KSS520 Infrared SF6 Gas Sensor Module
1.Overview
SF6 gas is widely used as an insulating medium and arc
extinguishing gas in power equipment, especially in high-voltage
circuit breakers, transformers, transformers, capacitors,
arresters, fuses, etc. If leakage occurs, the pressure of the
equipment is reduced and the insulation capacity is reduced;
Pollute and destroy the atmospheric environment, increase the
greenhouse effect; Accumulation in low-level spaces, resulting in
accidents such as lack of oxygen in the brains of staff and even
rapid asphyxiation; Under the influence of partial discharge, high
temperature and other factors, SF6 gas will produce highly toxic
decomposition substances such as SF4, SF2, SOF2, etc.
KSS520 is a gas sensor module using NDIR infrared absorption
detection principle, which determines the concentration according
to the infrared radiation absorption of 10.5um by SF6 gas. KSS520
adopts MEMS light source, special structure optical cavity and
dual-channel detector to realize space dual optical path reference
compensation, and microprocessor for signal acquisition, processing
and output. KSS520 is small in size, low in power consumption, and
has UART, 4 to 20mA interfaces, and can also customize analog
voltage output; Provides digital calibration zero and sensitivity
functions, and manually implements calibration zero function.
KSS520 can be widely used in SF6 gas leak detection and other
occasions SF6 gas concentration analysis in the power industry.
| 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 | 11 | 12 | 30 | V |
| Maximum Operating Current | Iavg | 100 | 120 | 150 | mA |
| Detection Range (customizable). | Ra | | 1500 | | ppm |
| Measurement Accuracy | Acurracy | | ± 10ppm or ±5% truth value | | %vol |
| T90 Pipeline Type | Pump Suction | | | 5 | | second |
| Diffusion | | 30 | | second |
| Repeatability | zero | | | Less than ±50 | | ppm |
| Range | | | Less than ±5%. | | |
| Life Span | | | 10 | | year |
KSS520 diffusion (pumping compatible) block diagram
Pump suction type: length * width * height: 61mm * 40mm * 32mm
Diffusion type: length * width * height: 61mm * 40mm * 18mm
| Order information sheet |
| KSS520 | KSS520 infrared SF6 gas sensor module |
| 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 |
| KSS520 | -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 |
