Overview
A Class 1 precision energy measurement device with metrology-grade analogue front-end and LoRaWAN wireless communication for sub-metering in commercial and industrial facilities.
- Class 1 precision metrology AFE with anti-aliasing and harmonic analysis.
- Precision current transformers with flat frequency response shunt networks.
- High-impedance matched resistor voltage dividers to prevent temperature drift.
- Wireless LoRaWAN connectivity for retrofitting in existing building infrastructure.
- DLMS/COSEM compliant firmware with integrated tamper detection and logging.
Looking for custom engineering? Explore our electronics engineering services or contact us to request a PCB design and prototyping quote.
Challenge
Designing a utility-grade single-phase energy meter measuring current from 10 mA to 80 A to Class 1 accuracy under harsh EMI.
Solution
Used a dedicated metrology AFE, manganese copper shunt, and LoRaWAN long-range communications module.
Outcome
Passed national regulatory certification showing accuracy drift of less than 0.2% over wide temperature ranges.