1、 Introduction to Toxic and Harmful Gas Detection Sensors

The BYG511 series toxic and harmful gas detection sensor adopts standard 4 series/7 series electrochemical gas sensors, infrared gas sensors, catalytic combustion gas sensors, output signal TTL, RS485, etc. It is designed for low-cost application users of integrators. As long as there are 4 series/7 series sensors, they can be calculated and calibrated through this module. The existing CO, O3, SO2, CH2O, O2, CxHx sensors have been widely used in various monitoring and monitoring solutions. The intrinsic safety design, hot swappable, simplified peripheral circuit, personalized data calibration, calibration program, sensor probe can be freely switched (of the same model, so that the sensor life can be freely replaced when the limit is reached), and it also supports oxygen cells, 2pin The electrode and similar packaging are perfectly compatible with standard inner diameter explosion-proof detection heads, suitable for rapid prototyping monitoring solutions and environmental gas monitoring systems.

2、 Application fields of toxic and harmful gas detection sensors

This product is widely used in scientific research institutions, portable/handheld detectors, fixed gas transmitters, atmospheric environment detectors, industrial toxic and harmful gas transmitters, etc.

3、 Technical parameters of toxic and harmful gas detection sensors

Technical Parameter	BYG511 series
Detect gas	4 or 7 series sensors for toxic and harmful gases, flammable and explosive gases, oxygen, TVOC, etc
Detection Principle	Electrochemical, catalytic combustion, infrared, thermal conductivity, PID photoionization, etc., depending on gas, range, on-site environment, and user requirements.
measuring range	According to the parameters (refer to the table below), the range can be customized
resolution	0.1/0.01/0.001ppm
accuracy	≤± 3% F.S (higher precision can be customized)
Sensor lifespan	Electrochemistry takes 2-3 years, oxygen takes 2 years, infrared principle takes 5-10 years, catalytic combustion takes 3 years, and thermal conductivity takes 5 years.
Warm-up time	<3 minutes
sampling interval	3S
response time（T90）	＜60S
Nonlinear	±2%
repeatability	±2%
Supply Voltage	DC5V
signal output	TTL、RS485
work environment	-20～50℃； 0-95% RH (no condensation)
Environment	-40～60℃； 0-100% RH (no condensation)
Weight/Size	φ37*25mm
notes

4、 Parameter selection table for toxic and harmful gas detection sensors

Detect gas	model	Detection range (standard)	accuracy	Resolution (standard)
oxygen	BYG000-O2	0-30%	±1%FS	0.1%
carbon monoxide	BYG000-CO	0-1000ppm	±3%FS	1ppm
hydrogen sulfide	BYG000-H2S	0-20ppm	±5%FS	0.01ppm
nitrogen dioxide	BYG000-NO2	0-200ppm	±5%FS	0.01ppm
nitric oxide	BYG000-NO	0-10ppm	±5%FS	0.01ppm
sulfur dioxide	BYG000-SO2	0-10ppm	±3%FS	0.01ppm
ammonia	BYG000-NH3	0-20ppm	±3%FS	0.1ppm
ozone	BYG000-O3	0-20ppm	±5%FS	0.01ppm
hydrogen cyanide	BYG000-HCN	0-200ppm	±5%FS	0.1ppm
formaldehyde	BYG000-HCHO	0-2ppm	±5%FS	0.01ppm
chlorine	BYG000-Cl2	0-200ppm	±5%FS	0.1ppm
Combustible gas	BYG000-EX	0-100%LEL	±5%FS	0.1%LEL
hydrogen	BYG000-H2	0-2000ppm	±3%FS	1ppm