RENESAS RTD120D-EVK Thermopile CO2 Detector Evaluation Kit User Guide
- June 6, 2024
- RENESAS
Table of Contents
Quickstart Guide
RTD120D-EVK
Thermopile CO2 Detector Evaluation Kit
The Thermopile CO2 Detector Evaluation Kit (EVK) provides an easy way to
evaluate the RTD120D dual-channel thermopile in a CO2 gas detector
application.
It operates stand-alone or with a PC running CO2 Detector Evaluation Software,
making the CO2 concentration and intermediate data available for plotting,
logging, processing, exporting, and analysis using software available. The
software and user manual for the kit can be downloaded from: www.renesas.com
/rtd120d-evk.
Kit Contents
- CO2 Detector EVK Board
- Detachable LCD Module
- USB to Micro-USB Cable
- Shorting jumpers (2)
- Quickstart Guide (this document)
Introduction
The Thermopile CO2 Detector Evaluation Kit is designed for evaluation of the
Renesas’ RTD120D dual thermopile in a CO2 gas sensing application, such as to
detect the ambient CO2 concentration. It has an NDIR (Non-Dispersive Infrared)
thermopile-based gas sensing circuit and the concentration of CO2 gas is
measured based on the intensity of the NDIR radiation.
It can be used as an application example to illustrate how the thermopile, in
combination with other Renesas components can be used to implement a CO2
detection and concentration measurement system.
Getting Started
Right out of the box, the EVK can begin measuring CO2 levels right away:
- Attach the LCD module to the main EVK board
- Remove the two shorting jumpers from the MODE and RESET headers on the mainboard. Save these for use when flashing new versions of firmware to the kit.
- Connect the provided USB cable to the board and to a power source, such as a phone charger or a PC USB port.
Two splash screens will be displayed in sequence, identifying the EVK, its software version, and serial number. Then after a 30 seconds warm-up period (“CO2 WARM”), the CO2 concentration will be displayed on the LCD, and updated every 5 seconds. The LCD will also display Barometric Pressure (BP), Relative Humidity (RH), and ambient temperature in degrees C (dC).
Two pushbuttons are used for viewing additional information and calibrating the board. Sw1 cycles through displaying available modes and Sw2 selects the currently displayed mode for further operations.
RTD120D-EVK Quickstart Guide
The EVK can be also be used with a Graphical User Interface that runs on a connected PC.
The EVK comes pre-calibrated, but it can be re-calibrated by the user if desired. CO2 calibration can be performed in either of two ways:
- In a stand-alone fashion, using the LCD and pushbutton user interface on the EVK itself, or
- With a graphical user interface (GUI), using a connected PC for a more interactive and visual experience.
See the RTD120D-EVK Thermopile CO2 Detector Evaluation Kit User Manual for further details.
Revision History
| Revision | Date | Description |
|---|---|---|
| 1.0 | Jul 28, 2021 | Initial release. |
R36UH0001EU0100 Rev.1.0
Jul 28, 2021