ALTA® Wireless AC Current Meters and ALTA® Industrial Wireless Three-Phase Current Meters continuously measure the alternating current root mean square (AC RMS) using current transformers that clip around the wires in single-phase and three-phase power systems.
Key Features
- Three current transformer sizes available for single-phase and three-phase systems: - 0-20 Amp, 0-150 Amp, 0-500 Amp
- Measures: - Minimum, Maximum, and Average in Amp-RMS
- Current Accumulation in Amp-hours - Resolution: 0.1 - 0.3 Amp-RMS
- Accuracy:
- Uncalibrated: ± 2% (typical)
- Calibrated: ± 1% (typical)
- Configurable thresholds for critical condition monitoring
- Industrial 150 Amp and 500 Amp options come standard with a detachable lead
Principles of Operation
ALTA Wireless Current Meters measure one or three AC RMS signals produced by current transformers (CTs). The analog current measurements are periodically converted to digital current measurements based on a user-configurable measurement interval. The meters report the minimum, maximum, and average current per CT, and the accumulated current over time at a user-configurable reporting interval or Heartbeat. On every Heartbeat, the meter reports its recorded measurements to the gateway, making the data available in iMonnit or other approved data services. ALTA Three-Phase Current Meters are only available in the Industrial version. Single-phase current meters can be calibrated for improved accuracy. Also, iMonnit can scale the accumulated current into kilowatt-hours for power monitoring.
Example Applications
- Current monitoring
- Current usage
- Amperage monitoring
- Amp-hour metering
| Brand | |
|---|---|
| Brand | Monnit Corporation |
| Power & Battery | |
|---|---|
| Power Source | Battery Powered |
| Networking & Connectivity | |
|---|---|
| Connectivity Technology | Wireless |
| General Features | |
|---|---|
| Operating Frequency | 900 MHz |
| Frequency Range | 433 MHz to 868 MHz |
| Manufacturer | Monnit Corporation |