A simple and compact SDI-12 Interface to convert any Tipping bucket into a ‘smart SDI-12 sensor’ that can compute daily & annual accumulation. The SDI-TB has an internal backup power source and can be programmed to compensate for heavy rainfall.
- Improved Reliability
The SDI-TB is compact and can be easily mounted inside most tipping buckets. This eliminates the need for long wires (from the tipping bucket to the SDI logger) susceptible to noise,
- Programmable Daily and annual resets
The SDI-TB has an internal RTC that can be used to automatically compute yearly and daily accumulations.
- Rechargeable Backup Power
The SDI-TB can run off its internal rechargeable backup power in case SDI power is lost. All crucial functions of the SDI-TB, like measuring rainfall and the internal RTC can run for up to 10 hours without SDI-12 power.
- Smart Sensor Compensation
The SDI-TB can be programmed to compensate for rainfall lost due to heavy rainfall rates especially when using a tipping bucket without a siphon.
- Low Power
The SDI-TB draws about 100μA and has been optimized to run on a shoe-string power budget.
- Compact Rugged, Water Resistant
The SDI-TB is compact and encapsulated in a water-resistant epoxy compound for installations
|MECHANICAL / ENVIRONMENTAL|
|Enclosure||Potted enclosure for humid environments|
|Dimensions||3 x 1.5 x 2 inches|
|Temperature||-40C to +60C|
|Connector||5 pin connector|
|Input Voltage||4v – 20v DC|
|Internal backup power run time||10 hours|
|Internal backup power charge time||~18 hours|
|Internal backup power charging current||25mA (fully discharged) to 100μA (fully charged)|
|Quiescent Current||100 μA @12v (once fully charged)|
|Protocol||SDI-12 v1.3 (SDI communication will be disabled when running off internal backup power)|