Autonomous transmitter with data logger — ARC-1
Спецификация ARC-1
Available on request
Delivery across Russia
Order phone: +7(800)777-18-50
Description
The standalone transmitter with data logger ARC1-Tube is housed in a durable stainless steel case, perfectly suited for installation in 2-inch observation wells. This device records measurements made by external sensors (e.g., level sensor) and periodically transmits the collected data via 2G, 3G, 4G, or LoRaWAN.
A high-performance battery and advanced power management provide autonomous operation for up to 10 years. KELLER offers a range of free software solutions for configuration and data processing. The simplest and most convenient way to access the collected data is through KOLIBRI Cloud.
Advantages and Features
- Battery-powered, operating time up to 10 years
- High data storage reliability thanks to built-in memory
- Durable stainless steel housing
- Protection class IP68 (data transmission underwater is not performed)
- Access to KELLER software
- Various versions available for perfect device adaptation to task conditions
Functions
- Standalone transmitter: 2G/3G, 4G, or LoRa modules
- Data logger: stores 56,000 measurement values for
energy-saving data transmission (e.g., once a day) - Interfaces: compatible with all KELLER pressure and level transmitters
- Built-in sensors: atmospheric pressure, temperature, humidity, as well as clock
Applications
- Groundwater level monitoring
- Early flood warning systems
- Tank level monitoring
- Specifications
- Overall Drawing
- Applications
Remote Data Transmission
| Data Transmission Methods | 2G: GSM, GPRS/EDGE 3G: UMTS, HSDPA optional: 4G: including 3G/2G, modules depending on country of use LoRa: modules depending on country of use (868 or 915 MHz) |
| Frequency Bands | 2G: 850, 900, 1,800, 1,900 MHz 3G: 800/850, 900 MHz/AWS: 1,700, 1,900, 2,100 MHz |
| Data Transmission Types | SMS, e-mail (POP, SMTP), FTP (active/passive) |
| Encryption Protocol | TLS v1.0 (can be activated) |
| Minimum Data Transmission Interval | One minute |
| Data Storage | 56,000 measurement values with timestamps (4 Mbit) |
| SIM Card | Micro SIM (3FF, 12 x 15 mm) |
Electrical Characteristics
|
Power Supply |
Lithium battery DD 3.9 V/35 Ah | durable connector, easy battery replacement |
| Battery Life | Up to 10 years with measurement once per hour and data transmission once per day |
Battery life may be reduced due to external influences and reception quality |
| Interface | RS485 | |
| Connector | Fischer DEE 103A054 | |
| Antenna Connector | SMA connector (female) |
Sensor Interfaces
| Digital Interfaces | RS485, KELLER bus protocol SDI-12 for third-party sensors (compatibility must be verified) |
| Inputs | 2 voltage inputs (0...5 V, 12-bit resolution, accuracy (-20…50 °C) ± 0.3 %FS, Ri > 75 kΩ) 2 digital inputs (alarm/counter), low level, Ri = 200 kΩ up to 3 V, max. once per second) |
| Minimum Measurement Interval | One minute |
| Sensor Power Supply | 3.7 V / 5 V / 12 V (switchable, 100 mA DC) |
| Compatibility | Pressure and level transducers with RS485 interface or analog output, recommended KELLER sensors: see list "Overview of device-compatible pressure and level transducers". |
Built-in Sensors
| Barometer | Measurement Range | 0.3…1.1 bar absolute pressure |
| Resolution | 0.016 mbar | |
| Accuracy (-20…50 °C) | ± 1 mbar | |
| Long-term Stability | 1 mbar/year | |
| Temperature Sensor | Accuracy (-20…50 °C) | ± 2 °C |
| Humidity Sensor | Accuracy (20…80% RH) | ± 3% |
| Clock (RTC) | Accuracy (-20…85 °C) | ± 3 ppm (± 0.26 s / day) |
Operating Temperature Range
| Operating Temperature | -20…50 °C | optional -30…50 °C |
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