Monnit ALTA Industrial Wireless AC Current Meter - 20 Amp (900 MHz)

Experience advanced monitoring for electrical systems with the Monnit ALTA Industrial Wireless AC Current Meter. Designed to monitor RMS current non-invasively, this 20-amp device uses a current transformer that clamps around the hot conductor, delivering precise load data without requiring direct contact with high voltage wires. Paired with a Monnit ALTA gateway operating at 900 MHz, it wires your facility into a scalable network of sensors that provides real-time visibility into energy usage, peak demand, and equipment load patterns. This combination of rugged hardware and cloud-based analytics makes it an essential tool for industrial operators who demand accurate, timely insights to optimize performance and reduce operating costs.

The ALTA current meter is built for industrial environments where reliability matters. It records the minimum, maximum, and average RMS current over selected periods, enabling you to detect anomalies, plan maintenance, and fine-tune energy efficiency initiatives. Whether you manage a data center, manufacturing floor, warehouse, or commercial building, this wireless current meter helps you optimize power distribution, prevent overloads, and confirm that machinery stays within safe operating envelopes. By delivering data that can trigger alerts and automate responses, the ALTA meter supports proactive maintenance, capacity planning, and continuous improvement across your facility.

• Wireless, long-range monitoring: The ALTA system communicates data via 900 MHz RF, enabling reliable, non-invasive monitoring across rooms, floors, or buildings without the need for complex wiring. This wireless capability supports scalable deployments where dozens of circuits can be tracked from a single Monnit gateway, reducing installation time and wiring costs while increasing the granularity of your energy data.
• Non-invasive RMS current measurement: The meter uses a current transformer (CT) that wraps around the hot conductor of a two-wire power system. By measuring the RMS current, it delivers true-load information without requiring you to break the circuit or perform high-risk voltage connections, improving safety and simplifying upgrades to existing infrastructure.
• Detailed current analytics at a glance: The device reports not only the current value but also the minimum RMS current, maximum RMS current, and the average RMS current over your chosen monitoring window. This trio of metrics helps you identify unusual loading, assess efficiency, and track how loads evolve during shifts, seasons, or production cycles.
• Industrial durability in harsh environments: Built to withstand demanding industrial settings, the ALTA meter combines solid engineering with dependable wireless communication. Its robust design minimizes maintenance needs while maximizing uptime, so you can rely on accurate data when it matters most for safety, compliance, and continuous improvement initiatives.
• Seamless integration with Monnit ecosystem: As part of the Monnit ALTA family, this current meter integrates with the broader ALTA platform and gateway architecture. Collect, visualize, and analyze current data alongside other sensors—temperature, humidity, vibration, door status, and more—to create a comprehensive view of facility health and energy performance.

Technical Details of Monnit ALTA Industrial Wireless AC Current Meter - 20 Amp (900 MHz)

• Measurement principle: RMS current measurement using a current transformer (CT) that wraps around the hot conductor in a two-wire power system (hot and common; ground optional). The sensor converts the magnetic field produced by the current into an electrical signal for accurate, non-contact monitoring.
• Current range: Designed for up to 20 A RMS per monitored circuit, enabling precise tracking of typical industrial loads and equipment startup transients without overloading the device’s sensing range.
• Wireless communication: Operates on the 900 MHz band to communicate with Monnit gateways and the ALTA network, delivering data with low latency and strong penetration through typical facility environments like metal cabinets and dense infrastructure.
• Data reported: Provides the essential RMS current measurement along with the minimum RMS current, maximum RMS current, and average RMS current across the selected monitoring window. This multi-point reporting supports trend analysis, load profiling, and anomaly detection over time.
• Connectivity and integration: Designed to work in conjunction with Monnit ALTA gateways and the Monnit Online Sensor Platform, enabling quick setup, dashboard visualization, alert configuration, and historical reporting for energy management, equipment protection, and operational analytics.

how to install Monnit ALTA Industrial Wireless AC Current Meter

• Prepare the circuit: Identify the hot conductor in the target circuit you want to monitor. Ensure the circuit is de-energized or follow your facility’s safety procedures before handling wiring components.
• Place the current transformer around the hot lead: Open the CT clamp and position it so that it encircles the hot wire without touching other conductors. Secure the CT as recommended in the user guide to maintain a clean, stable measurement.
• Connect the CT to the ALTA sensor: Attach the current transformer to the Monnit ALTA current meter module according to the provided installation instructions. Ensure the CT wiring is secure and protected from physical damage or interference.
• Pair with a gateway: Use the Monnit ALTA gateway to establish a wireless link with the current meter. Follow the gateway’s pairing procedure to add the new sensor to your network, ensuring a strong, reliable signal path for data transmission.
• Configure on the Monnit platform: Access the Monnit sensor dashboard to configure measurement parameters, set alert thresholds for RMS current, and define data-logging intervals. Validate that current readings populate in the dashboard, and test alerting to confirm proper operation.

Frequently asked questions

• What does the Monnit ALTA Wireless AC Current Meter measure? It measures the RMS current in an AC circuit using a current transformer that clamps around the hot conductor. The device reports minimum, maximum, and average RMS current values over your chosen monitoring window, giving you a clear view of load behavior and potential anomalies.
• Why is a 900 MHz wireless connection important? The 900 MHz wireless link enables long-range, reliable communication with Monnit gateways across facilities. This reduces the need for extensive wiring, allows easy scalability, and supports real-time data collection from multiple meters dispersed throughout a building or plant.
• How is installation performed without modifying the circuit? The current transformer clamps around the hot conductor and does not require electrical disconnection or direct contact with high-voltage parts. This non-invasive approach improves safety and speeds up deployment while preserving the integrity of the power path.
• What kind of data can I expect to see? You’ll see RMS current readings along with minimum, maximum, and average RMS values for the selected time interval. This enables load profiling, peak demand analysis, and identification of unusual loading patterns that may indicate equipment issues or opportunities for efficiency improvements.
• Can I monitor more than one circuit with Monnit ALTA? Yes. The ALTA system is designed for scalable deployments. You can deploy multiple current meters (one per circuit) and manage them through a single Monnit gateway and platform to gain a comprehensive view of electrical usage across your facility.