KSS574 Infrared Hydrocarbon Sensor
Table 1 Version history
| version | date | description |
| V1.0 | 2016-10-12 | V1.0 released |
| V2.2 | 2018-03-06 | Adapt product attribute modifications |
Table of Contents
1.
Overview.............................................................................................................
4
2. Technical
Parameters............................................................................................
6
3. Structural Dimension
Drawing................................................................................
7
4. Installation
instructions...................................................................................................
8
5. Matters that should be paid attention to in
maintenance..................................................... 8
6. Ordering
Instructions......................................................................................................
9
7. Order
Information.........................................................................................................
10
8. Contact
Details.............................................................................................................
11
The KSS574 is a gas sensor based on the principle of NDIR infrared
absorption, suitable for testing methane gas concentrations in
industrial applications.
KSS574 adopts a patented optical cavity, imported light source and
dual-channel detector to realize the reference compensation of dual
optical paths in space. KSS574 has good selectivity, no oxygen
dependence and long life.
KSS574 has a UART output mode, provides zero point calibration,
sensitivity calibration and clean air calibration commands, and
provides customers with a manually calibrated MCDL pin, which is
convenient for customers to use outdoor free flow clean air to
perform relative zero calibration of the sensor module.
The KSS574 adopts diffusion ventilation method and has a response
time of less than 30 seconds. KSS574 is suitable for petrochemical
power and other applications.
The KSS574 is available in a variety of packages that can be
customized according to customer needs. There are three common
packages: package one, package two (six pins 4-20mA), package three
(seven pins 485 interfaces), of which package two and package three are the same
size.
| 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 | 9 | 12 | 18 | V |
| Maximum Operating Current | Iavg | 100 | 120 | 150 | mA |
| Detection Range (customizable). | Ra | 0 | 50000 | | ppm |
| Resolution | Resolution | | 1000 | | ppm |
| Measurement Accuracy | Acurracy | | ± 50ppm or ±5% truth value is the greater | | %vol |
| T90 pipeline type | diffusion | | | 30 | | second |
| Repeatability | Zero | | | Less than ±50 | | ppm |
| Range | | | Less than ±5% of the measured value | | |
| life span | | 3 | 5 | 10 | year |
Unit: mm
Package a structural dimension drawing
Package 2 (6-pin 4-20mA).
Package three (seven-pin 485 connectors).
4. Installation instructions
The sensor mounting thread dimensions refer to the block diagram.
5. Matters that should be paid attention to in maintenance
The sensor should be calibrated regularly, it is recommended that
it should not be more than 3 months;
Do not use the sensor for a long time in an environment with high
dust density;
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 and output mode, etc
For example, SW741, 0-50000ppm, ±5% of the reading or 50ppm whichever is the largest;
7. Order Information
| Order information sheet |
| KSS574 | KSS574 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 |
| KSS574 | -2000 | -S | -38400 | -Modbus-RTU | |
8. 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 |
