KCS503 Infrared CO2 Module

 

 

 

 

 

 

 

 

1. overview

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

 

 

 

2. Technical Parameters

 

 

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

 

 

 

3. Structural Dimension Drawing

Unit: mm

 

 

 

 

 

 

 

 

 

 

4. Release Notes

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.

5. Matters that should be paid attention to in maintenance

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.

6. Ordering Instructions

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

 

 

 

7. Ordering Information

 

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

 

 

 

Contact Details

 

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