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Introduction
ADS-270 is an ultra low power, battery powered end node for the LoRa network. The unit is available for the 433MHz, 868MHz and 915MHz bands. It incorporates two inputs, one digital with pulse counter capability and one analog, as well as multiple excitation options for powering transducers. A D-size Lithium Thionyl battery provides autonomous operation for over 10 years.
SDI-12 Serial Bus
SDI-12 is an asynchronous, ASCII, serial communications protocol that was developed for intelligent sensor instruments that typically monitor environmental, structural engineering and precision agriculture data. The communication is achieved by digital communications. The addressing system allows data recorder to communicate with several microprocessor-based sensors over a single line. ADS-270 is compliant to the SDI-12 Standard Version 1.2 and supports extended commands for sensor configuration, in terminal mode. ADS-270 can collect data from several SDI-12 sensors for a total amount of 8 measurement channels.
RS-485, MODBUS
ADS-270 supports acquisition from sensors with RS-485 interface, using the popular MODBUS protocol (RTU & ASCII). Up to 8 measurement channels from several sensors are supported.
Transducer excitation
The unit provides multiple excitation options for measuring transducers.
Applications
- Weather conditions & environmental monitoring
- Water/wastewater level & quality
- Structural engineering
- Precision Agriculture
- Smart City
- Oil & Gas
- Building Management
- Factory Automation
- Power Grid
Ordering Codes
| Code | Description |
|---|---|
| ADS-270-8 | LoraWAN end node, 868 MHz Band |
| ADS-270-9 | LoraWAN End node, 915 MHz Band |
| ADS-270-4 | LoraWAN End node, 433 MHz Band |
Specifications
| Other | |
|---|---|
| Communication | |
| Sensor excitation | |
| Serial Bus features & options | |
| Configurable Input (IN1) | |
| Processing unit | |
| Consumption | |
| Power supply | |
| Supply voltage | Internal: 3.6V, 13Ah Lithium Thionyl battery (Saft LSH-20 recommended) External: 5 VDC, regulated |
| Stand by | 10μA max.at 3.6V |
| Communication | 868 MHz Band: Transmit: average 40mA, 915 MHz Band: Transmit: average 122mA, 433 MHz Band: Transmit: average 33mA. |
| Measurement | Up to 1A at 3.6V (according to sensor supply requirements) |
| System controller | Ultra low power ARM 7 MCU |
| Configuration memory | 16 KByte EEPROM |
| Digital input | 1, dry contact, 0-30VDC |
| Pulse counter | 1, 2KHz. |
| Analog input | 1, Range: 0-1V, 12 bit resolution. |
| SDI-12 | 8 channels, up to 3 sensors, Support of extended commands in Terminal mode |
| RS-485, MODBUS | 8 channels, up to 3 sensors, MODBUS RTU & ASCII protocol |
| RS-485 | Sensors with RS-485 interface and proprietary protocol (OEM versions only) |
| Output 1 | 12VDC/250mA |
| Output 2 | 5VDC/200mA |
| 863-870 MHz Band | Uplink data rate (TX) up to 300Kbps with FSK modulation, Max output power +14dBm |
| 902-928 MHz Band | Uplink data rate (TX) up to 300Kbps with FSK modulation, Max output power +18.5 dBm |
| 433.050 MHz to 434.790 MHz Band | Uplink data rate (TX) up to 300Kbps with FSK modulation, Max output power +10 dBm |
| Transciever | 433 MHz Band & 868 MHz Band: RN2483 (Microchip), 915 MHz Band: RN2903 (Microchip) |
| Antenna connector | SMA Jack |
| Serial interface | USB, up to 115 kBit/s |
| Temperature | -40°…65°C, operating |
| Indications | LED, Operation status |
| Dimensions | 124 x 79.5 x 70 mm (with cable gland) |
| Protection | IP66, IP68 |
| Weight | 0.3 kg (without battery) |
