Evaluation Kit Software Manual
R36US0002EU0100 Rev 1.00
Page 1
Aug 26, 2021
© 2021 Renesas Electronics
Overview
The RTD120D Thermopile CO
2
Detector EVK
(RTD120D-EVK) monitors CO
2
levels using the
Renesas RTD120D dual-thermopile detector. The
is intended to:
1. Help evaluate the RTD120D detector in a
microcontroller-based system
2. Show how to monitor the performance of an NDIR
CO
2
sensor solution based on Renesas
thermopiles
3. Demonstrate the process of calibrating such a
detection system
Right out of the box, the EVK can begin measuring
CO
2
levels. Simply attach the LCD module to the
main EVK board (if it is not already attached), and
then connect the provided USB cable to the board
and to a power source, such as a phone charger or a
PC USB port. The LCD will display the software title
and version number briefly, then after a 30-second
warm-up it will display CO
2
concentration readings in
ppm (parts per million). It will also display readings of
other sensors on the board; that is, barometric
pressure, relative humidity, and ambient temperature.
In addition to the stand-alone operation described
above, the EVK can provide advanced functionality
when connected to a host computer.
This document explains how to use the EVK with
application software running on a host PC in order to
provide additional capability, including:
1. Remote monitoring of CO
2
concentration,
barometric pressure, relative humidity, and
ambient temperature
2. Graphical display of data
3. Calibration of the CO
2
detection process with
enhanced visual feedback
Features
▪ CO
2
Detector Evaluation Software running on
Windows
®
, or end-user supplied software
communicating via text commands or ModBus
®
over USB, using any OS
▪ Extend functionality to simplify evaluation of
RTD120D Thermopile Detector
▪ Communicate with Thermopile CO
2
Detector EVK
using ModBus or simple serial commands for
terminal CLI or end-user supplied software
▪ Capture, graph, process, and export CO
2
concentration and other performance data
▪ Software supports calibration of CO
2
detection
algorithm with an interactive GUI environment
RTD120D-EVK
Thermopile CO
2
EVK
