As a digital-only version of the original SunSentry™, the SunSentry 20 features an AC power input inside the main enclosure instead of a separate AC pull box. Specifically designed to support the irradiance and weather reporting needs of utility-scale solar farms, this solar operational meteorological (met) monitoring station provides weather reporting data for a wide variety of applications.
The SunSentry 20 establishes a new chapter of met station design and ease of use. Each station is standardized, stocked, follows the industry requirements of IEC 61724-1:2021, and exceeds IEC 61000-4-5 Class 4 surge immunity levels. Station installation is made easy via pile-mountable hardware, bulkhead connectors, and the renowned SunSentry web user interface (UI).
Note: Some of the SunSentry 20 images are shown with optional mounting hardware, solar panels, and sensors that are sold separately.
The two bulkhead-mounted, five-pin M12 connectors provide two independent communications channels. One channel supports the met tower sensors, whereas the other channel supports the solar panel array sensors.
| Operating Temperature | -20° to +60°C |
| Processor | CR1000Xe (For CR1000Xe Measurement and Control Datalogger specifications, refer to the CR1000Xe product page.) |
| Power Monitoring | Batt, AC |
| Power Input | 90 to 264 Vac |
| Maximum Power for Sensors | 100 W |
| Battery Backup | Up to 55 Ah |
| Enclosure Material | 304SS |
| Enclosure Rating | IP66 |
| Lockable Box | Requires included key tool to open |
| Battery-Backed Data Logger | The data logger is battery backed while external power is disconnected. |
| Battery-Backed Main Met Station | The system and sensor power are battery backed while external power is disconnected for a minimum of three days (UPS version only). |
| Enclosure Dimensions | 60 x 50 x 20 cm (23.62 x 19.69 x 7.87 in.) |
| Enclosure Weight | 15.88 kg (35 lb) |
| CR1000Xe Dimensions | 23.8 x 10.1 x 6.2 cm (9.4 x 4.0 x 2.4 in.); additional clearance required for cables and wires |
| CR1000Xe Weight | 0.86 kg (1.9 lb) |
Memory |
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| Total Onboard | 128 MB of flash + 4 MB battery-backed SRAM (A 2 GB SD card is included.) |
| Data Storage | 4 MB SRAM + 72 MB flash (extended data storage automatically used for auto-allocated data tables not being written to a card) |
| Data Storage Expansion | Removable microSD flash memory, up to 16 GB |
Power Source |
|
| AC Voltage Range | 100 to 240 Vac, 15% to +10% |
| DC Voltage Range | 110 to 250 Vdc, 18% to +40% |
| Frequency Range (fN) | 50 to 60 Hz, ±10% |
UPS Battery |
|
| Voltage Range | 24 to 27.1 Vdc (2 x 12 Vdc, nominal) |
| Battery Type | Flooded/AGM |
The SunSentry 20 is digital, RS-485 compatible only.
The SunSentry 20 supports a single sensor array in addition to a standard array of met sensors. Adapters must be used with Campbell Scientific's RS485CBL system. Sensors must be daisy-chained to the SunSentry 20 for fast, simple installation.