ATM90E Power Energy Monitor Boards Comparison
| Parametrics | ATM90E26 GTEM | ATM90E32 IPEM | ATM90E36 IPEM | |
|---|---|---|---|---|
| Active Energy Accy (%) | 0.1 | 0.1 | 0.1 | |
| ADC Channels | 3 | 6 | 7 | |
| ADC Resolution (bits) | 16 | 16 | 16 | |
| Board PSU Operating Voltage Range (AC RMS) | 5 to 20 V | 5 to 20 V | 5 to 20 V | |
| Crystal Frequency (ATM) | 8.192 MHz | 16.384 MHz | 16.384 MHz | |
| Current Monitoring Channels | 1 | 3 | 4 | |
| Current Range (RMS) | 0 to 65.535 A | 0 to 65.535 A | 0 to 65.535 A | |
| Data Dumping over DMA (SPI-Master) | - | - | Yes | |
| Direct Memory Access (DMA) | - | - | Yes | |
| Discrete Fourier Transform (DFT) Function | - | - | Yes | |
| Dynamic Range | 5000:1 | 6000:1 | 6000:1 | |
| Energy Metering Analog Front-End Channels | 3 | 6 | 7 | |
| Enhanced Poly-Phase High-Performance | - | Yes | Yes | |
| ESP32 ATM90 Default Interface | SPI | SPI | SPI | |
| ESP32 BT Frequency Range | 2402 MHz to 2480 MHz | 2402 MHz to 2480 MHz | 2402 MHz to 2480 MHz | |
| ESP32 External UART2 Interface | - | Yes | Yes | |
| ESP32 WLAN Frequency Range | 2412 MHz to 2462 MHz | 2412 MHz to 2462 MHz | 2412 MHz to 2462 MHz | |
| Frequency Detection Range | 45 to 65 Hz | 45 to 65 Hz | 45 to 65 Hz | |
| Increased Functionality | - | - | Yes | |
| LED/GPO Active | Yes | Yes | Yes | |
| LED/GPO Harmonic | - | Yes | Yes | |
| LED/GPO ReActive | Yes | Yes | Yes | |
| LED/GPO Fundamental | - | Yes | Yes | |
| Low Temperature Drift | - | Yes | Yes | |
| Mean Power Monitoring | - | Yes | Yes | |
| Meter Type | Single Phase | Three Phase (3P3W, Y or Δ) | Three Phase (3P3W, Y or Δ) | |
| Operating Ambient Temperature Range | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | |
| Operating Ambient Temperature Range 24C64 | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | |
| Operating Ambient Temperature Range ESP32 | –40°C to +125°C | –40°C to +125°C | –40°C to +125°C | |
| Operating Ambient Temperature Range SMPS | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | |
| Operating Ambient Temperature Range UART | –40°C to +85°C | –40°C to +85°C | –40°C to +85°C | |
| Operating Voltage - Board AC RMS | 8 to 12V | 8 to 12V | 8 to 12V | |
| Parameter Diagnosis Function | - | - | Yes | |
| Power Factor Range | -1.00 to +1.00 | -1.00 to +1.00 | -1.00 to +1.00 | |
| Reactive Energy Accy (%) | 0.2 | 0.2 | 0.2 | |
| Sag Detection | Yes | Yes | Yes | |
| Single Point Calibration | Yes | N/A | N/A | |
| Temp Coefficient Type (ppm/degC) | 15 | 6 | 6 | |
| Total Harmonic Distortion (THD) Function Current | - | - | Yes | |
| Total Harmonic Distortion (THD) Function Voltage | - | - | Yes | |
| UART Port | Yes | - | - | |
| Voltage Monitoring Channels | 1 Line | 3 Line | 3 Line + 1 (Neutral) | |
| Voltage Range (RMS) | 0 to 655.35 V | 0 to 655.35 V | 0 to 655.35 V | |
| Voltage Sensor Inputs ATM Maximum (AC RMS) | 20 V | 20 V | 20 V |