

DIGITAL SOLUTIONS
RSTAR Affinity Data Logger
The RSTAR Affinity Data Logger is designed to connect a variety of field analog and digital sensors to the RSTAR Affinity web-based Dashboard for data management.
Overview
Overview
Each RSTAR Affinity Data Logger can be configured to support up to five instruments of varying types.
Instrument and data logger configuration is mediated through secure and authenticated Bluetooth (BLE) via the RSTAR Affinity Field Utility mobile app. Instrument readings are communicated via low-power wide area network (LPWAN) through an RSTAR Affinity Gateway. LPWAN protocols supported include LoRaWAN for long-range outdoor applications (up to 15 km).
Standalone data logging is supported by the syncing of instrument data by local authenticated download in the RSTAR Affinity Field Utility app and a CSV file can also be downloaded for instant data verification for locations of limited cellular coverage.
Product Features
- Five modules configurable for specific instrumentation signal types
- Compartmentalized design makes maintenance simple
- Self-locating via Bluetooth for easy set-up
- IP67 rated to perform in -40˚C to 60˚C temperatures
Features and benefits
Features and benefits
RSTAR Affinity Data Logger physical specifications
| Item | Specification |
|---|---|
| Dimensions | 159 mm (L) x 120 mm (W) x 87 mm (H) (enclosure only) 163 mm (L) x 185 mm (W) X 87 mm (H) (enclosure + wall mounting) |
| Total Mass | 500 g to 550 g |
| Housing Material | PBT |
| Ingress Protection Marking | IP67 rated |
| Mounting Options | Wall, pole, mounting kit available |
| Antenna Options | External: +3 dBi and +5.8 dBi (N type connector) |
General specifications
| Item | Specification |
|---|---|
| Temperature Operating Range | From -40°C to 60°C |
| Lifespan | 10-year service life |
BLE (Bluetooth Low Energy) radio specifications
| Bluetooth | BT 5.0 single mode |
| Frequency | 2.402 – 2.480 GHz |
| Raw Data Rates | 125 kbps, 500 kbps, 1 Mbps, 2 Mbps |
| Maximum Transmit Power | +8 dBm |
| Low Power Listen Mode | Continuous |
LORA (Long Range) radio specifications
| Operating Regions | LoRaWAN US915 LoRaWAN EU868 LoRaWAN EU433 LoRaWAN AS923-1/2/3/4 LoRaWAN AU915Refer to RST for the best frequency for your region. |
| Protocols | LoRaWAN® 1.0.1 |
| Range | Up to 15 km (at 900 MHz) in open country, depending on frequency and antenna |
Power specifications
| Battery voltage | 3.6V |
| Number of Cells | 3 primary battery cells |
| Battery Cell Size | D |
| Recommended Battery Cell | Saft LSH20 |
| Battery Nominal Capacity | 13.0 Ah @ 20°C per cell |
| Battery Life Expectancy (Hourly readings) | 1 x VW Piezometer @ 20°C = ~10 yrs 100 Segment ShapeArray @ @ 20°C = ~3 yrs |
RS-485 interface specifications
| Part ID | IIM-RS-485 Contact RST for full sensor list compatibility |
| Supply Power | 12 VDC up to 300 mA |
| Protocols Supported | RS485 |
| Serial Data Rate | 9600 to 115200 Baud configurable through RSTAR Affinity digital suite. |
| Serial Port | Half-duplex |
| Protection | 1500 VDC isolation on the 12 V 3000 VDC isolation on TTL signals Isolation ICs are EN62368-1 certified |
Vibrating wire specifications
| Part ID | Vibrating Wire + IIM-VW-VW Vibrating wire pairVibrating Wire + IIM-VW-TH Thermistor pair |
| Excitation Voltage | 5 V |
| Resonant Frequency Measurement Range | 300 Hz to 7,000 Hz |
| Resonant Frequency Resolution | 0.11 Hz (1 part in 65,000) |
| Resonant Frequency Accuracy | ± 0.7 Hz (0.01% FS) |
| Protection | Tran 1500 VDC isolation on the 5V 3000 VDC isolation on TTL signals Isolation ICs are EN62368-1 certified ESD protection to ±2KV silent protection for instrument ports |
Thermistor specifications
| Item | Specification |
|---|---|
| Part ID | Thermistor pair + IIM-TH-TH Thermistor pairVibrating Wire + IIM-VW-TH Thermistor pair |
| Measurement Range | 0 Ohm to 196 mOhm |
| Measurement Resolution | 0.183 Ohm |
| Accuracy | ± 0.1°C |
| Protection | 1500 VDC isolation on the 12 V 3000 VDC isolation on TTL signals Isolation ICs are EN62368-1 certified |
Resources
Resources
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