ALTA wireless AC Current Meters measure the RMS current of an alternating current (AC) system using a current transformer (CT) that wraps around the "hot" wire of a two wire (hot, common, ground(optional)) power system. The sensor reports Minimum RMS current, maximum RMS current, average RMS current, and amp hours to the iMonnit system. The iMonnit system is capable of generating watt hour or kilowatt hour readings as well.
WARNING: This AC current meter is for monitoring AC voltage only. Do Not Use with DC voltage.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
AC Current Meter Specifications |
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| Accuracy | +/- 2% @ 2 to 150 Arms, +/- .4 Arms @ < 15 Arms |
| Current Transducer Frequency Range | 50 – 100 Hz |
| Absolute Max CT Current | 200 Amps RMS (Arms) |
| Maximum Accurate CT Current | 150 Arms |
| Calibrated Accuracy with Appropriate Offset | +/- 1% @ 2 to 150 Arms, +/- .2 Arms @ < 2 Arms |
| Offset Limits | -1.27 to + 1.27 Arms (default set to +.3 Arms) |
| Measurement Resolution | ~.1 Arms |
ALTA AA Specifications |
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| Battery Type | 2 Replaceable AA 1.5 V Batteries |
| Dimension | 4.375 in x 2.470 in x 1.12 in |
| Supply Voltage | 2.0 - 3.8 V (2 x AA 1.5V Batteries or Optional Power Supply) |
| Battery Life | At 1 hour heartbeat setting, included AA batteries will typically last 6-8 Years. ** |
| Max Operating Temperature Using AA Alkaline | -18°C to 55°C (0°F to 130°F) |
| Max Operating Temperature Using AA Lithium | -40°C to 60°C (-40°F to 140°F) |
| Optimal Battery Operating Temperature | +10°C to +50°C (+50°F to +122°F) |
| Enclosure Material | ABS |
ALTA 868 MHz Specifications |
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| Operating Frequency | 868 MHz Operating Frequency |
| Certifications | CE Certified. Tested and found to comply with: EN 300 220-2 V3.1.1 (2017-02), EN 300 220-2 V3.1.1 (2017-02) and EN 60950. |
| Security | Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC) |
| Device Range | Device Range Up to 1,200 ft. non-line-of-sight, wireless device range* |
