Product Features #
- ESP32-WROOM32 Module
- Thermocouple Input
Main #
| Range of Product | NORVI EC M11 |
| Product Type | Programmable Node |
| Certifications | EN 61131-2:2007 EN 61010-1:2010+A1:2019 EN IEC 61010-2-201:2018 2014/30/EU- Electromagnetic Compatibility (EMC) Annex III, Part B, Module C |
| Rated supply voltage | 24V DC |
| Communication | WiFI / Bluetooth |
| Inputs and Outputs | 1 x Thermocouple Input |
| Displays and Visual Indicators | Green and Red LED |
Complementary #
| Product Unified Code | NORVI EC-M11-EG-C4 |
| Product Part Numbers | NORVI EC-M11-EG-C4 |
Mechanical Properties #
| Enclosure | WP8-10-4G |
| Mounting / Installation Method | Wall mount Electrical Pole mount – accessory required |
| Terminal Type | 8-position Molding Cable / AWG24 / Length 2 meters |
| Terminal Arrangement | Color-Coded Tinned Wires |
| Depth | 35 mm |
| Height | 100 mm |
| Width | 75 mm |
Environment #
| IP degree of protection | IP20 |
| Operating altitude | 0 – 2000 meters |
| Operating Temperature | – –10 … +85° C |
| Storage altitude | 0 – 3000 meters |
| Shock resistance | 15 gn for 11ms |
| Resistance to electrostatic discharge | 4kV on contact 8kV on air |
| Resistance to electromagnetic fields | 10 V/m (80 MHz …… 1GHz) 3 V/m (1.4 MHz …… 2 GHz) 1 V/m (2 MHz …… 3 GHz) |
Electrical Characteristics #
Grid Powered Devices #
| Rated Supply Voltage (V) | 24V DC |
| Current Consumption (mA) | 400mA |
| Recommended Power Source | 1W 24V DC |
Processing #
| SOC / MCU | ESP32-WROOM32 |
| Flash Memory | 4MB |
| ROM | 448 KB |
| SRAM | 520 KB |
| PSRAM | NOT AVAILABLE |
INPUTS and OUTPUTS #
Thermocouple Inputs #
| Thermocouple Type | MAX31855 |
| Resolution | 14-Bit, 0.25° C |
| Versions Available | K, J, N, T, or E type |
| Supply Voltage Range | -0.3V to +4.0V |
| Junction Temperature | 150° C |
| Continuous Power Dissipation | 470.6mW |
| SPI MISO | GPIO19 |
| SPI SCK | GPIO18 |
| CS | GPIO5 |
Thermocouple Wire Connections and Nominal Sensitivities #
| TYPE | T- WIRE | T+ WIRE | TEMP RANGE (°C) | SENSITIVITY | COLD-JUNCION SENSITIVITY |
| K | Alumel | Chromel | -200 to +1350 | 41.276(0° C to +1000° C) | 40.73 |
| J | Constantan | Iron | -40 to +750 | 57.953 (0° C to +750° C) | 52.136 |
| N | Nisil | Nicrosil | -200 to + 1300 | 36.256(0° C to +1000° C) | 27.171 |
| S | Platinum/Rhodium | Platinum | +50 to +1600 | 9.587(0° C to +1000° C) | 6.181 |
| T | Constantan | Copper | -250 to +400 | 52.18(0° C to +400° C) | 41.56 |
| E | Constantan | Chromel | -40 to +900 | 76.373(0° C to +1000° C) | 44.123 |
| R | Platinum/Rhodium | Platinum | -50 to +1770 | 10.506(0° C to +1000° C) | 6.158 |
8-pin Pin Connector and wire harness #
Pin Description #
| 8P Male | Wire colour | I/O Configuration |
| 1 | White | Thermocouple + |
| 2 | Brown | Thermocouple – |
| 3 | Green | – |
| 4 | Yellow | – |
| 5 | Gray | – |
| 6 | Pink | – |
| 7 | Blue | Power+ |
| 8 | Red | Power- |
GPIO Map #
| GPIO | Description | Usage |
| 0 | outputs PWM signal at boot | NRST |
| 1 | USB to UART | TX0 |
| 2 | ||
| 3 | USB to UART | RX0 |
| 4 | ||
| 5 | Thermocouple Input | CS |
| 12 | boot fails if pulled high | |
| 13 | ||
| 14 | outputs PWM signal at boot | |
| 15 | outputs PWM signal at boot | |
| 16 | ||
| 17 | ||
| 18 | Thermocouple Input | SPI SCLK |
| 19 | Thermocouple Input | SPI MISO |
| 23 | ||
| 32 | ||
| 33 | ||
| 35 | ||
| 36 |
