KCS503 Infrared CO2 Module
KCS503 is a gas detection module based on the principle of NDIR
infrared absorption, suitable for detecting the concentration of
carbon dioxide in a gaseous environment at room temperature.
KCS503 adopts a patented optical cavity, imported light source and
dual-channel detector to realize the reference compensation of dual
optical paths in space. KCS503 has good selectivity, no oxygen
dependence and long life.
KCS503 has UART, 485 output and 4-20mA current output (or analog
voltage output) to facilitate customer selection of applications;
The KCS503 provides zero point calibration, sensitivity calibration
and clean air calibration commands, and provides a manually
calibrated MCDL pin for customers to perform relative zero
calibration of sensor modules using outdoor free-flowing clean air.
KCS503 adopts convection diffusion ventilation method, and the
diffusion speed is fast. KCS503 is designed for CO2 concentration
measurement in high humidity environments such as mushroom rooms,
incubation rooms, and agricultural greenhouses. It can also be
widely used in HVAC fresh air control, indoor air quality
monitoring, agricultural and animal husbandry production process
monitoring, can be installed in intelligent buildings, ventilation
systems, robots, automobiles and other applications, can also be
applied to other narrow space air quality monitoring.
KCS503 exterior view
| parameter | symbol | minimum | Typical values | maximum | unit |
| Storage Temperature | Tstg | -20 | - | 80 | °C |
| Operating Temperature | TA | -20 | | 60 | °C |
| Operating Humidity | HA | 0 | | 90 | % RH |
| Work Pressure | PA | 0.8 | | 1.2 | atm |
| Supply Voltage | Vs | 5 | 5 | 5.5 | V |
| Maximum Operating Current | Imax | 100 | 120 | 150 | mA |
Range (Customizable supported.) Can be up to 100% vol) | Ra | 2000 | 10000 | 50000 | ppm |
| Measurement Accuracy | Accuracy | - | ± 20ppm or ±5% true value | ± 300ppm± 5% true value | ppm |
| Reaction Time | T90 | - | 30 | 40 | second |
| Repeatability | Zero | | | <±50 | | ppm |
| 50% FS | - | | <±5% of the measured value @50% F.S. | - | |
| Life Span | | 3 | 10 | 15 | year |
Unit: mm
In order to facilitate users to better use this product, V2.2
version on the basis of V2.1 version, update the working conditions
and performance characteristics in the technical parameters,
because the installation instructions have no content, so the
installation instructions are removed, and the calibration-related
commands are deleted.
The sensor should be calibrated regularly, it is recommended that
it be no more than 3 months, and calibration is not required if automatic calibration is
turned on for long-term operation
Do not use the sensor for a long time in an environment with a high
density of dust.
Please use the sensor within the range of the sensor's power
supply.
In order to be able to purchase the specific specifications
required, please provide the following information
1) Sensor name 2) Sensor range 3 ) Sensor measurement accuracy
For example, KCS5003 5000ppm
| Order information sheet |
| KCS503 | KCS503 CO2 concentration sensor |
| xxxx | The sensor measures the range of CO2 concentration in ppm, with a
minimum value of 2000 and a maximum value of 50000 ppm. |
| 2000 | Range 200ppm (default). |
| 10000 | Range 10000ppm |
| 50000 | Range 50000ppm |
| encode | The reaction speed is divided into two types: fast and slow |
| S | Slow (default). |
| Q | fast |
| encode | Baud rate selection, support commonly used baud rate 2400 9600
19200 38400bps, 8 bits of data, 1 bit of stop bit, no check bit:
Confirm special needs before ordering. |
| Custom | Confirm the baud rate before ordering |
| 2400 | 2400bps baud rate |
| 9600 | 9600bps baud rate |
| 19200 | 19200bps baud rate |
| 38400 | 38400bps baud rate (default) |
| encode | Serial port protocol |
| Modbus-RTU | Standard Modbus-RTU protocol (default). |
| Modbus-ASCII | Standard Modbus-ASCII protocol |
| Modbus-Self | Modbus private protocol |
| KCS503 | -2000 | -S | -38400 | -Modbus-RTU | |
URL: www.kacise.com
Tel: +86-29-17719566736
Email: sales@kacise.com
Address: Tangyan South Road, Xi'an City, Shaanxi Province, China
Appendix
| Shorthand | Full name |
| VOL | 1% VOL refers to 1% of the volume of a particular gas in air. |
| PPM | 1PPM means that the volume of a specific gas in the air accounts
for one millionth. |
| O2 | Oxygen molecules |
| LCD | LCD display |
| RS485 | Asynchronous serial port 485 |
| DC | direct current |
| AC | Communication |
| PVC | polyvinyl chloride |
