30 seconds ago, the intensity from the last minute is automatically used.
► Rainfall since last retrieval (SDI-12, RS485 interface or Modbus RTU) Difference between the new and the last retrieval
► Minimum precipitation intensity of the last x minutes (SDI-12, RS485 interface or Modbus RTU) For x minutes, every minute the value for the intensity of the last minute is compared with that of the previous minute and the smaller of the two is kept.
► Maximum precipitation intensity of the last x minutes (SDI-12, RS485 interface or Modbus RTU) For x minutes, every minute the value for the intensity of the last minute is compared with that of the previous minute and the higher of the two is retained.
► Average intensity of the last x minutes (SDI-12, RS485 interface or Modbus RTU) Counts the amount of precipitation over x minutes in 0.01 mm steps and divides the result by the x minutes.
► Variance (SDI-12, RS485 interface or Modbus RTU) of the measured values over 4 s
The device is characterized by the following features:
- good resolution and precision
- Modbus RTU, SDI12, RS485
- compact and robust design with very low weight
- All-metal housing, weatherproof and durable
- high connectivity through diverse interfaces
